Super slow, timeout, and VM stuck while backing up, after updated to PVE 9.1.1 and PBS 4.0.20

Chris said:
@all, please share your filesystem backing the datastore, the raid level and output of zpool get all <pool> as well as zfs get all <dataset> in case this is located on ZFS, thanks!
Click to expand...
Hi Chris,
attached you'll find my ZFS pool informations.

Yesterday evening I've done some tests in my home lab where I have a virtualized PBS and it's working good even with the kernel 6.17. I am therefore quite convinced that the problem lies in the kernel module that manages the ZFS filesystem.

Best regards!
 

Attachments

Hello everyone,
In my case, using kernel 6.14.11-4-pve in PBS (while i left the 6.17.2-1-pve on the PVE nodes) did not completely resolve the issue.
Although it looks better than yesterday, there was still a small hitch at the last 1% of the backup.
My datastore on PBS is an ext4 volume.

Code: 
100: 2025-11-27 02:00:09 INFO: Starting Backup of VM 100 (qemu)
100: 2025-11-27 02:00:09 INFO: status = running
100: 2025-11-27 02:00:09 INFO: VM Name: HeracleosLin01
100: 2025-11-27 02:00:09 INFO: include disk 'scsi0' 'CephRBD:vm-100-disk-0' 60G
100: 2025-11-27 02:00:09 INFO: backup mode: snapshot
100: 2025-11-27 02:00:09 INFO: ionice priority: 7
100: 2025-11-27 02:00:09 INFO: creating Proxmox Backup Server archive 'vm/100/2025-11-27T08:00:09Z'
100: 2025-11-27 02:00:09 INFO: issuing guest-agent 'fs-freeze' command
100: 2025-11-27 02:00:11 INFO: issuing guest-agent 'fs-thaw' command
100: 2025-11-27 02:00:12 INFO: started backup task 'e9ae60e2-b1e4-4cb3-b5e9-de342fec1bff'
100: 2025-11-27 02:00:12 INFO: resuming VM again
100: 2025-11-27 02:00:12 INFO: scsi0: dirty-bitmap status: OK (5.5 GiB of 60.0 GiB dirty)
100: 2025-11-27 02:00:12 INFO: using fast incremental mode (dirty-bitmap), 5.5 GiB dirty of 60.0 GiB total
100: 2025-11-27 02:00:15 INFO:   4% (232.0 MiB of 5.5 GiB) in 3s, read: 77.3 MiB/s, write: 64.0 MiB/s
100: 2025-11-27 02:00:18 INFO:   8% (472.0 MiB of 5.5 GiB) in 6s, read: 80.0 MiB/s, write: 53.3 MiB/s
100: 2025-11-27 02:00:21 INFO:  12% (712.0 MiB of 5.5 GiB) in 9s, read: 80.0 MiB/s, write: 48.0 MiB/s
100: 2025-11-27 02:00:24 INFO:  16% (940.0 MiB of 5.5 GiB) in 12s, read: 76.0 MiB/s, write: 72.0 MiB/s
100: 2025-11-27 02:00:27 INFO:  20% (1.1 GiB of 5.5 GiB) in 15s, read: 70.7 MiB/s, write: 70.7 MiB/s
