pvesr task (ZFS replication) triggers kernel crash on Proxmox 7

cocoboig

Member
May 25, 2020
11
3
8
51
After 6 days working ok with Linux proxmox 5.11.22-3-pve #1 SMP PVE 5.11.22-6 (Wed, 28 Jul 2021 10:51:12 +0200) x86_64 GNU/Linux
a same kernel crash appears (always "pvesr" task) on main node:

Main node:
Supermicro X10SDV-TLN4F motherboard
64GB RAM
16 x Intel(R) Xeon(R) CPU D-1541 @ 2.10GHz (1 Socket)
rpool 2 x Intel SSD D3-S4510 960GB (sata)
pool1 2 x HGST Ultrastar DC H520 12TB (sata)
zfs logs 1 x Intel Optane SSD 800p 60GB
Load average is low, IO delay is 0.00% for the most of time

Secondary node:
HP Microserver G8
16GB RAM
8 x Intel(R) Xeon(R) CPU E3-1265L V2 @ 2.50GHz (1 Socket)
rpool 2 x Intel SSD D3-S4510 960GB (sata)
pool1 2 x Western Digital Gold 2TB (sata)

All systems are using:
Linux 5.11.22-3-pve #1 SMP PVE 5.11.22-6 (Wed, 28 Jul 2021 10:51:12 +0200)

Containers amb virtual machines are in rpool and replicating each 30 minutes with "Proxmox replication" from Supermicro node to HP Microserver
Some ZFS volumes of pool1 are replicating each hour using "syncoid" from from Supermicro node to HP Microserver
Supermicro node is replicating some containers from external server to it using "syncoid".

zpool status on Supermicro server:
Code:
root@proxmox:~# zpool status
  pool: pool1
 state: ONLINE
  scan: scrub repaired 0B in 04:03:43 with 0 errors on Sun Aug  8 04:27:44 2021
config:

        NAME        STATE     READ WRITE CKSUM
        pool1       ONLINE       0     0     0
          mirror-0  ONLINE       0     0     0
            sdc     ONLINE       0     0     0
            sdd     ONLINE       0     0     0
        logs
          nvme0n1   ONLINE       0     0     0

errors: No known data errors

  pool: rpool
 state: ONLINE
  scan: scrub repaired 0B in 01:07:15 with 0 errors on Sun Aug  8 01:31:19 2021
config:

        NAME        STATE     READ WRITE CKSUM
        rpool       ONLINE       0     0     0
          mirror-0  ONLINE       0     0     0
            sda3    ONLINE       0     0     0
            sdb3    ONLINE       0     0     0

errors: No known data errors

zpool status on HP Microserver:
Code:
root@proxmox2:~# root@proxmox2:~# zpool status
  pool: pool1
 state: ONLINE
  scan: scrub repaired 0B in 03:23:48 with 0 errors on Sun Aug  8 03:47:49 2021
config:

        NAME        STATE     READ WRITE CKSUM
        pool1       ONLINE       0     0     0
          mirror-0  ONLINE       0     0     0
            sdc     ONLINE       0     0     0
            sdd     ONLINE       0     0     0

errors: No known data errors

  pool: rpool
 state: ONLINE
  scan: scrub repaired 0B in 00:53:39 with 0 errors on Sun Aug  8 01:17:41 2021
config:

        NAME                                                  STATE     READ WRITE CKSUM
        rpool                                                 ONLINE       0     0     0
          mirror-0                                            ONLINE       0     0     0
            ata-INTEL_SSDSC2KB960G8_PHYF912000JF960CGN-part3  ONLINE       0     0     0
            ata-INTEL_SSDSC2KB960G8_PHYF912000KL960CGN-part3  ONLINE       0     0     0

errors: No known data errors

zfs packages installed:
libzfs4linux/stable,now 2.0.5-pve1 amd64 [installed,automatic]
zfs-initramfs/stable,now 2.0.5-pve1 all [installed]
zfs-zed/stable,now 2.0.5-pve1 amd64 [installed]
zfsutils-linux/stable,now 2.0.5-pve1 amd64 [installed]

Only crashes on Supermicro node (main node):
Code:
[556186.483567] INFO: task pvesr:3931554 blocked for more than 120 seconds.
[556186.483601]       Tainted: P           O      5.11.22-3-pve #1
[556186.483620] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[556186.483645] task:pvesr           state:D stack:    0 pid:3931554 ppid:3931526 flags:0x00000000
[556186.483650] Call Trace:
[556186.483653]  __schedule+0x2ca/0x880
[556186.483660]  schedule+0x4f/0xc0
[556186.483663]  rwsem_down_write_slowpath+0x212/0x590
[556186.483669]  down_write+0x43/0x50
[556186.483672]  filename_create+0x7e/0x160
[556186.483677]  do_mkdirat+0x58/0x140
[556186.483681]  __x64_sys_mkdir+0x1b/0x20
[556186.483684]  do_syscall_64+0x38/0x90
[556186.483688]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[556186.483692] RIP: 0033:0x7fcb8cbc7b07
[556186.483695] RSP: 002b:00007fffb911de98 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
[556186.483697] RAX: ffffffffffffffda RBX: 000055e3ac9a62a0 RCX: 00007fcb8cbc7b07
[556186.483699] RDX: 000055e3ac455a65 RSI: 00000000000001ff RDI: 000055e3b0778880
[556186.483700] RBP: 0000000000000000 R08: 000055e3b09fe018 R09: 0000000000000000
[556186.483702] R10: 0000000000000008 R11: 0000000000000246 R12: 000055e3b0778880
[556186.483703] R13: 000055e3adc9f028 R14: 000055e3b0c37ef8 R15: 00000000000001ff
[556307.314854] INFO: task pvesr:3931554 blocked for more than 241 seconds.
[556307.314940]       Tainted: P           O      5.11.22-3-pve #1
[556307.315014] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[556307.315037] task:pvesr           state:D stack:    0 pid:3931554 ppid:3931526 flags:0x00000000
[556307.315041] Call Trace:
[556307.315045]  __schedule+0x2ca/0x880
[556307.315052]  schedule+0x4f/0xc0
[556307.315055]  rwsem_down_write_slowpath+0x212/0x590
[556307.315061]  down_write+0x43/0x50
[556307.315064]  filename_create+0x7e/0x160
[556307.315070]  do_mkdirat+0x58/0x140
[556307.315073]  __x64_sys_mkdir+0x1b/0x20
[556307.315076]  do_syscall_64+0x38/0x90
[556307.315080]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[556307.315084] RIP: 0033:0x7fcb8cbc7b07
[556307.315087] RSP: 002b:00007fffb911de98 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
[556307.315089] RAX: ffffffffffffffda RBX: 000055e3ac9a62a0 RCX: 00007fcb8cbc7b07
[556307.315091] RDX: 000055e3ac455a65 RSI: 00000000000001ff RDI: 000055e3b0778880
[556307.315092] RBP: 0000000000000000 R08: 000055e3b09fe018 R09: 0000000000000000
[556307.315094] R10: 0000000000000008 R11: 0000000000000246 R12: 000055e3b0778880
[556307.315095] R13: 000055e3adc9f028 R14: 000055e3b0c37ef8 R15: 00000000000001ff
 

