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* cluster/afr : Prevent inode-evict during split-brain resolutionAnuradha2015-05-071-0/+1
| | | | | | | | | | | | | | | | | | | | | 1) Provided setfattr command to set timeout for split-brain choice. 2) If split-brain inspection/resolution is being done from the mount for a file, ref the inode when split-brain-choice is set. This inode will be unconditionally unref-ed after timeout seconds set by the user/default otherwise. 3) Updated the doc and testcase to reflect the changes. Change-Id: I15c9037dee28855f21e680e7e3632e1f48dba4e1 BUG: 1209104 Signed-off-by: Anuradha <atalur@redhat.com> Reviewed-on: http://review.gluster.org/10134 Reviewed-by: Krutika Dhananjay <kdhananj@redhat.com> Reviewed-by: Ravishankar N <ravishankar@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com> Tested-by: NetBSD Build System Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
* glusterd: remove replace brick with data migration support form cli/glusterdGaurav Kumar Garg2015-05-071-1/+0
| | | | | | | | | | | | | | | | Replace-brick operation with data migration support have been deprecated from gluster. With this fix replace brick command will support only one commad gluster volume replace-brick <VOLNAME> <SOURCE-BRICK> <NEW-BRICK> {commit force} Change-Id: Ib81d49e5d8e7eaa4ccb5830cfec2bc081191b43b BUG: 1094119 Signed-off-by: Gaurav Kumar Garg <ggarg@redhat.com> Reviewed-on: http://review.gluster.org/10101 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Kaushal M <kaushal@redhat.com>
* ctr/xlator: Named lookup heal of pre-existing files, before ctr was ON.Joseph Fernandes2015-05-061-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Problem: The CTR xlator records file meta (heat/hardlinks) into the data. This works fine for files which are created after ctr xlator is switched ON. But for files which were created before CTR xlator is ON, CTR xlator is not able to record either of the meta i.e heat or hardlinks. Thus making those files immune to promotions/demotions. Solution: The solution that is implemented in this patch is do ctr-db heal of all those pre-existent files, using named lookup. For this purpose we use the inode-xlator context variable option in gluster. The inode-xlator context variable for ctr xlator will have the following, a. A Lock for the context variable b. A hardlink list: This list represents the successful looked up hardlinks. These are the scenarios when the hardlink list is updated: 1) Named-Lookup: Whenever a named lookup happens on a file, in the wind path we copy all required hardlink and inode information to ctr_db_record structure, which resides in the frame->local variable. We dont update the database in wind. During the unwind, we read the information from the ctr_db_record and , Check if the inode context variable is created, if not we create it. Check if the hard link is there in the hardlink list. If its not there we add it to the list and send a update to the database using libgfdb. Please note: The database transaction can fail(and we ignore) as there already might be a record in the db. This update to the db is to heal if its not there. If its there in the list we ignore it. 2) Inode Forget: Whenever an inode forget hits we clear the hardlink list in the inode context variable and delete the inode context variable. Please note: An inode forget may happen for two reason, a. when the inode is delete. b. the in-memory inode is evicted from the inode table due to cache limits. 3) create: whenever a create happens we create the inode context variable and add the hardlink. The database updation is done as usual by ctr. 4) link: whenever a hardlink is created for the inode, we create the inode context variable, if not present, and add the hardlink to the list. 5) unlink: whenever a unlink happens we delete the hardlink from the list. 6) mknod: same as create. 7) rename: whenever a rename happens we update the hardlink in list. if the hardlink was not present for updation, we add the hardlink to the list. What is pending: 1) This solution will only work for named lookups. 2) We dont track afr-self-heal/dht-rebalancer traffic for healing. Change-Id: Ia4bbaf84128ad6ce8c3ddd70bcfa82894c79585f BUG: 1212037 Signed-off-by: Joseph Fernandes <josferna@redhat.com> Signed-off-by: Dan Lambright <dlambrig@redhat.com> Reviewed-on: http://review.gluster.org/10370 Reviewed-by: Jeff Darcy <jdarcy@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com> Tested-by: NetBSD Build System Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* features/bitrot: Follow xattr naming conventionsVenky Shankar2015-05-061-3/+4
| | | | | | | | | | | | | | | | | Instead of "trusted.glusterfs.bit-rot.*" use "trusted.bit-rot.*" NOTE: With this patch, data on existing volumes would be resigned (which should be OK as of now since we do not expect many users as of now :-)) Change-Id: I926c7bca266a9c8f2cb35d57c4d0359aa5cecfa0 BUG: 1170075 Signed-off-by: Venky Shankar <vshankar@redhat.com> Reviewed-on: http://review.gluster.org/10181 Tested-by: NetBSD Build System Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* geo-rep: rename handling in dht volumeNithya Balachandran2015-05-052-0/+26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Background: Glusterfs changelogs are stored in each brick, which records the changes happened in that brick. Georep will run in all the nodes of master and processes changelogs "independently". Processing changelogs is in brick level, but all the fops will be replayed on "slave mount" point. Problem: With a DHT volume, in changelog "internal fops" are NOT recorded. For Rename case, Rename is recorded in "hashed" brick changelog. (DHT's internal fops like creating linkto file, unlink is NOT recorded). This lead us to inconsistent rename operations. For example, Distribute volume