100: 2025-11-27 02:00:30 INFO:  24% (1.3 GiB of 5.5 GiB) in 18s, read: 65.3 MiB/s, write: 61.3 MiB/s
100: 2025-11-27 02:00:33 INFO:  28% (1.6 GiB of 5.5 GiB) in 21s, read: 90.7 MiB/s, write: 53.3 MiB/s
100: 2025-11-27 02:00:36 INFO:  32% (1.8 GiB of 5.5 GiB) in 24s, read: 74.7 MiB/s, write: 53.3 MiB/s
100: 2025-11-27 02:00:39 INFO:  37% (2.1 GiB of 5.5 GiB) in 27s, read: 89.3 MiB/s, write: 42.7 MiB/s
100: 2025-11-27 02:00:42 INFO:  41% (2.3 GiB of 5.5 GiB) in 30s, read: 80.0 MiB/s, write: 58.7 MiB/s
100: 2025-11-27 02:00:45 INFO:  47% (2.6 GiB of 5.5 GiB) in 33s, read: 98.7 MiB/s, write: 92.0 MiB/s
100: 2025-11-27 02:00:48 INFO:  51% (2.8 GiB of 5.5 GiB) in 36s, read: 77.3 MiB/s, write: 74.7 MiB/s
100: 2025-11-27 02:00:51 INFO:  54% (3.0 GiB of 5.5 GiB) in 39s, read: 69.3 MiB/s, write: 62.7 MiB/s
100: 2025-11-27 02:00:54 INFO:  59% (3.3 GiB of 5.5 GiB) in 42s, read: 85.3 MiB/s, write: 58.7 MiB/s
100: 2025-11-27 02:00:57 INFO:  64% (3.5 GiB of 5.5 GiB) in 45s, read: 84.0 MiB/s, write: 57.3 MiB/s
100: 2025-11-27 02:01:00 INFO:  68% (3.7 GiB of 5.5 GiB) in 48s, read: 80.0 MiB/s, write: 65.3 MiB/s
100: 2025-11-27 02:01:03 INFO:  71% (3.9 GiB of 5.5 GiB) in 51s, read: 68.0 MiB/s, write: 66.7 MiB/s
100: 2025-11-27 02:01:06 INFO:  75% (4.1 GiB of 5.5 GiB) in 54s, read: 60.0 MiB/s, write: 60.0 MiB/s
100: 2025-11-27 02:01:09 INFO:  78% (4.3 GiB of 5.5 GiB) in 57s, read: 70.7 MiB/s, write: 66.7 MiB/s
100: 2025-11-27 02:01:12 INFO:  83% (4.6 GiB of 5.5 GiB) in 1m, read: 81.3 MiB/s, write: 46.7 MiB/s
100: 2025-11-27 02:01:15 INFO:  87% (4.8 GiB of 5.5 GiB) in 1m 3s, read: 77.3 MiB/s, write: 48.0 MiB/s
100: 2025-11-27 02:01:18 INFO:  91% (5.0 GiB of 5.5 GiB) in 1m 6s, read: 80.0 MiB/s, write: 41.3 MiB/s
100: 2025-11-27 02:01:21 INFO:  95% (5.2 GiB of 5.5 GiB) in 1m 9s, read: 73.3 MiB/s, write: 61.3 MiB/s
100: 2025-11-27 02:01:24 INFO:  99% (5.5 GiB of 5.5 GiB) in 1m 12s, read: 76.0 MiB/s, write: 69.3 MiB/s
100: 2025-11-27 02:16:47 INFO: 100% (5.5 GiB of 5.5 GiB) in 16m 35s, read: 22.2 KiB/s, write: 17.8 KiB/s
100: 2025-11-27 02:16:48 INFO: backup was done incrementally, reused 55.74 GiB (92%)
100: 2025-11-27 02:16:48 INFO: transferred 5.48 GiB in 996 seconds (5.6 MiB/s)
100: 2025-11-27 02:16:48 INFO: adding notes to backup
100: 2025-11-27 02:16:49 INFO: Finished Backup of VM 100 (00:16:40)
 