Stoiko Ivanov

Proxmox Staff Member
Staff member
May 2, 2018
7,695
1,258
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After 6 days working ok with Linux proxmox 5.11.22-3-pve #1 SMP PVE 5.11.22-6 (Wed, 28 Jul 2021 10:51:12 +0200) x86_64 GNU/Linux
a same kernel crash appears (always "pvesr" task) on main node:
from the traces you posted this looks like a hung task (something that I would not normally classify as crash):
[556186.483567] INFO: task pvesr:3931554 blocked for more than 120 seconds.

Is the system still responding after this gets printed to the dmesg? - can you still ssh into it?, are logs still added in journalctl -f?

In any case - the stacktrace seems to show that the system cannot create a directory at that moment - can you run `mkdir /var/log/tst` when this error occurs?
do you have any other issues in the journal around the time the hung_tasks get printed?

Thanks!
 

cocoboig

Member
May 25, 2020
11
3
8
51
from the traces you posted this looks like a hung task (something that I would not normally classify as crash):


Is the system still responding after this gets printed to the dmesg? - can you still ssh into it?, are logs still added in journalctl -f?

In any case - the stacktrace seems to show that the system cannot create a directory at that moment - can you run `mkdir /var/log/tst` when this error occurs?
do you have any other issues in the journal around the time the hung_tasks get printed?

Thanks!

I can connect with ssh, but if I type:
reboot
it doesn't work, I need force it:
reboot -f

Waiting next task hung of pvesr to provide to you more info (1 week approx.)

Thanks,
Josep
 
Last edited:

Stoiko Ivanov

Proxmox Staff Member
Staff member
May 2, 2018
7,695
1,258
169
Waiting next task hung of pvesr to provide to you more info (1 week approx.)
hm - ok - if it always takes a while until the issue hits that's also informative.

In any case it would be interesting to see which processes are running when the problem happens - the output of `ps auxwf` would help!

In the mean-time could you maybe share the syslogs (or if you have persistent journalling enabled the journal) - from roughly 1 h before the stack-trace was printed and until you rebooted - Thanks!
 

cocoboig

Member
May 25, 2020
11
3
8
51
Extracted relevant parts. Attached full logs of period.

First and last message about pvesr task fail from /var/log/kern.log file:

Code:
Aug 25 08:03:52 proxmox kernel: [556186.483601]       Tainted: P           O      5.11.22-3-pve #1
Aug 25 08:03:52 proxmox kernel: [556186.483645] task:pvesr           state:D stack:    0 pid:3931554 ppid:3931526 flags:0x00000000
Aug 25 08:03:52 proxmox kernel: [556186.483653]  __schedule+0x2ca/0x880
Aug 25 08:03:52 proxmox kernel: [556186.483663]  rwsem_down_write_slowpath+0x212/0x590
Aug 25 08:03:52 proxmox kernel: [556186.483672]  filename_create+0x7e/0x160
Aug 25 08:03:52 proxmox kernel: [556186.483681]  __x64_sys_mkdir+0x1b/0x20
Aug 25 08:03:52 proxmox kernel: [556186.483688]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
Aug 25 08:03:52 proxmox kernel: [556186.483695] RSP: 002b:00007fffb911de98 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
Aug 25 08:03:52 proxmox kernel: [556186.483699] RDX: 000055e3ac455a65 RSI: 00000000000001ff RDI: 000055e3b0778880
Aug 25 08:03:52 proxmox kernel: [556186.483702] R10: 0000000000000008 R11: 0000000000000246 R12: 000055e3b0778880
Aug 25 08:07:54 proxmox kernel: [556428.145987] task:pvesr           state:D stack:    0 pid:3931554 ppid:3931526 flags:0x00000000
Aug 25 08:07:54 proxmox kernel: [556428.146002]  schedule+0x4f/0xc0
Aug 25 08:07:54 proxmox kernel: [556428.146011]  down_write+0x43/0x50
Aug 25 08:07:54 proxmox kernel: [556428.146020]  do_mkdirat+0x58/0x140
Aug 25 08:07:54 proxmox kernel: [556428.146026]  do_syscall_64+0x38/0x90
Aug 25 08:07:54 proxmox kernel: [556428.146035] RIP: 0033:0x7fcb8cbc7b07
Aug 25 08:07:54 proxmox kernel: [556428.146040] RAX: ffffffffffffffda RBX: 000055e3ac9a62a0 RCX: 00007fcb8cbc7b07
Aug 25 08:07:54 proxmox kernel: [556428.146043] RBP: 0000000000000000 R08: 000055e3b09fe018 R09: 0000000000000000
Aug 25 08:07:54 proxmox kernel: [556428.146046] R13: 000055e3adc9f028 R14: 000055e3b0c37ef8 R15: 00000000000001ff
...
Aug 25 08:15:57 proxmox kernel: [556911.470426] INFO: task pvesr:3931554 blocked for more than 845 seconds.
Aug 25 08:15:57 proxmox kernel: [556911.470583] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Aug 25 08:15:57 proxmox kernel: [556911.470610] Call Trace:
Aug 25 08:15:57 proxmox kernel: [556911.470621]  schedule+0x4f/0xc0
Aug 25 08:15:57 proxmox kernel: [556911.470630]  down_write+0x43/0x50
Aug 25 08:15:57 proxmox kernel: [556911.470638]  do_mkdirat+0x58/0x140
Aug 25 08:15:57 proxmox kernel: [556911.470645]  do_syscall_64+0x38/0x90
Aug 25 08:15:57 proxmox kernel: [556911.470653] RIP: 0033:0x7fcb8cbc7b07
Aug 25 08:15:57 proxmox kernel: [556911.470658] RAX: ffffffffffffffda RBX: 000055e3ac9a62a0 RCX: 00007fcb8cbc7b07
Aug 25 08:15:57 proxmox kernel: [556911.470661] RBP: 0000000000000000 R08: 000055e3b09fe018 R09: 0000000000000000
Aug 25 08:15:57 proxmox kernel: [556911.470663] R13: 000055e3adc9f028 R14: 000055e3b0c37ef8 R15: 00000000000001ff
Aug 25 08:19:59 proxmox kernel: [557153.133268]  __schedule+0x2ca/0x880
Aug 25 08:19:59 proxmox kernel: [557153.133276]  rwsem_down_write_slowpath+0x212/0x590
Aug 25 08:19:59 proxmox kernel: [557153.133285]  filename_create+0x7e/0x160
Aug 25 08:19:59 proxmox kernel: [557153.133293]  __x64_sys_mkdir+0x1b/0x20
Aug 25 08:19:59 proxmox kernel: [557153.133300]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
Aug 25 08:19:59 proxmox kernel: [557153.133306] RSP: 002b:00007fffb911de98 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
Aug 25 08:19:59 proxmox kernel: [557153.133311] RDX: 000055e3ac455a65 RSI: 00000000000001ff RDI: 000055e3b0778880
Aug 25 08:19:59 proxmox kernel: [557153.133313] R10: 0000000000000008 R11: 0000000000000246 R12: 000055e3b0778880
Aug 25 10:30:41 proxmox kernel: [564995.037274] kvm: exiting hardware virtualization
Aug 25 10:30:41 proxmox kernel: [564995.038363] sd 3:0:0:0: [sdd] Synchronizing SCSI cache
Aug 25 10:30:41 proxmox kernel: [564995.039151] sd 2:0:0:0: [sdc] Synchronizing SCSI cache
Aug 25 10:30:41 proxmox kernel: [564995.039975] sd 1:0:0:0: [sdb] Synchronizing SCSI cache
Aug 25 10:30:41 proxmox kernel: [564995.040005] sd 0:0:0:0: [sda] Synchronizing SCSI cache