created with Two bricks B1, B2. //Consider master volume mounted @ /mnt/master and following operations executed: cd /mnt/master touch f1 // f1 falls on B1 Hash mv f1 f2 // f2 falls on B2 Hash // Here, Changelogs are recorded as below: @B1 CREATE f1 @B2 RENAME f1 f2 Here, race exists between Brick B1 and B2, say B2 will get executed first. Source file f1 itself is "NOT PRESENT", so it will go ahead and create f2 (Current implementation). We have this problem When rename falls in another brick and file is unlinked in Master. Similar kind of issue exists in following case too(multiple rename): CREATE f1 RENAME f1 f2 RENAME f2 f1 Solution: Instead of carrying out "changelogging" at "HASHED volume", carry out at the "CACHED volume". This way we have rename operations carried out where actual files are present. So,Changelog recorded as : @B1 CREATE f1 RENAME f1 f2 credit: sarumuga@redhat.com PS: Some of the races as the one below are _NOT_ fixed by this patch * f1 and f2 exist. B1 and B2 are their respective cached subvols. For both files hashed-subvol == cached-subvol * mv f1 f2 on master. * B1 has change-log entry of rename f1 f2 * rebalance migrates f2 from B1 and B2 * mv f2 f1 on master. * B2 has change-log entry of rename f2 f1 Since changelog entries (rename f1 f2) and (rename f2 f1) are processed independently by gsyncds, which of either f1 and f2 survives on slave is subject to race. Note that on master its file f1 with name f1 which survived. On slave it can be either file f1 with name f1 or file f2 with name f2 based on who wins the race of processing changelog. Change-Id: Iebc222f582613924c3a7cba37fb6d3e2d8332eda BUG: 1141379 Signed-off-by: Nithya Balachandran <nbalacha@redhat.com> Reviewed-on: http://review.gluster.org/10410 Tested-by: Gluster Build System <jenkins@build.gluster.com> Tested-by: NetBSD Build System Reviewed-by: Raghavendra G <rgowdapp@redhat.com> Tested-by: Raghavendra G <rgowdapp@redhat.com>
* Upcall: Send stat as part of cache_invalidation notificationsSoumya Koduri2015-05-053-18/+39
| | | | | | | | | | | | | | | | Have added support to send attributes of both entries and its parent (include oldparent in case of RENAME fop) in the same notification request to avoid multiple rpc requests. Also, made changes in gfapi to send parent object and its attributes changed in a single upcall event. Change-Id: I92833da3bcec38d65216921c2ce4d10367c32ef1 BUG: 1200262 Signed-off-by: Soumya Koduri <skoduri@redhat.com> Reviewed-on: http://review.gluster.org/10460 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Kaleb KEITHLEY <kkeithle@redhat.com>
* libglusterfs: Fix cluster_entrylk retryPranith Kumar K2015-05-041-3/+3
| | | | | | | | | Change-Id: I92ff46bae36d39a449d4bbaedc88a322992f65eb BUG: 1215265 Signed-off-by: Pranith Kumar K <pkarampu@redhat.com> Reviewed-on: http://review.gluster.org/10391 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Krutika Dhananjay <kdhananj@redhat.com>
* cluster/ec: Fix dictionary compare functionPranith Kumar K2015-05-042-1/+91
| | | | | | | | | | | | | | | | | | | | If both dicts are NULL then equal. If one of the dicts is NULL but the other has only ignorable keys then also they are equal. If both dicts are non-null then check if for each non-ignorable key, values are same or not. value_ignore function is used to skip comparing values for the keys which must be present in both the dictionaries but the value could be different. geo-rep's stime xattr doesn't need to be present in list xattr but when getxattr comes on stime xattr even if there aren't enough responses with the xattr we should still give out an answer which is maximum of the stimes available. Change-Id: I8de2ceaa2db785b797f302f585d88e73b154167d BUG: 1207712 Signed-off-by: Pranith Kumar K <pkarampu@redhat.com> Reviewed-on: http://review.gluster.org/10078 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Xavier Hernandez <xhernandez@datalab.es>
* quota: support for inode quota in quota.confvmallika2015-05-045-1/+232
| | | | | | | | | | | | | | | | | Currently when quota limit is set, corresponding gfid is set in quota.conf. This patch supports storing inode-quota limits in quota.conf and also stores additional byte for each gfid to differentiate between usage quota limit and inode quota limit. Change-Id: I444d7399407594edd280e640681679a784d4c46a BUG: 1202244 Signed-off-by: vmallika <vmallika@redhat.com> Signed-off-by: Sachin Pandit <spandit@redhat.com> Reviewed-on: http://review.gluster.org/10069 Tested-by: NetBSD Build System Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* ctr/libgfdb: Performance enhancer for unlink/create/rename/link fopsJoseph Fernandes2015-05-012-30/+63
| | | | | | | | | | | | | | | | | | | | | | | | 1) ctr_link_consistency option for ctr xaltor is provided so that the user can choose to switch it on or off. /* For link consistency we do a double update i.e mark the link * during the wind and during the unwind we update/delete the link. * This has a performance hit. We give a choice here whether we need * link consistency to be spoton or not using link_consistency flag. * This will have only one link update */ 2) In delete the wind time recording is moved to unwind path. /* Special performance case: * Updating wind time in unwind for delete. This is done here * as in the wind path we will not know whether its the last * link or not. For a last link there is not use to update any * wind or unwind time!*/ Change-Id: I209472fb816f939db4a868b97ba053b028f17ea6 BUG: 1217786 Signed-off-by: Joseph Fernandes <josferna@redhat.com> Reviewed-on: http://review.gluster.org/10170 Reviewed-by: Dan Lambright <dlambrig@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com>
* Upcall: Process each of the upcall events separatelySoumya Koduri2015-04-301-3/+13
