Raghavendra Gowdappa
2018-Aug-09 13:59 UTC
[Gluster-users] blocking process on FUSE mount in directory which is using quota
On Thu, Aug 9, 2018 at 6:47 PM, mabi <mabi at protonmail.ch> wrote:> Hi Nithya, > > Thanks for the fast answer. Here the additional info: > > 1. gluster volume info > > Volume Name: myvol-private > Type: Replicate > Volume ID: e7a40a1b-45c9-4d3c-bb19-0c59b4eceec5 > Status: Started > Snapshot Count: 0 > Number of Bricks: 1 x (2 + 1) = 3 > Transport-type: tcp > Bricks: > Brick1: gfs1a:/data/myvol-private/brick > Brick2: gfs1b:/data/myvol-private/brick > Brick3: gfs1c:/srv/glusterfs/myvol-private/brick (arbiter) > Options Reconfigured: > features.default-soft-limit: 95% > transport.address-family: inet > features.quota-deem-statfs: on > features.inode-quota: on > features.quota: on > nfs.disable: on > performance.readdir-ahead: on > client.event-threads: 4 > server.event-threads: 4 > auth.allow: 192.168.100.92 > > > > 2. Sorry I have no clue how to take a "statedump" of a process on Linux. > Which command should I use for that? and which process would you like, the > blocked process (for example "ls")? >Statedumps are gluster specific. Please refer to https://docs.gluster.org/en/v3/Troubleshooting/statedump/ for instructions.> Regards, > M. > > ??????? Original Message ??????? > On August 9, 2018 3:10 PM, Nithya Balachandran <nbalacha at redhat.com> > wrote: > > Hi, > > Please provide the following: > > 1. gluster volume info > 2. statedump of the fuse process when it hangs > > > Thanks, > Nithya > > On 9 August 2018 at 18:24, mabi <mabi at protonmail.ch> wrote: > >> Hello, >> >> I recently upgraded my GlusterFS replica 2+1 (aribter) to version 3.12.12 >> and now I see a weird behaviour on my client (using FUSE mount) where I >> have processes (PHP 5.6 FPM) trying to access a specific directory and then >> the process blocks. I can't kill the process either, not even with kill -9. >> I need to reboot the machine in order to get rid of these blocked processes. >> >> This directory has one particularity compared to the other directories it >> is that it has reached it's quota soft-limit as you can see here in the >> output of gluster volume quota list: >> >> Path Hard-limit Soft-limit >> Used Available Soft-limit exceeded? Hard-limit exceeded? >> ------------------------------------------------------------ >> ------------------------------------------------------------------- >> /directory 100.0GB 80%(80.0GB) 90.5GB >> 9.5GB Yes No >> >> That does not mean that it is the quota's fault but it might be a hint >> where to start looking for... And by the way can someone explain me what >> the soft-limit does? or does it not do anything special? >> >> Here is an the linux stack of a blocking process on that directory which >> happened with a simple "ls -la": >> >> [Thu Aug 9 14:21:07 2018] INFO: task ls:2272 blocked for more than 120 >> seconds. >> [Thu Aug 9 14:21:07 2018] Not tainted 3.16.0-4-amd64 #1 >> [Thu Aug 9 14:21:07 2018] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" >> disables this message. >> [Thu Aug 9 14:21:07 2018] ls D ffff88017ef93200 0 >> 2272 2268 0x00000004 >> [Thu Aug 9 14:21:07 2018] ffff88017653f490 0000000000000286 >> 0000000000013200 ffff880174d7bfd8 >> [Thu Aug 9 14:21:07 2018] 0000000000013200 ffff88017653f490 >> ffff8800eeb3d5f0 ffff8800fefac800 >> [Thu Aug 9 14:21:07 2018] ffff880174d7bbe0 ffff8800eeb3d6d0 >> ffff8800fefac800 ffff8800ffe1e1c0 >> [Thu Aug 9 14:21:07 2018] Call Trace: >> [Thu Aug 9 14:21:07 2018] [<ffffffffa00dc50d>] ? >> __fuse_request_send+0xbd/0x270 [fuse] >> [Thu Aug 9 14:21:07 2018] [<ffffffff810abce0>] ? >> prepare_to_wait_event+0xf0/0xf0 >> [Thu Aug 9 14:21:07 2018] [<ffffffffa00e0791>] ? >> fuse_dentry_revalidate+0x181/0x300 [fuse] >> [Thu Aug 9 14:21:07 