Hi,
I am testing some disk failure scenarios in a 2 drive raid1 mirror.
They are 4GB each, virtual SATA drives inside virtualbox.
To simulate the failure, I detached one of the drives from the system.
After that, I see no sign of a problem except for these errors:
Oct 12 15:37:14 rock-dev kernel: btrfs: bdev /dev/sdb errs: wr 0, rd
0, flush 1, corrupt 0, gen 0
Oct 12 15:37:14 rock-dev kernel: lost page write due to I/O error on /dev/sdb
/dev/sdb is gone from the system, but btrfs fi show still lists it.
Label: raid1pool uuid: 4e5d8b43-1d34-4672-8057-99c51649b7c6
Total devices 2 FS bytes used 1.46GiB
devid 1 size 4.00GiB used 2.45GiB path /dev/sdb
devid 2 size 4.00GiB used 2.43GiB path /dev/sdc
I am able to read and write just fine, but do see the above errors in dmesg.
What is the best way to find out that one of the drives has gone bad?
Suman
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