| | | | | | | | | | | | | | | | As suggested during the code-review of Bug1200262, have modified GF_CBK_UPCALL to be exlusively GF_CBK_CACHE_INVALIDATION. Thus, for any new upcall event, a new CBK procedure will be added. Also made changes to store upcall data separately based on the upcall event type received. BUG: 1200262 Change-Id: I0f5e53d6f5ece16aecb514a0a426dca40fa1c755 Signed-off-by: Soumya Koduri <skoduri@redhat.com> Reviewed-on: http://review.gluster.org/10049 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Kaleb KEITHLEY <kkeithle@redhat.com>
* rdma: porting rdma to a new message id logging formatHumble Devassy Chirammal2015-04-291-1/+1
| | | | | | | | | | Change-Id: I71e940817ae0a9378e82332d5a8569114fc13482 BUG: 1194640 Signed-off-by: Humble Devassy Chirammal <hchiramm@redhat.com> Reviewed-on: http://review.gluster.org/9868 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Raghavendra G <rgowdapp@redhat.com> Tested-by: Raghavendra G <rgowdapp@redhat.com>
* rebalance: Introducing local crawl and parallel migrationSusant Palai2015-04-292-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The current patch address two part of the design proposed. 1. Rebalance multiple files in parallel 2. Crawl only bricks that belong to the current node Brief design explanation for the above two points. 1. Rebalance multiple files in parallel: ------------------------------------- The existing rebalance engine is single threaded. Hence, introduced multiple threads which will be running parallel to the crawler. The current rebalance migration is converted to a "Producer-Consumer" frame work. Where Producer is : Crawler Consumer is : Migrating Threads Crawler: Crawler is the main thread. The job of the crawler is now limited to fix-layout of each directory and add the files which are eligible for the migration to a global queue in a round robin manner so that we will use all the disk resources efficiently. Hence, the crawler will not be "blocked" by migration process. Producer: Producer will monitor the global queue. If any file is added to this queue, it will dqueue that entry and migrate the file. Currently 20 migration threads are spawned at the beginning of the rebalance process. Hence, multiple file migration happens in parallel. 2. Crawl only bricks that belong to the current node: -------------------------------------------------- As rebalance process is spawned per node, it migrates only the files that belongs to it's own node for the sake of load balancing. But it also reads entries from the whole cluster, which is not necessary as readdir hits other nodes. New Design: As part of the new design the rebalancer decides the subvols that are local to the rebalancer node by checking the node-uuid of root directory prior to the crawler starts. Hence, readdir won't hit the whole cluster as it has already the context of local subvols and also node-uuid request for each file can be avoided. This makes the rebalance process "more scalable". Change-Id: I73ed6ff807adea15086eabbb8d9883e88571ebc1 BUG: 1171954 Signed-off-by: Susant Palai <spalai@redhat.com> Reviewed-on: http://review.gluster.org/9657 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: N Balachandran <nbalacha@redhat.com> Reviewed-by: Shyamsundar Ranganathan <srangana@redhat.com>
* libglusterfs: allocate a segment for quota loggingHumble Devassy Chirammal2015-04-281-1/+6
| | | | | | | | | | Change-Id: Ia71488a20147ec3e99548aea15b4a57bb325fd06 BUG: 1194640 Signed-off-by: Humble Devassy Chirammal <hchiramm@redhat.com> Reviewed-on: http://review.gluster.org/10420 Tested-by: NetBSD Build System Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* libglusterfs: update glfs-messages header for reserved segmentsHumble Devassy Chirammal2015-04-281-4/+32
| | | | | | | | | | | | all the logging patches will be dependent on this segment allocation. Sending this change as a seperate one to avoid the conflicts. Change-Id: Iedd72ab6dc3526f1a6b01828807b5e6b9edcba90 BUG: 1194640 Signed-off-by: Humble Devassy Chirammal <hchiramm@redhat.com> Reviewed-on: http://review.gluster.org/10400 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* libglusterfs: Implementation of sync lock as recursive lock to avoid crash.anand2015-04-282-54/+146
| | | | | | | | | | | | | | | | | | | | | | | Problem : In glusterd,we are using big lock which is implemented based on sync task frame work for thread synchronization and rcu lock for data consistency. sync task frame work swap the threads if there is no worker poll threads available,due to this rcu lock and rcu unlock was happening in different threads (urcu-bp will not allow this),resulting into glusterd crash. fix : To avoid releasing the sync lock(big lock) in between rcu critical section,implemented sync lock as recursive lock. More details: link : http://www.spinics.net/lists/gluster-devel/msg14632.html Change-Id: I2b56c1caf3f0470f219b1adcaf62cce29cdc6b88 BUG: 1211640 Signed-off-by: anand <anekkunt@redhat.com> Reviewed-on: http://review.gluster.org/10285 Reviewed-by: Atin Mukherjee <amukherj@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com> Tested-by: NetBSD Build System Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* arbiter: load arbiter xlator on every 3rd brick of a replica 3 AFR subvolRavishankar N2015-04-271-0/+14
| | | | | | | | | | | | | | | | | | | Logic for adding the 'glusterd_brickinfo->group' member and using it to find the brick positon has been taken from http://review.gluster.org/#/c/9919. Thanks to Jeff Darcy for that. This patch is a part of the arbiter logic implementation for 3 way AFR details of which can be found at http://review.gluster.org/#/c/9656/ Change-Id: Idbfe4f29ee8e098e0102def8f38b32314316b188 BUG: 1199985 Signed-off-by: Ravishankar N <ravishankar@redhat.com> Reviewed-on: http://review.gluster.org/10257 Tested-by: NetBSD Build System Reviewed-by: Atin Mukherjee <amukherj@redhat.com> Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com> Reviewed-by: Krishnan Parthasarathi <kparthas@redhat.com> Tested-by: Krishnan Parthasarathi <kparthas@redhat.com>
