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* gNFS: RFE for NFS connection behaviorSantosh Kumar Pradhan2013-11-1415-120/+756
| | | | | | | | | | | | | | | Implement reconfigure() for NFS xlator so that volume set/reset wont restart the NFS server process. But few options can not be reconfigured dynamically e.g. nfs.mem-factor, nfs.port etc which needs NFS to be restarted. Change-Id: Ic586fd55b7933c0a3175708d8c41ed0475d74a1c BUG: 1027409 Signed-off-by: Santosh Kumar Pradhan <spradhan@redhat.com> Reviewed-on: http://review.gluster.org/6236 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Rajesh Joseph <rjoseph@redhat.com> Reviewed-by: Anand Avati <avati@redhat.com>
* Transparent data encryption and metadata authenticationEdward Shishkin2013-11-1314-12/+8385
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | .. in the systems with non-trusted server This new functionality can be useful in various cloud technologies. It is implemented via a special encryption/crypt translator,which works on the client side and performs encryption and authentication; 1. Class of supported algorithms The crypt translator can support any atomic symmetric block cipher algorithms (which require to pad plain/cipher text before performing encryption/decryption transform (see glossary in atom.c for definitions). In particular, it can support algorithms with the EOF issue (which require to pad the end of file by extra-data). Crypt translator performs translations user -> (offset, size) -> (aligned-offset, padded-size) ->server (and backward), and resolves individual FOPs (write(), truncate(), etc) to read-modify-write sequences. A volume can contain files encrypted by different algorithms of the mentioned class. To change some option value just reconfigure the volume. Currently only one algorithm is supported: AES_XTS. Example of algorithms, which can not be supported by the crypt translator: 1. Asymmetric block cipher algorithms, which inflate data, e.g. RSA; 2. Symmetric block cipher algorithms with inline MACs for data authentication. 2. Implementation notes. a) Atomic algorithms Since any process in a stackable file system manipulates with local data (which can be obsoleted by local data of another process), any atomic cipher algorithm without proper support can lead to non-POSIX behavior. To resolve the "collisions" we introduce locks: before performing FOP->read(), FOP->write(), etc. the process should first lock the file. b) Algorithms with EOF issue Such algorithms require to pad the end of file with some extra-data. Without proper support this will result in losing information about real file size. Keeping a track of real file size is a responsibility of the crypt translator. A special extended attribute with the name "trusted.glusterfs.crypt.att.size" is used for this purpose. All files contained in bricks of encrypted volume do have "padded" sizes. 3. Non-trusted servers and Metadata authentication We assume that server, where user's data is stored on is non-trusted. It means that the server can be subjected to various attacks directed to reveal user's encrypted personal data. We provide protection against such attacks. Every encrypted file has specific private attributes (cipher algorithm id, atom size, etc), which are packed to a string (so-called "format string") and stored as a special extended attribute with the name "trusted.glusterfs.crypt.att.cfmt". We protect the string from tampering. This protection is mandatory, hardcoded and is always on. Without such protection various attacks (based on extending the scope of per-file secret keys) are possible. Our authentication method has been developed in tight collaboration with Red Hat security team and is implemented as "metadata loader of version 1" (see file metadata.c). This method is NIST-compliant and is based on checking 8-byte per-hardlink MACs created(updated) by FOP->create(), FOP->link(), FOP->unlink(), FOP->rename() by the following unique entities: . file (hardlink) name; . verified file's object id (gfid). Every time, before manipulating with a file, we check it's MACs at FOP->open() time. Some FOPs don't require a file to be opened (e.g. FOP->truncate()). In such cases the crypt translator opens the file mandatory. 4. Generating keys Unique per-file keys are derived by NIST-compliant methods from the a) parent key; b) unique verified object-id of the file (gfid); Per-volume master key, provided by user at mount time is in the root of this "tree of keys". Those keys are used to: 1) encrypt/decrypt file data; 2) encrypt/decrypt file metadata; 3) create per-file and per-link MACs for metadata authentication. 5. Instructions Getting started with crypt translator Example: 1) Create a volume "myvol" and enable encryption: # gluster volume create myvol pepelac:/vols/xvol # gluster volume set myvol encryption on 2) Set location (absolute pathname) of your master key: # gluster volume set myvol encryption.master-key /home/me/mykey 3) Set other options to override default options, if needed. Start the volume. 4) On the client side make sure that the file /home/me/mykey exists and contains proper per-volume master key (that is 256-bit AES key). This key has to be in hex form, i.e. should be represented by 64 symbols from the set {'0', ..., '9', 'a', ..., 'f'}. The key should start at the beginning of the file. All symbols at offsets >= 64 are ignored. 5) Mount the volume "myvol" on the client side: # glusterfs --volfile-server=pepelac --volfile-id=myvol /mnt After successful mount the file which contains master key may be removed. NOTE: Keeping the master key between mount sessions is in user's competence. ********************************************************************** WARNING! Losing the master key will make content of all regular files inaccessible. Mount with improper master key allows to access content of directories: file names are not encrypted. ********************************************************************** 6. Options of crypt translator 1) "master-key": specifies location (absolute pathname) of the file which contains per-volume master key. There is no default location for master key. 2) "data-key-size": specifies size of per-file key for data encryption Possible values: . "256" default value . "512" 3) "block-size": specifies atom size. Possible values: . "512" . "1024" . "2048" . "4096" default value; 7. Test cases Any workload, which involves the following file operations: ->create(); ->open(); ->readv(); ->writev(); ->truncate(); ->ftruncate(); ->link(); ->unlink(); ->rename(); ->readdirp(). 8. TODOs: 1) Currently size of IOs issued by crypt translator is restricted by block_size (4K by default). We can use larger IOs to improve performance. Change-Id: I2601fe95c5c4dc5b22308a53d0cbdc071d5e5cee BUG: 1030058 Signed-off-by: Edward Shishkin <edward@redhat.com> Signed-off-by: Anand Avati <avati@redhat.com> Reviewed-on: http://review.gluster.org/4667 Tested-by: Gluster Build System <jenkins@build.gluster.com>
