[Bacula-users] Possible to back up from a VMWare-loop mounted partition?

We’re looking at using Bacula to back up the contents of VMware virtual machines from snapshots of the filesystem containing the VMDK file. In particular, we have a test instance of FreeNAS in a VMware virtual machine, and a server running Bacula that makes snapshots and performs from-snapshot and from-client backups reliably (although more slowly than we would like).

I wrote a BeforeJob script like the following:

## (omitting our standard command that makes and mounts a snapshot)

sudo mount /mnt/iofreenastest -o remount,rw

yes | sudo /opt/vmware-server/bin/vmware-mount.pl \

/mnt/iofreenastest/FreeNAS.vmdk 6 /mnt/freenas-6 \

-o ufstype=5xbsd,ro &

sleep 3

mount | grep 'on /mnt/freenas-6' || exit 1

However, when the job ran, the director never picked up after the BeforeJob. A few hours later, I checked on it. Here’s what some of “ps aefx” looked like:

17247 ? Ssl 2:02 /usr/sbin/bacula-dir -c /etc/bacula/bacula-dir.conf -

19430 ? Z 0:00 \_ [freenas_before] <defunct>

19575 ? S 0:00 sh -c '/opt/vmware-server/bin/vmware-loop' -q '/mnt/i

19576 ? S 0:01 \_ /opt/vmware-server/bin/vmware-loop -q /mnt/iofree

19577 ? S 0:00 \_ /opt/vmware-server/bin/vmware-loop -q /mnt/io

(there was a “yes” process in there as well, but it has scrolled off my screen)

I tried unsticking it by killing the “yes” process and the “sh” process, both with no effect. Killing the “vmware-loop” process got it going again, but of course that unmounted the directory I wanted to back up, and actually caused the job to fail:

18-Dec 19:46 backup-test2-dir: BeforeJob: run command "/etc/bacula/scripts/freenas_before"

18-Dec 19:46 backup-test2-dir: BeforeJob: Snapshot already exists.

18-Dec 19:46 backup-test2-dir: BeforeJob: Cleaning up stale snapshot bacula-immediate-6135a of 10.x.y.z...

18-Dec 19:46 backup-test2-dir: BeforeJob: deleting snapshot...

18-Dec 19:46 backup-test2-dir: BeforeJob: LUN unmapped OK.

18-Dec 19:46 backup-test2-dir: BeforeJob: creating snapshot...

18-Dec 19:46 backup-test2-dir: BeforeJob: lun map: auto-assigned Backup=0

18-Dec 19:46 backup-test2-dir: BeforeJob: iscsiadm: No active sessions.

18-Dec 19:46 backup-test2-dir: BeforeJob: 10.x.y.z:3260,2000 iqn.1992-08.com.netapp:sn.sn

18-Dec 19:46 backup-test2-dir: BeforeJob: Login session [iface: default, target: iqn.1992-08.com.netapp:sn.sn, portal: 10.x.y.z,3260]

18-Dec 19:46 backup-test2-dir: BeforeJob: Rescanning session [sid: 58, iface: , target: iqn.1992-08.com.netapp:sn.sn, portal: 10.x.y.z,3260]

18-Dec 19:46 backup-test2-dir: BeforeJob:

18-Dec 19:46 backup-test2-dir: BeforeJob: --------------------------------------------

18-Dec 19:46 backup-test2-dir: BeforeJob: VMware for Linux - Virtual Hard Disk Mounter

18-Dec 19:46 backup-test2-dir: BeforeJob: Version: 1.0 build-*****

18-Dec 19:46 backup-test2-dir: BeforeJob: --------------------------------------------

18-Dec 19:46 backup-test2-dir: BeforeJob:

18-Dec 19:46 backup-test2-dir: BeforeJob: It has been reported that this program does not work correctly with 2.4+ Linux

18-Dec 19:46 backup-test2-dir: BeforeJob: kernels in some cases, and you are currently running such a kernel. Do you

18-Dec 19:46 backup-test2-dir: BeforeJob: really want to continue? [N]

18-Dec 19:46 backup-test2-dir: BeforeJob: Network Block Device driver detected.

18-Dec 19:46 backup-test2-dir: BeforeJob:

18-Dec 19:46 backup-test2-dir: BeforeJob: Client: The partition is now mapped on the /dev/nb0 Network Block Device.

18-Dec 19:46 backup-test2-dir: BeforeJob:

18-Dec 19:46 backup-test2-dir: BeforeJob: Using another terminal, you can now browse your Virtual Hard Disk partition in

18-Dec 19:46 backup-test2-dir: BeforeJob: /mnt/freenas-6. Hit Control-C in this terminal when done.

19-Dec 09:46 backup-test2-dir: BeforeJob: Warning: The NBD_DO_IT ioctl returned an error: Broken pipe

19-Dec 09:46 backup-test2-dir: TestBackupFreeNASVmwareLoop.2008-12-18_16.55.02 Error: Runscript: BeforeJob returned non-zero status=1. ERR=Child exited with code 1

I guess the vmware-loop process is still somehow related to the director, which is why Bacula hung. Has anyone gotten Bacula to mount and back up an idle VMDK file, either with vmware-mount.pl or invoking vmware-loop directly, or by some other program?

David Lee Lambert

Yahoo! IM: davidleelambert · MSN IM: lamber45 AT cse.msu DOT edu

Slashdot/Sourceforge UID: lamber45

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[Bacula-users] Possible to back up from a VMWare-loop mounted partition? (vmware-mount zombie)