Date: Thu, 21 Jan 2010 19:52:16 +0200 From: David Naylor <naylor.b.david@gmail.com> To: Andriy Gapon <avg@icyb.net.ua> Cc: freebsd-current@freebsd.org Subject: Re: stacked unionfs freeze and crash FreeBSD Message-ID: <201001211952.20202.naylor.b.david@gmail.com> In-Reply-To: <4B573A8B.8080306@icyb.net.ua> References: <201001201543.15818.naylor.b.david@gmail.com> <201001201834.48466.naylor.b.david@gmail.com> <4B573A8B.8080306@icyb.net.ua>
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--nextPart9632437.lP9HUY7ufi Content-Type: Text/Plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable On Wednesday 20 January 2010 19:16:59 Andriy Gapon wrote: > on 20/01/2010 18:34 David Naylor said the following: > > Here it is. If anyone ones the full core.txt just shout. > > > > #0 doadump () at pcpu.h:223 > > 223 pcpu.h: No such file or directory. > > in pcpu.h > > (kgdb) #0 doadump () at pcpu.h:223 > > #1 0xffffffff80589ba9 in boot (howto=3D260) > > at /usr/src/sys/kern/kern_shutdown.c:416 > > #2 0xffffffff80589fdc in panic (fmt=3D0xffffffff8098bd81 "double fault= ") > > at /usr/src/sys/kern/kern_shutdown.c:579 > > #3 0xffffffff8086e546 in dblfault_handler (frame=3DVariable "frame" is= not > > available.) > > at /usr/src/sys/amd64/amd64/trap.c:884 > > #4 0xffffffff808557fc in Xdblfault () > > at /usr/src/sys/amd64/amd64/exception.S:278 > > #5 0xffffffff81e464c1 in unionfs_statfs (mp=3DVariable "mp" is not > > available.) at > > /usr/src/sys/modules/unionfs/../../fs/unionfs/union_vfsops.c:428 Previo= us > > frame inner to this frame (corrupt stack?) > > (kgdb) >=20 > Double-fault could indicate stack overflow. Thanks, I bumped KSTACK_PAGES to 32 (just to be on the safe side) and it is= =20 working fairly well now. Only crash I have had since was related to tmpfs.= =20 So far I have successfully build a port with 59 stacked unionfs (1 rw, 58 r= o). =20 Regards, David --nextPart9632437.lP9HUY7ufi Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part. -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.13 (FreeBSD) iEYEABECAAYFAktYlFQACgkQUaaFgP9pFrLkZgCeM6qrD+tZyw3mFRmc69eJfvj3 3F8An1bkTYMEKyt2qk34oKgtood2fTvD =+8eS -----END PGP SIGNATURE----- --nextPart9632437.lP9HUY7ufi--
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