* cluster/dht - rebalance: handle the rebalance @ inode level (!fd level)Amar Tumballi2013-11-134-128/+148
| | | | | | | | | | | | | * migrate all the fd's on an inode to newer subvol after rebalance * use the migration in progress flag in inode, so all the operations on the inode can make use of it Change-Id: Ib807a46e927a1062688fc15119c916797c52a350 BUG: 1013456 Signed-off-by: Amar Tumballi <amarts@redhat.com> Reviewed-on: http://review.gluster.org/5891 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
* libglusterfs/inode: introduce new APIs for ctx handlingAmar Tumballi2013-11-131-1/+1
| | | | | | | | | | | | | | * inode_ctx_reset{0,1,2}() for reseting value1, value2, and both respectively * inode_ctx_get0() - to get the first value only * inode_ctx_set0() - to set the first value only * inode_ctx_get1() - to get the second value only * inode_ctx_set1() - to set the second value only Change-Id: I4dfbdac81d6a3f4e5784e060c76edabb1692ce03 Signed-off-by: Amar Tumballi <amarts@redhat.com> Reviewed-on: http://review.gluster.org/5890 Reviewed-by: Anand Avati <avati@redhat.com> Tested-by: Anand Avati <avati@redhat.com>
* bd: Add support to create clone, snapshot and merge of LV images.M. Mohan Kumar2013-11-137-56/+654
| | | | | | | | | | | | | | | | | | | | | | | | | | Special xattr names "clone" & "snapshot" can be used to create full and linked clone of the LV images. GFID of destination posix file (to be mapped) is passed as a value to the xattr. Destination posix file must exist before running this operation. These operations form a basis for offloading storage related operations from QEMU to GlusterFS. Syntax for full clone: xattr name: "clone" value: "gfid-of-dest-file" Syntax for linked clone: xattr name: "snapshot" value: "gfid-of-dest-file" Syntax for merging: xattr name: "merge" value: "path-to-snapshot-file" Example: setfattr -n clone -v <gfid-of-dest-file> /media/source setfattr -n snapshot -v <gfid-of-dest-file> /media/source setfattr -n merge -v "/media/sn" /media/sn Change-Id: Id9f984a709d4c2e52a64ae75bb12a8ecb01f8776 BUG: 1028672 Signed-off-by: M. Mohan Kumar <mohan@in.ibm.com> Reviewed-on: http://review.gluster.org/5626 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
* bd: Add aio support to BD xlatorM. Mohan Kumar2013-11-137-24/+651
| | | | | | | | | | | | Volume option bd-aio controls AIO feature for BD xlator. Code taken from posix-aio.c Change-Id: Ib049bd59c9d3f9101d33939838322cfa808de053 BUG: 1028672 Signed-off-by: M. Mohan Kumar <mohan@in.ibm.com> Reviewed-on: http://review.gluster.org/5748 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
* bd: Add BD support to other xlatorsM. Mohan Kumar2013-11-132-26/+63
| | | | | | | | | | | | | | | | Make changes to distributed xlator to work with BD xlator. Unlike files, a block device can't be removed when its opened. So some part of the code were moved down to avoid this situation. Also before truncating a BD file its BD_XATTR should be set otherwise truncate will result in truncating posix file. So file is created with needed BD_XATTR and truncate is invoked. Also enables BD xlator in stripe volume type. Change-Id: If127516e261fac5fc5b137e7fe33e100bc92acc0 BUG: 1028672 Signed-off-by: M. Mohan Kumar <mohan@in.ibm.com> Reviewed-on: http://review.gluster.org/5235 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
* bd: posix/multi-brick support to BD xlatorM. Mohan Kumar2013-11-1317-1/+3143
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Current BD xlator (block backend) has a few limitations such as * Creation of directories not supported * Supports only single brick * Does not use extended attributes (and client gfid) like posix xlator * Creation of special files (symbolic links, device nodes etc) not supported Basic limitation of not allowing directory creation is blocking oVirt/VDSM to consume BD xlator as part of Gluster domain since VDSM creates multi-level directories when GlusterFS is used as storage backend for storing VM images. To overcome these limitations a new BD xlator with following improvements is suggested. * New hybrid BD xlator that handles both regular files and block device files * The volume will have both POSIX and BD bricks. Regular files are created on POSIX bricks, block devices are created on the BD brick (VG) * BD xlator leverages exiting POSIX xlator for most POSIX calls and hence sits above the POSIX xlator * Block device file is differentiated from regular file by an extended attribute * The xattr 'user.glusterfs.bd' (BD_XATTR) plays a role in mapping a posix file to Logical Volume (LV). * When a client sends a request to set BD_XATTR on a posix file, a new LV is created and mapped to posix file. So every block device will have a representative file in POSIX brick with 'user.glusterfs.bd' (BD_XATTR) set. * Here after all operations on this file results in LV related operations. For example opening a file that has BD_XATTR set results in opening the LV block device, reading results in reading the corresponding LV block device. When BD xlator gets request to set BD_XATTR via setxattr call, it creates a LV and information about this LV is placed in the xattr of the posix file. xattr "user.glusterfs.bd" used to identify that posix file is mapped to BD. Usage: Server side: [root@host1 ~]# gluster volume create bdvol host1:/storage/vg1_info?vg1 host2:/storage/vg2_info?vg2 It creates a distributed gluster volume 'bdvol' with Volume Group vg1 using posix brick /storage/vg1_info in host1 and Volume Group vg2 using /storage/vg2_info in host2. [root@host1 ~]# gluster volume start bdvol Client side: [root@node ~]# mount -t glusterfs host1:/bdvol /media [root@node ~]# touch /media/posix It creates regular posix file 'posix' in either host1:/vg1 or host2:/vg2 brick [root@node ~]# mkdir /media/image [root@node ~]# touch /media/image/lv1 It also creates regular posix file 'lv1' in either host1:/vg1 or host2:/vg2 brick [root@node ~]# setfattr -n "user.glusterfs.bd" -v "lv" /media/image/lv1 [root@node ~]# Above setxattr results in creating a new LV in corresponding brick's VG and it sets 'user.glusterfs.bd' with value 'lv:<default-extent-size' [root@node ~]# truncate -s5G /media/image/lv1 It results in resizig LV 'lv1'to 5G New BD xlator code is placed in xlators/storage/bd directory. Also add volume-uuid to the VG so that same VG can't be used for other bricks/volumes. After deleting a gluster volume, one has to manually remove the associated tag using vgchange <vg-name> --deltag <trusted.glusterfs.volume-id:<volume-id>> Changes from previous version V5: * Removed support for delayed deleting of LVs Changes from previous version V4: * Consolidated the patches * Removed usage of BD_XATTR_SIZE and consolidated it in BD_XATTR. Changes from previous version V3: * Added support in FUSE to support full/linked clone * Added support to merge snapshots and provide