On Thu, Jul 28, 2005 at 01:44:00PM -0400, Ming Zhang wrote: > 1) very hard to solve technically. or > 2) not so easy but doable, just no time and human resource? The hardest part of the fix involves changing the sequence of device-mapper ioctls that LVM2 uses, and that's a couple of weeks' development work, now pencilled into the RHEL4 Update 3 timescale. In the meantime, you can apply the snapshot patches in the -udm tree and use 'dmsetup' manually to activate and deactivate snapshots when lvm2 fails. Patches 8 and 9 at: ftp://sources.redhat.com/pub/dm/patches/2.6-unstable/2.6.12-rc2/2.6.12-rc2-udm1/ (Further patches are needed, but those two plus correct dmsetup use should avoid machine lockups.) Alasdair -- agk@redhat.com _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/