Hi Pedro,

Wed, 02 Jul 2014 15:14:06 +0100
Pedro Teixeira [off-list ref] ==> Lars Täuber [off-list ref] :

Hi Lars,

the output of those commands:

root@nas3:/# cat /sys/block/sdb/queue/physical_block_size
4096
root@nas3:/# cat /sys/block/md0/queue/physical_block_size
4096
root@nas3:/#

The strange thing here is that dmesg is not poluted with sata errors  
like it is usual when a hard disk has bad sectors or some other  
hardware problem. the only thing in dmesg that hints to why reading  
the md volume fails are from dm itself.

maybe because the controller-drive combination doesn't fit.
Does the controller tell some errors?
The LSI 9201-i16 compatibility list doesn't mention any 4k SATA drive.
Only 3 4k-SAS drives (seagate though) are mentioned to be compatible.

Maybe that's the cause?

Good luck
Lars

Cheers
Pedro


Citando Lars Täuber

quoted

Hi Pedro,

maybe an issue with the logical/physical blocksize?
What tell these commands:

cat /sys/block/sdb/queue/physical_block_size
cat /sys/block/md0/queue/physical_block_size

Seagate says there are 4096 bytes/sector on this devices.

Lars

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