Hi,
i'v moved my four raid5 discs from one system to another. There is a
dmcrypt/luks encrypted xfs on it.
mdadm seems to autodetect everything correctly:
cat /proc/mdstat
Personalities : [raid6] [raid5] [raid4]
md0 : active raid5 sdd1[1] sdc1[3] sdb1[0] sda1[2]
4395407808 blocks level 5, 64k chunk, algorithm 2 [4/4] [UUUU]
mdadm /dev/md0
/dev/md0: 4191.79GiB raid5 4 devices, 0 spares. Use mdadm --detail for
more detail.
But 'mdadm /dev/md0 --detail' outputs nothing.
The last lines of strace are:
open("/dev/md0", O_RDWR) = 3
fstat(3, {st_mode=S_IFBLK|0660, st_rdev=makedev(9, 0), ...}) = 0
ioctl(3, 0x800c0910, 0x7fff923a4a40) = 0
close(3) = 0
exit_group(0) = ?
And luksOpen fails:
ryptsetup luksOpen /dev/md0 data
Enter LUKS passphrase for /dev/md0:
Command failed: /dev/md0 is not a LUKS partition
fdisk looks ok but it cant find a partition table, but that might be
normal for a raw dmcrypt disc:
fdisk -l /dev/md0
Disk /dev/md0: 4500.9 GB, 4500897595392 bytes
2 heads, 4 sectors/track, 1098851952 cylinders
Units = cylinders of 8 * 512 = 4096 bytes
Disk identifier: 0xc1f586ec
Disk /dev/md0 doesn't contain a valid partition table
Last but not least the relevant lines of dmesg:
[ 2.337382] sd 0:0:0:0: [sda] 2930277168 512-byte hardware sectors
(1500302 MB)
[ 2.337454] sd 0:0:0:0: [sda] Write Protect is off
[ 2.337495] sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
[ 2.337526] sd 0:0:0:0: [sda] Write cache: enabled, read cache:
enabled, doesn't support DPO or FUA
[ 2.337638] sd 0:0:0:0: [sda] 2930277168 512-byte hardware sectors
(1500302 MB)
[ 2.337709] sd 0:0:0:0: [sda] Write Protect is off
[ 2.337750] sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
[ 2.337782] sd 0:0:0:0: [sda] Write cache: enabled, read cache:
enabled, doesn't support DPO or FUA
[ 2.337840] sda: sda1
[ 2.346341] sd 0:0:0:0: [sda] Attached SCSI disk
[ 2.347128] scsi 0:0:1:0: Direct-Access ATA SAMSUNG HD154UI
1AG0 PQ: 0 ANSI: 5
[ 2.347329] sd 0:0:1:0: [sdb] 2930277168 512-byte hardware sectors
(1500302 MB)
[ 2.347399] sd 0:0:1:0: [sdb] Write Protect is off
[ 2.347441] sd 0:0:1:0: [sdb] Mode Sense: 00 3a 00 00
[ 2.347472] sd 0:0:1:0: [sdb] Write cache: enabled, read cache:
enabled, doesn't support DPO or FUA
[ 2.347583] sd 0:0:1:0: [sdb] 2930277168 512-byte hardware sectors
(1500302 MB)
[ 2.347652] sd 0:0:1:0: [sdb] Write Protect is off
[ 2.347694] sd 0:0:1:0: [sdb] Mode Sense: 00 3a 00 00
[ 2.347724] sd 0:0:1:0: [sdb] Write cache: enabled, read cache:
enabled, doesn't support DPO or FUA
[ 2.347782] sdb: sdb1
[ 2.354690] sd 0:0:1:0: [sdb] Attached SCSI disk
[ 2.354852] scsi 1:0:0:0: Direct-Access ATA SAMSUNG HD154UI
1AG0 PQ: 0 ANSI: 5
[ 2.355065] sd 1:0:0:0: [sdc] 2930277168 512-byte hardware sectors
(1500302 MB)
[ 2.355135] sd 1:0:0:0: [sdc] Write Protect is off
[ 2.355176] sd 1:0:0:0: [sdc] Mode Sense: 00 3a 00 00
[ 2.355207] sd 1:0:0:0: [sdc] Write cache: enabled, read cache:
