On Jul 1, 2005, at 7:53 AM, Paul Bijnens wrote:

Maurice Poisson Adriasola wrote:

I intend to backup a host without stopping its services. To achieve it

I've put Debian Sarge's "amdump" in a wrapping bash script that does the

following:

1) Open an ssh connection, as root, to the host to be backed up and run

on it a script that creates and mounts a snapshot of the /var
filesystem.
2) Run Sarge's amdump script
3) Open an ssh connection, as root, to the already backed up host and
run a script that unmounts the snapshot and removes it.

For the time being the only host that has to be backed up is the amanda

server itself. Backups seem to be done right, but once every two runs
the hosts hangs and needs to be rebooted just after doing the backup.

Are you hitting this bug?

https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=132057

I never noticed the regularity -- once every two runs -- or is that just

a rough proportion of the crashes/successes?

amcheck is done a couple of hours before amdump. It is also preceded by

snapshot creation and followed by snapshot removal and it never fails,
Thus I believe I must have overlooked something in amanda's
configuration.

Again a clue that it could be load related: during amcheck there is very

little disk activity.

To avoid the trouble with lvm2, I also avoid any conditions like
running out of space, just in case they might tickle the bug.
Maybe you have a larger diskactivity or larger dump or... once every
two runs, tickling the bug?