Hi Mandeep, Thanks fpr your quick answer. So, what can be done about this ? Should I try to apply that patch you linked to ? (but I guess a patch from 2007 won't apply cleanly ...) Regards, Luzipher --- On Wed, 25/1/12, Mandeep Singh Baines <msb@xxxxxxxxxxxx> wrote: > From: Mandeep Singh Baines <msb@xxxxxxxxxxxx> > Subject: Re: Kernel BUG (fs/bio.c:1499) when copying more files to an encrypted device > To: "Luzipher McLeod" <luziphermcleod@xxxxxxxx> > Cc: dm-crypt@xxxxxxxx, "NeilBrown" <neilb@xxxxxxx> > Date: Wednesday, 25 January, 2012, 2:14 > Luzipher McLeod (luziphermcleod@xxxxxxxx) > wrote: > > Hi :-) > > > > A few days ago I encountered a kernel bug while copying > files to an encrypted filesystem. The specific stack for the > filesystem is: btrfs-on-crypt-on-mdraid. Vasts amounts of > data copied without problems (about 6.3TB with 1.1 TB > remaining), but when copying a certain directory, the kernel > bug surfaces. I repeatedly deleted the affected directory > and tried to re-copy it, but it always fails at the same > point (or close to that). More recent test showed that I > could copy a few more files to the filesystem to a different > directory, but it very quickly failed there as well (a few > megabytes later). > > After talking to the btrfs devs on freenode (as btrfs > is the most experimental thing in the stack, they came to > the conclusion that it's most probably the crypto layer. > > > > Some details: > > gentoo kernel 3.2.1 (custom config and ubuntu config) > > mdraid: linear, 4 disks, each 2TB (total 8TB) > > crypt: setup via cryptsetup -c aes-xts-plain64 -h plain > -s 512 -d - create tempraid /dev/md/tempraid_lin > > > > I'd appreciate any help with this and would be happy to > test patches or provide more debug info. > > > > Thanks and Regards, > > Luzipher > > > > > > > > > > The kernel bug output retrieved by netconsole (also at > http://pastebin.com/sjJy7QE4 ): > > [ 294.538422] netconsole: > local port 6666 > > [ 333.423583] SysRq : > Changing Loglevel > > [ 333.423609] Loglevel > set to 9 > > [ 424.248405] > ------------[ cut here ]------------ > > [ 424.248447] kernel BUG > at fs/bio.c:1499! > > Hi Luzipher, > > Looks like the BUG is because bio_split only works on > single-page iovecs. > > I see a relevant (old) patch from Neil Brown here: > > https://lkml.org/lkml/2007/7/30/496 > > Regards, > Mandeep > _______________________________________________ dm-crypt mailing list dm-crypt@xxxxxxxx http://www.saout.de/mailman/listinfo/dm-crypt
