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mdadm



Jeg har en ubuntu server hvor mit disk array RAID1 med 2 diske hvor
den ene af og til gik ned. Så fik jeg den fejlede disk skiftet men det
gik stadig af og til ned.

Når den går ned kan jeg normalt redde det ved at lave følgende mdadm kommando:

"mdadm --remove /dev/md0 /dev/sdb1 && mdadm --add /dev/md0 /dev/sdb1

 cat /proc/mdstat med regelmæssige mellemrum og se hvad der sker

Da jeg så forsøgte dette i dag får jeg følgende besked:

mdadm: add new device failed for /dev/sdb1 as 2: Invalid argument

Kigger jeg i dmesg finder jeg følgende:
27.986983] Buffer I/O error on device sdb1, logical block 468744327
[732627.987917] sd 1:0:0:0: [sdb] Result: hostbyte=DID_BAD_TARGET
driverbyte=DRIVER_OK,SUGGEST_OK
[732627.987919] end_request: I/O error, dev sdb, sector 468744383
[732627.987921] Buffer I/O error on device sdb1, logical block 468744320
[732627.987949] Buffer I/O error on device sdb1, logical block 468744321
[732627.995614] sd 1:0:0:0: [sdb] Result: hostbyte=DID_BAD_TARGET
driverbyte=DRIVER_OK,SUGGEST_OK
[732627.995619] end_request: I/O error, dev sdb, sector 468744383
[732627.995641] sd 1:0:0:0: [sdb] Result: hostbyte=DID_BAD_TARGET
driverbyte=DRIVER_OK,SUGGEST_OK
[732627.995643] end_request: I/O error, dev sdb, sector 468744383
[732627.995647] md: disabled device sdb1, could not read superblock.
[732627.995649] md: sdb1 does not have a valid v0.90 superblock, not importing!
[732627.995652] md: md_import_device returned -22

fdisk -l /dev/sdb giver ikke  noget output ..

Kan jeg få sådan en superblock sat ind på sdb igen?

mvh
Gunner


 
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