* libglusterfs: Fix the return value of inode_ctx_get2()Poornima G2015-04-271-4/+6
| | | | | | | | | | | | | Currently inode_ctx_get2 return success for value2 even if it is not found. This patch fixes the same. Change-Id: I6bf3e6cb280ab3b9b8818bf48dc6e42a349dfa5d BUG: 12002268 Signed-off-by: Poornima G <pgurusid@redhat.com> Reviewed-on: http://review.gluster.org/10412 Tested-by: Gluster Build System <jenkins@build.gluster.com> Tested-by: NetBSD Build System Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* libglusterfs/syncop: Pass xdata even in error caseRaghavendra Talur2015-04-271-2/+2
| | | | | | | | | | | | | xdata should be passed even in error cases. lookup() call was missed in previous patch set. Change-Id: I1ad2c452d05a3b4433b640762aaea5d3a91f2ba5 BUG: 1209869 Signed-off-by: Raghavendra Talur <rtalur@redhat.com> Reviewed-on: http://review.gluster.org/10193 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Krishnan Parthasarathi <kparthas@redhat.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* syncop: Implement syncop_fxattropPranith Kumar K2015-04-262-0/+23
| | | | | | | | | | | Change-Id: Ifc7937ceb451f6e11e40a9513017226fd0f115b0 BUG: 1215265 Signed-off-by: Pranith Kumar K <pkarampu@redhat.com> Reviewed-on: http://review.gluster.org/10382 Tested-by: NetBSD Build System Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Krutika Dhananjay <kdhananj@redhat.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* core: Global timer-wheelVenky Shankar2015-04-264-3/+60
| | | | | | | | | | | | | | | | | | | | | | | | | | | Instantiate a process wide global instance of the timer wheel data structure. Spawning glusterfs* process with option arg "--global-timer-wheel" instantiates a global instance of timer-wheel under global context (->ctx). Translators can make use of this process wide instance [via a call to glusterfs_global_timer_wheel()] instead of maintaining an instance of their own and possibly consuming more memory. Linux kernel too has a single instance of timer wheel where subsystems such as IO, networking, etc.. make use of. Bitrot daemon would be early consumers of this: bitrot translator instances for multiple volumes would track objects belonging to their respective bricks in this global expiry tracking data structure. This is also a first step to move GlusterFS timer mechanism to use timer-wheel. Change-Id: Ie882df607e07acaced846ea269ebf1ece306d6ae BUG: 1170075 Signed-off-by: Venky Shankar <vshankar@redhat.com> Reviewed-on: http://review.gluster.org/10380 Tested-by: NetBSD Build System Reviewed-by: Vijay Bellur <vbellur@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com>
* bitrot/scrub: fix induced throttling in syncop_ftw_throttle()Venky Shankar2015-04-261-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | Failing to reset scanning counter causes "incorrect" delay of around 50 seconds per directory entry. This causes scrubber to run extremely slowly. [ NOTE: This is a temporary fix. With the introduction of token bucket based throttling, inducing throttle via sleep() call would be unneeded. ] Also, fix logging messages in scrubber to log brick and full path of the object which is identified/marked as corrupted. Change-Id: Id501bd15dcdbd8a09613f80f9d84050304740027 BUG: 1170075 Signed-off-by: Venky Shankar <vshankar@redhat.com> Reviewed-on: http://review.gluster.org/10375 Tested-by: NetBSD Build System Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Raghavendra Bhat <raghavendra@redhat.com> Reviewed-by: Gaurav Kumar Garg <ggarg@redhat.com>
* nfs: make it possible to disable nfs.mount-rmtabNiels de Vos2015-04-262-2/+2
| | | | | | | | | | | | | | | | | | | | When there are many NFS-clients doing very often mount/unmount actions, the updating of the 'rmtab' can become a bottleneck and cause delays. In these situations, the output of 'showmount' may be less important than the responsiveness of the (un)mounting. By setting 'nfs.mount-rmtab' to the value "/-", the cache file is not updated anymore, and the entries are only kept in memory. BUG: 1169317 Change-Id: I40c4d8d754932f86fb2b1b2588843390464c773d Reported-by: Cyril Peponnet <cyril@peponnet.fr> Signed-off-by: Niels de Vos <ndevos@redhat.com> Reviewed-on: http://review.gluster.org/9223 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: soumya k <skoduri@redhat.com> Reviewed-by: jiffin tony Thottan <jthottan@redhat.com> Reviewed-by: Kaleb KEITHLEY <kkeithle@redhat.com>
* geo-rep: Don't log geo-rep safe errors in mount logsKotresh HR2015-04-251-0/+4
| | | | | | | | | | | | | | | | | | | | EEXIST and ENOENT are safe errors for geo-replication. Since mkdir is captured in all the bricks of the changelog. mkdir is tried multiple times as per the number of bricks. The first one to process by gsyncd will succeed and all others will get EEXIST. Hence EEXIST is a safe error and can be ignored. Similarly ENOENT also in rm -rf case. And also gsyncd validates these errors and log them in master if it is genuine error. This is coming up with the patch http://review.gluster.org/#/c/10048/ Hence ignoring above said safe errors. Change-Id: I10ae86b11d49c7c3ba2be3110dace6b33daa509e BUG: 1210562 Signed-off-by: Kotresh HR <khiremat@redhat.com> Reviewed-on: http://review.gluster.org/10184 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* libglusterfs: avoid crash due to ctx being NULLHumble Devassy Chirammal2015-04-251-1/+27
| | | | | | | | | Change-Id: Ib667ed42f0b598baddb829b448d6efc3d8e044f1 Signed-off-by: Humble Devassy Chirammal <hchiramm@redhat.com> Reviewed-on: http://review.gluster.org/10155 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Niels de Vos <ndevos@redhat.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* libglusterfs: Implement cluster-syncopPranith Kumar K2015-04-257-422/+2480
