Hey there. I'm not OP.
We are experiencing similar problems while using kernel 3.10.0-1127.8.2.vz7.151.14:
2020-08-20T02:00:47+0200 pcompact : Inspect d35c0c6f-0b08-4541-82a0-d5a611c49ae2
2020-08-20T02:00:47+0200 pcompact : Inspect /vz/private/2660/root.hdd/DiskDescriptor.xml
2020-08-20T02:00:47+0200 pcompact : ploop=31258MB image=32907MB data=26247MB balloon=3302MB
2020-08-20T02:00:47+0200 pcompact : Rate: 21.3 (threshold=10)
2020-08-20T02:00:47+0200 pcompact : Start compacting (to free 5097MB)
2020-08-20T02:00:47+0200 : Start defrag dev=/dev/ploop31385p1 mnt=/vz/root/2660 blocksize=2048
2020-08-20T02:00:56+0200 : Trying to find free extents bigger than 0 bytes granularity=512
2020-08-20T02:00:56+0200 pcompact : ploop=31258MB image=29563MB data=27143MB balloon=3302MB
2020-08-20T02:00:56+0200 pcompact : Stats: uuid=d35c0c6f-0b08-4541-82a0-d5a611c49ae2 ploop_size=31258MB image_size_before=32907MB image_size_after=29563MB compaction_time=9.058s type=online
2020-08-20T02:00:56+0200 pcompact : End compacting
So far the problem always seems to be related to images being higher than the total ploop size.
Is the patch on this thread supposed to solve these issues?
Any other thing which should be looked at?
Best regards and thank you,