On Monday, January 14, 2013 3:11 PM Dorau, Lukasz <lukasz.dorau@xxxxxxxxx> wrote: > On Monday, January 14, 2013 1:56 AM chris <tknchris@xxxxxxxxx> wrote: > > [292295.923942] bio: create slab <bio-1> at 1 > > [292295.923965] md/raid:md126: not clean -- starting background > > reconstruction > > [292295.924000] md/raid:md126: device sdb operational as raid disk 2 > > [292295.924005] md/raid:md126: device sdc operational as raid disk 1 > > [292295.924009] md/raid:md126: device sde operational as raid disk 0 > > [292295.925149] md/raid:md126: allocated 4250kB > > [292295.927268] md/raid:md126: cannot start dirty degraded array. > > Hi > > *Remember to backup the disks you have before trying the following! * > > You can try starting dirty degraded array using: > # mdadm --assemble --force .... > I meant adding --force option to: # mdadm --create --verbose --force /dev/md/Volume0 /dev/sdc missing /dev/sdb /dev/sdd --raid-devices 4 --level=5 Be very careful using "--force" option, because it can cause data corruption! Lukasz > See also the "Boot time assembly of degraded/dirty arrays" chapter in: > http://www.kernel.org/doc/Documentation/md.txt > (you can boot with option md-mod.start_dirty_degraded=1) > > Lukasz > > > > [292295.929666] RAID conf printout: > > [292295.929677] --- level:5 rd:4 wd:3 > > [292295.929683] disk 0, o:1, dev:sde > > [292295.929688] disk 1, o:1, dev:sdc > > [292295.929693] disk 2, o:1, dev:sdb > > [292295.930898] md/raid:md126: failed to run raid set. > > [292295.930902] md: pers->run() failed ... > > [292295.931079] md: md126 stopped. > > [292295.931096] md: unbind<sdb> > > [292295.944228] md: export_rdev(sdb) > > [292295.944267] md: unbind<sdc> > > [292295.958126] md: export_rdev(sdc) > > [292295.958167] md: unbind<sde> > > [292295.970902] md: export_rdev(sde) > > [292296.219837] device-mapper: table: 252:1: raid45: unknown target type > > [292296.219845] device-mapper: ioctl: error adding target to table > > [292296.291542] device-mapper: table: 252:1: raid45: unknown target type > > [292296.291548] device-mapper: ioctl: error adding target to table > > [292296.310926] quiet_error: 1116 callbacks suppressed > > [292296.310934] Buffer I/O error on device dm-0, logical block 3907022720 > > [292296.310940] Buffer I/O error on device dm-0, logical block 3907022721 > > [292296.310944] Buffer I/O error on device dm-0, logical block 3907022722 > > [292296.310949] Buffer I/O error on device dm-0, logical block 3907022723 > > [292296.310953] Buffer I/O error on device dm-0, logical block 3907022724 > > [292296.310958] Buffer I/O error on device dm-0, logical block 3907022725 > > [292296.310962] Buffer I/O error on device dm-0, logical block 3907022726 > > [292296.310966] Buffer I/O error on device dm-0, logical block 3907022727 > > [292296.310973] Buffer I/O error on device dm-0, logical block 3907022720 > > [292296.310977] Buffer I/O error on device dm-0, logical block 3907022721 > > [292296.319968] device-mapper: table: 252:1: raid45: unknown target type > > [292296.319975] device-mapper: ioctl: error adding target to table > > > > Any ideas from here? Am I up the creek without a paddle? :( > > > > thanks to everyone for all your help so far > > chris > > > > On Sun, Jan 13, 2013 at 4:05 PM, Dan Williams <djbw@xxxxxx> wrote: > > > > > > > > > On 1/13/13 11:00 AM, "chris" <tknchris@xxxxxxxxx> wrote: > > > > > >>Neil/Dave, > > >> > > >>Is it not possible to create imsm container with missing disk? > > >>If not, Is there any way to recreate the array with all disks but > > >>prevent any kind of sync which may overwrite array data? > > > > > > The example was in that link I sent: > > > > > > mdadm --create /dev/md/imsm /dev/sd[bde] -e imsm > > > mdadm --create /dev/md/vol0 /dev/sde missing /dev/sdb /dev/sdd -n 4 -l 5 > > > > > > The first command marks all devices as spares. The second creates the > > > degraded array. > > > > > > You probably want at least sdb and sdd in there since they have a copy of > > > the metadata. > > > > > > -- > > > Dan > > > > > -- > > To unsubscribe from this list: send the line "unsubscribe linux-raid" in > > the body of a message to majordomo@xxxxxxxxxxxxxxx > > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
