Re: [Devel] [PATCH RH9 v3 1/8] block/fops: add llseek_hole to blockdevops

On 5.09.23 11:59, Andrey Zhadchenko wrote: Add new function for block_device_operations, which will be used for SEEK_HOLE and SEEK_DATA llseek calls Feature: dm: implement SEEK_HOLE for dm-qcow2 and dm-ploop https://jira.vzint.dev/browse/PSBM-145746 Signed-off-by: Andrey Zhadchenko --- v2: fix

Re: [Devel] [PATCH RH9 v3 2/8] dm: add llseek_hole infrastructure

On 5.09.23 11:59, Andrey Zhadchenko wrote: Add new function to target_type, so any dm devices may realize it Implement intermediate llseek_hole() on device-mapper layer, do some simple checks. Feature: dm: implement SEEK_HOLE for dm-qcow2 and dm-ploop https://jira.vzint.dev/browse/PSBM-145746 Si

Re: [Devel] [PATCH RH9 v3 3/8] dm/push_backup: add llseek_hole proxy

On 5.09.23 11:59, Andrey Zhadchenko wrote: push_backup dm module llseek_hole() should just call the same function from it's origin bdev Feature: dm: implement SEEK_HOLE for dm-qcow2 and dm-ploop https://jira.vzint.dev/browse/PSBM-145746 Signed-off-by: Andrey Zhadchenko --- drivers/md/dm-push-

Re: [Devel] [PATCH RH9 v3 4/8] dm/dm-qcow2: add calc_front_qio_bytes() helper

On 5.09.23 11:59, Andrey Zhadchenko wrote: Move code that calculates qio front bytes type and amount into a new helper. Increase code clarity. This will be used later for llseek_hole() Feature: dm: implement SEEK_HOLE for dm-qcow2 and dm-ploop https://jira.vzint.dev/browse/PSBM-145746 Signed-off

Re: [Devel] [PATCH RH9 v3 5/8] dm/dm-qcow2: add llseek_hole

On 5.09.23 11:59, Andrey Zhadchenko wrote: Implement llseek_hole() for dm-qcow2 target. Iterate over ranges with cluster granularity until hole or data is found. To reduce code duplication, we should use already existing parse_metadata() We can pretend that seek request is read request for metada

Re: [Devel] [PATCH RH9 v3 6/8] dm/dm-ploop: reinforce some defines

On 5.09.23 11:59, Andrey Zhadchenko wrote: Add braces around arguments so callers can use equations while calling these macros. Feature: dm: implement SEEK_HOLE for dm-qcow2 and dm-ploop https://jira.vzint.dev/browse/PSBM-145746 Signed-off-by: Andrey Zhadchenko --- drivers/md/dm-ploop.h | 8 +

Re: [Devel] [PATCH RH9 v3 7/8] dm/dm-ploop: allow to check if cluster is locked

On 5.09.23 11:59, Andrey Zhadchenko wrote: When looking for SEEK_HOLE, we would like to check if cluster is locked without valid pio Feature: dm: implement SEEK_HOLE for dm-qcow2 and dm-ploop https://jira.vzint.dev/browse/PSBM-145746 Signed-off-by: Andrey Zhadchenko --- drivers/md/dm-ploop-ma

Re: [Devel] [PATCH RH9 v3 8/8] dm/dm-ploop: add llseek_hole

On 5.09.23 11:59, Andrey Zhadchenko wrote: Implement find_hole() for dm-ploop target. Iterate over clusters until we find hole or data by using ploop_bat_entries() which will do all our work Feature: dm: implement SEEK_HOLE for dm-qcow2 and dm-ploop https://jira.vzint.dev/browse/PSBM-145746 Sign