| | | | | | | | | | | | | | | | | This patch implements syncop equivalent for cluster of xlators. The xlators on which the fop needs to be performed is taken in input arguments to the functions and the responses are gathered and provided as the output. This idea is taken from afr-v2 self-heal implementation by Avati. Change-Id: I2b568f4340cf921a65054b8ab0df7edc4478b5ca BUG: 1213358 Signed-off-by: Pranith Kumar K <pkarampu@redhat.com> Reviewed-on: http://review.gluster.org/10240 Reviewed-by: Krutika Dhananjay <kdhananj@redhat.com> Tested-by: NetBSD Build System Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* timer: Fix use after free issuePranith Kumar K2015-04-241-1/+5
| | | | | | | | | | | Change-Id: I056c9777b242a11af7f576ad19b2db93dbdf82d4 BUG: 1215117 Signed-off-by: Pranith Kumar K <pkarampu@redhat.com> Reviewed-on: http://review.gluster.org/10367 Reviewed-by: Poornima G <pgurusid@redhat.com> Tested-by: NetBSD Build System Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* core: avoid crashes in gf_msg dup-detection codeJeff Darcy2015-04-211-0/+13
| | | | | | | | | | | | | | | | Use global_xlator for allocations so that we don't try to free objects belonging to an already-deleted translator (which will crash). Change-Id: Ie72a546e7770cf5cb8a8370e22448c8d09e3ab37 BUG: 1212660 Signed-off-by: Jeff Darcy <jdarcy@redhat.com> Reviewed-on: http://review.gluster.org/10319 Reviewed-by: Krishnan Parthasarathi <kparthas@redhat.com> Tested-by: NetBSD Build System Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Krutika Dhananjay <kdhananj@redhat.com> Reviewed-by: Atin Mukherjee <amukherj@redhat.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* quota/disperse: handle inode quotas in xattr aggregatevmallika2015-04-142-7/+25
| | | | | | | | | | | | | | | | | | | | with the inode quota feature, quota size is now increased from 64bit to 192bits which contains values of 'file size', 'file count' and 'dir count' This change in quota size xattr needs to be handled in disperse xattr aggregation Signed-off-by: vmallika <vmallika@redhat.com> Change-Id: I5fd28aa9f5b8b6cba83a98360236417a97ac16ee BUG: 1207967 Reviewed-on: http://review.gluster.org/10112 Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Sachin Pandit <spandit@redhat.com> Reviewed-by: Raghavendra G <rgowdapp@redhat.com> Tested-by: Raghavendra G <rgowdapp@redhat.com>
* glusterd: Replace transaction peers listsKaushal M2015-04-131-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Transaction peer lists were used in GlusterD to peers belonging to a transaction. This was needed to prevent newly added peers performing partial transactions, which could be incorrect. This was accomplished by creating a seperate transaction peers list at the beginning of every transaction. A transaction peers list referenced the peerinfo data structures of the peers which were present at the beginning of the transaction. RCU protection of peerinfos referenced by the transaction peers list is a hard problem and difficult to do correctly. To have proper RCU protection of peerinfos, the transaction peers lists have been replaced by an alternative method to identify peers that belong to a transaction. The alternative method is to the global peers list along with generation numbers to identify peers that should belong to a transaction. This change introduces a global peer list generation number, and a generation number for each peerinfo object. Whenever a peerinfo object is created, the global generation number is bumped, and the peerinfos generation number is set to the bumped global generation. With the above changes, the algorithm to identify peers belonging to a transaction with RCU protection is as follows, - At the beginning of a transaction, the current global generation number is saved - To identify if a peers belonging to the transaction, - Start a RCU read critical section - For each peer in the global peers list, - If the peers generation number is not greater than the saved generation number, continue with the action on the peer - End the RCU read critical section The above algorithm guarantees that, - The peer list is not modified when a transaction is iterating through it - The transaction actions are only done on peers that were present when the transaction started But, as a transaction could iterate over the peers list multiple times, the algorithm cannot guarantee that same set of peers will be selected every time. A peer could get deleted between two iterations of the list within a transaction. This problem existed with transaction peers list as well, but unlike before now it will not lead to invalid memory access and potential crashes. This problem will be addressed seprately. This change was developed on the git branch at [1]. This commit is a combination of the following commits on the development branch. 52ded5b Add timespec_cmp 44aedd8 Add create timestamp to peerinfo 7bcbea5 Fix some silly mistakes 13e3241 Add start time to opinfo 17a6727 Use timestamp comparisions to identify xaction peers instead of a xaction peer list 3be05b6 Correct check for peerinfo age 70d5b58 Use read-critical sections for peer list iteration ba4dbca Use peerinfo timestamp checks in op-sm instead of xaction peer list d63f811 Add more peer status checks when iterating peers list in glusterd-syncop 1998a2a Timestamp based peer list traversal of mgmtv3 xactions f3c1a42 Remove transaction peer lists b8b08ee Remove unused labels 32e5f5b Remove 'npeers' usage a075fb7 Remove 'npeers' from mgmt-v3 framework 12c9df2 Use generation number instead of timestamps. 9723021 Remove timespec_cmp 80ae2c6 Remove timespec.h include a9479b0 Address review comments on 10147/4 [1]: https://github.com/kshlm/glusterfs/tree/urcu Change-Id: I9be1033525c0a89276f5b5d83dc2eb061918b97f BUG: 1205186 Signed-off-by: Kaushal M <kaushal@redhat.com> Reviewed-on: http://review.gluster.org/10147 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Atin Mukherjee <amukherj@redhat.com> Reviewed-by: Anand Nekkunti <anekkunt@redhat.com> Reviewed-by: Krishnan Parthasarathi <kparthas@redhat.com> Tested-by: Krishnan Parthasarathi <kparthas@redhat.com>
