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* Merge "common-utils: Move glusterd_is_service_running() to common-utils" ↵quotaVijay Bellur2013-08-126-46/+43
|\ | | | | | | into quota
| * common-utils: Move glusterd_is_service_running() to common-utilsKrutika Dhananjay2013-08-126-46/+43
| | | | | | | | | | Change-Id: I96cbe03511cbecb112418da82c44c00fbab74ba3 Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com>
* | tests/basic: Improve quota.t to include enforcement testsVijay Bellur2013-08-121-6/+38
|/ | | | | | Change-Id: I7fce33e7d1c075b9610df7f6e9db1cc862630170 BUG: 969461 Signed-off-by: Vijay Bellur <vbellur@redhat.com>
* Merge "features/marker: Fix an incorrect NULL check" into quotaVijay Bellur2013-08-111-3/+4
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| * features/marker: Fix an incorrect NULL checkVijay Bellur2013-08-111-3/+4
| | | | | | | | | | | | Change-Id: If9bb12b352af5a691bd17fc51f0273685ecb12e8 BUG: 969461 Signed-off-by: Vijay Bellur <vbellur@redhat.com>
* | features/marker: reduce severity of an annoying log.Vijay Bellur2013-08-111-2/+2
|/ | | | | Change-Id: If65129812b10afc19a22b2b0c468b53043bde1db BUG: 969461
* Merge "features/marker: refactor marker quota for better readability (part ↵Vijay Bellur2013-08-102-23/+38
|\ | | | | | | 1)." into quota
| * features/marker: refactor marker quota for better readability (part 1).Vijay Bellur2013-08-102-23/+38
| | | | | | | | | | Change-Id: I1133c5ca24f2b395103d470bde77be966d17d938 Signed-off-by: Vijay Bellur <vbellur@redhat.com>
* | Merge "features/quota: Add support for statedump" into quotaVijay Bellur2013-08-102-0/+41
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| * features/quota: Add support for statedumpVijay Bellur2013-08-102-0/+41
| | | | | | | | | | | | | | | | - dumps members of quota_priv_t. - also added validation count to keep track of number of validations done. Change-Id: I998fcccacf4bd7c61ead9ca9a489e0dc0e73763a Signed-off-by: Vijay Bellur <vbellur@redhat.com>
* | quota: saner defaults, min and max values for timeoutsKrishnan Parthasarathi2013-08-101-4/+4
|/ | | | | | | | Also changed default soft-limit percentage to 80% of configured quota limit. Change-Id: Ia07b569216189a6e3bedb5cdbf8ffeb9f7739444 Signed-off-by: Krishnan Parthasarathi <kparthas@redhat.com>
* glusterd, quotad: volume-id option fixupsBrian Foster2013-08-092-2/+21
| | | | | | | | | | | A few little hacks to set the volume id on the quota server and a mapping option on quotad to map the volume name to the uuid passed via the lookup request. Change-Id: Ic151acb18ed29d2ee4ae5d1bc6841ae4a4de176a Original-author: Brian Foster <bfoster@redhat.com> Signed-off-by: Brian Foster <bfoster@redhat.com> Signed-off-by: Krishnan Parthasarathi <kparthas@redhat.com>
* features/quota: Fix compilation warningsKrutika Dhananjay2013-08-092-5/+4
| | | | | | | | | | | | | | | | | | The following are the compilation warnings I encountered: ----------------------------------- In file included from quota.c:12:0: quota.h:190:1: error: 'packed' attribute ignored [-Werror=attributes] quota.c: In function 'quota_lookup_cbk': quota.c:618:23: error: assignment from incompatible pointer type [-Werror] quota.c:637:53: error: 'soft_lim' undeclared (first use in this function) quota.c:637:53: note: each undeclared identifier is reported only once for each function it appears in quota.c:608:28: error: unused variable 'size' [-Werror=unused-variable] cc1: all warnings being treated as errors ----------------------------------- Change-Id: I7a09e654a9cc064a423a5f8362f2a9c6abbc7edb Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com>
* features/quota: minor fixes to enforcerv3.4quota1Raghavendra G2013-08-092-12/+5
| | | | | | | | | | * send size query to quotad only if limit is set on that inode. * don't check for loc->parent while querying size from quotad, since its a nameless lookup Change-Id: I10dc2f9d1e40875382040b53cb4ee5f6d9a27133 BUG: 969461 Signed-off-by: Raghavendra G <rgowdapp@redhat.com>
