On Sun, 18 Sep 2011 17:47:34 +0200
Tobias Schenk <tob...@die-schenks.net> wrote:
> I try use bacula 5.0.3 on suse linux to backup lvm snapshots.
> Basically, I create a lvm snapshot called /dev/vmguests/backup using
> the RunScript directive. Unfortunately, this is a sym link
> to /dev/dm-6. I cannot be sure it is always dm-6. I would like to
> follow the sym link and backup /dev/dm-6 as raw device.
>
> The hints I found while googling are are not working (like
> appending /. to the File directive) or obscure (like using bash
> scripting to resolve File names).
> I cannot simply mount /dev/dm-6 to somewhere because the contents is
> a partitioned raw device of a kvm instance.
> Maybe it is possible resolve the link using a bash script in the file
> directive
You can use the `readlink` command to resolve the symlink.
> but I have not found information about when the File
> directive will be evaluated relative to RunScript.
>
> Has anyone a working solution for lvm snapshots?
>
> The Job currently looks very plainly like this:
>
> FileSet {
> Name = FsVMMyDms # Adjust to VM
> Include {
> Options {
> compression = GZIP
> signature = SHA1
> sparse = yes
> }
> File = /dev/vmguests/backup
> }
> }
You can try to use something like
File = "| readlink /dev/vmguests/backup"
to dynamically read that file containing the real device name.
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