* build: make contrib/uuid dependency optionalNiels de Vos2015-04-108-37/+110
| | | | | | | | | | | | | | | | | | | On Linux systems we should use the libuuid from the distribution and not bundle and statically link the contrib/uuid/ bits. libglusterfs/src/compat-uuid.h has been introduced and should become an abstraction layer for different UUID APIs. Non-Linux operating systems should implement their compatibility layer there. Once all operating systems have an implementation in compat-uuid.h, we can remove contrib/uuid/ from the repository completely. Change-Id: I345e5357644be2521685e00358bb8c83c4ea0577 BUG: 1206587 Signed-off-by: Niels de Vos <ndevos@redhat.com> Reviewed-on: http://review.gluster.org/10129 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* quota/cli: validate quota hard-limit optionvmallika2015-04-102-16/+53
| | | | | | | | | | | | | | | | | | | Quota hard-limit is supported only upto: 9223372036854775807 (int 64) In CLI, it is allowed to set the value upto 16384PB (unsigned int 64), this is not a valid value as the xattrop for quota accounting and the quota enforcer operates on a signed int64 limit value. This patches fixes the problem in CLI and allows user to set the hard-limit value only from range 0 - 9223372036854775807 Change-Id: Ifce6e509e1832ef21d3278bacfa5bd71040c8cba BUG: 1206432 Signed-off-by: vmallika <vmallika@redhat.com> Reviewed-on: http://review.gluster.org/10022 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Kaushal M <kaushal@redhat.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* libglusterfs: avoid possibility of crash when ctx is nullHumble Devassy Chirammal2015-04-081-0/+3
| | | | | | | | | | | | | | ctx is passed to gf_log_inject_timer_event() and pass through to __gf_log_inject_timer_event() where the struct members are getting dereferenced, and can cause crash if the passed ctx is null. This patch avoids the issue. Change-Id: I153dbb5d3744898429139e3d40bb4f0e9093632a BUG: 1208118 Signed-off-by: Humble Devassy Chirammal <hchiramm@redhat.com> Reviewed-on: http://review.gluster.org/10102 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Niels de Vos <ndevos@redhat.com>
* libglusterfs/syncop: Add xdata to all syncop callsRaghavendra Talur2015-04-083-169/+509
| | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds support for xdata in both the request and response path of syncops. Few calls like lookup already had the support; have renamed variables in few places to maintain uniformity. xdata passed downwards is known as xdata_in and xdata passed upwards is known as xdata_out. There is an old patch by Jeff Darcy at http://review.gluster.org/#/c/8769/3 which does the same for some selected calls. It also brings in xdata support at gfapi level. xdata support at gfapi level would be introduced in subsequent patches. Change-Id: I340e94ebaf2a38e160e65bc30732e8fe1c532dcc BUG: 1158621 Signed-off-by: Raghavendra Talur <rtalur@redhat.com> Reviewed-on: http://review.gluster.org/9859 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* nfs : introducing logging framework for nfs translatorManikandan Selvaganesh2015-04-081-0/+4
| | | | | | | | | | Change-Id: I3a47cdd06595c87da8e822d11683d68b43c11cda BUG: 1194640 Signed-off-by: Manikandan Selvaganesh <mselvaga@redhat.com> Reviewed-on: http://review.gluster.org/9945 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: jiffin tony Thottan <jthottan@redhat.com> Reviewed-by: Niels de Vos <ndevos@redhat.com>
* ctr : Fix for heating of files during promotion/demotionJoseph Fernandes2015-04-084-19/+31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This fix will solve the heating of the files during the promotion or demotion. Promotion: ~~~~~~~~~ When a file gets promoted it get the current time stamp during creation only, but following writes or reads during the migration wont heat the file. Demotion: ~~~~~~~~ When a file gets demoted it get the wind/unwind time stamp is set to zero. The following writes or reads during the migration wont heat the file. What is remaining ? ~~~~~~~~~~~~~~~~~ Bug 1209129 ( https://bugzilla.redhat.com/show_bug.cgi?id=1209129 ) Inspite of this fix there is still a issue remaining, i.e the heat of the file is not keep intact during a internal rebalance activity i.e a rebalance within a tier. Change-Id: I01e82dc226355599732d40e699062cee7960b0a5 BUG: 1207867 Signed-off-by: Joseph Fernandes <josferna@redhat.com> Signed-off-by: Dan Lambright <dlambrig@redhat.com> Signed-off-by: Joseph Fernandes <josferna@redhat.com> Reviewed-on: http://review.gluster.org/10080 Reviewed-by: Shyamsundar Ranganathan <srangana@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com>
