[DRBD-user] DRBD and LVM Snapshot with 2 nodes configuration

Philipp Reisner philipp.reisner at linbit.com
Thu Apr 8 11:49:24 CEST 2004

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.


On Thursday 08 April 2004 00:39, Lars Ellenberg wrote:
> / 2004-04-07 17:44:04 -0400
>
> \ Greg Freemyer:
> > I have not been following this thread very closely, but I think one of
> > the major issues is that the LVM VFS-lock patch does not work if drbd is
> > layered above lvm.
> >
> > If this is the only issue, then maybe xfs_freeze can be used as a work
> > around.  (It can be used in the absense of the vfs-lock patch.)
> >
> > With a kernel lacking the vfs-lock patch, the following does work on a
> > single node setup:
> >
> > xfs_freeze -f /dev/...   // Cause XFS to prepare for a snapshot
> > create snapshot
> > xfs_freeze -u /dev/...   // Allow XFS to continue handling i/o
> >
> > I don't know if any of the other filesystems over a userspace took to
> > invoke freeze/unfreeze.
>
> only that XFS does not work with DRBD 0.6.x :)
>

Fortunately it XFS works with drbd-0.7.x.
Hmm, this xfs_freeze makes XFS a lot more attractive than 
all the other FSs.

-philipp
-- 
: Dipl-Ing Philipp Reisner                      Tel +43-1-8178292-50 :
: LINBIT Information Technologies GmbH          Fax +43-1-8178292-82 :
: Schönbrunnerstr 244, 1120 Vienna, Austria    http://www.linbit.com :



More information about the drbd-user mailing list