Date: Mon, 9 Oct 2000 23:21:27 -0400 (EDT) From: Robert Watson <rwatson@freebsd.org> To: "Marc G. Fournier" <scrappy@hub.org> Cc: freebsd-current@freebsd.org Subject: Re: can't get into single user mode - panic: ffs_valloc: dup alloc Message-ID: <Pine.NEB.3.96L.1001009231821.12081E-100000@fledge.watson.org> In-Reply-To: <Pine.BSF.4.21.0010092143550.23541-100000@hub.org>
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On Mon, 9 Oct 2000, Marc G. Fournier wrote: > Well, I swear I have to be missing something here that is going to > make me slap my forehead, but I can't get into single user mode :( > > I hit the space bar, type in 'boot -s' and it goes through all the > normal start up procedures, sets up the networking, etc ... > > The reason I'm trying to get into single user mode is cause I > can't get into multi-user without it doing: That's interesting -- this morning, I hit a ffs_valloc: dup alloc panic following a buildworld. I assumed it was to do with my local ACL patches, although I have been unable to find a bug that could trigger it. I'm wondering if this isn't some sort of locking issue in VFS. I managed to trigger it in ufs_mkdir(), as I introduced a potentially location for blocking where previously none existed, suggesting that perhaps some UFS code is playing fast and loose with vnode locks. This panic is generated when FFS tries to recycle a vnode, but discovers it has a non-zero mode, indicating that it is in use elsewhere in the system, which should never happen. BTW, do you have FFS_EXTATTR enabled? Anyhow, I'm going to see if I can get it to be reproduceable here. Robert N M Watson robert@fledge.watson.org http://www.watson.org/~robert/ PGP key fingerprint: AF B5 5F FF A6 4A 79 37 ED 5F 55 E9 58 04 6A B1 TIS Labs at Network Associates, Safeport Network Services To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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