vs-4080

vs-4080

[Raymond A. Meijer]

Hello,

This morning I found the following warning on my Debian server holding a 253
GB Debian archive mirror:

ReiserFS: dm-8: warning: vs-4080: reiserfs_free_block: free_block (dm-8:46707368)[dev:blocknr]: bit already cleared

If fixed it with --fix-fixable, but what was it and what does it mean?


Thanks,

Ray

Re: vs-4080

[Vladimir V. Saveliev]

Hello

On Wed, 2006-01-11 at 11:09 +0200, Raymond A. Meijer wrote:
> Hello,
> 
> This morning I found the following warning on my Debian server holding a 253
> GB Debian archive mirror:
> 
> ReiserFS: dm-8: warning: vs-4080: reiserfs_free_block: free_block (dm-8:46707368)[dev:blocknr]: bit already cleared
> 
> If fixed it with --fix-fixable, but what was it and what does it mean?
> 

This indicated a corruption in disk space allocation bitmap: used block
was marked as free.
Am I correct that you got only one such message?
Do you run reiserfsck regularly on that filesystem?

> 
> Thanks,
> 
> Ray
> 

Re: vs-4080

[Raymond A. Meijer]

On Tue 17 Jan 2006 23:32, Vladimir V. Saveliev wrote:

Hi Vladimir,

> > ReiserFS: dm-8: warning: vs-4080: reiserfs_free_block: free_block
> > (dm-8:46707368)[dev:blocknr]: bit already cleared

> This indicated a corruption in disk space allocation bitmap: used block
> was marked as free.

I see..

> Am I correct that you got only one such message?

Yes, only one.

> Do you run reiserfsck regularly on that filesystem?

I hadn't run it for several months indeed...

Should I run it more often?


Ray

Re: vs-4080

[Vladimir V. Saveliev]

Hello

On Tue, 2006-01-17 at 17:11 +0200, Raymond A. Meijer wrote:
> On Tue 17 Jan 2006 23:32, Vladimir V. Saveliev wrote:
> 
> Hi Vladimir,
> 
> > > ReiserFS: dm-8: warning: vs-4080: reiserfs_free_block: free_block
> > > (dm-8:46707368)[dev:blocknr]: bit already cleared
> 
> > This indicated a corruption in disk space allocation bitmap: used block
> > was marked as free.
> 
> I see..
> 
> > Am I correct that you got only one such message?
> 
> Yes, only one.
> 
> > Do you run reiserfsck regularly on that filesystem?
> 
> I hadn't run it for several months indeed...
> 
> Should I run it more often?
> 
> 

It would be interesting to check the filesystem after a week of regular
load to see whether new such corruptions appeared.

Re: vs-4080

[Raymond A. Meijer]

On Thu 19 Jan 2006 3:09, Vladimir V. Saveliev wrote:

> > > > ReiserFS: dm-8: warning: vs-4080: reiserfs_free_block: free_block
> > > > (dm-8:46707368)[dev:blocknr]: bit already cleared

> It would be interesting to check the filesystem after a week of regular
> load to see whether new such corruptions appeared.

No problems so far:

reiserfsck --fix-fixable started at Fri Jan 20 12:08:21 2006
###########
Replaying journal..
Reiserfs journal '/dev/debian/mirror' in blocks [18..8211]: 0 transactions replayed
Checking internal tree..finished
Comparing bitmaps..finished
Checking Semantic tree:
finished
No corruptions found
There are on the filesystem:
        Leaves 118509
        Internal nodes 806
        Directories 36322
        Other files 570374
        Data block pointers 67438522 (0 of them are zero)
        Safe links 0
###########
reiserfsck finished at Fri Jan 20 12:30:05 2006


Thanks,

Ray

Re: vs-4080

[Raymond A. Meijer]

On Fri 20 Jan 2006 13:02, Raymond A. Meijer wrote:

> > > > > ReiserFS: dm-8: warning: vs-4080: reiserfs_free_block: free_block
> > > > > (dm-8:46707368)[dev:blocknr]: bit already cleared

> > It would be interesting to check the filesystem after a week of regular
> > load to see whether new such corruptions appeared.

> No problems so far:
>
> reiserfsck --fix-fixable started at Fri Jan 20 12:08:21 2006

[...]

> reiserfsck finished at Fri Jan 20 12:30:05 2006

Still no problems:

reiserfsck --fix-fixable started at Fri Feb  3 13:14:52 2006
###########
Replaying journal..
Reiserfs journal '/dev/debian/mirror' in blocks [18..8211]: 0 transactions replayed
Checking internal tree..finished
Comparing bitmaps..finished
Checking Semantic tree:
finished
No corruptions found
There are on the filesystem:
        Leaves 121472
        Internal nodes 820
        Directories 36818
        Other files 581476
        Data block pointers 68825551 (0 of them are zero)
        Safe links 0
###########
reiserfsck finished at Fri Feb  3 13:37:21 2006


Ray

Re: vs-4080

[Jeffrey Mahoney]

Raymond A. Meijer wrote:
> Hello,
> 
> This morning I found the following warning on my Debian server holding a 253
> GB Debian archive mirror:
> 
> ReiserFS: dm-8: warning: vs-4080: reiserfs_free_block: free_block (dm-8:46707368)[dev:blocknr]: bit already cleared
> 
> If fixed it with --fix-fixable, but what was it and what does it mean?

What kernel version are you using for this node? I've been developing
the on-demand bitmap patches and have been getting one of these under
heavy sustained load. I've assumed that it was a result of my patches,
but I'm curious what kernel you're running.

Are you running a -mm kernel, stock, or vendor? Which version?

Thanks.

-Jeff

--
Jeff Mahoney
jeffm@suse.com

Re: vs-4080

[Raymond A. Meijer]

On Tue 24 Jan 2006 6:43, Jeffrey Mahoney wrote:

Hi Jeff,

> > ReiserFS: dm-8: warning: vs-4080: reiserfs_free_block: free_block
> > (dm-8:46707368)[dev:blocknr]: bit already cleared

> What kernel version are you using for this node? I've been developing
> the on-demand bitmap patches and have been getting one of these under
> heavy sustained load. I've assumed that it was a result of my patches,
> but I'm curious what kernel you're running.
>
> Are you running a -mm kernel, stock, or vendor? Which version?

I'm running 2.6.15-cks1 on this machine.


Thanks,

Ray