First and last message about pvesr task fail from /var/log/messages file:

Code:
Aug 25 08:03:52 proxmox kernel: [556186.483645] task:pvesr           state:D stack:    0 pid:3931554 ppid:3931526 flags:0x00000000
Aug 25 08:03:52 proxmox kernel: [556186.483653]  __schedule+0x2ca/0x880
Aug 25 08:03:52 proxmox kernel: [556186.483663]  rwsem_down_write_slowpath+0x212/0x590
Aug 25 08:03:52 proxmox kernel: [556186.483672]  filename_create+0x7e/0x160
Aug 25 08:03:52 proxmox kernel: [556186.483681]  __x64_sys_mkdir+0x1b/0x20
Aug 25 08:03:52 proxmox kernel: [556186.483688]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
Aug 25 08:03:52 proxmox kernel: [556186.483695] RSP: 002b:00007fffb911de98 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
Aug 25 08:03:52 proxmox kernel: [556186.483699] RDX: 000055e3ac455a65 RSI: 00000000000001ff RDI: 000055e3b0778880
Aug 25 08:03:52 proxmox kernel: [556186.483702] R10: 0000000000000008 R11: 0000000000000246 R12: 000055e3b0778880
...
Aug 25 08:11:56 proxmox kernel: [556669.808203] task:pvesr           state:D stack:    0 pid:3931554 ppid:3931526 flags:0x00000000
Aug 25 08:11:56 proxmox kernel: [556669.808211]  __schedule+0x2ca/0x880
Aug 25 08:11:56 proxmox kernel: [556669.808221]  rwsem_down_write_slowpath+0x212/0x590
Aug 25 08:11:56 proxmox kernel: [556669.808230]  filename_create+0x7e/0x160
Aug 25 08:11:56 proxmox kernel: [556669.808239]  __x64_sys_mkdir+0x1b/0x20
Aug 25 08:11:56 proxmox kernel: [556669.808247]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
Aug 25 08:11:56 proxmox kernel: [556669.808253] RSP: 002b:00007fffb911de98 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
Aug 25 08:11:56 proxmox kernel: [556669.808258] RDX: 000055e3ac455a65 RSI: 00000000000001ff RDI: 000055e3b0778880
Aug 25 08:11:56 proxmox kernel: [556669.808260] R10: 0000000000000008 R11: 0000000000000246 R12: 000055e3b0778880
Aug 25 08:15:57 proxmox kernel: [556911.470610] Call Trace:
Aug 25 08:15:57 proxmox kernel: [556911.470621]  schedule+0x4f/0xc0
Aug 25 08:15:57 proxmox kernel: [556911.470630]  down_write+0x43/0x50
Aug 25 08:15:57 proxmox kernel: [556911.470638]  do_mkdirat+0x58/0x140
Aug 25 08:15:57 proxmox kernel: [556911.470645]  do_syscall_64+0x38/0x90
Aug 25 08:15:57 proxmox kernel: [556911.470653] RIP: 0033:0x7fcb8cbc7b07
Aug 25 08:15:57 proxmox kernel: [556911.470658] RAX: ffffffffffffffda RBX: 000055e3ac9a62a0 RCX: 00007fcb8cbc7b07
Aug 25 08:15:57 proxmox kernel: [556911.470661] RBP: 0000000000000000 R08: 000055e3b09fe018 R09: 0000000000000000
Aug 25 08:15:57 proxmox kernel: [556911.470663] R13: 000055e3adc9f028 R14: 000055e3b0c37ef8 R15: 00000000000001ff
Aug 25 08:19:59 proxmox kernel: [557153.133268]  __schedule+0x2ca/0x880
Aug 25 08:19:59 proxmox kernel: [557153.133276]  rwsem_down_write_slowpath+0x212/0x590
Aug 25 08:19:59 proxmox kernel: [557153.133285]  filename_create+0x7e/0x160
Aug 25 08:19:59 proxmox kernel: [557153.133293]  __x64_sys_mkdir+0x1b/0x20
Aug 25 08:19:59 proxmox kernel: [557153.133300]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
Aug 25 08:19:59 proxmox kernel: [557153.133306] RSP: 002b:00007fffb911de98 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
Aug 25 08:19:59 proxmox kernel: [557153.133311] RDX: 000055e3ac455a65 RSI: 00000000000001ff RDI: 000055e3b0778880
Aug 25 08:19:59 proxmox kernel: [557153.133313] R10: 0000000000000008 R11: 0000000000000246 R12: 000055e3b0778880
Aug 25 10:26:27 proxmox zed[3029]: Exiting