information about origin * bd_map xlator removed * iatt structure used in inode_ctx. iatt is cached and updated during fsync/flush * aio support * Type and capabilities of volume are exported through getxattr Changes from version 2: * Used inode_context for caching BD size and to check if loc/fd is BD or not. * Added GlusterFS server offloaded copy and snapshot through setfattr FOP. As part of this libgfapi is modified. * BD xlator supports stripe * During unlinking if a LV file is already opened, its added to delete list and bd_del_thread tries to delete from this list when a last reference to that file is closed. Changes from previous version: * gfid is used as name of LV * ? is used to specify VG name for creating BD volume in volume create, add-brick. gluster volume create volname host:/path?vg * open-behind issue is fixed * A replicate brick can be added dynamically and LVs from source brick are replicated to destination brick * A distribute brick can be added dynamically and rebalance operation distributes existing LVs/files to the new brick * Thin provisioning support added. * bd_map xlator support retained * setfattr -n user.glusterfs.bd -v "lv" creates a regular LV and setfattr -n user.glusterfs.bd -v "thin" creates thin LV * Capability and backend information added to gluster volume info (and --xml) so that management tools can exploit BD xlator. * tracing support for bd xlator added TODO: * Add support to display snapshots for a given LV * Display posix filename for list-origin instead of gfid Change-Id: I00d32dfbab3b7c806e0841515c86c3aa519332f2 BUG: 1028672 Signed-off-by: M. Mohan Kumar <mohan@in.ibm.com> Reviewed-on: http://review.gluster.org/4809 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
* bd_map: Remove bd_map xlatorM. Mohan Kumar2013-11-1318-3682/+16
| | | | | | | | | | | Remove bd_map xlator and CLI related changes. Change-Id: If7086205df1907127c1a1fa4ba603f1c48421d09 BUG: 1028672 Signed-off-by: M. Mohan Kumar <mohan@in.ibm.com> Reviewed-on: http://review.gluster.org/5747 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
* server/rpc: bricks goes offline and comes back online, with lots of "No such ↵Vikhyat Umrao2013-11-121-3/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | file or directory" log messages Problem: Messages were getting logged very frequently at log level INFO. [2013-03-01 11:34:28.029222] I [server3_1-fops.c:1541:server_open_cbk] vol-server: 993888: OPEN (null) (--) ==> -1 (No such file or directory) [2013-03-01 11:34:28.031579] I [server3_1-fops.c:252:server_inodelk_cbk] vol-server: 993896: INODELK (null) (--) ==> -1 (No such file or directory) [2013-03-01 11:34:28.034041] I [server3_1-fops.c:252:server_inodelk_cbk] vol-server: 993914: INODELK (null) (--) ==> -1 (No such file or directory) [2013-03-01 11:34:28.040435] I [server3_1-fops.c:1338:server_flush_cbk] vol-server: 993938: FLUSH -2 (--) ==> -1 (No such file or directory) Solution: Moved them to DEBUG log level if error number equlas to ENOENT else to ERROR log level. It will help in decreasing the size of log files at INFO log level. For server_open_cbk and for some other functions we already have a patch, below is the URL for it. URL- http://review.gluster.org/6241 This patch solves logging problem for functions server_inodelk_cbk and server_flush_cbk. Change-Id: I57372e851371e466f1674726015e28378b826f5f BUG: 1029372 Signed-off-by: Vikhyat Umrao<vumrao@redhat.com> Reviewed-on: http://review.gluster.org/6252 Reviewed-by: Niels de Vos <ndevos@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com>
* features/compress: Compression/DeCompression translatorPrashanth Pai2013-11-119-1/+1108
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * When a writev call occurs, the client compresses the data before sending it to server. On the server, compressed data is decompressed. Similarly, when a readv call occurs, the server compresses the data before sending it to client. On the client, the compressed data is decompressed. Thus the amount of data sent over the wire is minimized. * Compression/Decompression is done using Zlib library. * During normal operation, this is the format of data sent over wire : <compressed-data> + trailer(8) The trailer contains the CRC32 checksum and length of original uncompressed data. This is used for validation. HOW TO USE ---------- Turning on compression xlator: gluster volume set <vol_name> compress on Configurable options: gluster volume set <vol_name> compress.compression-level 8 gluster volume set <vol_name> compress.min-size 50 Change-Id: Ib7a66b6f1f70fe002b7c513588cdf75c69370805 BUG: 923540 Original-author : Venky Shankar <vshankar@redhat.com> Signed-off-by: Venky Shankar <vshankar@redhat.com> Signed-off-by: Prashanth Pai <nullpai@gmail.com> Signed-off-by: Prashanth Pai <ppai@redhat.com> Reviewed-on: http://review.gluster.org/3251 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* server/rpc: Numerous entries of error - "No such file or directory" in ↵Vikhyat Umrao2013-11-111-3/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | bricks log Problem: Messages were getting logged very frequently at log level INFO. One of the log file snippet - [2013-10-27 00:05:01.501355] I [server3_1-fops.c:1707:server_stat_cbk] 0-vol-server: 24846575: STAT (null) (--) ==> -1 (No such file or directory) [2013-10-27 00:05:01.505101] I [server3_1-fops.c:1707:server_stat_cbk] 0-vol-server: 24846577: STAT (null) (--) ==> -1 (No such file or directory) [2013-10-27 00:05:01.507299] I [server3_1-fops.c:1707:server_stat_cbk] 0-vol-server: 24846578: STAT (null) (--) ==> -1 (No such file or directory) [2013-10-20 19:50:35.554563] I [server3_1-fops.c:1538:server_open_cbk] 0-vol-server: 18714687: OPEN <gfid:01c70ca0-1952-4e82-abee-a07205757d8e> (01c70ca0-1952-4e82-abee-a07205757d8e) ==> -1 (No such file or directory) [2013-10-20 19:50:35.555520] I [server3_1-fops.c:1538:server_open_cbk] 0-vol-server: 18714697: OPEN <gfid:01c70ca0-1952-4e82-abee-a07205757d8e> (01c70ca0-1952-4e82-abee-a07205757d8e) ==> -1 (No such file or directory) [2013-10-20 19:50:35.558292] I [server3_1-fops.c:1538:server_open_cbk] 0-vol-server: 18714712: OPEN (null) (--) ==> -1 (No such file or directory) Solution: Moved them to DEBUG log level if error number equlas to ENOENT else to ERROR log level. It will help in decreasing the size of log files at INFO log level. Change-Id: I23d74320c9c21bbce4805c20295556cc2cc0a8d8 BUG: 808073 Signed-off-by: Vikhyat Umrao <vumrao@redhat.com> Reviewed-on: http://review.gluster.org/6241 Reviewed-by: Niels de Vos <ndevos@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* features/qemu-block: simplify coroutine model to use single synctask, ucontextBrian Foster2013-11-107-248/+72
