[Gluster-users] possible memory leak in client/fuse mount

Wed Nov 25 12:20:24 UTC 2020

Hi Ashish,

Thank you for looking into this. I indeed also suspect it has something
todo with the 7.X client, because on the 6.X clients the issue doesn't
really seem to occur.
I would love to update everything to 7.X, But since the self-heal daemons (
https://lists.gluster.org/pipermail/gluster-users/2020-November/038917.html)
won't start, i halted the full upgrade.
Hopefully that issue will be addressed in the upcoming release. Once i've
everything running on the same version i'll check if the issue still occurs
and reach out, if that's the case.

Thanks Olaf

Op wo 25 nov. 2020 om 10:42 schreef Ashish Pandey <aspandey at redhat.com>:

>
> Hi,
>
> I checked the statedump and found some very high memory allocations.
> grep -rwn "num_allocs" glusterdump.17317.dump.1605* | cut -d'=' -f2 | sort
>
> 30003616
> 30003616
> 3305
> 3305
> 36960008
> 36960008
> 38029944
> 38029944
> 38450472
> 38450472
> 39566824
> 39566824
> 4
> I did check the lines on statedump and it could be happening in
> protocol/clinet. However, I did not find anything suspicious in my quick
> code exploration.
> I would suggest to upgrade all the nodes on latest version and the start
> your work and see if there is any high usage of memory .
> That way it will also be easier to debug this issue.
>
> ---
> Ashish
>
> ------------------------------
> *From: *"Olaf Buitelaar" <olaf.buitelaar at gmail.com>
> *To: *"gluster-users" <gluster-users at gluster.org>
> *Sent: *Thursday, November 19, 2020 10:28:57 PM
> *Subject: *[Gluster-users] possible memory leak in client/fuse mount
>
> Dear Gluster Users,
>
> I've a glusterfs process which consumes about all memory of the machine
> (~58GB);
>
> # ps -faxu|grep 17317
> root     17317  3.1 88.9 59695516 58479708 ?   Ssl  Oct31 839:36
> /usr/sbin/glusterfs --process-name fuse --volfile-server=10.201.0.1
> --volfile-server=10.201.0.8:10.201.0.5:10.201.0.6:10.201.0.7:10.201.0.9
> --volfile-id=/docker2 /mnt/docker2
>
> The gluster version on this machine is 7.8, but i'm currently running a
> mixed cluster of 6.10 and 7.8, while awaiting to proceed to upgrade for the
> issue mentioned earlier with the self-heal daemon.
>
> The affected volume info looks like;
>
> # gluster v info docker2
>
> Volume Name: docker2
> Type: Distributed-Replicate
> Volume ID: 4e0670a0-3d00-4360-98bd-3da844cedae5
> Status: Started
> Snapshot Count: 0
> Number of Bricks: 3 x (2 + 1) = 9
> Transport-type: tcp
> Bricks:
> Brick1: 10.201.0.5:/data0/gfs/bricks/brick1/docker2
> Brick2: 10.201.0.9:/data0/gfs/bricks/brick1/docker2
> Brick3: 10.201.0.3:/data0/gfs/bricks/bricka/docker2 (arbiter)
> Brick4: 10.201.0.6:/data0/gfs/bricks/brick1/docker2
> Brick5: 10.201.0.7:/data0/gfs/bricks/brick1/docker2
> Brick6: 10.201.0.4:/data0/gfs/bricks/bricka/docker2 (arbiter)
> Brick7: 10.201.0.1:/data0/gfs/bricks/brick1/docker2
> Brick8: 10.201.0.8:/data0/gfs/bricks/brick1/docker2
> Brick9: 10.201.0.2:/data0/gfs/bricks/bricka/docker2 (arbiter)
> Options Reconfigured:
> performance.cache-size: 128MB
> transport.address-family: inet
> nfs.disable: on
> cluster.brick-multiplex: on
>
> The issue seems to be triggered by a program called zammad, which has an
> init process, which runs in a loop. on cycle it re-compiles the
> ruby-on-rails application.
