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Old 02-17-2012, 04:46 PM
SIMON Imre Kristof
 
Default Bug#660258: md truncates devices

Package: linux-image-2.6.32-5-amd64
Version: 2.6.32-41


I have got a 32T raid0 md device (with 2.6.32-39):

failure:/home/thuthu# mdadm --detail /dev/md200
/dev/md200:
Version : 0.90
Creation Time : Tue Dec 14 09:59:58 2010
Raid Level : raid0
Array Size : 35093139072 (33467.43 GiB 35935.37 GB)
Raid Devices : 3
Total Devices : 3
Preferred Minor : 200
Persistence : Superblock is persistent

Update Time : Tue Dec 14 09:59:58 2010
State : clean
Active Devices : 3
Working Devices : 3
Failed Devices : 0
Spare Devices : 0

Chunk Size : 64K

UUID : db733d82:63962b6c:9d4deba6:47ca997f
Events : 0.1

Number Major Minor RaidDevice State
0 8 3 0 active sync /dev/sda3
1 8 19 1 active sync /dev/sdb3
2 8 35 2 active sync /dev/sdc3

failure:/home/thuthu# cat /proc/partitions
major minor #blocks name

8 0 11718684672 sda
8 1 10484736 sda1
8 2 10485760 sda2
8 3 11697713135 sda3
8 4 992 sda4
8 16 11718684672 sdb
8 17 10484736 sdb1
8 18 10485760 sdb2
8 19 11697713135 sdb3
8 20 992 sdb4
8 32 11718684672 sdc
8 33 10484736 sdc1
8 34 10485760 sdc2
8 35 11697713135 sdc3
8 36 992 sdc4
9 200 35093139072 md200






after upgrade to 6.0.4 (2.6.32-41) 3*4T :


failure:/home/thuthu# cat /proc/partitions
major minor #blocks name

8 0 11718684672 sda
8 1 10484736 sda1
8 2 10485760 sda2
8 3 11697713135 sda3
8 4 992 sda4
8 16 11718684672 sdb
8 17 10484736 sdb1
8 18 10485760 sdb2
8 19 11697713135 sdb3
8 20 992 sdb4
8 32 11718684672 sdc
8 33 10484736 sdc1
8 34 10485760 sdc2
8 35 11697713135 sdc3
8 36 992 sdc4
9 200 12884901696 md200


Feb 9 02:24:41 failure kernel: [ 7.412198] md: bind<sdb3>
Feb 9 02:24:41 failure kernel: [ 7.412498] md: bind<sdc3>
Feb 9 02:24:41 failure kernel: [ 7.412779] md: bind<sda3>
Feb 9 02:24:41 failure kernel: [ 7.414642] raid0: looking at sda3
Feb 9 02:24:41 failure kernel: [ 7.414703] raid0: comparing sda3(8589934464)
Feb 9 02:24:41 failure kernel: [ 7.414742] with sda3(8589934464)
Feb 9 02:24:41 failure kernel: [ 7.414837] raid0: END
Feb 9 02:24:41 failure kernel: [ 7.414887] raid0: ==> UNIQUE
Feb 9 02:24:41 failure kernel: [ 7.414938] raid0: 1 zones
Feb 9 02:24:41 failure kernel: [ 7.414988] raid0: looking at sdc3
Feb 9 02:24:41 failure kernel: [ 7.415040] raid0: comparing sdc3(8589934464)
Feb 9 02:24:41 failure kernel: [ 7.415079] with sda3(8589934464)
Feb 9 02:24:41 failure kernel: [ 7.415174] raid0: EQUAL
Feb 9 02:24:41 failure kernel: [ 7.415224] raid0: looking at sdb3
Feb 9 02:24:41 failure kernel: [ 7.415276] raid0: comparing sdb3(8589934464)
Feb 9 02:24:41 failure kernel: [ 7.415315] with sda3(8589934464)
Feb 9 02:24:41 failure kernel: [ 7.415411] raid0: EQUAL
Feb 9 02:24:41 failure kernel: [ 7.415461] raid0: FINAL 1 zones
Feb 9 02:24:41 failure kernel: [ 7.415514] raid0: done.
Feb 9 02:24:41 failure kernel: [ 7.415563] raid0 : md_size is 25769803392 sectors.
Feb 9 02:24:41 failure kernel: [ 7.415618] ******* md200 configuration
*********




Imre Simon



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