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Thanks for the swift turn around. Will try this out and let you know. Thanks and Regards, Ram From: Pranith Kumar Karampuri [mailto:pkarampu at redhat.com] Sent: Monday, July 10, 2017 8:31 AM To: Sanoj Unnikrishnan Cc: Ankireddypalle Reddy; Gluster Devel (gluster-devel at gluster.org); gluster-users at gluster.org Subject: Re: [Gluster-devel] gfid and volume-id extended attributes lost Ram,

On Fri, Jul 7, 2017 at 9:20 PM, Ankireddypalle Reddy <areddy at commvault.com> wrote: > Pranith, > > Thanks for looking in to the issue. The bricks were > mounted after the reboot. One more thing that I noticed was when the > attributes were manually set when glusterd was up then on starting the > volume the attributes were again lost. Had to stop glusterd

3.7.19 Thanks and Regards, Ram From: Pranith Kumar Karampuri [mailto:pkarampu at redhat.com] Sent: Friday, July 07, 2017 11:54 AM To: Ankireddypalle Reddy Cc: Gluster Devel (gluster-devel at gluster.org); gluster-users at gluster.org Subject: Re: [Gluster-devel] gfid and volume-id extended attributes lost On Fri, Jul 7, 2017 at 9:20 PM, Ankireddypalle Reddy <areddy at

Ram, I sent https://review.gluster.org/17765 to fix the possibility in bulk removexattr. But I am not sure if this is indeed the reason for this issue. On Mon, Jul 10, 2017 at 6:30 PM, Ankireddypalle Reddy <areddy at commvault.com> wrote: > Thanks for the swift turn around. Will try this out and let you know. > > > > Thanks and Regards, > > Ram > > *From:*

On Fri, Jul 7, 2017 at 9:25 PM, Ankireddypalle Reddy <areddy at commvault.com> wrote: > 3.7.19 > These are the only callers for removexattr and only _posix_remove_xattr has the potential to do removexattr as posix_removexattr already makes sure that it is not gfid/volume-id. And surprise surprise _posix_remove_xattr happens only from healing code of afr/ec. And this can only happen

We lost the attributes on all the bricks on servers glusterfs2 and glusterfs3 again. [root at glusterfs2 Log_Files]# gluster volume info Volume Name: StoragePool Type: Distributed-Disperse Volume ID: 149e976f-4e21-451c-bf0f-f5691208531f Status: Started Number of Bricks: 20 x (2 + 1) = 60 Transport-type: tcp Bricks: Brick1: glusterfs1sds:/ws/disk1/ws_brick Brick2: glusterfs2sds:/ws/disk1/ws_brick

Ram, If you see it again, you can use this. I am going to send out a patch for the code path which can lead to removal of gfid/volume-id tomorrow. On Mon, Jul 10, 2017 at 5:19 PM, Sanoj Unnikrishnan <sunnikri at redhat.com> wrote: > Please use the systemtap script(https://paste.fedoraproject.org/paste/ > EGDa0ErwX0LV3y-gBYpfNA) to check which process is invoking remove xattr

Please use the systemtap script( https://paste.fedoraproject.org/paste/EGDa0ErwX0LV3y-gBYpfNA) to check which process is invoking remove xattr calls. It prints the pid, tid and arguments of all removexattr calls. I have checked for these fops at the protocol/client and posix translators. To run the script .. 1) install systemtap and dependencies. 2) install glusterfs-debuginfo 3) change the path

Did anything special happen on these two bricks? It can't happen in the I/O path: posix_removexattr() has: 0 if (!strcmp (GFID_XATTR_KEY, name)) { 1 gf_msg (this->name, GF_LOG_WARNING, 0, P_MSG_XATTR_NOT_REMOVED, 2 "Remove xattr called on gfid for file %s", real_path); 3 op_ret = -1; 4 goto

Pranith, Thanks for looking in to the issue. The bricks were mounted after the reboot. One more thing that I noticed was when the attributes were manually set when glusterd was up then on starting the volume the attributes were again lost. Had to stop glusterd set attributes and then start glusterd. After that the volume start succeeded. Thanks and Regards, Ram From: Pranith

Ram, As per the code, self-heal was the only candidate which *can* do it. Could you check logs of self-heal daemon and the mount to check if there are any metadata heals on root? +Sanoj Sanoj, Is there any systemtap script we can use to detect which process is removing these xattrs? On Sat, Jul 8, 2017 at 2:58 AM, Ankireddypalle Reddy <areddy at commvault.com> wrote: >

@ pranith , yes . we can get the pid on all removexattr call and also print the backtrace of the glusterfsd process when trigerring removing xattr. I will write the script and reply back. On Sat, Jul 8, 2017 at 7:06 AM, Pranith Kumar Karampuri <pkarampu at redhat.com > wrote: > Ram, > As per the code, self-heal was the only candidate which *can* do > it. Could you check

Hi, We faced an issue in the production today. We had to stop the volume and reboot all the servers in the cluster. Once the servers rebooted starting of the volume failed because the following extended attributes were not present on all the bricks on 2 servers. 1) trusted.gfid 2) trusted.glusterfs.volume-id We had to manually set these extended attributes to start the volume.