* features/quota: fixes to code reading limits from xattrs.Raghavendra G2013-08-093-46/+34
| | | | | | | | | | It was assumed that hard and soft limits are stored as two different xattrs on disk. However they are stored as two members of a structure which is stored as a value for a single key. Change-Id: I947fa5c375209c31fe1511bda0d5cb0e249af9ba BUG: 969461 Signed-off-by: Raghavendra G <rgowdapp@redhat.com>
* glusterd,cli: changes to quota list <path> ...Krutika Dhananjay2013-08-092-321/+82
| | | | | Change-Id: Ia37020c3aa11af6eed3af09cfe390b848b028b6a Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com>
* glusterd: Clean up and fix glusterd_op_quota()Krutika Dhananjay2013-08-094-130/+85
| | | | | | | | | | | | | | | | | | | | ... and also fix cli logging In glusterd_op_quota(), * do not modify ret after going to 'out' as this causes the failure status (-1) to be overwritten, thereby causing the command to return 0 even on failure. * knock off additional labels like create_vol. * replace 'if' statements with 'switch case' statement. * delete only the 3 timeouts and the defaul-soft-limit, if present, from volinfo->dict, upon disablement of quota. Change-Id: If486a5373b66f2379d6d041a974d9b824fcb8518 Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com>
* glusterd: Changes to 'quota remove' subcommand behaviorKrutika Dhananjay2013-08-091-44/+39
| | | | | Change-Id: Ifdc60071146587dc5c60d9a53a92d49b3487fd82 Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com>
* glusterd: club limit-usage and soft-limit into a single commandKrutika Dhananjay2013-08-096-221/+183
| | | | | Change-Id: I5f680675576aeec584b497eb25dd804a9dd6d690 Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com>
* quota: Fix initialisation of privKrutika Dhananjay2013-08-081-0/+2
| | | | | | | Original-author: Vijay Bellur <vbellur@redhat.com> Change-Id: Iea21ef1cdfb78c79482ad02f81734516b7818714 Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com>
* Change branch to quota.Vijay Bellur2013-08-081-1/+1
| | | | Change-Id: I8a6d49cc101da219404633d43b8d211f816094a7
* features/quota: Allow the gluster 'special' processes to supercede the limitsVijay Bellur2013-08-081-4/+18
| | | | | | | | | Don't block the gluster internal processes like rebalance, gsyncd, self heal etc from the disk quotas and the xattrs setting. Solution: Allow all the clients with negative PID. Change-Id: Iaeaa8096e00d48b2a4c3f5df61d103da0b3d6598
* features/quota: Fix compilation warningsVijay Bellur2013-08-082-8/+24
| | | | Change-Id: Ie0b3af8b52f2d909c61094bdcaccfd724ff4ecc0
* features/quota: Introduce quota log helper function.Vijay Bellur2013-08-082-0/+55
| | | | Change-Id: I38077c7adc497b314f4037cbbb116458a26ed589
* glusterd, cli: Provide status of quotad in 'volume status'Krutika Dhananjay2013-08-0811-34/+117
| | | | | | Change-Id: I5e90376ecfe11ae5a3bca936d9d9acdd54c337d7 BUG: 969461 Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com>
* features/quota: design changesRaghavendra G2013-08-0813-1387/+1756
| | | | | | | | | | | | | | * hard and soft limits are persisted in xattrs of the inode. Associating limits with inode instead of maintaining as a global list helps us to scale better. * quotad-aggregator acts as a special client to provide cluster view through an rpc program. Quota enforcer loaded on brick uses this to get aggregated directory sizes. Aggregated sizes are cached for a timeout period in in-memory inode contexts. Signed-off-by: Raghavendra G <rgowdapp@redhat.com> Change-Id: I2ab508d9d4fe224bc1d8cf01cf2b7969dd4200bb BUG: 969461
* Merge "glusterd: Move timeout options and default-soft-limit to quota ↵Krishnan Parthasarathi2013-08-042-80/+6
|\ | | | | | | xlator" into quota-improvements
| * glusterd: Move timeout options and default-soft-limit to quota xlatorKrutika Dhananjay2013-07-312-80/+6
| | | | | | | | | | | | | | | | | | Write the 3 timeout options {soft-timeout, hard-timeout, alert-time} and default-soft-limit, if explicitly set, into brick volfiles. Change-Id: Ie3229a8ab1b081a5936defd4f977afc8a19dad50 BUG: 969461 Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com>
