What protection does btrfs checksumming currently give? (Was Re: btrfs volume mounts and dies (was Re: Segfault in btrfsck))

2010-01-07 Thread Steve Freitas
Hi all, I was under the mistaken impression that btrfs checksumming, in its current default configuration, protected your data from bitrot. It appears this is not the case: On Wed, 2010-01-06 at 18:24 +0100, Johannes Hirte wrote: > Am Mittwoch 06 Januar 2010 16:59:55 schrieb Steve Frei

Re: btrfs volume mounts and dies (was Re: Segfault in btrfsck)

2010-01-06 Thread Steve Freitas
Hi Johannes, On Wed, 2010-01-06 at 18:24 +0100, Johannes Hirte wrote: > Am Mittwoch 06 Januar 2010 16:59:55 schrieb Steve Freitas: > > Thanks for your response. You're correct about the bad sector warning. > > So please correct me if I have some mistaken assumptions. I though

Re: btrfs volume mounts and dies (was Re: Segfault in btrfsck)

2010-01-06 Thread Steve Freitas
Hi Sander, On Wed, 2010-01-06 at 08:52 +0100, Sander wrote: > I don't have your original mail, but I think I remember you mentioned a > lot of bad sectors on that disk reported by SMART. > > If that is indeed the case it might be dificult for the people who might > be able to help you, to help yo

Re: btrfs volume mounts and dies (was Re: Segfault in btrfsck)

2010-01-05 Thread Steve Freitas
Should I take it by the lack of list response that I should just flush this partition down the toilet and start over? Or is everybody either flummoxed or on vacation? Steve On Sun, 2010-01-03 at 16:37 -0800, Steve Freitas wrote: > On Sun, 2010-01-03 at 14:57 -0800, Steve Freitas wrote: >

Re: btrfs volume mounts and dies (was Re: Segfault in btrfsck)

2010-01-03 Thread Steve Freitas
On Sun, 2010-01-03 at 14:57 -0800, Steve Freitas wrote: > Got some more information. I installed Debian on another disk ("rescue") > running 2.6.32, pulled the latest btrfs module code from git, applied an > earlier mentioned patch[1], then compiled and loaded the new module. &

btrfs volume mounts and dies (was Re: Segfault in btrfsck)

2010-01-03 Thread Steve Freitas
Got some more information. I installed Debian on another disk ("rescue") running 2.6.32, pulled the latest btrfs module code from git, applied an earlier mentioned patch[1], then compiled and loaded the new module. It's able to mount the volume initially... Jan 3 14:46:57 rescue kernel: [ 25.98

Segfault in btrfsck

2010-01-02 Thread Steve Freitas
I've got a Debian unstable system (kernel is 2.6.32-trunk-amd64) with the root partition running btrfs. Used it for a few weeks with no large problems, but had to reboot it this morning after it became unresponsive simultaneous with unexplained constant disk access. It wouldn't reboot -- it loaded