| | | | | | | | | | | | | | | | | | | | | | | | The current coroutine model, mapping synctasks 1-1 with qemu internal Coroutines, has some unresolved raciness issues. This problem usually manifests as lifecycle mismatches between top-level (gluster created) synctasks and the subsequently created internal coroutines from that context. Qemu's internal queueing (and locking) can cause situations where the top-level synctask is destroyed before the internal scheduler has released references to memory, leading to use after free crashes and asserts. Simplify the coroutine model to use a single synctask as a coroutine processor and rely on the existing native ucontext coroutine implementation. The syncenv thread is donated to qemu and ensures a single top-level coroutine is processed at a time. Qemu now has complete control over coroutine scheduling. BUG: 986775 Change-Id: I38223479a608d80353128e390f243933fc946fd6 Signed-off-by: Brian Foster <bfoster@redhat.com> Reviewed-on: http://review.gluster.org/6110 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
* features/qemu-block: add qemu backing image support (clone)Brian Foster2013-11-104-23/+166
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add basic backing image support to the block-format mechanism. This is a functionality checkpoint that enables the raw mechanism required to support client driven "snapshot" and "clone" requests. This change enhances the block-format setxattr command to support an additional and optional backing image reference. For example: setxattr -n trusted.glusterfs.block-format -v "qcow2:10GB:<bimg>" ./newimage ... where <bimg> refers to the backing image for unallocated blocks in newimage. <bimg> can be provided in one of two formats: - a gfid string in the following format (assuming a valid gfid): <gfid:00000000-0000-0000-0000-000000000000> - or a filename that must be resident in the same directory as the new clone file being formatted. E.g., setxattr -n trusted.glusterfs.block-format -v "qcow2:10GB:baseimg" ./newimage This latter format is more restrictive, simply provided for convenience or until something more refined is available. This change makes no assumptions about the backing image file and affords no additional protection. It is up to the user/client to recognize the relationship between the files and manage them appropriately (i.e., no writes to the backing image, etc.). BUG: 986775 Change-Id: I7aff7bdc59b85a6459001a6bfeae4db6bf74f703 Signed-off-by: Brian Foster <bfoster@redhat.com> Reviewed-on: http://review.gluster.org/5967 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
* glusterfs: zerofill supportM. Mohan Kumar2013-11-1020-16/+1318
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add support for a new ZEROFILL fop. Zerofill writes zeroes to a file in the specified range. This fop will be useful when a whole file needs to be initialized with zero (could be useful for zero filled VM disk image provisioning or during scrubbing of VM disk images). Client/application can issue this FOP for zeroing out. Gluster server will zero out required range of bytes ie server offloaded zeroing. In the absence of this fop, client/application has to repetitively issue write (zero) fop to the server, which is very inefficient method because of the overheads involved in RPC calls and acknowledgements. WRITESAME is a SCSI T10 command that takes a block of data as input and writes the same data to other blocks and this write is handled completely within the storage and hence is known as offload . Linux ,now has support for SCSI WRITESAME command which is exposed to the user in the form of BLKZEROOUT ioctl. BD Xlator can exploit BLKZEROOUT ioctl to implement this fop. Thus zeroing out operations can be completely offloaded to the storage device , making it highly efficient. The fop takes two arguments offset and size. It zeroes out 'size' number of bytes in an opened file starting from 'offset' position. This patch adds zerofill support to the following areas: - libglusterfs - io-stats - performance/md-cache,open-behind - quota - cluster/afr,dht,stripe - rpc/xdr - protocol/client,server - io-threads - marker - storage/posix - libgfapi Client applications can exloit this fop by using glfs_zerofill introduced in libgfapi.FUSE support to this fop has not been added as there is no system call for this fop. Changes from previous version 3: * Removed redundant memory failure log messages Changes from previous version 2: * Rebased and fixed build error Changes from previous version 1: * Rebased for latest master TODO : * Add zerofill support to trace xlator * Expose zerofill capability as part of gluster volume info Here is a performance comparison of server offloaded zeofill vs zeroing out using repeated writes. [root@llmvm02 remote]# time ./offloaded aakash-test log 20 real 3m34.155s user 0m0.018s sys 0m0.040s [root@llmvm02 remote]# time ./manually aakash-test log 20 real 4m23.043s user 0m2.197s sys 0m14.457s [root@llmvm02 remote]# time ./offloaded aakash-test log 25; real 4m28.363s user 0m0.021s sys 0m0.025s [root@llmvm02 remote]# time ./manually aakash-test log 25 real 5m34.278s user 0m2.957s sys 0m18.808s The argument log is a file which we want to set for logging purpose and the third argument is size in GB . As we can see there is a performance improvement of around 20% with this fop. Change-Id: I081159f5f7edde0ddb78169fb4c21c776ec91a18 BUG: 1028673 Signed-off-by: Aakash Lal Das <aakash@linux.vnet.ibm.com> Signed-off-by: M. Mohan Kumar <mohan@in.ibm.com> Reviewed-on: http://review.gluster.org/5327 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* glusterd: modify remove-brick CLI message.Ravishankar N ravishankar@redhat.com2013-11-071-5/+4
| | | | | | | | | | | | | | | | | | | | | In the current context "replica_cnt" is used just to know whether the specific key exists or not by calling "dict_get_int32", which we can replace by "dict_get ()". And changing the log message as it is more appropriate to say "migration of data" rather than "rebalance". This patch refactors commit 51c6fa7a354826744de98 against BZ 961669 reviewed on : http://review.gluster.org/5566 Change-Id: I48eae206a28d4083975e64407ed8fe4539f9c24b BUG: 1027270 Signed-off-by: Ravishankar N <ravishankar@redhat.com> Original patch: Susant Palai <spalai@redhat.com> Reviewed-on: http://review.gluster.org/6001 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Krishnan Parthasarathi <kparthas@redhat.com> Reviewed-by: susant palai <spalai@redhat.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* posix: Fix excessive logging resulting from get_real_filename failure from sambaKrutika Dhananjay2013-11-071-2/+3
| | | | | | | | | | Change-Id: I641d028165da7b8501bd372c62d2df89a9d4db1f BUG: 1027174 Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com> Reviewed-on: http://review.gluster.org/6237 Reviewed-by: poornima g <pgurusid@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* gNFS: NFS segfaults with nfstest_posix toolSantosh Kumar Pradhan2013-11-042-31/+48
