Re: Nasty bug?

[Steve Lord <lord@sgi.com>]

On Fri, 2003-08-01 at 10:30, Bogdan Costescu wrote:
> On 1 Aug 2003, Paul Furness wrote:
> 
> > Aug  1 15:19:20 picard kernel:  I/O error: dev 08:00, sector 2789278339
> > Aug  1 15:19:20 picard kernel:  I/O error: dev 08:00, sector 2797666947
> > Aug  1 15:19:20 picard kernel:  I/O error: dev 08:00, sector 2806055555
> > Aug  1 15:19:20 picard kernel:  I/O error: dev 08:00, sector 2814444163
> > Aug  1 15:19:20 picard kernel:  I/O error: dev 08:00, sector 2822832771
> > Aug  1 15:19:20 picard kernel:  I/O error: dev 08:00, sector 2831221379
> > 
> > the last message repeats many many times (> 100) with different sector
> > numbers. As you can see, the sector numbers are not sequential, so it's
> > not a simple hardware failure.
> 
> The numbers are not sequential, but they are monotonically increasing :-)
> The difference between any 2 values is 8388608. Now if these are 512 byte 
> sectors, this is exactly 4294967296 bytes which is 2^32...
> 
> This won't help you directly... but might give somebody some idea :-)

Almost certainly mkfs trying to lay down the allocation group
headers in the filesystem, these would come out 4G apart.

Steve

-- 

Steve Lord                                      voice: +1-651-683-3511
Principal Engineer, Filesystem Software         email: lord@sgi.com