On Sat, 2022-05-21 at 12:32 +0100, Patrick O'Callaghan wrote:
> On Fri, 2022-05-20 at 18:20 -0700, Gordon Messmer wrote:
> > On 5/20/22 14:15, Patrick O'Callaghan wrote:
> > > Thanks, but it's a desktop and the issue appears to be related to
> > > the
> > > latest version of Borg. The check errors happen across all of my
> > > existing backups, not just one.
> >
> >
> > As a result of deduplication, it's expected that all (or most) of
> > your
> > backups will share blocks of data. If there's corruption in the
> > backup
> > data, it is not surprising that it would affect all of them and not
> > just
> > one.
> >
> > Don't assume that the current version is broken. You've dismissed
> > https://github.com/borgbackup/borg/issues/6687 several times for
> > dubious
> > reasons. The conversation there included numerous troubleshooting
> > steps, and I suggest you go through all of them. If you still have
> > problems, collect a log of all of the commands you've run and the
> > output
> > they provided, and add that to a bug report.
>
> I haven't "dismissed" anything. The significant point is that these
> errors only appeared on upgrading to 1.2. I'm watching that bug
> thread
> and will add to it if I can say something useful.
>
> However I'll take your point about trying the troubleshooting steps.
> I
> haven't done so to date as my experience with Borg is limited.
>
> poc
I managed to fix it using 'borg check --repair'. My backup drive is a
BTRFS RAID1, so after using Btrfs to check there were no physical
errors, I copied the Borg repository ('cp -R', really fast because of
COW), then ran the repair. It reported a single error from an
unimportant file (which presumably was causing the shower of errors due
to de-duplication), and the repair fixed it.
Thanks for the various suggestions.
poc
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