Date: Sat, 2 Mar 2002 17:31:24 -0800 (PST) From: Brian Hazlehurst <brian@dcog.net> Message-ID: <Pine.LNX.4.30.0203021730100.7044-100000@kroeber.dcog.net> Subject: Re: [suse-sparc] RAID troubles
oops, it's appearing that my partition including the first cylinder (0)
may have been my problem....
On Sat, 2 Mar 2002, Brian Hazlehurst wrote:
>
>
> Actually, I've been using the "Linux native" partition type (83)
> rather than the "Linux RAID autodetect" -- although I did try this
> partition type earlier with the same results. My understanding is that
> this second type (fd) is only required if your device holds the boot
> partition, which mine does not.
>
> So, my typical fdisk output looks like this:
>
> Disk /dev/sde (Sun disk label): 16 heads, 135 sectors, 3880 cylinders
> Units = cylinders of 2160 * 512 bytes
>
> Device Flag Start End Blocks Id System
> /dev/sde1 0 3880 4190400 83 Linux native
> /dev/sde3 0 3880 4190400 5 Whole disk
>
>
>
>
>
> On Sun, 3 Mar 2002, nod wrote:
>
> >
> > to my unexpert eye the raidtab looks correct, but what I meant was have you
> > set the partition type correctly in fdisk e.g.
> >
> > # fdisk -l /dev/sde
> >
> > outputs :
> >
> > Disk /dev/hde: 16 heads, 63 sectors, 59560 cylinders
> > Units = cylinders of 1008 * 512 bytes
> >
> > Device Boot Start End Blocks Id System
> > /dev/sde1 * 1 40635 20480008+ fd Linux raid autodetect
> > /dev/sde2 40636 59560 9538200 fd Linux raid autodetect
> >
> > so that the systems identifies it correctly ?
> >
> >
> >
> >
> >
> > On Saturday 02 Mar 2002 10:58 pm, Brian Hazlehurst wrote:
> > > > could you include your raidtab and I'll compare it with mine. Also you
> > > > are setting the partition type correctly using fdisk ?
> > >
> > > I believe the partitions are being set right. The first partition (Linux
> > > native) is being used on each disk. The only other partition is a third
> > > partition (whole disk) which is required by Sun (as I understand it).
> > >
> > > If I don't create the RAID (with mkraid), then the disks each maintain
> > > their partition tables on reboot. If I do make the RAID, then everything
> > > appears fine, but on reboot the partitions are hosed.
> > >
> > > Here is the raidtab file:
> > >
> > > raiddev /dev/md0
> > > raid-level 5
> > > nr-raid-disks 7
> > > nr-spare-disks 1
> > > persistent-superblock 1
> > > parity-algorithm left-symmetric
> > > chunk-size 32
> > > device /dev/sde1
> > > raid-disk 0
> > > device /dev/sdf1
> > > raid-disk 1
> > > device /dev/sdg1
> > > raid-disk 2
> > > device /dev/sdh1
> > > raid-disk 3
> > > device /dev/sdi1
> > > raid-disk 4
> > > device /dev/sdj1
> > > raid-disk 5
> > > device /dev/sdk1
> > > raid-disk 6
> > > device /dev/sdl1
> > > spare-disk 0
> > >
> > > On Sat, 2 Mar 2002, nod wrote:
> > > > could you include your raidtab and I'll compare it with mine. Also you
> > > > are setting the partition type correctly using fdisk ?
> > > >
> > > > On Saturday 02 Mar 2002 2:07 am, Brian Hazlehurst wrote:
> > > > > Hi list,
> > > > >
> > > > > I make the raid device (mkraid, with a raidtab that specifies raid 5
> > > > > for 8 distinct drives, including one "spare").
> > > > >
> > > > > I create a file system (I've tried ext2 and reiser file systems).
> > > > >
> > > > > I reboot (sometimes, I've mounted the block device and successfully
> > > > > written to it first).
> > > > >
> > > > > Each time, on the reboot, the partition tables on most of the disks get
> > > > > "lost" (usually, the first and last disk seem to retain their partition
> > > > > tables), and the device is unusable.
> > > > >
> > > > > I'm not sure what's going on. Any suggestions? I'm running 7.3 and
> > > > > the raid is an array on a single scsi controller.
> > > > >
> > > > > -Brian
> > > > >
> > > > > brian@dcog.net
> > > >
> > > > --
> > > > To unsubscribe, e-mail: suse-sparc-unsubscribe@suse.com
> > > > For additional commands, e-mail: suse-sparc-help@suse.com
> >
>
>
> --
> To unsubscribe, e-mail: suse-sparc-unsubscribe@suse.com
> For additional commands, e-mail: suse-sparc-help@suse.com
>
-- To unsubscribe, e-mail: suse-sparc-unsubscribe@suse.com For additional commands, e-mail: suse-sparc-help@suse.com
This archive was generated by hypermail 2.1.0 : Sat Mar 02 2002 - 18:22:23 PST