enabled, doesn't support DPO or FUA
[ 2.355315] sd 1:0:0:0: [sdc] 2930277168 512-byte hardware sectors
(1500302 MB)
[ 2.355385] sd 1:0:0:0: [sdc] Write Protect is off
[ 2.355426] sd 1:0:0:0: [sdc] Mode Sense: 00 3a 00 00
[ 2.355458] sd 1:0:0:0: [sdc] Write cache: enabled, read cache:
enabled, doesn't support DPO or FUA
[ 2.355516] sdc: sdc1
[ 2.359050] sd 1:0:0:0: [sdc] Attached SCSI disk
[ 2.359207] scsi 1:0:1:0: Direct-Access ATA SAMSUNG HD154UI
1AG0 PQ: 0 ANSI: 5
[ 2.359419] sd 1:0:1:0: [sdd] 2930277168 512-byte hardware sectors
(1500302 MB)
[ 2.359488] sd 1:0:1:0: [sdd] Write Protect is off
[ 2.359530] sd 1:0:1:0: [sdd] Mode Sense: 00 3a 00 00
[ 2.359560] sd 1:0:1:0: [sdd] Write cache: enabled, read cache:
enabled, doesn't support DPO or FUA
[ 2.359669] sd 1:0:1:0: [sdd] 2930277168 512-byte hardware sectors
(1500302 MB)
[ 2.359739] sd 1:0:1:0: [sdd] Write Protect is off
[ 2.359780] sd 1:0:1:0: [sdd] Mode Sense: 00 3a 00 00
[ 2.359812] sd 1:0:1:0: [sdd] Write cache: enabled, read cache:
enabled, doesn't support DPO or FUA
[ 2.359869] sdd: sdd1
[ 2.371875] sd 1:0:1:0: [sdd] Attached SCSI disk
....
[ 2.483365] raid6: int64x1 1546 MB/s
[ 2.540031] raid6: int64x2 2087 MB/s
[ 2.596698] raid6: int64x4 1932 MB/s
[ 2.653362] raid6: int64x8 1374 MB/s
[ 2.710007] raid6: sse2x1 2547 MB/s
[ 2.766684] raid6: sse2x2 2934 MB/s
[ 2.823348] raid6: sse2x4 4818 MB/s
[ 2.823388] raid6: using algorithm sse2x4 (4818 MB/s)
[ 2.823430] md: raid6 personality registered for level 6
[ 2.823471] md: raid5 personality registered for level 5
[ 2.823512] md: raid4 personality registered for level 4
[ 2.823680] device-mapper: ioctl: 4.14.0-ioctl (2008-04-23)
initialised: dm-devel@xxxxxxxxxx
....
[ 2.826163] md: Autodetecting RAID arrays.
[ 2.919851] md: Scanned 4 and added 4 devices.
[ 2.919898] md: autorun ...
[ 2.919941] md: considering sdd1 ...
[ 2.919998] md: adding sdd1 ...
[ 2.920054] md: adding sdc1 ...
[ 2.920102] md: adding sdb1 ...
[ 2.920156] md: adding sda1 ...
[ 2.920195] md: created md0
[ 2.920232] md: bind<sda1>
[ 2.920282] md: bind<sdb1>
[ 2.920327] md: bind<sdc1>
[ 2.920395] md: bind<sdd1>
[ 2.920441] md: running: <sdd1><sdc1><sdb1><sda1>
[ 2.920662] raid5: device sdd1 operational as raid disk 1
[ 2.920704] raid5: device sdc1 operational as raid disk 3
[ 2.920745] raid5: device sdb1 operational as raid disk 0
[ 2.920787] raid5: device sda1 operational as raid disk 2
[ 2.921299] raid5: allocated 4268kB for md0
[ 2.921339] raid5: raid level 5 set md0 active with 4 out of 4
devices, algorithm 2
[ 2.921394] RAID5 conf printout:
[ 2.921432] --- rd:4 wd:4
[ 2.921470] disk 0, o:1, dev:sdb1
[ 2.921509] disk 1, o:1, dev:sdd1
[ 2.921548] disk 2, o:1, dev:sda1
[ 2.921587] disk 3, o:1, dev:sdc1
[ 2.921703] md: ... autorun DONE.
Any ideas how I could debug that further?
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