In regard to: Re: [Networker] savepnpc that alters the list of...:

NetWorker gets the list of file systems from /etc/fstab on Linux systems
when the backup begins (precmd). In order to accomplish what you want,
you need to explicitly list out the file systems in the client resource
rather than using "All."

I actually misspoke in my earlier description.  The snapshot mount is
actually *always* present in /etc/fstab:

/dev/sanvg2/bbcontent_snap      /bbsnap  ext4 defaults,noatime,noauto 1 2

The savepnpc precmd is *not* adding that.  It's just generating the
snapshot and mounting it on /bbsnap.  The savepncp postcmd unmounts it
and removes the snapshot, but leaves the entry in /etc/fstab.

We did it that way because we thought that would make it easier with
NetWorker, but as we discovered, the "All" saveset still is not including
/bbsnap among the list.

We're guessing that's either happening because of the ",noauto" on the
mount options, which is pretty much required for this scenario, or because
the client may actually be looking at /proc/mounts too and discovering
that even though there's an ext4 filesystem mentioned in /etc/fstab, it's
not (yet) mounted on /bbsnap.

Tim

On Feb 6, 2013, at 3:58 PM, Tim Mooney <Tim.Mooney AT NDSU DOT EDU>
wrote:

All-

NetWorker server: NetWorker 7.6.2.5 on RHEL 6.3 x86_64
NetWorker client: NetWorker 7.6.2.5 on RHEL 5.9 x86_64

Does anyone know when, during the save process, the list of filesystems to
back up is set?  In particular, does it happen *before* the precmd in
a savepnpc script?

I ask because we're trying to use a savepnpc precmd script to snapshot a
Linux LVM volume and then mount the snapshot in a new place and have
NetWorker back up the snapshot.  We are using the "All" saveset for the
client.  So far, NetWorker hasn't even noticed that the new snapshot
filesystem is available for backup, so I'm concerned that it may be
setting the list of volumes to back up *before* the precmd runs.

Note that the precmd is doing the snapshot, mounting the volume, and
updating /etc/fstab with the entry for the new mounted volume.

Any thoughts on whether this should work?

Tim
--
Tim Mooney                                             Tim.Mooney AT ndsu DOT 
edu
Enterprise Computing & Infrastructure                  701-231-1076 (Voice)
Room 242-J6, IACC Building                             701-231-8541 (Fax)
North Dakota State University, Fargo, ND 58105-5164

--
Tim Mooney                                             Tim.Mooney AT ndsu DOT 
edu
Enterprise Computing & Infrastructure                  701-231-1076 (Voice)
Room 242-J6, IACC Building                             701-231-8541 (Fax)
North Dakota State University, Fargo, ND 58105-5164