Hey Phil,
BTW - your smartctl gists are gone
All content I posted is still at:
https://gist.github.com/nh2/db886f3afbbb4b186aa5088ca2782c06
The only thing that changed is the `#anchor` part because I renamed the files to distinguish `-a` and `--xall` output more clearly.
Hmmm. I just went back through the thread and I don't see your
partition tables posted anywhere. Is there any chance this array
predates 4k sector drives and has been upgraded to 4k physical/ 512B
logical drives? With a non-aligned partition? That would cause MD's
sector re-writes to fail, as the drive would have to turn them into
read-modify-write cycles across two actual sectors.
# fdisk -l
Disk /dev/sda: 2,7 TiB, 3000592982016 bytes, 5860533168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: DBDA662C-B0D1-489B-B863-01852D7837EC
Device Start End Sectors Size Type
/dev/sda1 409600 5860524976 5860115377 2,7T Linux filesystem
/dev/sda2 2048 4096 2049 1M BIOS boot
Partition table entries are not in disk order.
Disk /dev/sdb: 2,7 TiB, 3000592982016 bytes, 5860533168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: FE4FD612-1C70-4A9E-9BC4-6C3DCDDA37EB
Device Start End Sectors Size Type
/dev/sdb1 409600 5860524976 5860115377 2,7T Linux filesystem
/dev/sdb2 2048 4096 2049 1M BIOS boot
Partition table entries are not in disk order.
As far as I remember, this is how I set up the partitions originally and never changed them.
Puzzling also as to why md didn't re-write that sector
Hmmm.
I've just posted a small clarification in response to Brad's email (likely it did re-write that sector), please have a look!
Niklas