* | glusterd: Spawn quotad on every nodeKrutika Dhananjay2013-07-313-31/+46
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ... and also trigger a reconfigure when the following quota sub-commands are executed: a. default-soft-limit, b. hard-timeout, c. soft-timeout, and d. alert-time. Also start/restart/stop quotad only when quota is enabled or disabled on any volume. Tests performed in a two node cluster: a. Create and start a volume, enable quota on it and check if quotad is spawned on both the nodes. b. Execute all quota sub-commands on the volume except 'enable' and 'disable' and verify that the pid of quota daemon doesn't change. c. Stop the volume and verify that quotad is stopped. d. Start it again. Quotad must be started now. e. Create, start and enable quota on a second volume, verify that the pid of quotad changes on both the nodes (indicating a restart). f. Disable quota on one of the volumes and verify that quotad's pid changes. g. Disable quota on the second volume too and verify that quotad is stopped on both the nodes. h. Enable quota again on one of the volumes, and verify that quotad is started on both the nodes. i. Add a new node into this cluster and verify that quotad is spawned on this node too. Change-Id: Ie93ab69c685051e196c377cff15078a1cde17fca BUG: 969461 Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com>
* Change branch to quota-improvementsVijay Bellur2013-07-291-1/+1
| | | | | Change-Id: Idb1ed302a73e645cef66e5096a6cef83290b10ce Signed-off-by: Vijay Bellur <vbellur@redhat.com>
* features/quota: Improvements to quotaVarun Shastry2013-07-2930-1243/+3441
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Old implementation * Client side implementation of quota - Not secure - Increased traffic in updating the ctx New Implementation * 2 stages of quota implementation is done: Soft and hard quota Upon reaching soft quota limit on the directory it logs/alerts in the quota daemon log (ie DEFAULT_LOG_DIR/quotad.log) and no more writes allowed after hard quota limit. After reaching the soft-limit the daemon alerts the user/admin repeatively for every 'alert-time', which is configurable. * Quota is moved to server-side. There will be 2 quota xlators i. Quota Server It takes care of the enforcing the quota and maintains the context specific to the brick. Since this doesn't have the complete picture of the cluster, cluster wide usage is updated from the quota daemon. This updated context is saved and used for the enforcement. It updates its context by searching the QUOTA_UPDATE_KEY from the dict in the setxattr call, and is updated from nowhere else. The quota is always loaded in the server graph and is by passed if the feature is not enabled. Options specific to quota-server: server-quota - Specifies whether the features is on/off. It is used to by pass the quota if turned off. deem-statfs - If set to on, it takes quota limits into consideration while estimating fs size. (df command) ii. Quota Daemon This is the new xlator introduced with this patch. Its the *gluster client* process with no mount point, started upon enabling quota or restarting the volume. This is a single process for all the volumes in the cluster. Its volfile stored in GLUSTERD_DEFAULT_WORKI_DIR/quotad/quotad.vol. It queries for the sizes on all the bricks, aggregates the size and sends back the updated size, periodically. The timeout between successive updation is configurable and typically/by default more for below-soft-quota usage and less for above-soft-quota usage. It maintains the timeout inside the limit structure based on the usage; below soft limit and above soft limit. There will be thread running per volume which iterates through the list and decides whether the size to be queried in the current iteration based on its timeout. It takes the next iteration time taking the least of the timeouts in the list of entries. Maintains a