On 04/07/08 at 00:07 +0200, Lucas Nussbaum wrote: > On 03/07/08 at 20:13 +0100, Roger Leigh wrote: > > Lucas Nussbaum <[EMAIL PROTECTED]> writes: > > > > > I run several instances of sbuild+schroot in parallel. Sometimes, I run > > > into the following error message: > > > Build started at 20080703-0045 > > > ****************************************************************************** > > > Cannot create link /etc/mtab~ > > > Perhaps there is a stale lock file? > > > > > > E: lsid32-ba72d12e-d721-4f01-aa83-78ce46e9691c: Chroot setup failed: > > > stage=setup-start > > > Chroot setup failed > > > Error creating schroot session: skipping zope-ldapmultiplugins > > > ****************************************************************************** > > > > > > Could this be caused by a race condition in schroot or sbuild ? I > > > never ran into this when I was running only one instance at a time. > > > > While it is possible that a race condition exists, I can't find any > > reference to "Cannot create link" or /etc/mtab in either the schroot > > or sbuild sources. I don't know where that message is coming from. > > > > Which chroot type are you using with sbuild/schroot? The locking can > > vary between the different types, and some (e.g. plain, directory) > > shouldn't be used if you are running sbuild in parallel, though sbuild > > itself should do its own locking in this case and catch the problem. > > I'm using file chroots.
It seems that this is caused by mount failing to lock /etc/mtab (because another build process is already mounting an FS). mount returns 16 in that case according to mount(8). I think that it would make sense to retry mounting once or twice in that case. This occured 6 times during my full archive rebuild today. -- | Lucas Nussbaum | [EMAIL PROTECTED] http://www.lucas-nussbaum.net/ | | jabber: [EMAIL PROTECTED] GPG: 1024D/023B3F4F | -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
