On Mon, Feb 05, 2007 at 04:44:23PM +0100, Marc Lehmann wrote: > On Fri, Feb 02, 2007 at 08:16:38PM -0800, Steve Langasek <[EMAIL PROTECTED]> > wrote: > > According to #383418, this bug only affects versions of libdevmapper1.02 > > previous to the version currently in etch, and there is no libdevmapper1.02 > > in sarge. There is a libdevmapper1.01, but it's not clear that version of > > the lib is also affected.
> Thats fine, the bug still eats disks, and while I don't know anything > about the chances of this happening I would still assume its a pretty > common occurence as upgrading both lvm2 and dmsetup didn't upgrade the > library used by them, leaving the broken one in place. Keeping old, unreleased versions of packages around on your system is always unsupported. > > > indeed, upgrading it made pvmove seemingly work (neither upgrading dmsetup > > > nor lvm2 upgrades this library to the required version). I think I had > > > 1.02.06-1 and upgraded to 1.02.12-1. > > > Please, I urge you, add an antidependency to the kernel against old and > > > incompatible versions of libdevmapper. This problem is *severe*, causes > > > serious data loss, is a known issue, and is so easily avoidable and so > > > hard to diagnose. > > But it's not a bug in the kernel -- it's a bug in an obsolete, > First of all, while the data corruption can be conceivably be a userspace > bug, remember that the lvm2 commands went into uninterruptible sleep > (no kill -9), which cannot be a userspace problem unless you assume > libdevmapper opens /dev/mem and pokes into the kernel directly. Ok, that's fair, it's a kernel bug for allowing such a deadlock to occur; but it's also a userspace bug for doing something that deadlocks the kernel, and I don't think the kernel should bear the greater responsibility here. > > never released, and unsupported version of devmapper. > Right, but just for the sake of helping people who used the never released > and unsupported version of devmapper that likely many people using unstable > or testing still have installed and doesn't get upgraded it would make sense > to do that, won't you think? I think it's a fair request; it's just not release-critical, as you suggested in your bug severity. -- Steve Langasek Give me a lever long enough and a Free OS Debian Developer to set it on, and I can move the world. [EMAIL PROTECTED] http://www.debian.org/ -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