separate inode table for each volume in the quotad. In the first iteration it builds the table for quota-dirs (dirs on which limit is set) and its components. Options specific to quotad: hard-timeout - Timeout for updation of usage to the quota-server when the usage is crosses the soft-limit. soft-timeout - Timeout for the updation of usage to the quota-server when the usage is below soft-limit. alert-time - Frequency of logging after the usage reached soft limit. Options common to both: default-soft-limit - This is used when individual paths are not configured with soft-limit and default value of this option is 90% of the hard-limit. limit-set - String containing all the limits. Thus in the current implementation we'll have 2 quota xlators: one in server graph and one in trusted client (quota daemon) of which the sole purpose will be to aggregate the quota size xattrs from all the bricks and send the same to server quota xlator. * Changes in glusterd and CLI A single volfile is created for all the volumes, similar to nfs volfile. All files related to quota client (volfile, pid etc) are stored in GLUSTERD_DEFAULT_WORK_DIR/quotad/. The new pattern of the quota limit stores in limit-set = <single-dir-limit>[,<single-dir-limit>] single-dir-limit = <abs-path>:<hard-limit>[:<soft-limit-in-percent>] It also introduces new options: volume quota <VOLNAME> {enable|disable|list [<path> ...]|remove <path>| default-soft-limit <percent>} | volume quota <VOLNAME> {limit-usage <path> <size> |soft-limit <path> <percent>} | volume quota <VOLNAME> {alert-time|soft-timeout|hard-timeout} {<time>} Credit: Raghavendra Bhat <rabhat@redhat.com> Varun Shastry <vshastry@redhat.com> Shishir Gowda <sgowda@redhat.com> Kruthika Dhananjay <kdhananj@redhat.com> Brian Foster <bfoster@redhat.com> Krishnan Parthasarathi <kparthas@redhat.com> Change-Id: I16ec5be0c2faaf42b14034b9ccaf17796adef082 BUG: 969461 Signed-off-by: Varun Shastry <vshastry@redhat.com>
* doc: Create a features folder.testVijay Bellur2013-07-253-0/+74
| | | | | | | | | | | | Moved rdma and bd documents to doc/features. Added a new document on rebalance. Change-Id: I04269202adc9605754fc29876433c88480b822a3 BUG: 811311 Signed-off-by: Vijay Bellur <vbellur@redhat.com> Reviewed-on: http://review.gluster.org/5395 Reviewed-by: Anand Avati <avati@redhat.com> Tested-by: Anand Avati <avati@redhat.com>
* features/changelog: fixes when enabling changelogVenky Shankar2013-07-252-29/+41
| | | | | | | | | | | | | Other enhancements being: * ignore fops made by rebalance * ignore internally triggered fops BUG: 987734 Change-Id: I7dd164ae3c209fdb8ec43a27e67b8846f937c93b Signed-off-by: Venky Shankar <vshankar@redhat.com> Reviewed-on: http://review.gluster.org/5380 Reviewed-by: Amar Tumballi <amarts@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com>
* glusterfsd: is_mgmt_rpc_reconnect should not be `char` but gf_boolean_tHarshavardhana2013-07-251-2/+2
| | | | | | | | | Change-Id: I35c4dc040ebb5e926c7f54d823d1c81b1228bd4f BUG: 763046 Signed-off-by: Harshavardhana <harsha@harshavardhana.net> Reviewed-on: http://review.gluster.org/5345 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* write-behind: preserve error returned as-isAmar Tumballi2013-07-241-5/+1
| | | | | | | | | Change-Id: Ib766403774c1323e0bbddafedeaa47e7fa3a59fa Signed-off-by: Amar Tumballi <amarts@redhat.com> BUG: 987415 Reviewed-on: http://review.gluster.org/5296 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
* core: increase the auxillary group limit to 65536Anand Avati2013-07-247-12/+75
| | | | | | | | | | | | | Make the allocation of groups dynamic and increase the limit to 65536. Change-Id: I702364ff460e3a982e44ccbcb3e337cac9c2df51 BUG: 953694 Signed-off-by: Anand Avati <avati@redhat.com> Reviewed-on: http://review.gluster.org/5111 Reviewed-by: Xavier Hernandez <xhernandez@datalab.es> Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* cli :remove-brick process output leads to ambiguitysusant2013-07-241-3/+6
