[linux-lvm] LVM metsdata
Joe Thornber
thornber at btconnect.com
Tue Oct 9 07:47:17 UTC 2001
On Mon, Oct 08, 2001 at 01:42:54PM -0700, Lee Go-Tze wrote:
> I have a novice question. How does the LVM
> protect its metadata. I mean does it do some
> sort of metadata check when machine comes up
> (notices the system did not shutdown properly)?
> Or maybe it uses journaling? I imagine the
> updates to lv/vg/pv structures have to be
> transactional.
Transactional updates will go into LVM after mid November. Checksums
for the metadata will also go in at this point. ATM problems are
spotted by consistency checks (the is a lot of duplication between the
pv's). If a problem is spotted the administrator can restore from the
automatic metadata backups.
- Joe
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