2018] [<ffffffff811b944e>] ? lookup_fast+0x25e/0x2b0 >> [Thu Aug 9 14:21:07 2018] [<ffffffff811bacc5>] ? >> path_lookupat+0x155/0x780 >> [Thu Aug 9 14:21:07 2018] [<ffffffff81195715>] ? >> kmem_cache_alloc+0x75/0x480 >> [Thu Aug 9 14:21:07 2018] [<ffffffffa00dfca9>] ? >> fuse_getxattr+0xe9/0x150 [fuse] >> [Thu Aug 9 14:21:07 2018] [<ffffffff811bb316>] ? >> filename_lookup+0x26/0xc0 >> [Thu Aug 9 14:21:07 2018] [<ffffffff811bf594>] ? >> user_path_at_empty+0x54/0x90 >> [Thu Aug 9 14:21:07 2018] [<ffffffff81193e08>] ? >> kmem_cache_free+0xd8/0x210 >> [Thu Aug 9 14:21:07 2018] [<ffffffff811bf59f>] ? >> user_path_at_empty+0x5f/0x90 >> [Thu Aug 9 14:21:07 2018] [<ffffffff811b3d46>] ? vfs_fstatat+0x46/0x90 >> [Thu Aug 9 14:21:07 2018] [<ffffffff811b421d>] ? SYSC_newlstat+0x1d/0x40 >> [Thu Aug 9 14:21:07 2018] [<ffffffff811d34b8>] ? SyS_lgetxattr+0x58/0x80 >> [Thu Aug 9 14:21:07 2018] [<ffffffff81525d0d>] ? >> system_call_fast_compare_end+0x10/0x15 >> >> >> My 3 gluster nodes are all Debian 9 and my client Debian 8. >> >> Let me know if you need more information. >> >> Best regards, >> Mabi >> _______________________________________________ >> Gluster-users mailing list >> Gluster-users at gluster.org >> https://lists.gluster.org/mailman/listinfo/gluster-users >> > > > _______________________________________________ > Gluster-users mailing list > Gluster-users at gluster.org > https://lists.gluster.org/mailman/listinfo/gluster-users >-------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.gluster.org/pipermail/gluster-users/attachments/20180809/431dfc86/attachment.html>
mabi
2018-Aug-09 14:24 UTC
[Gluster-users] blocking process on FUSE mount in directory which is using quota
Thanks for the documentation. On my client using FUSE mount I found the PID by using ps (output below): root 456 1 4 14:17 ? 00:05:15 /usr/sbin/glusterfs --volfile-server=gfs1a --volfile-id=myvol-private /mnt/myvol-private Then I ran the following command sudo kill -USR1 456 but now I can't find where the files are stored. Are these supposed to be stored on the client directly? I checked /var/run/gluster and /var/log/gluster but could not see anything and /var/log/gluster does not even exist on the client. ??????? Original Message ??????? On August 9, 2018 3:59 PM, Raghavendra Gowdappa <rgowdapp at redhat.com> wrote:> On Thu, Aug 9, 2018 at 6:47 PM, mabi <mabi at protonmail.ch> wrote: > >> Hi Nithya, >> >> Thanks for the fast answer. Here the additional info: >> >> 1. gluster volume info >> >> Volume Name: myvol-private >> Type: Replicate >> Volume ID: e7a40a1b-45c9-4d3c-bb19-0c59b4eceec5 >> Status: Started >> Snapshot Count: 0 >> Number of Bricks: 1 x (2 + 1) = 3 >> Transport-type: tcp >> Bricks: >> Brick1: gfs1a:/data/myvol-private/brick >> Brick2: gfs1b:/data/myvol-private/brick >> Brick3: gfs1c:/srv/glusterfs/myvol-private/brick (arbiter) >> Options Reconfigured: >> features.default-soft-limit: 95% >> transport.address-family: inet >> features.quota-deem-statfs: on >> features.inode-quota: on >> features.quota: on >> nfs.disable: on >> performance.readdir-ahead: on >> client.event-threads: 4 >> server.event-threads: 4 >> auth.allow: 192.168.100.92 >> >> 2. Sorry I have no clue how to take a "statedump" of a process on Linux. Which command should I use for that? and which process would you like, the blocked process (for example "ls")? > > Statedumps are gluster specific. Please refer to https://docs.gluster.org/en/v3/Troubleshooting/statedump/ for instructions. > >> Regards, >> M. >> >> ??????? Original Message ??????? >> On August 9, 2018 3:10 PM, Nithya Balachandran <nbalacha at redhat.com> wrote: >> >>> Hi, >>> >>> Please provide the following: >>> >>> - gluster volume info >>> - statedump of the fuse process when it hangs >>> >>> Thanks, >>> Nithya >>> >>> On 9 August 2018 