Arkadiusz Miskiewicz wrote:
The question is now why software raid is soo slow when device is accessed with O_DIRECT by xfs_repair? (that's hch guess on what's the problem). Is this bug, expected behaviour?
I would think that this is not unexpected - 2 disk bound tasks, one (resync), which requires the heads to sequentially step cylinder by cylinder from the beginning to the end.
The other, xfs_repair, which is randomly seeking all heads all over the platters.
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