Last edited:
Chris said:
@all, please share your filesystem backing the datastore, the raid level and output of zpool get all <pool> as well as zfs get all <dataset> in case this is located on ZFS, thanks!
Click to expand...

here you go:

root@pbs:~# zpool get all Backup
NAME PROPERTY VALUE SOURCE
Backup size 97.8T -
Backup capacity 60% -
Backup altroot - default
Backup health ONLINE -
Backup guid 252936707469751708 -
Backup version - default
Backup bootfs - default
Backup delegation on default
Backup autoreplace off default
Backup cachefile none local
Backup failmode wait default
Backup listsnapshots off default
Backup autoexpand off default
Backup dedupratio 1.00x -
Backup free 38.5T -
Backup allocated 59.3T -
Backup readonly off -
Backup ashift 12 local
Backup comment - default
Backup expandsize - -
Backup freeing 0 -
Backup fragmentation 13% -
Backup leaked 0 -
Backup multihost off default
Backup checkpoint - -
Backup load_guid 10458506105408385786 -
Backup autotrim off default
Backup compatibility off default
Backup bcloneused 0 -
Backup bclonesaved 0 -
Backup bcloneratio 1.00x -
Backup dedup_table_size 0 -
Backup dedup_table_quota auto default
Backup last_scrubbed_txg 8070818 -
Backup feature@async_destroy enabled local
Backup feature@empty_bpobj enabled local
Backup feature@lz4_compress active local
Backup feature@multi_vdev_crash_dump enabled local
Backup feature@spacemap_histogram active local
Backup feature@enabled_txg active local
Backup feature@hole_birth active local
Backup feature@extensible_dataset active local
Backup feature@embedded_data active local
Backup feature@bookmarks enabled local
Backup feature@filesystem_limits enabled local
Backup feature@large_blocks enabled local
Backup feature@large_dnode enabled local
Backup feature@sha512 enabled local
Backup feature@skein enabled local
Backup feature@edonr enabled local
Backup feature@userobj_accounting active local
Backup feature@encryption enabled local
Backup feature@project_quota active local
Backup feature@device_removal enabled local
Backup feature@obsolete_counts enabled local
Backup feature@zpool_checkpoint enabled local
Backup feature@spacemap_v2 active local
Backup feature@allocation_classes enabled local
Backup feature@resilver_defer enabled local
Backup feature@bookmark_v2 enabled local
Backup feature@redaction_bookmarks enabled local
Backup feature@redacted_datasets enabled local
Backup feature@bookmark_written enabled local
Backup feature@log_spacemap active local
Backup feature@livelist enabled local
Backup feature@device_rebuild enabled local
Backup feature@zstd_compress enabled local
Backup feature@draid enabled local
Backup feature@zilsaxattr active local
Backup feature@head_errlog active local
Backup feature@blake3 enabled local
Backup feature@block_cloning enabled local
Backup feature@vdev_zaps_v2 active local
Backup feature@redaction_list_spill enabled local
Backup feature@raidz_expansion enabled local
Backup feature@fast_dedup enabled local
Backup feature@longname enabled local
Backup feature@large_microzap enabled local


root@pbs:~# zfs get all Backup
NAME PROPERTY VALUE SOURCE
Backup type filesystem -
Backup creation Mon Sep 30 17:01 2024 -
Backup used 49.9T -
Backup available 32.3T -
Backup referenced 49.9T -
Backup compressratio 1.02x -
Backup mounted yes -
Backup quota none default
Backup reservation none default
Backup recordsize 128K default
Backup mountpoint /mnt/datastore/Backup local
Backup sharenfs off default
Backup checksum on default
Backup compression on local
Backup atime on default
Backup devices on default
Backup exec on default
Backup setuid on default
Backup readonly off default
Backup zoned off default
Backup snapdir hidden default
Backup aclmode discard default
Backup aclinherit restricted default
Backup createtxg 1 -
Backup canmount on default
Backup xattr on default
Backup copies 1 default
Backup version 5 -
Backup utf8only off -
Backup normalization none -
Backup casesensitivity sensitive -
Backup vscan off default
Backup nbmand off default
Backup sharesmb off default
Backup refquota none default
Backup refreservation none default
Backup guid 15647157512180787916 -
Backup primarycache all default
Backup secondarycache all default
Backup usedbysnapshots 0B -
Backup usedbydataset 49.9T -
Backup usedbychildren 3.43G -
Backup usedbyrefreservation 0B -
Backup logbias latency default
Backup objsetid 54 -
Backup dedup off default
Backup mlslabel none default
Backup sync standard default
Backup dnodesize legacy default
Backup refcompressratio 1.02x -
Backup written 49.9T -
Backup logicalused 51.1T -
Backup logicalreferenced 51.1T -
Backup volmode default default
Backup filesystem_limit none default
Backup snapshot_limit none default
Backup filesystem_count none default
Backup snapshot_count none default
Backup snapdev hidden default
Backup acltype off default
Backup context none default
Backup fscontext none default
Backup defcontext none default
Backup rootcontext none default
Backup relatime on local
Backup redundant_metadata all default
Backup overlay on default
Backup encryption off default
Backup keylocation none default
Backup keyformat none default
Backup pbkdf2iters 0 default
Backup special_small_blocks 0 default
Backup prefetch all default
Backup direct standard default
Backup longname off default
 
Chris said:
@all, please share your filesystem backing the datastore, the raid level and output of zpool get all <pool> as well as zfs get all <dataset> in case this is located on ZFS, thanks!
Click to expand...
Here's our HDD pool...
Code: 
+ zpool status data
  pool: data
 state: ONLINE
  scan: scrub repaired 0B in 02:43:21 with 0 errors on Thu Nov 27 14:08:46 2025
config:

