On Thu, Sep 22, 2016 at 01:14:45PM +0200, Marcin Mirosław wrote:

W dniu 22.09.2016 o 12:58, Marcin Mirosław pisze:

quoted

Hi!
I'm at:
commit b7cb7779de9609899fa53f7bab4e3cee69ac1f7e
Author: Kent Overstreet [off-list ref]
Date:   Wed Sep 21 17:38:38 2016 -0800

    bcache: fix an ordering issue in btree_interior_update code

    Also a bunch of refactoring


Steps:
# bcache format --discard  --compression_type=lz4 /dev/system10/bcache
(underlaying devices does not support discard)
# mount & use fs
# echo crc64 > data_checksum
# echo crc64 > metadata_checksum
# use filesystem
After sometime I'm getting:
[ 6444.192279] bcache (dm-11): IO error on dm-11 for checksum error

After some trying to read files dmesg says:
[ 7651.598498] bcache (dm-11): IO error on dm-11 for checksum error
[ 7657.066482] bio_checksum_uncompress: 83 callbacks suppressed

The crc64 fix turned out to be an incompatible change for crc32c, so I had to
revert it. I'm just going to wait till I do all the other breaking changes for
that one (which should be soon).