* bitrot/scrub: Scrubber fixesVenky Shankar2015-04-081-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes a handful of problem with scrubber which are detailed below. Scrubber used to skip objects for verification due to missing fd iterface to fetch versioning extended attributes. Similar to the inode interface, an fd based interface in POSIX is now introduced. Moreover, this patch also fixes potential false reporting by scrubber due to: An object gets dirtied and signed when scrubber is busy calculatingobject checksum. This is fixed by caching the signed version when an object is first inspected for stalenes, i.e., during pre-compute stage. This version is used to verify checksum in the post-compute stage when the signatures are compared for possible corruption. Side effect of _not_ sending signature length during signing resulted in "truncated" signature to be set for an object. Now, at the time of signing, the signature length is sent and is used in place of invoking strlen() to get signature length (which could have possible 00s). The signature length itself is not persisted in the signature xattr, but is calculated on-the-fly by substracting the xattr length by the "structure" header size. Some of the log entries are made more meaningful (as and aid for debugging). Change-Id: I938bee5aea6688d5d99eb2640053613af86d6269 BUG: 1207624 Signed-off-by: Venky Shankar <vshankar@redhat.com> Reviewed-on: http://review.gluster.org/10118 Reviewed-by: Raghavendra Bhat <raghavendra@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* cluster/dht: fix tier.c problems found prior to feature freezeDan Lambright2015-04-062-1/+53
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch resolves tiering translator issues taken from the list in bug 1203776. These issues have been selected to be fixed first. The rest will be fixed in a subsequent patch (or are not a problem). 3. Replace hardcoded #defines of promote/demote file names 6. Use loc_wipe() in migrate_using_query_file() 9. Only promote/demote files on the same node on which they reside. 14. Replace calloc with GF_CALLOC in tier.c and ensure freeing done properly. 15. Handle if parse_query_str fails 22. Only load gfdb library on server side, remove SQL references from client. Change-Id: I6563b11e58ab2e4c6b1ce44db755781ad6d930fb BUG: 1203776 Signed-off-by: Dan Lambright <dlambrig@redhat.com> Reviewed-on: http://review.gluster.org/9987 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: N Balachandran <nbalacha@redhat.com> Reviewed-by: Niels de Vos <ndevos@redhat.com>
* Avoid conflict between contrib/uuid and system uuidEmmanuel Dreyfus2015-04-047-34/+34
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | glusterfs relies on Linux uuid implementation, which API is incompatible with most other systems's uuid. As a result, libglusterfs has to embed contrib/uuid, which is the Linux implementation, on non Linux systems. This implementation is incompatible with systtem's built in, but the symbols have the same names. Usually this is not a problem because when we link with -lglusterfs, libc's symbols are trumped. However there is a problem when a program not linked with -lglusterfs will dlopen() glusterfs component. In such a case, libc's uuid implementation is already loaded in the calling program, and it will be used instead of libglusterfs's implementation, causing crashes. A possible workaround is to use pre-load libglusterfs in the calling program (using LD_PRELOAD on NetBSD for instance), but such a mechanism is not portable, nor is it flexible. A much better approach is to rename libglusterfs's uuid_* functions to gf_uuid_* to avoid any possible conflict. This is what this change attempts. BUG: 1206587 Change-Id: I9ccd3e13afed1c7fc18508e92c7beb0f5d49f31a Signed-off-by: Emmanuel Dreyfus <manu@netbsd.org> Reviewed-on: http://review.gluster.org/10017 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Niels de Vos <ndevos@redhat.com>
* iobuf: Do not call __iobuf_ref directlyRaghavendra Talur2015-04-021-2/+2
| | | | | | | | | | | | | | | | | | iobuf_get will be creating the iobuf and hence lock is not necessary to increment ref. However, it is a good practice to call iobuf_ref instead of __iobuf_ref so that we have a single point to get refs and this can be used later to do mem accounting etc. Change-Id: I1fd328c3c463c23fd5f6df505ccb5c86f6207f28 BUG: 1199075 Signed-off-by: Raghavendra Talur <rtalur@redhat.com> Reviewed-on: http://review.gluster.org/9812 Reviewed-by: Niels de Vos <ndevos@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com>
* libgfdb: fix possible illegal memory access (CID 1288820)Michael Adam2015-04-021-1/+2
| | | | | | | | | | | | | | | | | | Coverity CID 1288820 strncpy executed with a limit equal to the target array size potentially leaves the target string not null terminated. Make sure the copied string is a valid 0 terminated string. Change-Id: I39ff6a64ca5b9e30562226dd34c5b06267b75b87 BUG: 789278 Signed-off-by: Michael Adam <obnox@samba.org> Reviewed-on: http://review.gluster.org/10063 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Poornima G <pgurusid@redhat.com> Reviewed-by: Kaleb KEITHLEY <kkeithle@redhat.com> Reviewed-by: Joseph Fernandes <josferna@redhat.com> Tested-by: Joseph Fernandes <josferna@redhat.com>
* function gf_string2bytesize_range should handle 'xB' byte valuesvmallika2015-03-312-1/+2
| | | | | | | | | | | Change-Id: I208289aae2423e4bb015cf33bafd2a961e1c3fc6 BUG: 1197593 Signed-off-by: vmallika <vmallika@redhat.com> Reviewed-on: http://review.gluster.org/9779 Reviewed-by: Atin Mukherjee <amukherj@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Sachin Pandit <spandit@redhat.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* libglusterfs : dead code fix.Manikandan Selvaganesh2015-03-311-1/+0
| | | | | | | | | | | | | CID : 1124884 Change-Id: I3332e844a01c1432f1d80a6acda7a87e8b01801c BUG: 789278 Signed-off-by: Manikandan Selvaganesh <mselvaga@redhat.com> Reviewed-on: http://review.gluster.org/9677 Reviewed-by: Humble Devassy Chirammal <humble.devassy@gmail.com> Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Kaleb KEITHLEY <kkeithle@redhat.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* cluster/ec: Implement heal info for ecPranith Kumar K2015-03-301-1/+1
| | | | | | | | | | | | This also lists the files that are on-going I/O, which will be fixed later. Change-Id: Ib3f60a8b7e8798d068658cf38eaef2a904f9e327 BUG: 1203581 Signed-off-by: Pranith Kumar K <pkarampu@redhat.com> Reviewed-on: http://review.gluster.org/10020 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Dan Lambright <dlambrig@redhat.com>
