Thread: More MDADM problems.

i having issues raid5mdadm, either dropping drive or getting slow reads. replaced sata card 2 drives connected to, , working fine. left last night rebuilding, , woke morning , failed. saying have 2 drives spare , 4 raid, won't go anywhere further. i've read can create again, i'd reassurances won't lose data doing that. here mdadm --examine of drives in question, followed --assemble --scan --verbose. appreciate advice/help.

sudo mdadm --examine /dev/sd[bcdefg]1
/dev/sdb1:
magic : a92b4efc
version : 0.90.00
uuid : 0d88f71a:0f8c6eb8:7506fbc4:05ba3487
creation time : sun aug 29 20:21:44 2010
raid level : raid5
used dev size : 1465135936 (1397.26 gib 1500.30 gb)
array size : 7325679680 (6986.31 gib 7501.50 gb)
raid devices : 6
total devices : 6
preferred minor : 0

update time : wed jun 29 07:47:10 2011
state : clean
active devices : 4
working devices : 6
failed devices : 2
spare devices : 2
checksum : 32dfc95c - correct
events : 86546

layout : left-symmetric
chunk size : 64k

number major minor raiddevice state
2 8 17 2 active sync /dev/sdb1

0 0 8 49 0 active sync /dev/sdd1
1 1 8 33 1 active sync /dev/sdc1
2 2 8 17 2 active sync /dev/sdb1
3 3 8 97 3 active sync /dev/sdg1
4 4 0 0 4 faulty removed
5 5 0 0 5 faulty removed
6 6 8 81 6 spare /dev/sdf1
7 7 8 65 7 spare /dev/sde1
/dev/sdc1:
magic : a92b4efc
version : 0.90.00
uuid : 0d88f71a:0f8c6eb8:7506fbc4:05ba3487
creation time : sun aug 29 20:21:44 2010
raid level : raid5
used dev size : 1465135936 (1397.26 gib 1500.30 gb)
array size : 7325679680 (6986.31 gib 7501.50 gb)
raid devices : 6
total devices : 6
preferred minor : 0

update time : wed jun 29 07:47:10 2011
state : clean
active devices : 4
working devices : 6
failed devices : 2
spare devices : 2
checksum : 32dfc96a - correct
events : 86546

layout : left-symmetric
chunk size : 64k

number major minor raiddevice state
1 8 33 1 active sync /dev/sdc1

0 0 8 49 0 active sync /dev/sdd1
1 1 8 33 1 active sync /dev/sdc1
2 2 8 17 2 active sync /dev/sdb1
3 3 8 97 3 active sync /dev/sdg1
4 4 0 0 4 faulty removed
5 5 0 0 5 faulty removed
6 6 8 81 6 spare /dev/sdf1
7 7 8 65 7 spare /dev/sde1
/dev/sdd1:
magic : a92b4efc
version : 0.90.00
uuid : 0d88f71a:0f8c6eb8:7506fbc4:05ba3487
creation time : sun aug 29 20:21:44 2010
raid level : raid5
used dev size : 1465135936 (1397.26 gib 1500.30 gb)
array size : 7325679680 (6986.31 gib 7501.50 gb)
raid devices : 6
total devices : 6
preferred minor : 0

update time : wed jun 29 07:47:10 2011
state : clean
active devices : 4
working devices : 6
failed devices : 2
spare devices : 2
checksum : 32dfc978 - correct
events : 86546

layout : left-symmetric
chunk size : 64k

number major minor raiddevice state
0 8 49 0 active sync /dev/sdd1

0 0 8 49 0 active sync /dev/sdd1
1 1 8 33 1 active sync /dev/sdc1
2 2 8 17 2 active sync /dev/sdb1
3 3 8 97 3 active sync /dev/sdg1
4 4 0 0 4 faulty removed
5 5 0 0 5 faulty removed
6 6 8 81 6 spare /dev/sdf1
7 7 8 65 7 spare /dev/sde1
/dev/sde1:
magic : a92b4efc
version : 0.90.00
uuid : 0d88f71a:0f8c6eb8:7506fbc4:05ba3487
creation time : sun aug 29 20:21:44 2010
raid level : raid5
used dev size : 1465135936 (1397.26 gib 1500.30 gb)
array size : 7325679680 (6986.31 gib 7501.50 gb)
raid devices : 6
total devices : 6
preferred minor : 0