| | | | | | | | | | | | | The output of remove-brick status as "Not started" leads to ambiguity.We should not show the status of the Server nodes which do not participate in the remove-brick process. Change-Id: I85fea40deb15f3e2dd5487d881f48c9aff7221de BUG: 986896 Signed-off-by: susant <spalai@redhat.com> Reviewed-on: http://review.gluster.org/5383 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* features/marker: pass xdata in marker_unlink()Venky Shankar2013-07-242-1/+6
| | | | | | | | | | Change-Id: Ia310af96b25f29351f3adc4bbc97aea271df7673 BUG: 987747 Signed-off-by: Venky Shankar <vshankar@redhat.com> Reviewed-on: http://review.gluster.org/5379 Reviewed-by: Amar Tumballi <amarts@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* storage/posix: Fix conditional compiling for syncfsPranith Kumar K2013-07-241-1/+4
| | | | | | | | | Change-Id: Ief22e1c0f2b5074060752d70da41ae93f1028d62 BUG: 927146 Signed-off-by: Pranith Kumar K <pkarampu@redhat.com> Reviewed-on: http://review.gluster.org/5381 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* cli: gluster volume heal commands are more elaborativeVenkatesh Somyajulu2013-07-241-5/+30
| | | | | | | | | | | | | | | | | | | | | | | | | | | 1. "gluster volume heal volume-name" output :Launching heal operation to perform index self heal on volume volume-name has been successful 2. "gluster volume heal volume-name full" Output :Launching heal operation to perform full self heal on volume volume-name has been successful 3. "gluster volume heal volume-name info" Output :Gathering list of entries to be healed on volume volume-name has been successful 4. "gluster volume heal volume-name info healed" Output :Gathering list of healed entries on volume volume-name has been successful 5. "gluster volume heal volume-name info split-brain" Output :Gathering list of split brain entries on volume volume-name has been successful 6. "gluster volume heal volume-name info heal-failed" Output :Gathering list of heal failed entries on volume volume-name has been successful Change-Id: I74c90e8129d23d513ddb7879358a9d21c94a5c0d BUG: 978936 Signed-off-by: Venkatesh Somyajulu <vsomyaju@redhat.com> Reviewed-on: http://review.gluster.org/5286 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* cluster/dht: mark linkfile creation/deletion as internal fopshishir gowda2013-07-241-9/+39
| | | | | | | | | | | | | | | | | | | Currently dht creates/deletes linkfiles for various ops like rename/linking and when layout changes. dht_linkfile_create already sends a key GLUSTERFS_INTERNAL_FOP_KEY in dict to identify this as an internal fop and not user based op. Enhancing rename related links/unlinks to send this key too. Marker/changelog or other xlators can now identify these as internal fops and handle them accordingly Change-Id: Ib1ca789e6dbce48703c55ad3f4f88f7cd2df3d06 BUG: 987428 Signed-off-by: shishir gowda <sgowda@redhat.com> Reviewed-on: http://review.gluster.org/5335 Reviewed-by: Amar Tumballi <amarts@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* storage/posix: implement batched fsync in a single threadAnand Avati2013-07-235-1/+288
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Because of the extra fsync()s issued by AFR transaction, they could potentially "clog" all the io-threads denying unrelated operations from making progress. This patch assigns a dedicated thread to issues fsyncs, as an experimental feature to understand performance characteristics with the approach. As a basis, incoming individual fsync requests are grouped into batches, falling in the same @batch-fsync-delay-usec window of time. These windows can extend in practice, as processing of the previous batch can take longer than @batch-fsync-delay-usec while new requests are getting batched. The feature support three modes (similar to the -S modes of fs_mark) - syncfs: In this mode one syncfs() is issued per batch, instead of N fsync()s (one per file.) - syncfs-single-fsync: In this mode one syncfs() is issued per batch (which, on Linux, guarantees the