On Sun, May 19, 2002 at 11:22:59AM +0200, David Stes wrote: > > Hello, > > There is an option --snap to the lvcreate utility to create a read-only snapshot(frozen image) of a volume. > > Is there a possibility to quickly create a rw (read/write) snapshot of a logical volume ? Beside other enhancements this is in 1.1-rcX which you can find in CVS at www.sistina.com. *** This is still in stabilization! Don't use it on production systems! *** > > I'm thinking here of applications in the style of EMC Timefinder BCV's (bcv = business continuance volumes). > > For example, I want to create a snapshot of a mounted volume running Informix. > > The snapshot of the mounted logical volume will be inconsistent, but it appears then to contain a 'crashed' instance of Informix, and when mounting the snapshot, I'd like to replay logfiles (do a recovery on the crashed instance) for which I need read/write access to the snapshot ... You can do this and other things (for eg.: full fsck on the writable snapshot to check a filesystems integrity). > > Thank you, > David Stes. > > > _______________________________________________ > linux-lvm mailing list > linux-lvm@sistina.com > http://lists.sistina.com/mailman/listinfo/linux-lvm > read the LVM HOW-TO at http://www.sistina.com/lvm/Pages/howto.html -- Regards, Heinz -- The LVM Guy -- *** Software bugs are stupid. Nevertheless it needs not so stupid people to solve them *** =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Heinz Mauelshagen Sistina Software Inc. Senior Consultant/Developer Am Sonnenhang 11 56242 Marienrachdorf Germany Mauelshagen@Sistina.com +49 2626 141200 FAX 924446 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- _______________________________________________ linux-lvm mailing list linux-lvm@sistina.com http://lists.sistina.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://www.sistina.com/lvm/Pages/howto.html