Jeffrey J. Kosowsky wrote:
> When running an incremental backup on my Linux system, BackupPC
> repeatedly hangs when backing up the mythconverg mysql database for
> mythtv.
>
> Note that the database seems to be perfectly intact and I don't have
> any problem 'rsyncing' it manually.
>
> The specific error messages I get are:
>
> Can't get rsync digests from
> /var/lib/BackupPC/pc/consult/3/f%2f/fvar/flib/fmysql/fmythconverg/
> fpeople.MYI
> (err=-2, name=var/lib/mysql/mythconverg/people.MYI)
> Can't get rsync digests from
> /var/lib/BackupPC/pc/consult/3/f%2f/fvar/flib/fmysql/fmythconverg/
> fpidcache.MYD
> (err=-2, name=var/lib/mysql/mythconverg/pidcache.MYD)
> Can't get rsync digests from
> /var/lib/BackupPC/pc/consult/3/f%2f/fvar/flib/fmysql/fmythconverg/
> fpidcache.MYI
> (err=-2, name=var/lib/mysql/mythconverg/pidcache.MYI)
> Can't get rsync digests from
> /var/lib/BackupPC/pc/consult/3/f%2f/fvar/flib/fmysql/fmythconverg/
> fprogram.MYD
> (err=-2, name=var/lib/mysql/mythconverg/program.MYD)
> Can't get rsync digests from
> /var/lib/BackupPC/pc/consult/3/f%2f/fvar/flib/fmysql/fmythconverg/
> fprogram.MYI
> (err=-2, name=var/lib/mysql/mythconverg/program.MYI)
> Can't get rsync digests from
> /var/lib/BackupPC/pc/consult/3/f%2f/fvar/flib/fmysql/fmythconverg/
> fprogramgenres.MYD
> (err=-2, name=var/lib/mysql/mythconverg/programgenres.MYD)
> Can't get rsync digests from
> /var/lib/BackupPC/pc/consult/3/f%2f/fvar/flib/fmysql/fmythconverg/
> fprogramgenres.MYI
> (err=-2, name=var/lib/mysql/mythconverg/programgenres.MYI)
> Can't get rsync digests from
> /var/lib/BackupPC/pc/consult/3/f%2f/fvar/flib/fmysql/fmythconverg/
> fprogramrating.MYD
> (err=-2, name=var/lib/mysql/mythconverg/programrating.MYD)
> Can't get rsync digests from
> /var/lib/BackupPC/pc/consult/3/f%2f/fvar/flib/fmysql/fmythconverg/
> fprogramrating.MYI
> (err=-2, name=var/lib/mysql/mythconverg/programrating.MYI)
> Can't get rsync digests from
> /var/lib/BackupPC/pc/consult/3/f%2f/fvar/flib/fmysql/fmythconverg/
> frecord.MYD
> (err=-2, name=var/lib/mysql/mythconverg/record.MYD)
> Can't call method "isCached" on an undefined value at
> /usr/share/BackupPC/lib/BackupPC/Xfer/RsyncFileIO.pm line 165.
>
> It then just proceeds to hang for HOURS...
>
> The most disturbing thing to me is that BackupPC seems to be so
> fragile in that if it encounters a problem, it seems to just hang
> there (seemingly) forever without sending any error messages
I get error messages about things like network errors BackupPC
encounters during backups. The error you're having doesn't sound like
'regular error' though and that's probably why you get irrgular
behavior (hanging processes). Either you've hit a bug in BackupPC or
your installation is broken, but that undefined value error shouldn't
occur. Did you install BackupPC using a package manager? If so, can
you verify the installation (e.g. rpm -V BackupPC if you installed an
RPM)?
> and without even doing something like skipping the troublesome areas
> and
> moving on.
Now that would be scary: would you like incomplete backups?
Nils Breunese.
P.S. Backing up MYI and MYD files of MySQL databases is not very
useful, as they're not guaranteed to be in a consistent state when you
back them up. Even if you backed them up succesfully you could have
corrupt databases after restoring these files. Better create SQL dumps
using the pre-dump command and backup those.
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