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Re: [TEKNIK] mdadm



On 15/06/2011, at 20.06, Gunner wrote:

> 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.

så er fejlen nok et andet sted, prøv i kablet eller controlleren, måske psu, eller strømstikket.


> 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?

det sker normalt automatisk ved add. Din sdb ser ud til at være defekt.


 
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