    NAME                        STATE     READ WRITE CKSUM
    data                        ONLINE       0     0     0
      mirror-0                  ONLINE       0     0     0
        wwn-0x5000c5009444e6cb  ONLINE       0     0     0
        wwn-0x5000c500943cc3e3  ONLINE       0     0     0
      mirror-1                  ONLINE       0     0     0
        wwn-0x5000c5007e20c1e3  ONLINE       0     0     0
        wwn-0x5000c5007e1fcd43  ONLINE       0     0     0
      mirror-2                  ONLINE       0     0     0
        wwn-0x5000c5007e20a537  ONLINE       0     0     0
        wwn-0x5000c5007e1f2d33  ONLINE       0     0     0
      mirror-3                  ONLINE       0     0     0
        wwn-0x5000c5007e1f5e67  ONLINE       0     0     0
        wwn-0x5000c5007e1f760f  ONLINE       0     0     0
      mirror-4                  ONLINE       0     0     0
        wwn-0x5000c5007e1fac6b  ONLINE       0     0     0
        wwn-0x5000c5007e1f77bb  ONLINE       0     0     0

errors: No known data errors
+ zpool get all data
NAME  PROPERTY                       VALUE                          SOURCE
data  size                           5.43T                          -
data  capacity                       71%                            -
data  altroot                        -                              default
data  health                         ONLINE                         -
data  guid                           4312059254676486058            -
data  version                        -                              default
data  bootfs                         -                              default
data  delegation                     on                             default
data  autoreplace                    off                            default
data  cachefile                      none                           local
data  failmode                       wait                           default
data  listsnapshots                  off                            default
data  autoexpand                     off                            default
data  dedupratio                     1.00x                          -
data  free                           1.56T                          -
data  allocated                      3.87T                          -
data  readonly                       off                            -
data  ashift                         12                             local
data  comment                        -                              default
data  expandsize                     -                              -
data  freeing                        0                              -
data  fragmentation                  54%                            -
data  leaked                         0                              -
data  multihost                      off                            default
data  checkpoint                     -                              -
data  load_guid                      644286053646833947             -
data  autotrim                       off                            default
data  compatibility                  off                            default
data  bcloneused                     0                              -
data  bclonesaved                    0                              -
data  bcloneratio                    1.00x                          -
data  dedup_table_size               0                              -
data  dedup_table_quota              auto                           default
data  last_scrubbed_txg              7289701                        -
data  feature@async_destroy          enabled                        local
data  feature@empty_bpobj            active                         local
data  feature@lz4_compress           active                         local
data  feature@multi_vdev_crash_dump  enabled                        local
data  feature@spacemap_histogram     active                         local
data  feature@enabled_txg            active                         local
data  feature@hole_birth             active                         local
data  feature@extensible_dataset     active                         local
data  feature@embedded_data          active                         local
data  feature@bookmarks              enabled                        local
data  feature@filesystem_limits      enabled                        local
data  feature@large_blocks           enabled                        local
data  feature@large_dnode            enabled                        local
data  feature@sha512                 enabled                        local
data  feature@skein                  enabled                        local
data  feature@edonr                  enabled                        local
data  feature@userobj_accounting     active                         local
data  feature@encryption             enabled                        local
data  feature@project_quota          active                         local
data  feature@device_removal         enabled                        local
data  feature@obsolete_counts        enabled                        local
data  feature@zpool_checkpoint       enabled                        local
data  feature@spacemap_v2            active                         local
data  feature@allocation_classes     enabled                        local
data  feature@resilver_defer         enabled                        local
data  feature@bookmark_v2            enabled                        local
data  feature@redaction_bookmarks    enabled                        local
data  feature@redacted_datasets      enabled                        local
data  feature@bookmark_written       enabled                        local
data  feature@log_spacemap           active                         local
data  feature@livelist               enabled                        local
data  feature@device_rebuild         enabled                        local
data  feature@zstd_compress          enabled                        local
data  feature@draid                  enabled                        local
data  feature@zilsaxattr             active                         local
data  feature@head_errlog            active                         local