completion of write-out of dirty pages in the filesystem up to that point) and one single fsync() to synchronize or flush the controller/drive cache. This corresponds to -S 2 of fsmark. - syncfs-reverse-fsync: In this mode, one syncfs() is issued per batch, and all the open files in that batch are fsync()'ed in the reverse order of the queue. This corresponds to -S 4 of fsmark. - reverse-fsync: In this mode, no syncfs() is issued and all the files in the batch are fsync()'ed in the reverse order. This corresponds to -S 3 of fsmark. Change-Id: Ia1e170a810c780c8d80e02cf910accc4170c4cd4 BUG: 927146 Signed-off-by: Anand Avati <avati@redhat.com> Reviewed-on: http://review.gluster.org/4746 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* tests: Avoid timing delays caused by fsyncPranith Kumar K2013-07-234-0/+4
| | | | | | | | Change-Id: I2da53dd14d7352bdc878fce5a9019a955e150ce9 Signed-off-by: Pranith Kumar K <pkarampu@redhat.com> Reviewed-on: http://review.gluster.org/5377 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
* cli: Increased timeout for gluster volume heal commnadsVenkatesh Somyajulu2013-07-232-3/+6
| | | | | | | | | | | | | | | | | Problem: If number of files are very large, then gluster volume heal volumename info commnads take large time. So timeout of 2 minutes seems to be insufficient. Fix: Increased timeout to 10 minutes Change-Id: I5f847163e01c4afbb587b726833ad80183f1a928 BUG: 986945 Signed-off-by: Venkatesh Somyajulu <vsomyaju@redhat.com> Reviewed-on: http://review.gluster.org/5372 Reviewed-by: Kaushal M <kaushal@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com>
* cluster/afr: Handle parallel hardlinks self-healPranith Kumar K2013-07-232-0/+56
| | | | | | | | | Change-Id: Ieda11870c65edae500140b6c061f15a7b3f264f3 BUG: 986905 Signed-off-by: Pranith Kumar K <pkarampu@redhat.com> Reviewed-on: http://review.gluster.org/5370 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* glusterfsd: Use dynamic volfile bufferKaushal M2013-07-231-1/+20
| | | | | | | | | | | | | Glusterfsd used a fixed buffer to store volfiles fetched via getspec. This caused problems with large volfiles. Changining this to a dynamic buffer allows large volfiles to be loaded in memory. Change-Id: I40236dcb1c37b9a0136dfb5231cafabb3d4f00dc BUG: 986100 Signed-off-by: Kaushal M <kaushal@redhat.com> Reviewed-on: http://review.gluster.org/5373 Reviewed-by: Vijay Bellur <vbellur@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com>
* move 'xlators/marker/utils/' to 'geo-replication/' directoryAvra Sengupta2013-07-2225-159/+9
| | | | | | | | | | Change-Id: Ibd0faefecc15b6713eda28bc96794ae58aff45aa BUG: 847839 Original Author: Amar Tumballi <amarts@redhat.com> Signed-off-by: Avra Sengupta <asengupt@redhat.com> Reviewed-on: http://review.gluster.org/5133 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* features/changelog: changelog translatorAvra Sengupta2013-07-2235-16/+5053
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is the initial version of the Changelog Translator. What is it ----------- Goal is to capture changes performed on a GlusterFS volume. The translator needs to be loaded on the server (bricks) and captures changes in a plain text file inside a configured directory path (controlled by "changelog-dir", should be somewhere in <export>/.glusterfs/changelog by default). Changes are classified into 3 types: - Data: : TYPE-I - Metadata : TYPE-II - Entry : TYPE-III Changelog file is rolled over after a certain time interval (defauls to 60 seconds) after which a changelog is started. The thing to be noted here is that for a time interval (time slice) multiple changes for an inode are recorded only once (ie. say for 100+ writes on an inode that happens within the time slice has only a single corresponding entry in the changelog file). That way we do not bloat up the changelog and also save lots of writes. Changelog Format ----------------- TYPE-I and TYPE-II changes have the gfid on the entity on which the operation