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Re: backing up backups

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On 4/18/22 13:06, Default User wrote:

> Finally, fun fact:
> Many years ago, at a local Linux user group meeting, Sun Microsystems put
> on a demonstration of their ZFS filesystem. To prove how robust it was,
> they pulled the power cord out of the wall socket on a running desktop
> computer. Then they plugged the cord back in and re-booted, with no
> problems! Yes, I was impressed.


I bumped the USB cable of an external HDD while doing a ZFS incremental 
replication from my server to a backup disk.  The backup pool was corrupted:

2022-03-28 18:16:25 toor@f1 ~
# zpool status -v z6000b
   pool: z6000b
  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: http://illumos.org/msg/ZFS-8000-8A
   scan: scrub repaired 0 in 0 days 09:36:15 with 0 errors on Mon Mar 28 
00:09:09 2022
config:

         NAME              STATE     READ WRITE CKSUM
         z6000b            ONLINE       0     0     0
           gpt/z6000b.eli  ONLINE       0     0     0
         cache
           gpt/z60a.eli    ONLINE       0     0     0

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

         <metadata>:<0x0>
         <metadata>:<0x39>


I bought a SATA 6 Gbps drive rack:

https://www.startech.com/en-us/hdd/drw150satbk

destroyed the backup pool, recreated the backup pool, and did a full 
replication.


David

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backing up backups Default User <hunguponcontent@gmail.com> - 2022-04-11 05:00 +0200
  Re: backing up backups David <bouncingcats@gmail.com> - 2022-04-11 05:20 +0200
    Re: backing up backups Default User <hunguponcontent@gmail.com> - 2022-04-11 06:00 +0200
  Re: backing up backups David Christensen <dpchrist@holgerdanske.com> - 2022-04-11 06:50 +0200
    Re: backing up backups <tomas@tuxteam.de> - 2022-04-11 07:20 +0200
      Re: backing up backups David Christensen <dpchrist@holgerdanske.com> - 2022-04-11 18:10 +0200
        Re: backing up backups Default User <hunguponcontent@gmail.com> - 2022-04-13 18:30 +0200
          Re: backing up backups David Christensen <dpchrist@holgerdanske.com> - 2022-04-13 22:50 +0200
            Re: backing up backups Default User <hunguponcontent@gmail.com> - 2022-04-14 05:10 +0200
              Re: backing up backups David Christensen <dpchrist@holgerdanske.com> - 2022-04-14 09:30 +0200
                Re: backing up backups Default User <hunguponcontent@gmail.com> - 2022-04-18 22:10 +0200
                Re: backing up backups David Christensen <dpchrist@holgerdanske.com> - 2022-04-19 00:50 +0200
                Re: backing up backups David Wright <deblis@lionunicorn.co.uk> - 2022-04-21 23:00 +0200
  Re: backing up backups Keith Bainbridge <keithrboz@gmail.com> - 2022-04-19 06:00 +0200
  Re: backing up backups David Wright <deblis@lionunicorn.co.uk> - 2022-04-19 18:10 +0200

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