In __btrfs_map_block(), stripe_index is always wrong if mirror_num is
given.
For DUP/RAID1 case, if mirror_num is given, e.g. 1, it should return the
second stripe.
But codes consider the mirror_num is start from 1 and always minus 1,
causing even mirror number is given as 1, __btrfs_map_block() w
On Fri, 08 May 2015 10:16:23 +1000, NeilBrown wrote:
> The "fh_len" passed to ->fh_to_* is not guaranteed to be that same as
> that returned by encode_fh - it may be larger.
>
> With NFSv2, the filehandle is fixed length, so it may appear longer
> than expected and be zero-padded.
>
> So we must
I have installed a new virtual machine (VirtualBox) with Arch on btrfs
(just a root fs and swap partition, no other partitions).
I suddenly noticed 10 checksum errors in the kernel log:
$ dmesg | grep csum
[ 736.283506] BTRFS warning (device sda1): csum failed ino 1704363 off
761856 csum 114598
