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Thread: Seemingly sporadic slow ZFS IO since 22.04

  1. #131
    Join Date
    Nov 2023
    Beans
    75

    Re: Seemingly sporadic slow ZFS IO since 22.04

    Finally.... restoring took quite a bit longer than the backup:

    Backup:

    Code:
    11.4TiB 24:48:24 [ 134MiB/s]
    Restore:

    Code:
    11.4TiB 31:40:01 [ 105MiB/s]
    After reassigning mount points, exporting the backup and exporting/importing the pool...

    Code:
      pool: Tank
     state: ONLINE
    config:
    
        NAME                                 STATE     READ WRITE CKSUM
        Tank                                 ONLINE       0     0     0
          raidz2-0                           ONLINE       0     0     0
            ata-ST4000DM000-1F2168_S300XXXX  ONLINE       0     0     0
            ata-ST4000DM004-2CV104_ZTT4XXXX  ONLINE       0     0     0
            ata-ST4000DM004-2CV104_ZTT4XXXX  ONLINE       0     0     0
            ata-ST4000DM000-1F2168_W300XXXX  ONLINE       0     0     0
            ata-ST4000DM000-1F2168_W300XXXX  ONLINE       0     0     0
            ata-ST4000DM000-1F2168_W300XXXX  ONLINE       0     0     0
            ata-ST4000DM000-1F2168_W300XXXX  ONLINE       0     0     0
            ata-ST4000DM000-1F2168_W300XXXX  ONLINE       0     0     0
        logs    
          nvme0n1p2                          ONLINE       0     0     0
        cache
          nvme0n1p1                          ONLINE       0     0     0
    
    errors: No known data errors
    Code:
    NAME                                  SIZE  ALLOC   FREE  CKPOINT  EXPANDSZ   FRAG    CAP  DEDUP    HEALTH  ALTROOT
    Tank                                 29.1T  16.0T  13.1T        -         -     0%    54%  1.00x    ONLINE  -
      raidz2-0                           29.1T  16.0T  13.1T        -         -     0%  54.8%      -    ONLINE
        ata-ST4000DM000-1F2168_S300XXXX      -      -      -        -         -      -      -      -    ONLINE
        ata-ST4000DM004-2CV104_ZTT4XXXX      -      -      -        -         -      -      -      -    ONLINE
        ata-ST4000DM004-2CV104_ZTT4XXXX      -      -      -        -         -      -      -      -    ONLINE
        ata-ST4000DM000-1F2168_W300XXXX      -      -      -        -         -      -      -      -    ONLINE
        ata-ST4000DM000-1F2168_W300XXXX      -      -      -        -         -      -      -      -    ONLINE
        ata-ST4000DM000-1F2168_W300XXXX      -      -      -        -         -      -      -      -    ONLINE
        ata-ST4000DM000-1F2168_W300XXXX      -      -      -        -         -      -      -      -    ONLINE
        ata-ST4000DM000-1F2168_W300XXXX      -      -      -        -         -      -      -      -    ONLINE
    logs                                     -      -      -        -         -      -      -      -  -
      nvme0n1p2                           928G      0   928G        -         -     0%  0.00%      -    ONLINE
    cache                                    -      -      -        -         -      -      -      -  -
      nvme0n1p1                           931G     8K   931G        -         -     0%  0.00%      -    ONLINE
    I guess now I just use the pool as normal and monitor to see if the same issue occurs! Crossing all fingers!

    Edit:

    Code:
       READ: bw=4448MiB/s (4664MB/s), 4448MiB/s-4448MiB/s (4664MB/s-4664MB/s), io=10.0GiB (10.7GB), run=2302-2302msec
    Code:
      WRITE: bw=808MiB/s (847MB/s), 808MiB/s-808MiB/s (847MB/s-847MB/s), io=10.0GiB (10.7GB), run=12678-12678msec
    Last edited by tkae-lp; February 9th, 2024 at 05:06 AM.

  2. #132
    Join Date
    Mar 2010
    Location
    USA
    Beans
    Hidden!
    Distro
    Ubuntu Development Release

    Re: Seemingly sporadic slow ZFS IO since 22.04

    Dang. That took a while. I was wondering if everything was okay...

    Crossing fingers with you!!!

    "Concurrent coexistence of Windows, Linux and UNIX..." || Ubuntu user # 33563, Linux user # 533637
    Sticky: Graphics Resolution | UbuntuForums 'system-info' Script | Posting Guidelines | Code Tags

  3. #133
    Join Date
    Nov 2023
    Beans
    75

    Re: Seemingly sporadic slow ZFS IO since 22.04

    Quote Originally Posted by MAFoElffen View Post
    Dang. That took a while. I was wondering if everything was okay...

    Crossing fingers with you!!!
    Thanks! Yeah it did a bit.... glad I didn't stick with rsync, it was still looking at what to do 5 hours in! I'm a ZFS send/recv convert lol

    Sorry I haven't replied sooner - the last week has been busy (schools were off in the UK).

    I am still monitoring and so far things seem to be good:

    Code:
    WRITE: bw=1552MiB/s (1627MB/s), 1552MiB/s-1552MiB/s (1627MB/s-1627MB/s), io=10.0GiB (10.7GB), run=6600-6600msec
    Code:
    READ: bw=3417MiB/s (3583MB/s), 3417MiB/s-3417MiB/s (3583MB/s-3583MB/s), io=10.0GiB (10.7GB), run=2997-2997msec
    Watch this space.....

  4. #134
    Join Date
    Nov 2023
    Beans
    75

    Re: Seemingly sporadic slow ZFS IO since 22.04

    Right so hello again!

    My apologies for taking almost 2 months to reply this time, but I think we can probably all agree that I have given it more than enough time to test lol

    The good news is that I haven't had any issues since my last post. *yay* none at all everything is playing like a champ.

    So this time I think we can definitely mark this as solved.

    I would like to thank both of you again for all your time and effort troubleshooting this, it means a lot and I thoroughly appreciate it. It's been total bliss clicking on something and it actually playing without constantly stopping!

    I have also learnt a great deal throughout this endeavour and I would also like to thank you both for that again also.

    I'm looking forward to Numbat, and I will see you guys for the next adventure

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