data  feature@blake3                 enabled                        local
data  feature@block_cloning          enabled                        local
data  feature@vdev_zaps_v2           active                         local
data  feature@redaction_list_spill   enabled                        local
data  feature@raidz_expansion        enabled                        local
data  feature@fast_dedup             enabled                        local
data  feature@longname               enabled                        local
data  feature@large_microzap         enabled                        local
+ zfs list -r data
NAME              USED  AVAIL  REFER  MOUNTPOINT
data             4.87T   446G    96K  /data
data/pbs         3.87T   446G    96K  /data/pbs
data/pbs/store1  3.87T   446G  3.87T  /data/pbs/store1
data/pve          304K   446G   112K  /data/pve
data/pve/dir       96K   446G    96K  /data/pve/dir
data/pve/pool      96K   446G    96K  /data/pve/pool
data/reserved       1T  1.44T    96K  none
+ zfs get all data/pbs/store1
NAME             PROPERTY              VALUE                  SOURCE
data/pbs/store1  type                  filesystem             -
data/pbs/store1  creation              Tue Oct 15  8:58 2024  -
data/pbs/store1  used                  3.87T                  -
data/pbs/store1  available             446G                   -
data/pbs/store1  referenced            3.87T                  -
data/pbs/store1  compressratio         1.03x                  -
data/pbs/store1  mounted               yes                    -
data/pbs/store1  quota                 none                   default
data/pbs/store1  reservation           none                   default
data/pbs/store1  recordsize            128K                   default
data/pbs/store1  mountpoint            /data/pbs/store1       default
data/pbs/store1  sharenfs              off                    default
data/pbs/store1  checksum              on                     default
data/pbs/store1  compression           on                     default
data/pbs/store1  atime                 on                     default
data/pbs/store1  devices               on                     default
data/pbs/store1  exec                  on                     default
data/pbs/store1  setuid                on                     default
data/pbs/store1  readonly              off                    default
data/pbs/store1  zoned                 off                    default
data/pbs/store1  snapdir               hidden                 default
data/pbs/store1  aclmode               discard                default
data/pbs/store1  aclinherit            restricted             default
data/pbs/store1  createtxg             422139                 -
data/pbs/store1  canmount              on                     default
data/pbs/store1  xattr                 on                     default
data/pbs/store1  copies                1                      default
data/pbs/store1  version               5                      -
data/pbs/store1  utf8only              off                    -
data/pbs/store1  normalization         none                   -
data/pbs/store1  casesensitivity       sensitive              -
data/pbs/store1  vscan                 off                    default
data/pbs/store1  nbmand                off                    default
data/pbs/store1  sharesmb              off                    default
data/pbs/store1  refquota              none                   default
data/pbs/store1  refreservation        none                   default
data/pbs/store1  guid                  16674259064858430927   -
data/pbs/store1  primarycache          all                    default
data/pbs/store1  secondarycache        all                    default
data/pbs/store1  usedbysnapshots       0B                     -
data/pbs/store1  usedbydataset         3.87T                  -
data/pbs/store1  usedbychildren        0B                     -
data/pbs/store1  usedbyrefreservation  0B                     -
data/pbs/store1  logbias               latency                default
data/pbs/store1  objsetid              297                    -
data/pbs/store1  dedup                 off                    default
data/pbs/store1  mlslabel              none                   default
data/pbs/store1  sync                  standard               default
data/pbs/store1  dnodesize             legacy                 default
data/pbs/store1  refcompressratio      1.03x                  -
data/pbs/store1  written               3.87T                  -
data/pbs/store1  logicalused           3.98T                  -
data/pbs/store1  logicalreferenced     3.98T                  -
data/pbs/store1  volmode               default                default
data/pbs/store1  filesystem_limit      none                   default
data/pbs/store1  snapshot_limit        none                   default
data/pbs/store1  filesystem_count      none                   default
data/pbs/store1  snapshot_count        none                   default
data/pbs/store1  snapdev               hidden                 default
data/pbs/store1  acltype               off                    default
data/pbs/store1  context               none                   default
data/pbs/store1  fscontext             none                   default
data/pbs/store1  defcontext            none                   default
data/pbs/store1  rootcontext           none                   default
data/pbs/store1  relatime              on                     default
data/pbs/store1  redundant_metadata    all                    default
data/pbs/store1  overlay               on                     default
data/pbs/store1  encryption            off                    default
data/pbs/store1  keylocation           none                   default
data/pbs/store1  keyformat             none                   default
data/pbs/store1  pbkdf2iters           0                      default
data/pbs/store1  special_small_blocks  0                      default
data/pbs/store1  prefetch              all                    default
data/pbs/store1  direct                standard               default
data/pbs/store1  longname              off                    default
 