update time : wed jun 29 07:47:10 2011
state : clean
active devices : 4
working devices : 6
failed devices : 2
spare devices : 2
checksum : 32dfc990 - correct
events : 86546

layout : left-symmetric
chunk size : 64k

number major minor raiddevice state
7 8 65 7 spare /dev/sde1

0 0 8 49 0 active sync /dev/sdd1
1 1 8 33 1 active sync /dev/sdc1
2 2 8 17 2 active sync /dev/sdb1
3 3 8 97 3 active sync /dev/sdg1
4 4 0 0 4 faulty removed
5 5 0 0 5 faulty removed
6 6 8 81 6 spare /dev/sdf1
7 7 8 65 7 spare /dev/sde1
/dev/sdf1:
magic : a92b4efc
version : 0.90.00
uuid : 0d88f71a:0f8c6eb8:7506fbc4:05ba3487
creation time : sun aug 29 20:21:44 2010
raid level : raid5
used dev size : 1465135936 (1397.26 gib 1500.30 gb)
array size : 7325679680 (6986.31 gib 7501.50 gb)
raid devices : 6
total devices : 6
preferred minor : 0

update time : wed jun 29 07:47:10 2011
state : clean
active devices : 4
working devices : 6
failed devices : 2
spare devices : 2
checksum : 32dfc99e - correct
events : 86546

layout : left-symmetric
chunk size : 64k

number major minor raiddevice state
6 8 81 6 spare /dev/sdf1

0 0 8 49 0 active sync /dev/sdd1
1 1 8 33 1 active sync /dev/sdc1
2 2 8 17 2 active sync /dev/sdb1
3 3 8 97 3 active sync /dev/sdg1
4 4 0 0 4 faulty removed
5 5 0 0 5 faulty removed
6 6 8 81 6 spare /dev/sdf1
7 7 8 65 7 spare /dev/sde1
/dev/sdg1:
magic : a92b4efc
version : 0.90.00
uuid : 0d88f71a:0f8c6eb8:7506fbc4:05ba3487
creation time : sun aug 29 20:21:44 2010
raid level : raid5
used dev size : 1465135936 (1397.26 gib 1500.30 gb)
array size : 7325679680 (6986.31 gib 7501.50 gb)
raid devices : 6
total devices : 6
preferred minor : 0

update time : wed jun 29 07:47:10 2011
state : clean
active devices : 4
working devices : 6
failed devices : 2
spare devices : 2
checksum : 32dfc9ae - correct
events : 86546

layout : left-symmetric
chunk size : 64k

number major minor raiddevice state
3 8 97 3 active sync /dev/sdg1

0 0 8 49 0 active sync /dev/sdd1
1 1 8 33 1 active sync /dev/sdc1
2 2 8 17 2 active sync /dev/sdb1
3 3 8 97 3 active sync /dev/sdg1
4 4 0 0 4 faulty removed
5 5 0 0 5 faulty removed
6 6 8 81 6 spare /dev/sdf1
7 7 8 65 7 spare /dev/sde1

sudo mdadm --assemble --scan --verbose
mdadm: looking devices /dev/md0
mdadm: /dev/sdb1 identified member of /dev/md0, slot 2.
mdadm: /dev/sdc1 identified member of /dev/md0, slot 1.
mdadm: /dev/sdd1 identified member of /dev/md0, slot 0.
mdadm: /dev/sde1 identified member of /dev/md0, slot 7.
mdadm: /dev/sdf1 identified member of /dev/md0, slot 6.
mdadm: /dev/sdg1 identified member of /dev/md0, slot 3.
mdadm: added /dev/sdc1 /dev/md0 1
mdadm: added /dev/sdb1 /dev/md0 2
mdadm: added /dev/sdg1 /dev/md0 3
mdadm: no uptodate device slot 4 of /dev/md0
mdadm: no uptodate device slot 5 of /dev/md0
mdadm: added /dev/sdf1 /dev/md0 6
mdadm: added /dev/sde1 /dev/md0 7
mdadm: added /dev/sdd1 /dev/md0 0
mdadm: /dev/md0 assembled 4 drives , 2 spares - not enough start array.

Forum The Ubuntu Forum Community Ubuntu Official Flavours Support General Help [SOLVED] More MDADM problems.

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