Date: Wed, 18 Apr 2007 04:30:07 GMT From: Kris Kennaway <kris@obsecurity.org> To: freebsd-bugs@FreeBSD.org Subject: Re: kern/111766: "panic: ffs_blkfree: freeing free block" during disk activity Message-ID: <200704180430.l3I4U78k041211@freefall.freebsd.org>
next in thread | raw e-mail | index | archive | help
The following reply was made to PR kern/111766; it has been noted by GNATS. From: Kris Kennaway <kris@obsecurity.org> To: Rong-En Fan <rafan@FreeBSD.org> Cc: Kris Kennaway <kris@obsecurity.org>, FreeBSD-gnats-submit@FreeBSD.org Subject: Re: kern/111766: "panic: ffs_blkfree: freeing free block" during disk activity Date: Wed, 18 Apr 2007 00:22:07 -0400 --vtzGhvizbBRQ85DL Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Wed, Apr 18, 2007 at 12:14:35PM +0800, Rong-En Fan wrote: > On Wed, Apr 18, 2007 at 12:06:15AM -0400, Kris Kennaway wrote: > > On Wed, Apr 18, 2007 at 12:01:53PM +0800, Rong-En Fan wrote: > > > I think I tried once but in vain. Some previous backtrace > > > at http://www.rafan.org/FreeBSD/panic/freeing_free_block/ > > > I haven't see this since last Oct, but the filesystem does not > > > get full recently (we got larger disks). > >=20 > > Unfortunately I dont think the backtrace is very useful, it's > > reporting damage that occured at some earlier time. > >=20 > > > >From previous experience, usually the panic is triggered on > > > the full partition but I saw once or twice that it's triggered > > > on another non-full filesystem. >=20 > Let me clear it a bit. When it's triggered on non-full filesystem, > I have another filesystem is full and some clients trying to write > to the full one. >=20 > > I am not entirely sure whether it is really due to a full filesystem, > > because I've also come across it in random circumstances. I have also > > spent some time stressing full filesystems without causing the panic. > > If you can come up with a way to reliably produce it, that would be > > very useful (possibly essential). >=20 > Perhaps in the summer, I can find some free time to do this. > Just curious, have you tried exported the filesystem and stress > via nfs client? I didn't try that, but will give it a shot. Kris --vtzGhvizbBRQ85DL Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (FreeBSD) iD8DBQFGJZzvWry0BWjoQKURAkTLAKDN2qSiC2JzjhJP9nJbeB4TnOkhBgCfV6YG XMBK0NuGFBdah4qlN8i++bQ= =vfMW -----END PGP SIGNATURE----- --vtzGhvizbBRQ85DL--
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200704180430.l3I4U78k041211>