On 08/12 05:46 , Holger Parplies wrote:
> Carl Wilhelm Soderstrom wrote on 2011-08-11 13:16:38 -0500 [[BackupPC-users]
> BackupPC spontaneous server exit with SIGPIPE]:
> > BackupPC 3.1.0 on Debian, kernel is 2.6.32, filesystem is xfs.
> >
> > I have a BackupPC server that has twice now had the BackupPC server process
> > spontaneously exit. It *did* shut down nicely, interestingly enough. The
> > server log (/var/lib/backuppc/log/LOG) is this:
> > [...]
> > 2011-08-11 09:00:01 Next wakeup is 2011-08-11 10:00:00
> > 2011-08-11 09:51:47 Got signal PIPE... cleaning up
>
> as you probably know SIGPIPE means that the server is trying to write to a
> socket that has been closed by the peer. BackupPC doesn't expect that
> situation and doesn't attempt to handle it, because it only ever replies to
> messages just received (from so-called "clients"; it doesn't seem to ever
> write to backup jobs!) and new incoming connections, and the software speaking
> to the daemon (BackupPC_serverMesg) doesn't close the socket without waiting
> for a reply. I suppose it would be easy to implement a malicious "client" that
> causes the server to crash, and apparently some error condition can also lead
> to this.
Our current theory is that it's a bad RAID controller that keeps resetting
itself. It somehow doesn't seem to cause filesystem corruption; but there
are errors in the backuppc logs which make me think that the files are
occasionally disappearing unexpectedly. If the socket goes away, then as I
understand your explanation above, this would seem to be a good reason for
BackupPC to die.
2011-08-11 13:26:07 ERROR: opendir
(/var/lib/backuppc/pc/gypsy.example.com/683/fcDrive/fDocuments and
Settings/fsjones/fApplication Data/fMacromedia/fFlash
Player/fmacromedia.com/fsupport/fflashplayer/fsys/f#media.nbcwashington.com)
failed
2011-08-11 13:26:08 ERROR: opendir
(/var/lib/backuppc/pc/gypsy.example.com/681/fcDrive/fDocuments and
Settings/fsjones/fApplication Data/fMacromedia/fFlash
Player/fmacromedia.com/fsupport/fflashplayer/fsys/f#www.keloland.com) failed
2011-08-11 13:36:34 Got signal TERM... cleaning up
--
Carl Soderstrom
Systems Administrator
Real-Time Enterprises
www.real-time.com
------------------------------------------------------------------------------
uberSVN's rich system and user administration capabilities and model
configuration take the hassle out of deploying and managing Subversion and
the tools developers use with it. Learn more about uberSVN and get a free
download at: http://p.sf.net/sfu/wandisco-dev2dev
_______________________________________________
BackupPC-users mailing list
BackupPC-users AT lists.sourceforge DOT net
List: https://lists.sourceforge.net/lists/listinfo/backuppc-users
Wiki: http://backuppc.wiki.sourceforge.net
Project: http://backuppc.sourceforge.net/
|