Relevant part from /var/log/syslog file:

Code:
Aug 25 08:00:01 proxmox systemd[1]: Starting Snapshot ZFS filesystems...
Aug 25 08:00:01 proxmox systemd[1]: Started Session 90046 of user root.
Aug 25 08:00:01 proxmox sanoid[3931500]: INFO: cache expired - updating from zfs list.
Aug 25 08:00:02 proxmox CRON[3931520]: (root) CMD (/root/scripts/mail_status.sh)
Aug 25 08:00:02 proxmox CRON[3931521]: (root) CMD ([ -f /etc/sanoid/sanoid.conf ] && if [ ! -d /run/systemd/system ]; then TZ=UTC /usr/sbin/sanoid --cron --quiet; fi)
Aug 25 08:00:03 proxmox systemd[1]: Started Session 90049 of user root.
Aug 25 08:00:03 proxmox systemd[1]: session-90049.scope: Succeeded.
Aug 25 08:00:04 proxmox sanoid[3931500]: INFO: taking snapshots...
Aug 25 08:00:04 proxmox sanoid[3931500]: taking snapshot pool1/revistes@autosnap_2021-08-25_06:00:04_hourly
Aug 25 08:00:04 proxmox sanoid[3931500]: taking snapshot pool1/revistes@autosnap_2021-08-25_06:00:04_frequently
Aug 25 08:00:04 proxmox sanoid[3931500]: taking snapshot rpool/data/subvol-105-disk-0@autosnap_2021-08-25_06:00:04_hourly
Aug 25 08:00:04 proxmox sanoid[3931500]: taking snapshot rpool/data/subvol-105-disk-0@autosnap_2021-08-25_06:00:04_frequently
Aug 25 08:00:04 proxmox sanoid[3931500]: taking snapshot pool1/llibres@autosnap_2021-08-25_06:00:04_hourly
Aug 25 08:00:05 proxmox sanoid[3931500]: taking snapshot pool1/llibres@autosnap_2021-08-25_06:00:04_frequently
...
Aug 25 08:00:10 proxmox sanoid[3931500]: INFO: cache expired - updating from zfs list.
Aug 25 08:00:13 proxmox systemd[1]: sanoid.service: Succeeded.
Aug 25 08:00:13 proxmox systemd[1]: Finished Snapshot ZFS filesystems.
Aug 25 08:00:13 proxmox systemd[1]: sanoid.service: Consumed 6.510s CPU time.
Aug 25 08:00:13 proxmox systemd[1]: Starting Prune ZFS snapshots...
Aug 25 08:00:13 proxmox sanoid[3937663]: INFO: pruning snapshots...
Aug 25 08:00:13 proxmox sanoid[3937663]: INFO: pruning rpool/data/subvol-122-disk-0@autosnap_2021-08-25_05:00:04_frequently ...
Aug 25 08:00:13 proxmox sanoid[3937663]: INFO: removing destroyed snapshots from cache.
Aug 25 08:00:13 proxmox sanoid[3937663]: INFO: pruning rpool/data/subvol-122-disk-0@autosnap_2021-08-23_18:00:02_hourly ...
Aug 25 08:00:13 proxmox sanoid[3937663]: INFO: removing destroyed snapshots from cache.
...
Aug 25 08:03:39 proxmox systemd[3958177]: Starting D-Bus User Message Bus Socket.
Aug 25 08:03:39 proxmox systemd[3958177]: Listening on GnuPG network certificate management daemon.
Aug 25 08:03:39 proxmox systemd[3958177]: Listening on GnuPG cryptographic agent and passphrase cache (access for web browsers).
Aug 25 08:03:39 proxmox systemd[3958177]: Listening on GnuPG cryptographic agent and passphrase cache (restricted).
Aug 25 08:03:39 proxmox systemd[3958177]: Listening on GnuPG cryptographic agent (ssh-agent emulation).
Aug 25 08:03:39 proxmox systemd[3958177]: Listening on GnuPG cryptographic agent and passphrase cache.
Aug 25 08:03:39 proxmox systemd[3958177]: Listening on D-Bus User Message Bus Socket.
Aug 25 08:03:39 proxmox systemd[3958177]: Reached target Sockets.
Aug 25 08:03:39 proxmox systemd[3958177]: Reached target Basic System.
Aug 25 08:03:39 proxmox systemd[3958177]: Reached target Main User Target.
Aug 25 08:03:39 proxmox systemd[3958177]: Startup finished in 228ms.
Aug 25 08:03:39 proxmox systemd[1]: Started User Manager for UID 0.
Aug 25 08:03:39 proxmox systemd[1]: Started Session 90087 of user root.
Aug 25 08:03:39 proxmox systemd[1]: session-90087.scope: Succeeded.
Aug 25 08:03:42 proxmox systemd[1]: Started Session 90089 of user root.
Aug 25 08:03:43 proxmox systemd[1]: session-90089.scope: Succeeded.
Aug 25 08:03:52 proxmox kernel: [556186.483601]       Tainted: P           O      5.11.22-3-pve #1
Aug 25 08:03:52 proxmox kernel: [556186.483645] task:pvesr           state:D stack:    0 pid:3931554 ppid:3931526 flags:0x00000000
Aug 25 08:03:52 proxmox kernel: [556186.483653]  __schedule+0x2ca/0x880
Aug 25 08:03:52 proxmox kernel: [556186.483663]  rwsem_down_write_slowpath+0x212/0x590
Aug 25 08:03:52 proxmox kernel: [556186.483672]  filename_create+0x7e/0x160
Aug 25 08:03:52 proxmox kernel: [556186.483681]  __x64_sys_mkdir+0x1b/0x20
Aug 25 08:03:52 proxmox kernel: [556186.483688]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
Aug 25 08:03:52 proxmox kernel: [556186.483695] RSP: 002b:00007fffb911de98 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
Aug 25 08:03:52 proxmox kernel: [556186.483699] RDX: 000055e3ac455a65 RSI: 00000000000001ff RDI: 000055e3b0778880
Aug 25 08:03:52 proxmox kernel: [556186.483702] R10: 0000000000000008 R11: 0000000000000246 R12: 000055e3b0778880
 