Chris said:
@all, please share your filesystem backing the datastore, the raid level and output of zpool get all <pool> as well as zfs get all <dataset> in case this is located on ZFS, thanks!
Click to expand...
root@R3VHST-BU:~# zpool get all R3V_BU
NAME PROPERTY VALUE SOURCE
R3V_BU size 36.4T -
R3V_BU capacity 39% -
R3V_BU altroot - default
R3V_BU health ONLINE -
R3V_BU guid 14392693859936561995 -
R3V_BU version - default
R3V_BU bootfs - default
R3V_BU delegation on default
R3V_BU autoreplace off default
R3V_BU cachefile none local
R3V_BU failmode wait default
R3V_BU listsnapshots off default
R3V_BU autoexpand off default
R3V_BU dedupratio 1.00x -
R3V_BU free 21.9T -
R3V_BU allocated 14.5T -
R3V_BU readonly off -
R3V_BU ashift 12 local
R3V_BU comment - default
R3V_BU expandsize - -
R3V_BU freeing 0 -
R3V_BU fragmentation 34% -
R3V_BU leaked 0 -
R3V_BU multihost off default
R3V_BU checkpoint - -
R3V_BU load_guid 6863421886125468344 -
R3V_BU autotrim off default
R3V_BU compatibility off default
R3V_BU bcloneused 0 -
R3V_BU bclonesaved 0 -
R3V_BU bcloneratio 1.00x -
R3V_BU dedup_table_size 0 -
R3V_BU dedup_table_quota auto default
R3V_BU last_scrubbed_txg 3988244 -
R3V_BU feature@async_destroy enabled local
R3V_BU feature@empty_bpobj enabled local
R3V_BU feature@lz4_compress active local
R3V_BU feature@multi_vdev_crash_dump enabled local
R3V_BU feature@spacemap_histogram active local
R3V_BU feature@enabled_txg active local
R3V_BU feature@hole_birth active local
R3V_BU feature@extensible_dataset active local
R3V_BU feature@embedded_data active local
R3V_BU feature@bookmarks enabled local
R3V_BU feature@filesystem_limits enabled local
R3V_BU feature@large_blocks enabled local
R3V_BU feature@large_dnode enabled local
R3V_BU feature@sha512 enabled local
R3V_BU feature@skein enabled local
R3V_BU feature@edonr enabled local
R3V_BU feature@userobj_accounting active local
R3V_BU feature@encryption enabled local
R3V_BU feature@project_quota active local
R3V_BU feature@device_removal enabled local
R3V_BU feature@obsolete_counts enabled local
R3V_BU feature@zpool_checkpoint enabled local
R3V_BU feature@spacemap_v2 active local
R3V_BU feature@allocation_classes enabled local
R3V_BU feature@resilver_defer enabled local
R3V_BU feature@bookmark_v2 enabled local
R3V_BU feature@redaction_bookmarks enabled local
R3V_BU feature@redacted_datasets enabled local
R3V_BU feature@bookmark_written enabled local
R3V_BU feature@log_spacemap active local
R3V_BU feature@livelist enabled local
R3V_BU feature@device_rebuild enabled local
R3V_BU feature@zstd_compress enabled local
R3V_BU feature@draid enabled local
R3V_BU feature@zilsaxattr active local
R3V_BU feature@head_errlog active local
R3V_BU feature@blake3 enabled local
R3V_BU feature@block_cloning enabled local
R3V_BU feature@vdev_zaps_v2 active local
R3V_BU feature@redaction_list_spill disabled local
R3V_BU feature@raidz_expansion disabled local
R3V_BU feature@fast_dedup disabled local
R3V_BU feature@longname disabled local
R3V_BU feature@large_microzap disabled local
root@R3VHST-BU:~# zfs get all R3V_BU
NAME PROPERTY VALUE SOURCE
R3V_BU type filesystem -
R3V_BU creation Mon Mar 17 22:42 2025 -
R3V_BU used 11.6T -
R3V_BU available 17.4T -
R3V_BU referenced 11.6T -
R3V_BU compressratio 1.02x -
R3V_BU mounted yes -
R3V_BU quota none default
R3V_BU reservation none default
R3V_BU recordsize 128K default