| | | | | | | | | | | | | | | | | | | | | | Problem: nfs3_stat_to_fattr3() missed a NULL check. FIX: (1) Added a NULL check. (2) In all fop cbk path, if the op_ret is -1 and op_errno is 0, then handle it as a special case. Set the NFS3 status as NFS3ERR_SERVERFAULT instead of NFS3_OK. (3) The other component of FIX would be in DHT module and is on the way. Change-Id: I6f03c9a02d794f8b807574f2755094dab1b90c92 BUG: 1010241 Signed-off-by: Santosh Kumar Pradhan <spradhan@redhat.com> Reviewed-on: http://review.gluster.org/6026 Reviewed-by: Rajesh Joseph <rjoseph@redhat.com> Reviewed-by: Niels de Vos <ndevos@redhat.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com>
* client_t: phase 2, refactor server_ctx and locks_ctx outKaleb S. KEITHLEY2013-10-3115-838/+1047
| | | | | | | | | | | | | | remove server_ctx and locks_ctx from client_ctx directly and store as into discrete entities in the scratch_ctx hooking up dump will be in phase 3 BUG: 849630 Change-Id: I94cea328326db236cdfdf306cb381e4d58f58d4c Signed-off-by: Kaleb S. KEITHLEY <kkeithle@redhat.com> Reviewed-on: http://review.gluster.org/5678 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
* mgmt/glusterd: add option to specify a different base-portKaleb S. KEITHLEY2013-10-314-117/+127
| | | | | | | | | | | | | | | | | | This is (arguably) a hack to work around a bug in libvirt which is not well behaved wrt to using TCP ports in the unreserved space between 49152-65535. (See RFC 6335) Normally glusterd starts and binds to the first available port in range, usually 49152. libvirt's live migration also tries to use ports in this range, but has no fallback to use (an)other port(s) when the one it wants is already in use. Change-Id: Id8fe35c08b6ce4f268d46804bbb6dddab7a6b7bb BUG: 1018178 Signed-off-by: Kaleb S. KEITHLEY <kkeithle@redhat.com> Reviewed-on: http://review.gluster.org/6210 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
* features/gfid-access: Handle inode remap when parent inode is NULLPranith Kumar K2013-10-311-7/+2
| | | | | | | | | | Change-Id: Ic3f9d30d75df0bbbdf8fe28446fabe62d90fa854 BUG: 1024666 Signed-off-by: Pranith Kumar K <pkarampu@redhat.com> Reviewed-on: http://review.gluster.org/6194 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Amar Tumballi <amarts@redhat.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* glusterd: Release big-lock after log-rotate handler returnsKrutika Dhananjay2013-10-301-1/+8
| | | | | | | | | | | | ... so that subsequent volume commands don't block waiting forever, for the lock to be released. Change-Id: I24b5ec47f6982900ab74ff1b492d523f31ecfb7f BUG: 1022055 Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com> Reviewed-on: http://review.gluster.org/6122 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
* glusterd : Improved quota volume reset commandAnuradha2013-10-282-10/+23
| | | | | | | | | | | | | | | | | | | | | | | Quota volume reset command without "force" option fixed, doesn't fail anymore. It resets unprotected fields and not the protected ones. Also, an appropriate message is provided to the user for the following cases : 1. only unprotected fields are reset, "force" option should be used to reset protected fields. 2. Both protected and unprotected fields are reset. 3. No field was reset, "force" option required. Test case for the same also added. Change-Id: I24e8f1be87b79ccd81bf6f933e00608b861c7a16 BUG: 1022905 Signed-off-by: Anuradha <atalur@redhat.com> Reviewed-on: http://review.gluster.org/6135 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Krishnan Parthasarathi <kparthas@redhat.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* rpcsvc: implement per-client RPC throttlingAnand Avati2013-10-282-0/+21
| | | | | | | | | | | | | | | | Implement a limit on the total number of outstanding RPC requests from a given cient. Once the limit is reached the client socket is removed from POLL-IN event polling. Change-Id: I8071b8c89b78d02e830e6af5a540308199d6bdcd BUG: 1008301 Signed-off-by: Anand Avati <avati@redhat.com> Reviewed-on: http://review.gluster.org/6114 Reviewed-by: Santosh Pradhan <spradhan@redhat.com> Reviewed-by: Rajesh Joseph <rjoseph@redhat.com> Reviewed-by: Harshavardhana <harsha@harshavardhana.net> Reviewed-by: Vijay Bellur <vbellur@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com>
* gNFS: Make NFS I/O size to 1MB by defaultSantosh Kumar Pradhan2013-10-273-19/+60
| | | | | | | | | | | | | | | | | For better NFS performance, make the default I/O size to 1MB, same as kernel NFS. Also refactor the description for read-size, write-size and readdir-size (i.e. it must be a multiple of 1KB but min value is 4KB and max supported value is 1MB). On slower network, rsize/wsize can be adjusted to 16/32/64-KB through nfs.read-size or nfs.write-size respectively. Change-Id: I142cff1c3644bb9f93188e4e890478177c9465e3 BUG: 1009223 Signed-off-by: Santosh Kumar Pradhan <spradhan@redhat.com> Reviewed-on: http://review.gluster.org/6103 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Shyamsundar Ranganathan <srangana@redhat.com> Reviewed-by: Anand Avati <avati@redhat.com>
* dual license: update remaining files with correct license textKaleb S. KEITHLEY2013-10-2425-325/+100
| | | | | | | | | | | | | | | Sayan Saha has previously approved changing everthing to dual license but somehow we have missed changing these files. I am explicitly not updating the copyright dates as nothing else that's copyrightable has changed in these files with the license change Change-Id: Ia965eeb7168447d69e28e939ad95ee388873b6e4 BUG: 951549 Signed-off-by: Kaleb S. KEITHLEY <kkeithle@redhat.com> Reviewed-on: http://review.gluster.org/6128 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* mgmt/glusterd: Relax extended attribute checks for volume create and add ↵Vijay Bellur2013-10-172-5/+10
| | | | | | | | | | | | | | brick force. Expectation with force is that user is aware of the consequences of sanity checks not being triggered. Change-Id: I79dfeed16a23829a7217cef33ab83f9f0ffae336 Signed-off-by: Vijay Bellur <vbellur@redhat.com> BUG: 1007509 Reviewed-on: http://review.gluster.org/5746 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
* cli,glusterd: Changes to cli-glusterd communicationKaushal M2013-10-174-10/+200
