S4astliff4ik
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a@Nikita:~$ sudo losetup /dev/loop0 /media/4d8641bd-7f17-46e2-9667-6cc56f690e3e/wd/1/disk1_part4_data.part
[sudo] password for a:
a@Nikita:~$ sudo losetup /dev/loop1 /media/4d8641bd-7f17-46e2-9667-6cc56f690e3e/wd/2/disk2_part4_data.part
a@Nikita:~$ sudo losetup /dev/loop2 /media/90fa1edf-291b-4ee1-8a4f-6d09e23b9ed2/wd/3/disk3_part4_data.part
a@Nikita:~$ sudo losetup /dev/loop3 /media/ef34dbab-b74d-4b6d-9b5b-53e5be4132db/wd/4/disk4_part4_data.part
a@Nikita:~$ mdadm --examine /dev/loop0
mdadm: cannot open /dev/loop0: Permission denied
a@Nikita:~$ sudo mdadm --examine /dev/loop0
/dev/loop0:
Magic : a92b4efc
Version : 00.90.00
UUID : 4a101905:f7fdb0d8:0d56ccfb:89ce6f17
Creation Time : Wed Jun 24 14:03:40 2009
Raid Level : raid5
Used Dev Size : 975097920 (929.93 GiB 998.50 GB)
Array Size : 2925293760 (2789.78 GiB 2995.50 GB)
Raid Devices : 4
Total Devices : 4
Preferred Minor : 2
Update Time : Thu Sep 23 04:42:35 2010
State : clean
Active Devices : 4
Working Devices : 4
Failed Devices : 0
Spare Devices : 0
Checksum : 53a30f01 - correct
Events : 2369014
Layout : left-symmetric
Chunk Size : 64K
Number Major Minor RaidDevice State
this 3 8 52 3 active sync
0 0 8 4 0 active sync
1 1 8 20 1 active sync
2 2 8 36 2 active sync
3 3 8 52 3 active sync
a@Nikita:~$ sudo mdadm --examine /dev/loop1
/dev/loop1:
Magic : a92b4efc
Version : 00.90.00
UUID : 4a101905:f7fdb0d8:0d56ccfb:89ce6f17
Creation Time : Wed Jun 24 14:03:40 2009
Raid Level : raid5
Used Dev Size : 975097920 (929.93 GiB 998.50 GB)
Array Size : 2925293760 (2789.78 GiB 2995.50 GB)
Raid Devices : 4
Total Devices : 4
Preferred Minor : 2
Update Time : Thu Sep 23 04:42:35 2010
State : clean
Active Devices : 4
Working Devices : 4
Failed Devices : 0
Spare Devices : 0
Checksum : 53a30eef - correct
Events : 2369014
Layout : left-symmetric
Chunk Size : 64K
Number Major Minor RaidDevice State
this 2 8 36 2 active sync
0 0 8 4 0 active sync
1 1 8 20 1 active sync
2 2 8 36 2 active sync
3 3 8 52 3 active sync
a@Nikita:~$ sudo mdadm --examine /dev/loop2
/dev/loop2:
Magic : a92b4efc
Version : 00.90.00
UUID : 4a101905:f7fdb0d8:0d56ccfb:89ce6f17
Creation Time : Wed Jun 24 14:03:40 2009
Raid Level : raid5
Used Dev Size : 975097920 (929.93 GiB 998.50 GB)
Array Size : 2925293760 (2789.78 GiB 2995.50 GB)
Raid Devices : 4
Total Devices : 4
Preferred Minor : 2
Update Time : Fri Nov 26 23:48:06 2010
State : clean
Active Devices : 2
Working Devices : 2
Failed Devices : 2
Spare Devices : 0
Checksum : 53f88909 - correct
Events : 2369019
Layout : left-symmetric
Chunk Size : 64K
Number Major Minor RaidDevice State
this 1 7 2 1 active sync /dev/loop2
0 0 7 3 0 active sync /dev/loop3
1 1 7 2 1 active sync /dev/loop2
2 2 0 0 2 faulty removed
3 3 0 0 3 faulty removed
a@Nikita:~$ sudo mdadm --examine /dev/loop3
/dev/loop3:
Magic : a92b4efc
Version : 00.90.00
UUID : 4a101905:f7fdb0d8:0d56ccfb:89ce6f17
Creation Time : Wed Jun 24 14:03:40 2009
Raid Level : raid5
Used Dev Size : 975097920 (929.93 GiB 998.50 GB)
Array Size : 2925293760 (2789.78 GiB 2995.50 GB)
Raid Devices : 4
Total Devices : 4
Preferred Minor : 2
Update Time : Fri Nov 26 23:48:06 2010
State : clean
Active Devices : 2
Working Devices : 2
Failed Devices : 2
Spare Devices : 0
Checksum : 53f88908 - correct
Events : 2369019
Layout : left-symmetric
Chunk Size : 64K
Number Major Minor RaidDevice State
this 0 7 3 0 active sync /dev/loop3
0 0 7 3 0 active sync /dev/loop3
1 1 7 2 1 active sync /dev/loop2
2 2 0 0 2 faulty removed
3 3 0 0 3 faulty removed
a@Nikita:~$ sudo su -
root@Nikita:~# mdadm --assemble /dev/md1 --force /dev/loop0 /dev/loop1 /dev/loop2 /dev/loop3
mdadm: cannot open device /dev/loop0: Device or resource busy
mdadm: /dev/loop0 has no superblock - assembly aborted
root@Nikita:~# mdadm --assemble /dev/md1
mdadm: /dev/md1 not identified in config file.
