Re: A lot of NILFS: bad btree node messages (readonly fs)

[Piotr Szymaniak <szarpaj-TbOm9Ca2r9GrDJvtcaxF/A@public.gmane.org>]

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On Fri, Nov 30, 2012 at 10:09:04AM +0400, Vyacheslav Dubeyko wrote:
> Hi,
> 
> On Thu, 2012-11-29 at 22:06 +0100, Piotr Szymaniak wrote:
> > Hello.
> > 
> > Doing some work today (system update, kernel update, rsync rootfs with
> > external drive) I noticed some unwanted behaviour:
> > maszn ~ # touch afile
> > touch: cannot touch ‘afile’: System plików wyłącznie do odczytu
> >                         it's Read only filesystem
> > 
> > dmesg shows a lot (1812 in the log) of:
> > [ 8288.319012] NILFS: bad btree node (blocknr=26229286): level = 178,
> > flags = 0x0, nchildren = 0
> > [ 8288.319017] NILFS error (device sda2): nilfs_bmap_lookup_contig:
> > broken bmap (inode number=102230)
> > 
> > After mount -o remount,rw /
> > [ 8384.734024] segctord starting. Construction interval = 300 seconds,
> > CP frequency < 30 seconds
> > [ 8384.734028] NILFS warning: mounting fs with errors
> > 
> > Never happend before and it looks like it works fine now (using vanilla
> > kernel 3.6.4).
> > 
> > After a reboot (to vanilla kernel 3.6.8) dmesg shows:
> > [    6.046883] segctord starting. Construction interval = 300 seconds,
> > CP frequency < 30 seconds
> > [    6.046884] NILFS warning: mounting fs with errors
> > 
> > I don't like the "errors" part...
> > 
> 
> Can you reproduce this issue (I mean that the issue reproducible or
> not)? Have you any side effects of the issue such as data loss or any
> other bad things?

It was the first time, but I sure will update my system and kernel in
few days, so if this was related to disk-intense work maybe it could be
reproduced.

Didn't noticed any data loss (at least my system works and kernel boots
the way it should). But I will check last updated packages to see if
there's something wrong.


Piotr Szymaniak.
-- 
Nagle zdalam sobie sprawe, ze wszyscy mezczyzni,  ktorzy wciskaja sie w
cialo  kobiety sila,  podstepem czy szantazem,  ktorzy rzna kobiete nie
kochajac  jej,  sa  gwalcicielami.   Przestepcami  godnymi  najwyzszych
wyrokow.
  -- Graham Masterton, "Famine"

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