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Glusterd changes: With this patch, glusterd creates a socket file in DATADIR/run/glusterd.socket , and listen on it for cli requests. It listens for 2 rpc programs on the socket file, - The glusterd cli rpc program, for all cli commands - A reduced glusterd handshake program, just for the 'system:: getspec' command The location of the socket file can be changed with the glusterd option 'glusterd-sockfile'. To retain compatibility with the '--remote-host' cli option, glusterd also listens for the cli requests on port 24007. But, for the sake of security, it listens using a reduced cli rpc program on the port. The reduced rpc program only contains read-only procs used for 'volume (info|list|status)', 'peer status' and 'system:: getwd' cli commands. CLI changes: The gluster cli now uses the glusterd socket file for communicating with glusterd by default. A new option '--gluster-sock' has been added to allow specifying the sockfile used to connect. Using the '--remote-host' option will make cli connect to the given host & port. Tests changes: cluster.rc has been modified to make use of socket files and use different log files for each glusterd. Some of the tests using cluster.rc have been fixed. Change-Id: Iaf24bc22f42f8014a5fa300ce37c7fc9b1b92b53 BUG: 980754 Signed-off-by: Kaushal M <kaushal@redhat.com> Reviewed-on: http://review.gluster.org/5280 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Krishnan Parthasarathi <kparthas@redhat.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* posix: Fix readv FOPM. Mohan Kumar2013-10-172-10/+2
| | | | | | | | | | | Suggested by Anand Avati in BD xlator code review. Change-Id: I31c353a26dfdeb3d0023c3f7e03ed25461d13c16 Signed-off-by: M. Mohan Kumar <mohan@in.ibm.com> BUG: 837495 Reviewed-on: http://review.gluster.org/6077 Reviewed-by: Vijay Bellur <vbellur@redhat.com> Tested-by: Vijay Bellur <vbellur@redhat.com>
* cluster/afr: Remove 'max' from the logPranith Kumar K2013-10-171-1/+1
| | | | | | | | | | | | This patch avoids giving more info to the user about the internal heuristic employed in afr, for quota sizes. Change-Id: Ice3a164399f09b6967500ec0c17dc340e7ae9aba BUG: 1016683 Signed-off-by: Pranith Kumar K <pkarampu@redhat.com> Reviewed-on: http://review.gluster.org/6098 Reviewed-by: Vijay Bellur <vbellur@redhat.com> Tested-by: Vijay Bellur <vbellur@redhat.com>
* afr: check for split-brain before proceeding with fopsRavishankar N2013-10-162-12/+33
| | | | | | | | | | | Bail out of fops if split brain has been detected during lookup Change-Id: Id387dbb1a25eec4a121dedceadc6069bdea24b5d BUG: 1010834 Signed-off-by: Ravishankar N <ravishankar@redhat.com> Reviewed-on: http://review.gluster.org/5988 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
* storage/posix: Lower log severity for ENODATA errors in getxattr()Vijay Bellur2013-10-151-1/+2
| | | | | | | | | Change-Id: I101e329cce4c1305615c63ebcb42355f6c3e85e0 BUG: 918052 Signed-off-by: Vijay Bellur <vbellur@redhat.com> Reviewed-on: http://review.gluster.org/6084 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
* dht: dht_lookup_dir_cbk should set op_errno as local->op_errnoKaushal M2013-10-151-1/+1
| | | | | | | | | | | | | | | | | | | | | | | Two glusterfs clients return inconsistent errnos when the bricks of the volume were down. Consider two gluster mounts. Mount 1 was done when the bricks were online. Mount 2 was done after the bricks were killed, (using the 'glusterfs' command instead of the mount script). For any request, mount 1 will return ENOTCONN, where as mount 2 will return ENOENT. This happens because for the 2nd mount, a fuse would send a lookup on '/' for any request, as it hadn't been done yet. The client xlator returns ENOTCONN, but the dht_lookup_dir_cbk changed this to ENOENT unconditionally when aggregating. So, fuse returned ENOENT, even though the errno should have been ENOTCONN. Change-Id: I4b7a6d84ce5153045a807fccc01485afe0377117 BUG: 1019095 Signed-off-by: Kaushal M <kaushal@redhat.com> Reviewed-on: http://review.gluster.org/6072 Reviewed-by: Anand Avati <avati@redhat.com> Tested-by: Anand Avati <avati@redhat.com>
* libglusterfs: Add monotonic clocking counter for timer threadHarshavardhana2013-10-1510-31/+31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | gettimeofday() returns the current wall clock time and timezone. Using these functions in order to measure the passage of time (how long an operation took) therefore seems like a no-brainer. This time suffer's from some limitations: a. They have a low resolution: “High-performance” timing by definition, requires clock resolutions into the microseconds or better. b. They can jump forwards and backwards in time: Computer clocks all tick at slightly different rates, which causes the time to drift. Most systems have NTP enabled which periodically adjusts the system clock to keep them in sync with “actual” time. The adjustment can cause the clock to suddenly jump forward (artificially inflating your timing numbers) or jump backwards (causing your timing calculations to go negative or hugely positive). In such cases timer thread could go into an infinite loop. From 'man gettimeofday': ---------- .. .. The time returned by gettimeofday() is affected by discontinuous jumps in the system time (e.g., if the system administrator manually changes the system time). If you need a monotonically increasing clock, see clock_gettime(2). .. .. ---------- Rationale: For calculating interval timing for Timer thread, all that’s needed should be clock as a simple counter that increments at a stable rate. This is necessary to avoid the jumps which are caused by using "wall time", this counter must be monotonic that can never “tick” backwards, ever. Change-Id: I701d31e71a85a73d21a6c5cd15583e7a5a645eeb BUG: 1017993 Signed-off-by: Harshavardhana <harsha@harshavardhana.net> Reviewed-on: http://review.gluster.org/6070 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
* cluster/afr: [Feature] Command implementation to get heal-countVenkatesh Somyajulu2013-10-148-45/+626
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently to know the number of files to be healed, either user has to go to backend and check the number of entries present in indices/xattrop directory. But if a volume consists of large number of bricks, going to each backend and counting the number of entries is a time-taking task. Otherwise user can give gluster volume heal vol-name info command but with this approach if no. of entries are very hugh in the indices/ xattrop directory, it will comsume time. So as a feature, new command is implemented. Command 1: gluster volume heal vn statistics heal-count This command will get the number of entries present in every brick of a volume. The output displays only entries count. Command 2: gluster volume heal vn statistics heal-count replica 192.168.122.1:/home/user/brickname Here if we are concerned with just one replica. So providing any one of the brick of a replica will get the number of entries to be healed for that replica only. Example: Replicate volume with replica count 2. Backend status: -------------- [root@dhcp-0-17 xattrop]# ls -lia | wc -l 1918 NOTE: Out of 1918, 2 entries are <xattrop-gfid> dummy entries so actual no. of entries to be healed are 1916. [root@dhcp-0-17 xattrop]# pwd /home/user/2ty/.glusterfs/indices/xattrop Command output: -------------- Gathering count of entries to be healed on volume volume3 has been successful Brick 192.168.122.1:/home/user/22iu Status: Brick is Not connected Entries count is not available Brick 192.168.122.1:/home/user/2ty Number of entries: 1916 Change-Id: I72452f3de50502dc898076ec74d434d9e77fd290 BUG: 1015990 Signed-off-by: Venkatesh Somyajulu <vsomyaju@redhat.com> Reviewed-on: http://review.gluster.org/6044 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