root@Nikita:~# mdadm --assemble /dev/md0
mdadm: /dev/md0 not identified in config file.
root@Nikita:~# mdadm --assemble --scan
mdadm: /dev/md2 assembled from 2 drives - not enough to start the array.
root@Nikita:~# cat /proc/mdstat
Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10]
md2 : inactive loop3[0](S) loop0[3](S) loop1[2](S) loop2[1](S)
3901192192 blocks
unused devices: <none>
root@Nikita:~# mdadm --assemble /dev/md2 --force /dev/loop0 /dev/loop1 /dev/loop2 /dev/loop3
mdadm: forcing event count in /dev/loop1(2) from 2369014 upto 2369019
mdadm: forcing event count in /dev/loop0(3) from 2369014 upto 2369019
mdadm: clearing FAULTY flag for device 1 in /dev/md2 for /dev/loop1
mdadm: clearing FAULTY flag for device 0 in /dev/md2 for /dev/loop0
mdadm: failed to add /dev/loop2 to /dev/md2: Device or resource busy
mdadm: /dev/md2 has been started with 3 drives (out of 4).
root@Nikita:~# mkdir /olddata/
root@Nikita:~# mount -t ext3 /dev/md2 /olddata/
mount: wrong fs type, bad option, bad superblock on /dev/md2,
missing codepage or helper program, or other error
В некоторых случаях полезная информация может быть
найдена в syslog - попробуйте dmesg | tail или что-то
в этом роде
root@Nikita:~# ls /olddata/
root@Nikita:~# cat /proc/mdstat
Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10]
md2 : active raid5 loop2[4] loop3[0] loop0[3] loop1[2]
2925293760 blocks level 5, 64k chunk, algorithm 2 [4/3] [U_UU]
[>....................] recovery = 2.1% (20890980/975097920) finish=548.5min speed=28989K/sec
unused devices: <none>
root@Nikita:~# cat /proc/mdstat
Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10]
md2 : active raid5 loop2[4] loop3[0] loop0[3] loop1[2]
2925293760 blocks level 5, 64k chunk, algorithm 2 [4/3] [U_UU]
[>....................] recovery = 2.9% (28850416/975097920) finish=527.6min speed=29889K/sec
unused devices: <none>
root@Nikita:~# cat /proc/mdstat
Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10]
md2 : active raid5 loop2[4] loop3[0] loop0[3] loop1[2]
2925293760 blocks level 5, 64k chunk, algorithm 2 [4/3] [U_UU]
[=>...................] recovery = 7.5% (74025028/975097920) finish=500.3min speed=30013K/sec
unused devices: <none>
root@Nikita:~# cat /proc/mdstat
Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10]
md2 : active raid5 loop2[4] loop3[0] loop0[3] loop1[2]
2925293760 blocks level 5, 64k chunk, algorithm 2 [4/3] [U_UU]
[==>..................] recovery = 11.2% (109365488/975097920) finish=476.0min speed=30312K/sec
unused devices: <none>
root@Nikita:~# cat /proc/mdstat
Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10]
md2 : active raid5 loop2[1] loop3[0] loop0[3] loop1[2]
2925293760 blocks level 5, 64k chunk, algorithm 2 [4/4] [UUUU]
unused devices: <none>
root@Nikita:~# cat /proc/mdstat
Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10]
md2 : active raid5 loop2[1] loop3[0] loop0[3] loop1[2]
2925293760 blocks level 5, 64k chunk, algorithm 2 [4/4] [UUUU]
unused devices: <none>
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