>
> I've attached 2 statedumps, but as i only recently noticed the high memory
> usage, i believe both statedumps already show an escalated state of the
> glusterfs process. If it's needed to also have them from the beginning let
> me know. The dumps are taken about an hour apart.
> Also i've included the glusterd.log. I couldn't include mnt-docker2.log
> since it's too large, since it's littered with: " I [MSGID: 109066]
> [dht-rename.c:1951:dht_rename] 0-docker2-dht"
> However i've inspected the log and it contains no Error message's all are
> of the Info kind;
> which look like these;
> [2020-11-19 03:29:05.406766] I [glusterfsd-mgmt.c:2282:mgmt_getspec_cbk]
> 0-glusterfs: No change in volfile,continuing
> [2020-11-19 03:29:21.271886] I [socket.c:865:__socket_shutdown]
> 0-docker2-client-8: intentional socket shutdown(5)
> [2020-11-19 03:29:24.479738] I [socket.c:865:__socket_shutdown]
> 0-docker2-client-2: intentional socket shutdown(5)
> [2020-11-19 03:30:12.318146] I [socket.c:865:__socket_shutdown]
> 0-docker2-client-5: intentional socket shutdown(5)
> [2020-11-19 03:31:27.381720] I [socket.c:865:__socket_shutdown]
> 0-docker2-client-8: intentional socket shutdown(5)
> [2020-11-19 03:31:30.579630] I [socket.c:865:__socket_shutdown]
> 0-docker2-client-2: intentional socket shutdown(5)
> [2020-11-19 03:32:18.427364] I [socket.c:865:__socket_shutdown]
> 0-docker2-client-5: intentional socket shutdown(5)
>
> The rename messages look like these;
> [2020-11-19 03:29:05.402663] I [MSGID: 109066]
> [dht-rename.c:1951:dht_rename] 0-docker2-dht: renaming
> /corporate/zammad/tmp/init/cache/bootsnap-compile-cache/95/75f93c20e375c5.tmp.eVcE5D
> (fe083b7e-b0d5-485c-8666-e1f7cdac33e2)
> (hash=docker2-replicate-2/cache=docker2-replicate-2) =>
> /corporate/zammad/tmp/init/cache/bootsnap-compile-cache/95/75f93c20e375c5
> ((null)) (hash=docker2-replicate-2/cache=<nul>)
> [2020-11-19 03:29:05.410972] I [MSGID: 109066]
> [dht-rename.c:1951:dht_rename] 0-docker2-dht: renaming
> /corporate/zammad/tmp/init/cache/bootsnap-compile-cache/0d/86dd25f3d238ff.tmp.AdDTLu
> (b1edadad-1d48-4bf4-be85-ffbe9d69d338)
> (hash=docker2-replicate-1/cache=docker2-replicate-1) =>
> /corporate/zammad/tmp/init/cache/bootsnap-compile-cache/0d/86dd25f3d238ff
> ((null)) (hash=docker2-replicate-2/cache=<nul>)
> [2020-11-19 03:29:05.420064] I [MSGID: 109066]
> [dht-rename.c:1951:dht_rename] 0-docker2-dht: renaming
> /corporate/zammad/tmp/init/cache/bootsnap-compile-cache/f2/6e44f76b508fd3.tmp.QKmxul
> (31f80fcb-977c-433b-9259-5fdfcad1171c)
> (hash=docker2-replicate-0/cache=docker2-replicate-0) =>
> /corporate/zammad/tmp/init/cache/bootsnap-compile-cache/f2/6e44f76b508fd3
> ((null)) (hash=docker2-replicate-0/cache=<nul>)
> [2020-11-19 03:29:05.427537] I [MSGID: 109066]