* cluster/afr : Implementation of command "gluster volume heal vn statistics"Venkatesh Somyajulu2013-10-1410-48/+610
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | "gluster volume heal volumename statistics" command gives the summary of the afr crawl done based on the entries present in the xattrop directory. Whenever afr crawls are attempted, the beginning time of crawl, end time of crawl, no of files healed, heal-failed count and number of files in split brain are shown along with the type of the crawl. If crawl is already in progress then it will give the number of files healed, heal failed count and number of files in split-brain from the beginning of the crawl and instead of telling the end time of the crawl, "CRAWL IN PROGRESS" message will be shown. Output format: command: "gluster volume heal volume-name statistics" Output: Gathering afr crawl statistics crawl statistics on volume volume-name has been successful ------------------------------------------------ Crawl statistics for brick no 0 Hostname of brick 192.168.122.248 Starting time of crawl: Wed Jul 10 15:52:38 2013 Ending time of crawl: Wed Jul 10 15:52:38 2013 Type of crawl: INDEX No. of entries healed: 0 No. of entries in split-brain: 0 No. of heal failed entries: 0 Starting time of crawl: Wed Jul 10 15:52:38 2013 Ending time of crawl: Wed Jul 10 15:52:38 2013 Type of crawl: INDEX No. of entries healed: 0 No. of entries in split-brain: 0 No. of heal failed entries: 0 ------------------------------------------------ Crawl statistics for brick no 1 Hostname of brick 192.168.122.1 Starting time of crawl: Wed Jul 10 15:52:42 2013 Ending time of crawl: Wed Jul 10 15:52:42 2013 Type of crawl: INDEX No. of entries healed: 0 No. of entries in split-brain: 0 No. of heal failed entries: 0 Starting time of crawl: Wed Jul 10 15:52:42 2013 Ending time of crawl: Wed Jul 10 15:52:42 2013 Type of crawl: INDEX No. of entries healed: 0 No. of entries in split-brain: 0 No. of heal failed entries: 0 -------------------------------------------------- Change-Id: I10bf9d10b005741db9973fb1352e0dd59ed99aa9 BUG: 949400 Signed-off-by: Venkatesh Somyajulu <vsomyaju@redhat.com> Reviewed-on: http://review.gluster.org/4790 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
* cluster/afr: Handle quota size xattr separately in lookupPranith Kumar K2013-10-101-0/+87
| | | | | | | | | | | | | | | | | | Quota size xattrs are not maintained by afr. There is a possibility that they differ even when both the directory changelog xattrs suggest everything is fine. So if there is at least one 'source' check among the sources which has the maximum quota size. Otherwise check among all the available ones for maximum quota size. This way if there is a source and stale copies it always votes for the 'source'. Change-Id: Ia222379cbafa7043dd03f533c105860f2c7b8b0d BUG: 1016683 Signed-off-by: Pranith Kumar K <pkarampu@redhat.com> Reviewed-on: http://review.gluster.org/6052 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Varun Shastry <vshastry@redhat.com> Reviewed-by: Anand Avati <avati@redhat.com>
* features/qemu-block: invoke bdrv_init() only onceBrian Foster2013-10-091-1/+5
| | | | | | | | | | | | | | | | bdrv_init() is intended to be invoked only once. If invoked again after initialization (i.e., due to graph changes), the block driver registration code can reinsert entries into bdrv_drivers, effectively corrupting the NULL terminated linked list. This manifests as an infinite loop for callers attempt to traverse the list (to locate a driver). BUG: 986775 Change-Id: I2f95bda3c753dece4648cdad009d0e2a2d16f644 Signed-off-by: Brian Foster <bfoster@redhat.com> Reviewed-on: http://review.gluster.org/6021 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
* cli,glusterd: Implement 'volume status tasks'Krutika Dhananjay2013-10-084-27/+91
| | | | | | | | | | | | | | | | | | | oVirt's Gluster Integration needs an inexpensive command that can be executed every 10 seconds to monitor async tasks and their parameters, for all volumes. The solution involves adding a 'tasks' sub-command to 'volume status' to fetch only the async task IDs, type and other relevant parameters. Only the originator glusterd participates in this command as all the information needed is available on all the nodes. This is to make the command suitable for being executed every 10 seconds. Change-Id: I1edc607baf29b001a5585079dec681d7c641b3d1 BUG: 1012346 Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com> Reviewed-on: http://review.gluster.org/6006 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Kaushal M <kaushal@redhat.com>
* NFS: showmount timesout on fetching export listRajesh Joseph2013-10-044-41/+84
| | | | | | | | | | | | | | | | | | | | | | Bug: 1015184 Issue: showmount timesout on fetching export list. Socket writev function is failing. Cause: XDR encoding of export list is failing. The calling function without checking the error returned by xdr_serialize_exports function is going ahead and writting into the socket causing the NFS process to hang. xdr_serialize_exports function returns -1 on error and message length on success. Fix: Caller should check if the function is returning -1 (error) or not before proceeding. Change-Id: Ic3a5a9356e47b2ac938dd3e429cf2b71c0a0c715 Signed-off-by: Rajesh Joseph <rjoseph@redhat.com> Reviewed-on: http://review.gluster.org/6030 Reviewed-by: Santosh Pradhan <spradhan@redhat.com> Reviewed-by: Niels de Vos <ndevos@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
* Fix build on NetBSD-currentEmmanuel Dreyfus2013-10-041-0/+4
| | | | | | | | | BUG: 764655 Change-Id: I2aaec9de617b0616525ad30f82ac6f75a6446d33 Signed-off-by: Emmanuel Dreyfus <manu@netbsd.org> Reviewed-on: http://review.gluster.org/6036 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
* cli: add node uuid in rebalance and remove brick status xml outputBala.FA2013-10-031-1/+22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds node uuid in rebalance/remove-brick status xml output. Output XML will look like <?xml version="1.0" encoding="UTF-8" standalone="yes"?> <cliOutput> <opRet>0</opRet> <opErrno>0</opErrno> <opErrstr/> <volRebalance> <op>3</op> <nodeCount>1</nodeCount> <node> <nodeName>localhost</nodeName> ==>> <id>883626f8-4d29-4d02-8c5d-c9f48c5b2445</id> <files>0</files> <size>0</size> <lookups>0</lookups> <failures>0</failures> <status>3</status> <statusStr>completed</statusStr> </node> <aggregate> <files>0</files> <size>0</size> <lookups>0</lookups> <failures>0</failures> <status>3</status> <statusStr>completed</statusStr> </aggregate> </volRebalance> </cliOutput> Change-Id: I5a1d4f9043b33b9e88150647a243ddb16154e843 BUG: 1012296 Signed-off-by: Bala.FA <barumuga@redhat.com> Reviewed-on: http://review.gluster.org/6005 Reviewed-by: Kaushal M <kaushal@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com>