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  • proxmox7_pvesr_fail_log_files.zip
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cocoboig

Member
May 25, 2020
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Today, after 22 days, another time the "pvesr" process hangs, you can see the /var/log/kern.log file:

Code:
Sep 14 02:35:58 proxmox kernel: [1699437.896778] Buffer I/O error on dev zd48, logical block 143630, lost async page write
Sep 16 02:33:42 proxmox kernel: [1872100.190098] Buffer I/O error on dev zd48, logical block 910354, lost async page write
Sep 16 08:02:54 proxmox kernel: [1891852.363734] Call Trace:
Sep 16 08:02:54 proxmox kernel: [1891852.363746]  rwsem_down_write_slowpath+0x212/0x590
Sep 16 08:02:54 proxmox kernel: [1891852.363756]  filename_create+0x7e/0x160
Sep 16 08:02:54 proxmox kernel: [1891852.363765]  __x64_sys_mkdir+0x1b/0x20
Sep 16 08:02:54 proxmox kernel: [1891852.363771]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
Sep 16 08:02:54 proxmox kernel: [1891852.363778] RSP: 002b:00007ffc5dbc0f38 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
Sep 16 08:02:54 proxmox kernel: [1891852.363782] RDX: 000055b4cdeb1a65 RSI: 00000000000001ff RDI: 000055b4d299dc20
Sep 16 08:02:54 proxmox kernel: [1891852.363783] RBP: 0000000000000000 R08: 000055b4d297a128 R09: 0000000000000000
Sep 16 08:02:54 proxmox kernel: [1891852.363784] R10: 0000000000000008 R11: 0000000000000246 R12: 000055b4d299dc20
Sep 16 08:02:54 proxmox kernel: [1891852.363786] R13: 000055b4cfc1d138 R14: 000055b4d2bb4e20 R15: 00000000000001ff
Sep 16 08:04:55 proxmox kernel: [1891973.194733] RDX: 000055b4cdeb1a65 RSI: 00000000000001ff RDI: 000055b4d299dc20
Sep 16 08:04:55 proxmox kernel: [1891973.194735] R10: 0000000000000008 R11: 0000000000000246 R12: 000055b4d299dc20
Sep 16 08:06:56 proxmox kernel: [1892094.025703]  __schedule+0x2ca/0x880
Sep 16 08:06:56 proxmox kernel: [1892094.025718]  down_write+0x43/0x50
Sep 16 08:06:56 proxmox kernel: [1892094.025726]  do_mkdirat+0x58/0x140
Sep 16 08:06:56 proxmox kernel: [1892094.025732]  do_syscall_64+0x38/0x90
Sep 16 08:06:56 proxmox kernel: [1892094.025740] RIP: 0033:0x7ff9e591bb07
Sep 16 08:06:56 proxmox kernel: [1892094.025745] RAX: ffffffffffffffda RBX: 000055b4ce9242a0 RCX: 00007ff9e591bb07
Sep 16 08:06:56 proxmox kernel: [1892094.025748] RBP: 0000000000000000 R08: 000055b4d297a128 R09: 0000000000000000
Sep 16 08:06:56 proxmox kernel: [1892094.025750] R13: 000055b4cfc1d138 R14: 000055b4d2bb4e20 R15: 00000000000001ff
Sep 16 08:08:57 proxmox kernel: [1892214.856651] task:pvesr           state:D stack:    0 pid:2283849 ppid:2283821 flags:0x00000000
Sep 16 08:08:57 proxmox kernel: [1892214.856659]  __schedule+0x2ca/0x880
Sep 16 08:08:57 proxmox kernel: [1892214.856668]  rwsem_down_write_slowpath+0x212/0x590
Sep 16 08:08:57 proxmox kernel: [1892214.856676]  filename_create+0x7e/0x160
Sep 16 08:08:57 proxmox kernel: [1892214.856685]  __x64_sys_mkdir+0x1b/0x20
Sep 16 08:08:57 proxmox kernel: [1892214.856692]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
Sep 16 08:08:57 proxmox kernel: [1892214.856699] RSP: 002b:00007ffc5dbc0f38 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
Sep 16 08:08:57 proxmox kernel: [1892214.856703] RDX: 000055b4cdeb1a65 RSI: 00000000000001ff RDI: 000055b4d299dc20
Sep 16 08:08:57 proxmox kernel: [1892214.856706] R10: 0000000000000008 R11: 0000000000000246 R12: 000055b4d299dc20
Sep 16 08:10:58 proxmox kernel: [1892335.687760] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Sep 16 08:10:58 proxmox kernel: [1892335.687791]  __schedule+0x2ca/0x880
Sep 16 08:10:58 proxmox kernel: [1892335.687800]  rwsem_down_write_slowpath+0x212/0x590
Sep 16 08:10:58 proxmox kernel: [1892335.687809]  filename_create+0x7e/0x160
Sep 16 08:10:58 proxmox kernel: [1892335.687818]  __x64_sys_mkdir+0x1b/0x20
Sep 16 08:10:58 proxmox kernel: [1892335.687825]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
Sep 16 08:10:58 proxmox kernel: [1892335.687831] RSP: 002b:00007ffc5dbc0f38 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
Sep 16 08:10:58 proxmox kernel: [1892335.687836] RDX: 000055b4cdeb1a65 RSI: 00000000000001ff RDI: 000055b4d299dc20
Sep 16 08:10:58 proxmox kernel: [1892335.687838] R10: 0000000000000008 R11: 0000000000000246 R12: 000055b4d299dc20
Sep 16 08:12:58 proxmox kernel: [1892456.518705] RAX: ffffffffffffffda RBX: 000055b4ce9242a0 RCX: 00007ff9e591bb07
Sep 16 08:12:58 proxmox kernel: [1892456.518709] R10: 0000000000000008 R11: 0000000000000246 R12: 000055b4d299dc20
Sep 16 08:14:59 proxmox kernel: [1892577.349568]       Tainted: P           O      5.11.22-3-pve #1
Sep 16 08:14:59 proxmox kernel: [1892577.349609] task:pvesr           state:D stack:    0 pid:2283849 ppid:2283821 flags:0x00000000
Sep 16 08:14:59 proxmox kernel: [1892577.349617]  __schedule+0x2ca/0x880
Sep 16 08:14:59 proxmox kernel: [1892577.349625]  rwsem_down_write_slowpath+0x212/0x590
