> Date: Tue, 01 Nov 2005 16:02:55 -0600 > From: Kelly Sauke <ksauke@fastenal.com> > Subject: Re: Creating snapshot causes processes hang? > To: LVM general discussion and development <linux-lvm@redhat.com> > Message-ID: <4367E60F.8020004@fastenal.com> > Content-Type: text/plain; charset=ISO-8859-1 > > http://www.redhat.com/archives/linux-lvm/2005-July/msg00117.html > AHA! -- could this be a confirmation of what I have seen where lvremove triggers the kcopyd BUG and consequent system deadlock? (ref: my recent posting -- https://www.redhat.com/archives/linux- lvm/2005-November/msg00002.html, where I report breakage upon lvremove when there are 2 snapshots and i/o is occurring) If so, do I also understand correctly that using unreleased patches and some manual dmsetup commands might constitute a workaround? I don't mind living with manual workarounds until snapshots is fixed, but it would be wonderful to see an explicit recipe [for dummies, please <grin>] for following the suggestions in the AGK july posting referenced by ksauke, above), namely: "Further patches are needed, but those two plus correct dmsetup use should avoid machine lockups." In particular: have any of the 18 patches shown at ftp://sources.redhat.com/pub/dm/patches/2.6-unstable/2.6.12- rc2/2.6.12-rc2-udm1/ gotten into 2.6.13 or 2.6.14, or into kernels blessed by Fedora? (eg, FC4-1526, maybe) And, could someone give me an example of "correct dmsetup" use? I presume it involves suspend and resume -- but what else? .. and in my case, what if there is an existing snapshot when I need to create/remove a second one? ..jim _______________________________________________ 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/