happened. TYPE-III being a entry op requires the parent gfid and the basename. Changelog format has been kept to a minimal and it's upto the consumers to do the heavy loading of figuring out deletes, renames etc.. A single changelog file records all three types of changes, with each change starting with an identifier ("D": DATA, "M": METADATA and "E": ENTRY). Option is provided for the encoding type (See TUNABLES). Consumers ---------- The only consumer as of today would be geo-replication, although backup utilities, self-heal, bit-rot detection could be possible consumers in the future. CLI ---- By default, change-logging is disabled (the translator is present in the server graph but does nothing). When enabled (via cli) each brick starts to log the changes. There are a set of tunable that can be used to change the translators behaviour: - enable/disable changelog (disabled by default) gluster volume set <volume> changelog {on|off} - set the logging directory (<brick>/.glusterfs/changelogs is the default) gluster volume set <volume> changelog-dir /path/to/dir - select encoding type (binary (default) or ascii) gluster volume set <volume> encoding {binary|ascii} - change the rollover time for the logs (60 secs by default) gluster volume set <volume> rollover-time <secs> - when secs > 0, changelog file is not open()'d with O_SYNC flag - and fsync is trigerred periodically every <secs> seconds. gluster volume set <volume> fsync-interval <secs> features/changelog: changelog consumer library (libgfchangelog) A shared library is provided for the consumer of the changelogs for easy acess via APIs. Application can link against this library and request for changelog updates. Conversion of binary logs to human-readable ascii format is also taken care by the library which keeps a copy of the changelog in application provided working directory. Change-Id: I75575fb7f1c53d2bec3dba1a329ea7bb3c628497 BUG: 847839 Original Author: Venky Shankar <vshankar@redhat.com> Signed-off-by: Avra Sengupta <asengupt@redhat.com> Reviewed-on: http://review.gluster.org/5127 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* log: send current gf_log to syslog conditionallyBala.FA2013-07-193-19/+170
| | | | | | | | | | | | | | | | When compile time option GF_USE_SYSLOG is enabled (which is default), generated logs are sent to syslog with error code ERR_DEV. User can opt to use traditional log at run time by creating /var/log/glusterd/logger.conf file and restarting respective gluster services. Change-Id: I9837d0f99da1afc2189d7ecd214c4293ec53715a BUG: 928648 Signed-off-by: Bala.FA <barumuga@redhat.com> Reviewed-on: http://review.gluster.org/5002 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* log: enhance syslog logging using CEE formatBala.FA2013-07-193-1/+231
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch enables to use syslog as log target in addition to the default. The logs are sent in CEE format (http://cee.mitre.org/). This logging can be disabled using compile time option by ./configure --disable-syslog (or) rpmbuild glusterfs.tar.gz --without syslog The framework provides two api void gf_openlog (const char *ident, int option, int facility); void gf_syslog (int error_code, int facility_priority, char *format, ...); consumers need to call gf_openlog() prior to gf_syslog() like the way traditional syslog function calls. error_code is mandatory when using gf_syslog(). For example, gf_openlog (NULL, -1, -1); gf_syslog (GF_ERR_DEV, LOG_ERR, "error reading configuration file"); Using syslog, admin is free to configure logger to * reduce repeated log messages * forward logs to remote logger * execute a command on certain log pattern * alert people for certain log pattern by email, snmp etc * and many more Change-Id: Ibacbcbbc547192893fc4a46b387496b622e4811f BUG: 928648 Signed-off-by: Bala.FA <barumuga@redhat.com> Reviewed-on: http://review.gluster.org/4915 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
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