Cannot export jail?

[Daisuke]

I created a jail on TrueNAS12-U2 and installed plexmediaserver on it, everything is working great:

Code:

iocage create -n plexmediaserver -r 12.2-RELEASE boot=on dhcp=on vnet=on bpf=yes

After one week of usage, I wanted to do a backup and I tried to export the jail without success, the zip file is not created:

Code:

# iocage stop plexmediaserver
# iocage export plexmediaserver
Exporting dataset: services/iocage/jails/plexmediaserver
Exporting dataset: services/iocage/jails/plexmediaserver/root
warning: cannot send 'services/iocage/jails/plexmediaserver/root@ioc-export-2021-02-20': Input/output error
Command '['zfs', 'send', 'services/iocage/jails/plexmediaserver/root@ioc-export-2021-02-20']' returned non-zero exit status 1.

Example for another jail where I run different software, which behaves correctly:

Code:

# iocage stop media
# iocage export media
Exporting dataset: services/iocage/jails/media
Exporting dataset: services/iocage/jails/media/root
Preparing compressed file: /mnt/services/iocage/images/media_2021-02-20.zip.
Exported: /mnt/services/iocage/images/media_2021-02-20.zip

# ls -lah /mnt/services/iocage/images
total 3778501
drwxr-xr-x  2 root  wheel     4B Feb 20 02:52 .
drwxr-xr-x+ 4 root  wheel     7B Feb 20 02:32 ..
-rw-r--r--  1 root  wheel    64B Feb 20 02:03 media_2021-02-20.sha256
-rw-r--r--  1 root  wheel   1.8G Feb 20 02:03 media_2021-02-20.zip

Why can't I do the same with plexmediaserver? I want to create a zip file, is a great way to restore the jail.

 

[Patrick M. Hausen]

Enter dmesg and zpool status -v. That I/O error message hints at a problem with your disks and pool.

 

[Daisuke]

The services pool is actually an SSD disk where I run the jails, I did a scrub and nothing is fixed.Is there a way to fix it or should I replace the SSD with a new one?

Code:

# zpool status -v services
  pool: services
state: ONLINE
status: One or more devices has experienced an error resulting in data
    corruption.  Applications may be affected.
action: Restore the file in question if possible.  Otherwise restore the
    entire pool from backup.
   see: https://openzfs.github.io/openzfs-docs/msg/ZFS-8000-8A
  scan: scrub repaired 0B in 00:01:27 with 0 errors on Sun Feb 14 00:01:27 2021
config:

    NAME                                          STATE     READ WRITE CKSUM
    services                                      ONLINE       0     0     0
      gptid/a65289b6-17fd-11eb-9d4b-047d7bd5d6a2  ONLINE       0     0     6

errors: Permanent errors have been detected in the following files:

        <0xf77d>:<0x70023>
        <0xf77d>:<0x6ff60>
        <0xf77d>:<0x6fdc1>
        <0xf6f3>:<0x70023>
        <0xf6f3>:<0x6ff60>
        <0xf6f3>:<0x6fdc1>

 

[Patrick M. Hausen]

There is no way to fix it without redundancy. Consider setting up mirrored SSDs for your jails. Additionally or alternatively you could set up a replication task that copies all your jails to your redundant storage pool (which I just assume you have).

The output of smartctl -a for your SSD would tell you some more, but probably that drive is done and needs to be replaced.