Sep 16 08:14:59 proxmox kernel: [1892577.349634]  filename_create+0x7e/0x160
Sep 16 08:14:59 proxmox kernel: [1892577.349642]  __x64_sys_mkdir+0x1b/0x20
Sep 16 08:14:59 proxmox kernel: [1892577.349649]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
Sep 16 08:14:59 proxmox kernel: [1892577.349655] RSP: 002b:00007ffc5dbc0f38 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
Sep 16 08:14:59 proxmox kernel: [1892577.349659] RDX: 000055b4cdeb1a65 RSI: 00000000000001ff RDI: 000055b4d299dc20
Sep 16 08:14:59 proxmox kernel: [1892577.349662] R10: 0000000000000008 R11: 0000000000000246 R12: 000055b4d299dc20
Sep 16 08:17:00 proxmox kernel: [1892698.180514] INFO: task pvesr:2283849 blocked for more than 966 seconds.
Sep 16 08:17:00 proxmox kernel: [1892698.180543]       Tainted: P           O      5.11.22-3-pve #1
Sep 16 08:17:00 proxmox kernel: [1892698.180561] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Sep 16 08:17:00 proxmox kernel: [1892698.180584] task:pvesr           state:D stack:    0 pid:2283849 ppid:2283821 flags:0x00000000
Sep 16 08:17:00 proxmox kernel: [1892698.180588] Call Trace:
Sep 16 08:17:00 proxmox kernel: [1892698.180592]  __schedule+0x2ca/0x880
Sep 16 08:17:00 proxmox kernel: [1892698.180598]  schedule+0x4f/0xc0
Sep 16 08:17:00 proxmox kernel: [1892698.180600]  rwsem_down_write_slowpath+0x212/0x590
Sep 16 08:17:00 proxmox kernel: [1892698.180607]  down_write+0x43/0x50
Sep 16 08:17:00 proxmox kernel: [1892698.180609]  filename_create+0x7e/0x160
Sep 16 08:17:00 proxmox kernel: [1892698.180615]  do_mkdirat+0x58/0x140
Sep 16 08:17:00 proxmox kernel: [1892698.180618]  __x64_sys_mkdir+0x1b/0x20
Sep 16 08:17:00 proxmox kernel: [1892698.180621]  do_syscall_64+0x38/0x90
Sep 16 08:17:00 proxmox kernel: [1892698.180625]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
Sep 16 08:17:00 proxmox kernel: [1892698.180629] RIP: 0033:0x7ff9e591bb07
Sep 16 08:17:00 proxmox kernel: [1892698.180631] RSP: 002b:00007ffc5dbc0f38 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
Sep 16 08:17:00 proxmox kernel: [1892698.180634] RAX: ffffffffffffffda RBX: 000055b4ce9242a0 RCX: 00007ff9e591bb07
Sep 16 08:17:00 proxmox kernel: [1892698.180636] RDX: 000055b4cdeb1a65 RSI: 00000000000001ff RDI: 000055b4d299dc20
Sep 16 08:17:00 proxmox kernel: [1892698.180637] RBP: 0000000000000000 R08: 000055b4d297a128 R09: 0000000000000000
Sep 16 08:17:00 proxmox kernel: [1892698.180639] R13: 000055b4cfc1d138 R14: 000055b4d2bb4e20 R15: 00000000000001ff
Sep 16 08:19:01 proxmox kernel: [1892819.011391]       Tainted: P           O      5.11.22-3-pve #1
Sep 16 08:19:01 proxmox kernel: [1892819.011439] Call Trace:
Sep 16 08:19:01 proxmox kernel: [1892819.011449]  schedule+0x4f/0xc0
Sep 16 08:19:01 proxmox kernel: [1892819.011458]  down_write+0x43/0x50
Sep 16 08:19:01 proxmox kernel: [1892819.011466]  do_mkdirat+0x58/0x140
Sep 16 08:19:01 proxmox kernel: [1892819.011473]  do_syscall_64+0x38/0x90
Sep 16 08:19:01 proxmox kernel: [1892819.011481] RIP: 0033:0x7ff9e591bb07
Sep 16 08:19:01 proxmox kernel: [1892819.011486] RAX: ffffffffffffffda RBX: 000055b4ce9242a0 RCX: 00007ff9e591bb07
Sep 16 08:19:01 proxmox kernel: [1892819.011488] RBP: 0000000000000000 R08: 000055b4d297a128 R09: 0000000000000000
Sep 16 08:19:01 proxmox kernel: [1892819.011491] R13: 000055b4cfc1d138 R14: 000055b4d2bb4e20 R15: 00000000000001ff
Sep 16 08:21:02 proxmox kernel: [1892939.842305] INFO: task pvesr:2283849 blocked for more than 1208 seconds.
Sep 16 08:21:02 proxmox kernel: [1892939.842336]       Tainted: P           O      5.11.22-3-pve #1
Sep 16 08:21:02 proxmox kernel: [1892939.842355] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Sep 16 08:21:02 proxmox kernel: [1892939.842379] task:pvesr           state:D stack:    0 pid:2283849 ppid:2283821 flags:0x00000000
Sep 16 08:21:02 proxmox kernel: [1892939.842383] Call Trace:
Sep 16 08:21:02 proxmox kernel: [1892939.842386]  __schedule+0x2ca/0x880
Sep 16 08:21:02 proxmox kernel: [1892939.842392]  schedule+0x4f/0xc0
Sep 16 08:21:02 proxmox kernel: [1892939.842395]  rwsem_down_write_slowpath+0x212/0x590
Sep 16 08:21:02 proxmox kernel: [1892939.842401]  down_write+0x43/0x50
Sep 16 08:21:02 proxmox kernel: [1892939.842403]  filename_create+0x7e/0x160
Sep 16 08:21:02 proxmox kernel: [1892939.842408]  do_mkdirat+0x58/0x140
Sep 16 08:21:02 proxmox kernel: [1892939.842412]  __x64_sys_mkdir+0x1b/0x20
Sep 16 08:21:02 proxmox kernel: [1892939.842415]  do_syscall_64+0x38/0x90
Sep 16 08:21:02 proxmox kernel: [1892939.842418]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
Sep 16 08:21:02 proxmox kernel: [1892939.842423] RIP: 0033:0x7ff9e591bb07
Sep 16 08:21:02 proxmox kernel: [1892939.842428] RAX: ffffffffffffffda RBX: 000055b4ce9242a0 RCX: 00007ff9e591bb07
Sep 16 08:21:02 proxmox kernel: [1892939.842429] RDX: 000055b4cdeb1a65 RSI: 00000000000001ff RDI: 000055b4d299dc20
Sep 16 08:21:02 proxmox kernel: [1892939.842432] R10: 0000000000000008 R11: 0000000000000246 R12: 000055b4d299dc20

