On 2018/10/14 下午7:08, waxhead wrote: > In case BTRFS fails to WRITE to a disk. What happens? Normally it should return error when we flush disk. And in that case, error will leads to transaction abort and the fs goes RO to prevent further corruption. > Does the bad area get mapped out somehow? No. > Does it try again until it > succeed or until it "times out" or reach a threshold counter? Unless it's done by block layer, btrfs doesn't try that. > Does it eventually try to write to a different disk (in case of using > the raid1/10 profile?) No. That's not what RAID is designed to do. It's only allowed to have any flush error if using "degraded" mount option and the error is under tolerance. Thanks, Qu
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