similar to: Bricks to sub-volume mapping

But do we store this information somewhere as part of gluster metadata or something... Thanks and Regards, --Anand Extn : 6974 Mobile : 91 9552527199, 91 9850160173 From: Aravinda [mailto:avishwan at redhat.com] Sent: 09 January 2018 12:31 To: Anand Malagi <amalagi at commvault.com>; gluster-users at gluster.org Subject: Re: [Gluster-users] Bricks to sub-volume mapping First 6 bricks

First 6 bricks belong to First sub volume and next 6 bricks belong to second. On Tuesday 09 January 2018 12:11 PM, Anand Malagi wrote: > > Hi Team, > > Please let me know how I can know which bricks are part of which > sub-volumes in case of disperse volume, for example in below volume > has two sub-volumes : > > Type: Distributed-Disperse > > Volume ID:

No, we don't store the information separately. But it can be easily predictable from the Volume Info. For example, in the below Volume info, it shows "Number of Bricks" in the following format, ??? Number of Subvols x (Number of Data bricks + Number of Redundancy bricks) = Total Bricks Note: Sub volumes are predictable without storing it as separate info since we do not have

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, 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: >

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

@ 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

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,

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

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

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