Also, I attach the output of ps command.
 

Attachments

  • ps_auxwf_output.txt
    74.3 KB · Views: 1

cocoboig

Member
May 25, 2020
11
3
8
51
I've updated the server with last updates and I rebooted it and pvesr hangs agains, but now, it in less of 1 day.

New /var/log/kern.log file:
Code:
Sep 18 08:04:52 proxmox kernel: [31658.991703] INFO: task pvesr:3511155 blocked for more than 241 seconds.
Sep 18 08:04:52 proxmox kernel: [31658.991788]       Tainted: P           O      5.11.22-4-pve #1
Sep 18 08:04:52 proxmox kernel: [31658.991919] task:pvesr           state:D stack:    0 pid:3511155 ppid:3511111 flags:0x00000000
Sep 18 08:04:52 proxmox kernel: [31658.991938]  __schedule+0x2ca/0x880
Sep 18 08:04:52 proxmox kernel: [31658.991960]  rwsem_down_write_slowpath+0x212/0x590
Sep 18 08:04:52 proxmox kernel: [31658.991989]  filename_create+0x7e/0x160
Sep 18 08:04:52 proxmox kernel: [31658.991998]  __x64_sys_mkdir+0x1b/0x20
Sep 18 08:04:52 proxmox kernel: [31658.992004]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
Sep 18 08:04:52 proxmox kernel: [31658.992011] RSP: 002b:00007ffcde93f3a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
Sep 18 08:04:52 proxmox kernel: [31658.992016] RDX: 000055e5669b1a65 RSI: 00000000000001ff RDI: 000055e56c81b820
Sep 18 08:04:52 proxmox kernel: [31658.992018] R10: 0000000000000008 R11: 0000000000000246 R12: 000055e56c81b820
Sep 18 08:08:54 proxmox kernel: [31900.654004]       Tainted: P           O      5.11.22-4-pve #1
Sep 18 08:08:54 proxmox kernel: [31900.654047] task:pvesr           state:D stack:    0 pid:3511155 ppid:3511111 flags:0x00000000
Sep 18 08:08:54 proxmox kernel: [31900.654054]  __schedule+0x2ca/0x880
Sep 18 08:08:54 proxmox kernel: [31900.654063]  rwsem_down_write_slowpath+0x212/0x590
Sep 18 08:08:54 proxmox kernel: [31900.654072]  filename_create+0x7e/0x160
Sep 18 08:08:54 proxmox kernel: [31900.654080]  __x64_sys_mkdir+0x1b/0x20
Sep 18 08:08:54 proxmox kernel: [31900.654085]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
Sep 18 08:08:54 proxmox kernel: [31900.654092] RSP: 002b:00007ffcde93f3a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
Sep 18 08:08:54 proxmox kernel: [31900.654096] RDX: 000055e5669b1a65 RSI: 00000000000001ff RDI: 000055e56c81b820
Sep 18 08:08:54 proxmox kernel: [31900.654099] R10: 0000000000000008 R11: 0000000000000246 R12: 000055e56c81b820
Sep 18 08:10:55 proxmox kernel: [32021.485231] INFO: task pvesr:3511155 blocked for more than 604 seconds.
Sep 18 08:10:55 proxmox kernel: [32021.485281] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Sep 18 08:10:55 proxmox kernel: [32021.485305] task:pvesr           state:D stack:    0 pid:3511155 ppid:3511111 flags:0x00000000
Sep 18 08:10:55 proxmox kernel: [32021.485313]  __schedule+0x2ca/0x880
Sep 18 08:10:55 proxmox kernel: [32021.485322]  rwsem_down_write_slowpath+0x212/0x590
Sep 18 08:10:55 proxmox kernel: [32021.485331]  filename_create+0x7e/0x160
Sep 18 08:10:55 proxmox kernel: [32021.485341]  __x64_sys_mkdir+0x1b/0x20
Sep 18 08:10:55 proxmox kernel: [32021.485346]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
Sep 18 08:10:55 proxmox kernel: [32021.485352] RSP: 002b:00007ffcde93f3a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
Sep 18 08:10:55 proxmox kernel: [32021.485357] RDX: 000055e5669b1a65 RSI: 00000000000001ff RDI: 000055e56c81b820
Sep 18 08:10:55 proxmox kernel: [32021.485360] R10: 0000000000000008 R11: 0000000000000246 R12: 000055e56c81b820
Sep 18 08:12:56 proxmox kernel: [32142.316458]  down_write+0x43/0x50
Sep 18 08:12:56 proxmox kernel: [32142.316486]  __x64_sys_mkdir+0x1b/0x20
Sep 18 08:12:56 proxmox kernel: [32142.316491]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
Sep 18 08:12:56 proxmox kernel: [32142.316498] RSP: 002b:00007ffcde93f3a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
Sep 18 08:12:56 proxmox kernel: [32142.316502] RDX: 000055e5669b1a65 RSI: 00000000000001ff RDI: 000055e56c81b820
Sep 18 08:12:56 proxmox kernel: [32142.316504] R10: 0000000000000008 R11: 0000000000000246 R12: 000055e56c81b820
Sep 18 08:14:57 proxmox kernel: [32263.147548]       Tainted: P           O      5.11.22-4-pve #1