R3V_BU mountpoint /mnt/datastore/R3V_BU local
R3V_BU sharenfs off default
R3V_BU checksum on default
R3V_BU compression on local
R3V_BU atime on default
R3V_BU devices on default
R3V_BU exec on default
R3V_BU setuid on default
R3V_BU readonly off default
R3V_BU zoned off default
R3V_BU snapdir hidden default
R3V_BU aclmode discard default
R3V_BU aclinherit restricted default
R3V_BU createtxg 1 -
R3V_BU canmount on default
R3V_BU xattr on default
R3V_BU copies 1 default
R3V_BU version 5 -
R3V_BU utf8only off -
R3V_BU normalization none -
R3V_BU casesensitivity sensitive -
R3V_BU vscan off default
R3V_BU nbmand off default
R3V_BU sharesmb off default
R3V_BU refquota none default
R3V_BU refreservation none default
R3V_BU guid 2126466021604237708 -
R3V_BU primarycache all default
R3V_BU secondarycache all default
R3V_BU usedbysnapshots 0B -
R3V_BU usedbydataset 11.6T -
R3V_BU usedbychildren 1.66G -
R3V_BU usedbyrefreservation 0B -
R3V_BU logbias latency default
R3V_BU objsetid 54 -
R3V_BU dedup off default
R3V_BU mlslabel none default
R3V_BU sync standard default
R3V_BU dnodesize legacy default
R3V_BU refcompressratio 1.02x -
R3V_BU written 11.6T -
R3V_BU logicalused 11.8T -
R3V_BU logicalreferenced 11.8T -
R3V_BU volmode default default
R3V_BU filesystem_limit none default
R3V_BU snapshot_limit none default
R3V_BU filesystem_count none default
R3V_BU snapshot_count none default
R3V_BU snapdev hidden default
R3V_BU acltype off default
R3V_BU context none default
R3V_BU fscontext none default
R3V_BU defcontext none default
R3V_BU rootcontext none default
R3V_BU relatime on local
R3V_BU redundant_metadata all default
R3V_BU overlay on default
R3V_BU encryption off default
R3V_BU keylocation none default
R3V_BU keyformat none default
R3V_BU pbkdf2iters 0 default
R3V_BU special_small_blocks 0 default
R3V_BU prefetch all default
R3V_BU direct standard default
R3V_BU longname off default
root@R3VHST-BU:~# zpool status
pool: R3V_BU
state: ONLINE
status: Some supported and requested features are not enabled on the pool.
The pool can still be used, but some features are unavailable.
action: Enable all features using 'zpool upgrade'. Once this is done,
the pool may no longer be accessible by software that does not support
the features. See zpool-features(7) for details.
scan: scrub repaired 0B in 01:38:48 with 0 errors on Sun Nov 9 02:02:49 2025
config:

NAME STATE READ WRITE CKSUM
R3V_BU ONLINE 0 0 0
raidz1-0 ONLINE 0 0 0
wwn-0x5002538f3381dd6b ONLINE 0 0 0
wwn-0x5002538f3380a19f ONLINE 0 0 0
wwn-0x5002538f3381caf6 ONLINE 0 0 0
wwn-0x5002538f3380a1a6 ONLINE 0 0 0
wwn-0x5002538f3381d695 ONLINE 0 0 0

errors: No known data errors
root@R3VHST-BU:~#
 
I registered an account today after finding out that my homelab server running Proxmox 9.01, once updated to 9.1.1, screwed up my GPU passthrough config and slowed down considerably my Moodle LXCs. After reinstalling nVidia drivers and reconfiguring my OpenWebUI LXC (a real PITA...), I also noticed that a container running Linkwarden was acting up, consuming almost 100% of the CPUs allocated to it. I didn't care about keeping any data on it so I simply removed the container. Everything works fine now and my Moodle LXCs are flying!

Just in case this helps some hobbyist out there, check yer containers for any rogues. ;-)
 
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