> [dht-rename.c:1951:dht_rename] 0-docker2-dht: renaming
> /corporate/zammad/tmp/init/cache/bootsnap-compile-cache/b0/1d7303d9dfe009.tmp.qLUMec
> (e2fdf971-731f-4765-80e8-3165433488ea)
> (hash=docker2-replicate-2/cache=docker2-replicate-2) =>
> /corporate/zammad/tmp/init/cache/bootsnap-compile-cache/b0/1d7303d9dfe009
> ((null)) (hash=docker2-replicate-1/cache=<nul>)
> [2020-11-19 03:29:05.440576] I [MSGID: 109066]
> [dht-rename.c:1951:dht_rename] 0-docker2-dht: renaming
> /corporate/zammad/tmp/init/cache/bootsnap-compile-cache/bd/952a089e164b36.tmp.4qvl22
> (3e0bc6d1-13ac-47c6-b221-1256b4b506ef)
> (hash=docker2-replicate-2/cache=docker2-replicate-2) =>
> /corporate/zammad/tmp/init/cache/bootsnap-compile-cache/bd/952a089e164b36
> ((null)) (hash=docker2-replicate-1/cache=<nul>)
> [2020-11-19 03:29:05.452407] I [MSGID: 109066]
> [dht-rename.c:1951:dht_rename] 0-docker2-dht: renaming
> /corporate/zammad/tmp/init/cache/bootsnap-compile-cache/a3/b587dd08f35e2e.tmp.iIweTT
> (9685b5f3-4b14-4050-9b00-1163856239b5)
> (hash=docker2-replicate-1/cache=docker2-replicate-1) =>
> /corporate/zammad/tmp/init/cache/bootsnap-compile-cache/a3/b587dd08f35e2e
> ((null)) (hash=docker2-replicate-0/cache=<nul>)
> [2020-11-19 03:29:05.460720] I [MSGID: 109066]
> [dht-rename.c:1951:dht_rename] 0-docker2-dht: renaming
> /corporate/zammad/tmp/init/cache/bootsnap-compile-cache/48/89cfb1b971c025.tmp.0W7jMK
> (d0a8d0a4-c783-45db-bb4a-68e24044d830)
> (hash=docker2-replicate-0/cache=docker2-replicate-0) =>
> /corporate/zammad/tmp/init/cache/bootsnap-compile-cache/48/89cfb1b971c025
> ((null)) (hash=docker2-replicate-1/cache=<nul>)
> [2020-11-19 03:29:05.468800] I [MSGID: 109066]
> [dht-rename.c:1951:dht_rename] 0-docker2-dht: renaming
> /corporate/zammad/tmp/init/cache/bootsnap-compile-cache/d9/759d55e8da66eb.tmp.2yXtHB
> (e5b61ef5-a3c2-4a2c-aa47-c377a6c090d7)
> (hash=docker2-replicate-0/cache=docker2-replicate-0) =>
> /corporate/zammad/tmp/init/cache/bootsnap-compile-cache/d9/759d55e8da66eb
> ((null)) (hash=docker2-replicate-0/cache=<nul>)
> [2020-11-19 03:29:05.476745] I [MSGID: 109066]
> [dht-rename.c:1951:dht_rename] 0-docker2-dht: renaming
> /corporate/zammad/tmp/init/cache/bootsnap-compile-cache/1c/f3a658342e36b7.tmp.gSkiEs
> (17181a40-f9b2-438f-9dfc-7bb159c516e6)
> (hash=docker2-replicate-2/cache=docker2-replicate-2) =>
> /corporate/zammad/tmp/init/cache/bootsnap-compile-cache/1c/f3a658342e36b7
> ((null)) (hash=docker2-replicate-0/cache=<nul>)
> [2020-11-19 03:29:05.486729] I [MSGID: 109066]
> [dht-rename.c:1951:dht_rename] 0-docker2-dht: renaming
> /corporate/zammad/tmp/init/cache/bootsnap-compile-cache/f1/6bef7cb6446c7a.tmp.sVT0Dj
> (cb6b1d52-b1c0-420c-86b7-2ceb8e8e73db)
> (hash=docker2-replicate-0/cache=docker2-replicate-0) =>
