Ideally a different HBA altogether, but a different channel on a
multichannel HBA at a minimum. If your SCSI card is not a multichannel
card, think about getting one or think about a completely different
arrangement.
It may be possible to tune the HBA reset behavior or the XFS timeout
threshold but as a matter of principle when constructing disk mirrors
you should try to keep the disks as separate as possible. You should
only need to tune, tweak or patch if you are trying to do something
unusual - which you are not.
In the short term, unplug the failing disk:
Jan 10 11:56:06 linux-sg2 kernel: SCSI disk error : host 0 channel 0 id 0 lun 47
You are better off without it if your system is crashing.
-Kanoa
On Thu, 20 Jan 2005, David Dougall wrote:
> By "different controller" do you mean HBA controller or disk controller?
> The disk devices are on completely different jbods. They are both through
> the same HBA(the server only has 1 PCI slot)
> --David Dougall
>
>
> On Thu, 20 Jan 2005, Kanoa Withington wrote:
>
> >
> > Yes, that's a standard XFS timeout and shutdown. If your second disk
> > is on the sme SCSI channel try moving it to a different one,
> > preferably a different controller alotgether.
> >
> > Your disk 08:10 does have real problems, but they are separate from
> > the XFS shutdown which should be prevented by the MD layer.
> >
> > -Kanoa
> >
> > On Thu, 20 Jan 2005, David Dougall wrote:
> >
> >
> > > return code = 8000002
> > > Jan 10 11:56:08 linux-sg2 kernel: Info fld=0xc7c0181, Current sd08:10:
> > > sense key
> > > Hardware Error
> > > Jan 10 11:56:08 linux-sg2 kernel: I/O error: dev 08:10, sector 209453441
> > > Jan 10 11:56:08 linux-sg2 kernel: I/O error in filesystem
> > > ("device-mapper(254,1)
> > > ") meta-data dev device-mapper(254,1) block 0x18fa318f
> > > ("xlog_iodone") err
> > > or 5 buf count 2048
> > > Jan 10 11:56:08 linux-sg2 kernel:
> > > xfs_force_shutdown(device-mapper(254,1),0x2) c
> > > alled from line 966 of file xfs_log.c. Return address = 0xc0246d9b
> > > Jan 10 11:56:08 linux-sg2 kernel: Filesystem "device-mapper(254,1)": Log
> > > I/O Err
> > > or Detected. Shutting down filesystem: device-mapper(254,1)
> > > Jan 10 11:56:08 linux-sg2 kernel: Please umount the filesystem, and
> > > rectify the
> > > problem(s)
> > >
> > >
> > > I don't see any error messages from md in any of these logs.
> > > --David Dougall
> > >
> > >
> >
> >
> >
>
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