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/openbmc/linux/drivers/md/bcache/ |
H A D | super.c | 7a55948d Mon Oct 08 07:41:07 CDT 2018 Shenghui Wang <shhuiw@foxmail.com> bcache: account size of buckets used in uuid write to ca->meta_sectors_written
UUIDs are considered as metadata. __uuid_write should add the number of buckets (in sectors) written to disk to ca->meta_sectors_written. Currently only 1 bucket is used in uuid write.
Steps to test: 1) create a fresh backing device and a fresh cache device separately. The backing device didn't attach to any cache set. 2) cd /sys/block/<cache device>/bcache cat metadata_written // record the output value cat bucket_size 3) attach the backing device to cache set 4) cat metadata_written The output value is almost the same as the value in step 2 before the change. After the change, the value is bigger about 1 bucket size.
Signed-off-by: Shenghui Wang <shhuiw@foxmail.com> Reviewed-by: Tang Junhui <tang.junhui.linux@gmail.com> Signed-off-by: Coly Li <colyli@suse.de> Signed-off-by: Jens Axboe <axboe@kernel.dk> 7a55948d Mon Oct 08 07:41:07 CDT 2018 Shenghui Wang <shhuiw@foxmail.com> bcache: account size of buckets used in uuid write to ca->meta_sectors_written UUIDs are considered as metadata. __uuid_write should add the number of buckets (in sectors) written to disk to ca->meta_sectors_written. Currently only 1 bucket is used in uuid write. Steps to test: 1) create a fresh backing device and a fresh cache device separately. The backing device didn't attach to any cache set. 2) cd /sys/block/<cache device>/bcache cat metadata_written // record the output value cat bucket_size 3) attach the backing device to cache set 4) cat metadata_written The output value is almost the same as the value in step 2 before the change. After the change, the value is bigger about 1 bucket size. Signed-off-by: Shenghui Wang <shhuiw@foxmail.com> Reviewed-by: Tang Junhui <tang.junhui.linux@gmail.com> Signed-off-by: Coly Li <colyli@suse.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
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