* Neil Brown <neilb@cse.unsw.edu.au> [2003-03-20 01:26]: > On Thursday March 20, lists@schlich.org wrote: > > Hi, > > > > I just trashed my RAID5 array. The Promise IDE driver messed up > > sharing IRQs with a network interface card while writing a file to > > the array via the mentioned NIC card. > > Is any recovery possible? I wouldn't care about some lost > > megabytes... really. Thanks in advance! > > I recommend: > mdadm -A /dev/md1 --force /dev/sd[egik]1 I've just tried that. Looks better than before ;-) Here's the result: --8<-- [events: 00000038] md: bind<hde1,1> [events: 0000003a] md: bind<hdi1,2> [events: 0000003a] md: bind<hdk1,3> [events: 0000003a] md: bind<hdg1,4> md: hdg1's event counter: 0000003a md: hdk1's event counter: 0000003a md: hdi1's event counter: 0000003a md: hde1's event counter: 00000038 md: superblock update time inconsistency -- using the most recent one md: freshest: hdg1 md: kicking non-fresh hde1 from array! md: unbind<hde1,3> md: export_rdev(hde1) md1: removing former faulty hde1! md1: max total readahead window set to 768k md1: 3 data-disks, max readahead per data-disk: 256k raid5: device hdg1 operational as raid disk 0 raid5: device hdk1 operational as raid disk 3 raid5: device hdi1 operational as raid disk 2 raid5: md1, not all disks are operational -- trying to recover array raid5: allocated 4340kB for md1 raid5: raid level 5 set md1 active with 3 out of 4 devices, algorithm 2 RAID5 conf printout: --- rd:4 wd:3 fd:1 disk 0, s:0, o:1, n:0 rd:0 us:1 dev:hdg1 disk 1, s:0, o:0, n:1 rd:1 us:1 dev:[dev 00:00] disk 2, s:0, o:1, n:2 rd:2 us:1 dev:hdi1 disk 3, s:0, o:1, n:3 rd:3 us:1 dev:hdk1 RAID5 conf printout: --- rd:4 wd:3 fd:1 disk 0, s:0, o:1, n:0 rd:0 us:1 dev:hdg1 disk 1, s:0, o:0, n:1 rd:1 us:1 dev:[dev 00:00] disk 2, s:0, o:1, n:2 rd:2 us:1 dev:hdi1 disk 3, s:0, o:1, n:3 rd:3 us:1 dev:hdk1 md: updating md1 RAID superblock on device md: hdg1 [events: 0000003b]<6>(write) hdg1's sb offset: 117218176 md: recovery thread got woken up ... md1: no spare disk to reconstruct array! -- continuing in degraded mode md: recovery thread finished ... md: hdk1 [events: 0000003b]<6>(write) hdk1's sb offset: 117218176 md: hdi1 [events: 0000003b]<6>(write) hdi1's sb offset: 117218176 raid5: switching cache buffer size, 4096 --> 1024 raid5: switching cache buffer size, 1024 --> 4096 --8<-- And when I try to mount the array: --8<-- EXT3-fs error (device md(9,1)): ext3_check_descriptors: Block bitmap for group 509 not in group (block 4294967295)! EXT3-fs: group descriptors corrupted ! --8<-- What should I do now? Raidhotadd the 4th device? Run e2fsck prior to that or afterwards? Thanks in advance! -- Wolfram Schlich; Friedhofstr. 8, D-88069 Tettnang; +49-(0)178-SCHLICH - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