at 18:24, mabi <mabi at protonmail.ch> wrote: >>> >>>> Hello, >>>> >>>> I recently upgraded my GlusterFS replica 2+1 (aribter) to version 3.12.12 and now I see a weird behaviour on my client (using FUSE mount) where I have processes (PHP 5.6 FPM) trying to access a specific directory and then the process blocks. I can't kill the process either, not even with kill -9. I need to reboot the machine in order to get rid of these blocked processes. >>>> >>>> This directory has one particularity compared to the other directories it is that it has reached it's quota soft-limit as you can see here in the output of gluster volume quota list: >>>> >>>> Path Hard-limit Soft-limit Used Available Soft-limit exceeded? Hard-limit exceeded? >>>> ------------------------------------------------------------------------------------------------------------------------------- >>>> /directory 100.0GB 80%(80.0GB) 90.5GB 9.5GB Yes No >>>> >>>> That does not mean that it is the quota's fault but it might be a hint where to start looking for... And by the way can someone explain me what the soft-limit does? or does it not do anything special? >>>> >>>> Here is an the linux stack of a blocking process on that directory which happened with a simple "ls -la": >>>> >>>> [Thu Aug 9 14:21:07 2018] INFO: task ls:2272 blocked for more than 120 seconds. >>>> [Thu Aug 9 14:21:07 2018] Not tainted 3.16.0-4-amd64 #1 >>>> [Thu Aug 9 14:21:07 2018] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. >>>> [Thu Aug 9 14:21:07 2018] ls D ffff88017ef93200 0 2272 2268 0x00000004 >>>> [Thu Aug 9 14:21:07 2018] ffff88017653f490 0000000000000286 0000000000013200 ffff880174d7bfd8 >>>> [Thu Aug 9 14:21:07 2018] 0000000000013200 ffff88017653f490 ffff8800eeb3d5f0 ffff8800fefac800 >>>> [Thu Aug 9 14:21:07 2018] ffff880174d7bbe0 ffff8800eeb3d6d0 ffff8800fefac800 ffff8800ffe1e1c0 >>>> [Thu Aug 9 14:21:07 2018] Call Trace: >>>> [Thu Aug 9 14:21:07 2018] [<ffffffffa00dc50d>] ? __fuse_request_send+0xbd/0x270 [fuse] >>>> [Thu Aug 9 14:21:07 2018] [<ffffffff810abce0>] ? prepare_to_wait_event+0xf0/0xf0 >>>> [Thu Aug 9 14:21:07 2018] [<ffffffffa00e0791>] ? fuse_dentry_revalidate+0x181/0x300 [fuse] >>>> [Thu Aug 9 14:21:07 2018] [<ffffffff811b944e>] ? lookup_fast+0x25e/0x2b0 >>>> [Thu Aug 9 14:21:07 2018] [<ffffffff811bacc5>] ? path_lookupat+0x155/0x780 >>>> [Thu Aug 9 14:21:07 2018] [<ffffffff81195715>] ? kmem_cache_alloc+0x75/0x480 >>>> [Thu Aug 9 14:21:07 2018] [<ffffffffa00dfca9>] ? fuse_getxattr+0xe9/0x150 [fuse] >>>> [Thu Aug 9 14:21:07 2018] [<ffffffff811bb316>] ? filename_lookup+0x26/0xc0 >>>> [Thu Aug 9 14:21:07 2018] [<ffffffff811bf594>] ? user_path_at_empty+0x54/0x90 >>>> [Thu Aug 9 14:21:07 2018] [<ffffffff81193e08>] ? kmem_cache_free+0xd8/0x210 >>>> [Thu Aug 9 14:21:07 2018] [<ffffffff811bf59f>] ? user_path_at_empty+0x5f/0x90 >>>> [Thu Aug 9 14:21:07 2018] [<ffffffff811b3d46>] ? vfs_fstatat+0x46/0x90 >>>> [Thu Aug 9 14:21:07 2018] [<ffffffff811b421d>] ? SYSC_newlstat+0x1d/0x40 >>>> [Thu Aug 9 14:21:07 2018] [<ffffffff811d34b8>] ? SyS_lgetxattr+0x58/0x80 >>>> [Thu Aug 9 14:21:07 2018] [<ffffffff81525d0d>] ? system_call_fast_compare_end+0x10/0x15 >>>> >>>> My 3 gluster nodes are all Debian 9 and my client Debian 8. >>>> >>>> Let me know if you need more information. >>>> >>>> Best regards, >>>> Mabi >>>> _______________________________________________ >>>> Gluster-users mailing list >>>> Gluster-users at gluster.org >>>> https://lists.gluster.org/mailman/listinfo/gluster-users >> >> _______________________________________________ >> Gluster-users mailing list >> Gluster-users at gluster.org >> https://lists.gluster.org/mailman/listinfo/gluster-users-------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.gluster.org/pipermail/gluster-users/attachments/20180809/93d933d2/attachment.html>