Sep 18 08:14:57 proxmox kernel: [32263.147593] Call Trace:
Sep 18 08:14:57 proxmox kernel: [32263.147604]  schedule+0x4f/0xc0
Sep 18 08:14:57 proxmox kernel: [32263.147613]  down_write+0x43/0x50
Sep 18 08:14:57 proxmox kernel: [32263.147622]  do_mkdirat+0x58/0x140
Sep 18 08:14:57 proxmox kernel: [32263.147627]  do_syscall_64+0x38/0x90
Sep 18 08:14:57 proxmox kernel: [32263.147635] RIP: 0033:0x7f5c8289fb07
Sep 18 08:14:57 proxmox kernel: [32263.147640] RAX: ffffffffffffffda RBX: 000055e56879a2a0 RCX: 00007f5c8289fb07
Sep 18 08:14:57 proxmox kernel: [32263.147643] RBP: 0000000000000000 R08: 000055e56c8100f8 R09: 0000000000000000
Sep 18 08:14:57 proxmox kernel: [32263.147646] R13: 000055e569a938f8 R14: 000055e56ca38ed8 R15: 00000000000001ff
Sep 18 08:16:57 proxmox kernel: [32383.978961] RAX: ffffffffffffffda RBX: 000055e56879a2a0 RCX: 00007f5c8289fb07
Sep 18 08:16:57 proxmox kernel: [32383.978965] R10: 0000000000000008 R11: 0000000000000246 R12: 000055e56c81b820
Sep 18 08:18:58 proxmox kernel: [32504.809656] INFO: task pvesr:3511155 blocked for more than 1087 seconds.
Sep 18 08:18:58 proxmox kernel: [32504.809691]       Tainted: P           O      5.11.22-4-pve #1
Sep 18 08:18:58 proxmox kernel: [32504.809711] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Sep 18 08:18:58 proxmox kernel: [32504.809735] task:pvesr           state:D stack:    0 pid:3511155 ppid:3511111 flags:0x00000000
Sep 18 08:18:58 proxmox kernel: [32504.809743]  __schedule+0x2ca/0x880
Sep 18 08:18:58 proxmox kernel: [32504.809751]  schedule+0x4f/0xc0
Sep 18 08:18:58 proxmox kernel: [32504.809761]  down_write+0x43/0x50
Sep 18 08:18:58 proxmox kernel: [32504.809770]  do_mkdirat+0x58/0x140
Sep 18 08:18:58 proxmox kernel: [32504.809775]  do_syscall_64+0x38/0x90
Sep 18 08:18:58 proxmox kernel: [32504.809784] RIP: 0033:0x7f5c8289fb07
Sep 18 08:18:58 proxmox kernel: [32504.809789] RAX: ffffffffffffffda RBX: 000055e56879a2a0 RCX: 00007f5c8289fb07
Sep 18 08:18:58 proxmox kernel: [32504.809792] RBP: 0000000000000000 R08: 000055e56c8100f8 R09: 0000000000000000
Sep 18 08:18:58 proxmox kernel: [32504.809795] R13: 000055e569a938f8 R14: 000055e56ca38ed8 R15: 00000000000001ff
Sep 18 08:20:59 proxmox kernel: [32625.640754] INFO: task pvesr:3511155 blocked for more than 1208 seconds.
Sep 18 08:20:59 proxmox kernel: [32625.640789]       Tainted: P           O      5.11.22-4-pve #1
Sep 18 08:20:59 proxmox kernel: [32625.640809] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Sep 18 08:20:59 proxmox kernel: [32625.640832] task:pvesr           state:D stack:    0 pid:3511155 ppid:3511111 flags:0x00000000
Sep 18 08:20:59 proxmox kernel: [32625.640837] Call Trace:
Sep 18 08:20:59 proxmox kernel: [32625.640841]  __schedule+0x2ca/0x880
Sep 18 08:20:59 proxmox kernel: [32625.640847]  schedule+0x4f/0xc0
Sep 18 08:20:59 proxmox kernel: [32625.640850]  rwsem_down_write_slowpath+0x212/0x590
Sep 18 08:20:59 proxmox kernel: [32625.640857]  down_write+0x43/0x50
Sep 18 08:20:59 proxmox kernel: [32625.640859]  filename_create+0x7e/0x160
Sep 18 08:20:59 proxmox kernel: [32625.640865]  do_mkdirat+0x58/0x140
Sep 18 08:20:59 proxmox kernel: [32625.640869]  __x64_sys_mkdir+0x1b/0x20
Sep 18 08:20:59 proxmox kernel: [32625.640870]  do_syscall_64+0x38/0x90
Sep 18 08:20:59 proxmox kernel: [32625.640874]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
Sep 18 08:20:59 proxmox kernel: [32625.640879] RIP: 0033:0x7f5c8289fb07
Sep 18 08:20:59 proxmox kernel: [32625.640881] RSP: 002b:00007ffcde93f3a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
Sep 18 08:20:59 proxmox kernel: [32625.640885] RAX: ffffffffffffffda RBX: 000055e56879a2a0 RCX: 00007f5c8289fb07
Sep 18 08:20:59 proxmox kernel: [32625.640886] RDX: 000055e5669b1a65 RSI: 00000000000001ff RDI: 000055e56c81b820
Sep 18 08:20:59 proxmox kernel: [32625.640888] RBP: 0000000000000000 R08: 000055e56c8100f8 R09: 0000000000000000
Sep 18 08:20:59 proxmox kernel: [32625.640889] R10: 0000000000000008 R11: 0000000000000246 R12: 000055e56c81b820
Sep 18 08:20:59 proxmox kernel: [32625.640890] R13: 000055e569a938f8 R14: 000055e56ca38ed8 R15: 00000000000001ff

Also, I attach the output of ps command.
 

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