> /corporate/zammad/tmp/init/cache/bootsnap-compile-cache/f1/6bef7cb6446c7a
> ((null)) (hash=docker2-replicate-1/cache=<nul>)
> [2020-11-19 03:29:05.495115] I [MSGID: 109066]
> [dht-rename.c:1951:dht_rename] 0-docker2-dht: renaming
> /corporate/zammad/tmp/init/cache/bootsnap-compile-cache/45/73ba226559961b.tmp.QdPTFa
> (d8450d9e-62a7-4fd5-9dd2-e072e318d9a0)
> (hash=docker2-replicate-0/cache=docker2-replicate-0) =>
> /corporate/zammad/tmp/init/cache/bootsnap-compile-cache/45/73ba226559961b
> ((null)) (hash=docker2-replicate-1/cache=<nul>)
> [2020-11-19 03:29:05.503424] I [MSGID: 109066]
> [dht-rename.c:1951:dht_rename] 0-docker2-dht: renaming
> /corporate/zammad/tmp/init/cache/bootsnap-compile-cache/13/29c0df35961ca0.tmp.s1xUJ1
> (ffc57a77-8b91-4264-8e2d-a9966f0f37ef)
> (hash=docker2-replicate-1/cache=docker2-replicate-1) =>
> /corporate/zammad/tmp/init/cache/bootsnap-compile-cache/13/29c0df35961ca0
> ((null)) (hash=docker2-replicate-2/cache=<nul>)
> [2020-11-19 03:29:05.513532] I [MSGID: 109066]
> [dht-rename.c:1951:dht_rename] 0-docker2-dht: renaming
> /corporate/zammad/tmp/init/cache/bootsnap-compile-cache/be/8d6a07b6a0d6ad.tmp.A5DzQS
> (5a595a65-372d-4377-b547-2c4e23f7be3a)
> (hash=docker2-replicate-1/cache=docker2-replicate-1) =>
> /corporate/zammad/tmp/init/cache/bootsnap-compile-cache/be/8d6a07b6a0d6ad
> ((null)) (hash=docker2-replicate-0/cache=<nul>)
> [2020-11-19 03:29:05.526885] I [MSGID: 109066]
> [dht-rename.c:1951:dht_rename] 0-docker2-dht: renaming
> /corporate/zammad/tmp/init/cache/bootsnap-compile-cache/ec/4208216d993cbe.tmp.IMXg0J
> (2fa99fcd-64f8-4934-aeda-b356816f1132)
> (hash=docker2-replicate-2/cache=docker2-replicate-2) =>
> /corporate/zammad/tmp/init/cache/bootsnap-compile-cache/ec/4208216d993cbe
> ((null)) (hash=docker2-replicate-2/cache=<nul>)
> [2020-11-19 03:29:05.537637] I [MSGID: 109066]
> [dht-rename.c:1951:dht_rename] 0-docker2-dht: renaming
> /corporate/zammad/tmp/init/cache/bootsnap-compile-cache/57/1527c482cf2d6b.tmp.Y2L0cB
> (db24d7bf-4a06-4356-a52e-1ab9537d1c3a)
> (hash=docker2-replicate-0/cache=docker2-replicate-0) =>
> /corporate/zammad/tmp/init/cache/bootsnap-compile-cache/57/1527c482cf2d6b
> ((null)) (hash=docker2-replicate-1/cache=<nul>)
> [2020-11-19 03:29:05.547878] I [MSGID: 109066]
> [dht-rename.c:1951:dht_rename] 0-docker2-dht: renaming
> /corporate/zammad/tmp/init/cache/bootsnap-compile-cache/88/1b60ead8d4c4e5.tmp.u47rss
> (b12f041b-5bbd-4e3d-b700-8f673830393f)
> (hash=docker2-replicate-1/cache=docker2-replicate-1) =>
> /corporate/zammad/tmp/init/cache/bootsnap-compile-cache/88/1b60ead8d4c4e5
> ((null)) (hash=docker2-replicate-1/cache=<nul>)
>
> if i can provide any more information please let me know.
>
> Thanks Olaf
>
>
> ________
>
>
>
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