* Gfdb Query Fix and Volume option fixJoseph Fernandes2015-03-301-2/+2
| | | | | | | | | | | | | | 1) Query fix in find_changed_with_freq() 2) Volume option typo fix for write_freq_threshold and read_freq_threshold Change-Id: I38e154818178aab412b2d7b2914cd29acef66ffb BUG: 1207343 Signed-off-by: Joseph Fernandes <josferna@redhat.com> Reviewed-on: http://review.gluster.org/10050 Reviewed-by: Dan Lambright <dlambrig@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Niels de Vos <ndevos@redhat.com>
* core : free up mem_acct.rec in xlator_destroyAtin Mukherjee2015-03-301-0/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | Problem: We've observed that glusterd was OOM killed after some minutes when volume set command was run in a loop. Analysis: Initially the suspection was in glusterd code, but a deep dive into the codebase revealed that while validating all the options as part of graph reconfiguration at the time of freeing up the xlator object its one of the member mem_acct is left over which causes memory leak. Solution: Free up xlator's mem_acct.rec in xlator_destroy () Change-Id: Ie9e7267e1ac4ab7b8af6e4d7c6660dfe99b4d641 BUG: 1201203 Signed-off-by: Atin Mukherjee <amukherj@redhat.com> Reviewed-on: http://review.gluster.org/9862 Reviewed-by: Niels de Vos <ndevos@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Krishnan Parthasarathi <kparthas@redhat.com> Reviewed-by: Raghavendra Bhat <raghavendra@redhat.com> Reviewed-by: Kaleb KEITHLEY <kkeithle@redhat.com>
* mem-pool: invalidate memory on GF_FREE to aid debuggingNiels de Vos2015-03-302-54/+103
| | | | | | | | | | | | | | | | | | | | | | | | Debugging where memory gets free'd with help from overwriting the memory before it is free'd with some structures (repeatedly). The struct mem_invalid starts with a magic value (0xdeadc0de), followed by a pointer to the xlator, the mem-type. the size of the GF_?ALLOC() requested area and the baseaddr pointer to what GF_?ALLOC() returned. With these details, and the 'struct mem_header' that is placed when calling GF_?ALLOC(), it is possible to identify overruns and possible use-after-free. A memory dump (core) or running with a debugger is needed to read the surrounding memory of corrupt structures. This additional memory invalidation/poisoning needs to be enabled by passing --enable-debug to ./configure. Change-Id: I9f5f37dc4b5b59142adefc90897d32e89be67b82 Signed-off-by: Niels de Vos <ndevos@redhat.com> Reviewed-on: http://review.gluster.org/10019 Reviewed-by: Venky Shankar <vshankar@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Emmanuel Dreyfus <manu@netbsd.org> Reviewed-by: Kaleb KEITHLEY <kkeithle@redhat.com>
* libgfapi: revamp glfs_new functionHumble Devassy Chirammal2015-03-301-5/+7
| | | | | | | | | | | | | | | | | Current glfs_new() function is not flexible enough to error out and destroy the struct members or objects initialized just before the error path/condition. This make the structs or objects to continue or left out with partially recorded data in fs and ctx structs and cause crashes/issues later in the code path. This patch avoid the issue. Change-Id: Ie4514b82b24723a46681cc7832a08870afc0cb28 BUG: 1202492 Signed-off-by: Humble Devassy Chirammal <hchiramm@redhat.com> Reviewed-on: http://review.gluster.org/9903 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Poornima G <pgurusid@redhat.com> Reviewed-by: soumya k <skoduri@redhat.com> Reviewed-by: Kaleb KEITHLEY <kkeithle@redhat.com>
* glusterd: Maintain local xaction_peer list for op-smAtin Mukherjee2015-03-261-0/+1
| | | | | | | | | | | | | | | http://review.gluster.org/9269 addresses maintaining local xaction_peers in syncop and mgmt_v3 framework. This patch is to maintain local xaction_peers list for op-sm framework as well. Change-Id: Idd8484463fed196b3b18c2df7f550a3302c6e138 BUG: 1204727 Signed-off-by: Atin Mukherjee <amukherj@redhat.com> Reviewed-on: http://review.gluster.org/9972 Reviewed-by: Anand Nekkunti <anekkunt@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Krishnan Parthasarathi <kparthas@redhat.com> Tested-by: Krishnan Parthasarathi <kparthas@redhat.com>
* features/bit-rot: filesystem scrubberVenky Shankar2015-03-241-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Scrubber performs signature verification for objects that were signed by signer. This is done by recalculating the signature (using the hash algorithm the object was signed with) and verifying it aginst the objects persisted signature. Since the object could be undergoing IO opretaion at the time of hash calculation, the signature may not match objects persisted signature. Bitrot stub provides additional information about the stalesness of an objects signature (determinted by it's versioning mechanism). This additional bit of information is used by scrubber to determine the staleness of the signature, and in such cases the object is skipped verification (although signature staleness is performed twice: once before initiation of hash calculation and another after it (an object could be modified after staleness checks). The implmentation is a part of the bitrot xlator (signer) which acts as a signer or scrubber based on a translator option. As of now the scrub process is ever running (but has some form of weak throttling mechanism during filesystem scan). Going forward, there needs to be some form of scrub scheduling and IO throttling (during hash calculation) tunables (via CLI). Change-Id: I665ce90208f6074b98c5a1dd841ce776627cc6f9 BUG: 1170075 Original-Author: Raghavendra Bhat <rabhat@redhat.com> Original-Author: Venky Shankar <vshankar@redhat.com> Signed-off-by: Venky Shankar <vshankar@redhat.com> Reviewed-on: http://review.gluster.org/9914 Tested-by: Vijay Bellur <vbellur@redhat.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
generated by cgit (git 2.34.1) at 2024-11-15 11:19:38 +0000