* cluster/afr: Change Self-heal domain separator to ':'Pranith Kumar K2013-10-032-1/+3
| | | | | | | | | | | | | | | | | | | | '-' can be present in a volume. This may lead to domain collisions in future. Tests: Checked in gdb that domain comes with ':' separator: Breakpoint 1, pl_common_inodelk (frame=0x7fdabcce51a4, this=0x8bde20, volume=0x8b50d0 "r2-replicate-0:self-heal", inode=0x7fdab822f0e8, cmd=6, flock=0x7fdabc76eee4, loc=0x7fdabc76ede4, fd=0x0, xdata=0x7fdabc6e0ab0) at inodelk.c:597 Change-Id: I4456ae35ac8bf21e6361c34e9ad437f744a2e84b BUG: 993981 Signed-off-by: Pranith Kumar K <pkarampu@redhat.com> Reviewed-on: http://review.gluster.org/6025 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
* glusterd: Validating invalid log-level under geo-rep config options.Ajeet Jha2013-10-032-5/+18
| | | | | | | | | | | Change-Id: I8ff6b48ef41fd6e9ea68c42dfb9878f8a08ed627 BUG: 1010874 Signed-off-by: Ajeet Jha <ajha@redhat.com> Reviewed-on: http://review.gluster.org/5989 Reviewed-by: Avra Sengupta <asengupt@redhat.com> Reviewed-by: Amar Tumballi <amarts@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Venky Shankar <vshankar@redhat.com>
* protocol/server: eliminate an unnecessary frame create and destroyKaleb S. KEITHLEY2013-10-021-25/+11
| | | | | | | | | | | | | | | | | | connection_cleanup creates a frame solely so that it can be copied. But the process of copying creates a new frame, and there's nothing apparently magic about the one being copied; we can eliminate an unnecessary create and destroy. Which in the grand scheme of things probably isn't the worst thing we do, but it's low hanging fruit. Change-Id: I4a23b84a53e086137b7d4167ad8c20b673d1ffe5 Signed-off-by: Kaleb S. KEITHLEY <kkeithle@redhat.com> Reviewed-on: http://review.gluster.org/6019 Reviewed-by: Amar Tumballi <amarts@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
* Logging : Improved the log message on unlock failure in afr_unlock_inodelk_cbk.Anuradha2013-09-301-2/+6
| | | | | | | | | | | "unlock failed on 1 unlock" seems meaningless in the log message. Improved it. Change-Id: If67d3f9d4aa5310d0b6728a6c89fa58a5cc93d12 BUG: 1012947 Signed-off-by: Anuradha <atalur@redhat.com> Reviewed-on: http://review.gluster.org/6012 Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com>
* glusterd: Calculate volume op-versions only on set/resetKaushal M2013-09-293-6/+69
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The volume op-versions are calculated during a volume set/reset, reading a volume from disk and importing a volume during probe or volume sync. The calculation of the volume op-version depends on the clusters op-version as some features are enabled automatically depending on the clusters op-version. We also don't store the volume op-versions persistently and don't export the volume op-versions during sync. Due to this, there can occur cases which will lead to inconsistencies in volumes in different peers. One such case is below, Consider, a cluster made up 3 peers P1, P2 and P3, operating at op-version N. The cluster has two volumes V1 and V2, which have volume op-versions N (since volume op-version cannot be greater than cluster op-version). We have, Cluster-op-version = N V1 op-version = N V2 op-version = N A set operation on V1 causes the clusters op-version to be bumped up to N+1. Assume that there exist some features that are automatically enabled on op-version N+1. The op-version of V2 remains at N as no operation has been performed on it. So, Cluster op-version = N+1 V1 op-version = N+1 V2 op-version = N Now, we probe a new peer P4. On the new peer we will have the following op-versions, Cluster op-version = N+1 V1 op-version = N+1 V2 op-version = N+1 This happens because we don't send volume op-versions during the sync after probe. P4 will freshly calculate the op-version of V2 (assuming features have been auto enabled due to the cluster op-version being N+1) as N+1. Another case is when glusterd on a peer restarts. Assume P3 was restarted, glusterd will recalculate the volume op-versions during the restore state. Again, op-version of V2 will be calculated as N+1 assuming auto enabled features. This will lead to inconsistency in the volume representation in memory and on disk, as glusterd will assume the volume contains auto enabled features, but the volfiles don't contain them as they were not regenrated. These kind of issues can be solved by calculating the volume op-version only when features are enabled and disabled (ie. during volume set/reset), persisting the volume-op-versions and exporting/importing them. Change-Id: I52de0668c92628622e85f4588fb28829a7231132 BUG: 1005043 Signed-off-by: Kaushal M <kaushal@redhat.com> Reviewed-on: http://review.gluster.org/5568 Reviewed-by: Amar Tumballi <amarts@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
* glusterd: Fix storing volumes on setting global optsKaushal M2013-09-291-3/+6
| | | | | | | | | | | | | | | | | | Glusterd would not store all the volumes when a global options were set. When setting a global option, like 'nfs.*' options, glusterd used to modify the volinfo for all the volumes, but would store only the volinfo for the named volume. This lead to mismatch in the persisted and the in-memory representation of those volumes, which lead to problems like peers being rejected because of volume mismatches. Change-Id: I8bca10585e34b7135cb32af0055dbd462b3fb9b5 BUG: 1012400 Signed-off-by: Kaushal M <kaushal@redhat.com> Reviewed-on: http://review.gluster.org/6007 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Niels de Vos <ndevos@redhat.com> Reviewed-by: Amar Tumballi <amarts@redhat.com> Reviewed-by: Anand Avati <avati@redhat.com>
* glusterd: Set errstr appropriately on peer op failureKrutika Dhananjay2013-09-291-11/+17
| | | | | | | | | | Change-Id: I27f5f7cd54115d7b236b42f6beaaa05a8b379dd7 BUG: 1010153 Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com> Reviewed-on: http://review.gluster.org/5978 Reviewed-by: Harshavardhana <harsha@harshavardhana.net> Reviewed-by: Amar Tumballi <amarts@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com>
* features/changelog : Improvement in changelog "encoding-change".ajha2013-09-294-17/+26
| | | | | | | | | | | | | | | | | change in encoding method of changelog was critical section for "fop dispatch thread", "roll-over thread" and "reconfigure dispatch thread". In this patch the "encoding-method" is changed by the reconfigure dispatch thread lazily during handle_change, which solves the concurrency among the racing threads. BUG: 1002940 Change-Id: I78c3e8887efa46d0fcc60755cdf4243031cfa3eb Signed-off-by: Ajeet Jha <ajha@redhat.com> Reviewed-on: http://review.gluster.org/5844 Reviewed-by: Venky Shankar <vshankar@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Harshavardhana <harsha@harshavardhana.net>
generated by cgit (git 2.34.1) at 2024-11-18 05:13:48 +0000