On Mon, Dec 23, 2013 at 04:28:14PM +0700, Rene C. wrote: > Indeed, that seems to have been at least part of the problem, thanks much. > > Still, after having removed all snapshots and rerun vzctl compress, I > still ended up with a pigz compressed backup of 40G for a container > with 2G used disk space (shown by df -h within the container). Any > idea how that can happen?
Yes, I have. The size of ploop clusters is 1MB. It's much bigger than a file system block size (4KB). The file system can allocate 1 block (4K), but one cluster (1Mb) on ploop will be allocated. If a file system spreads blocks far from each other, it can freeze much more space in ploop image. We know this problem and going to fix it in a near future. > > On Sat, Dec 21, 2013 at 11:13 PM, Andrew Vagin <ava...@parallels.com> wrote: > > On Sat, Dec 21, 2013 at 09:08:43PM +0700, Rene C. wrote: > >> We have a container that needs moving to another hardware node, but a > >> vzpbackup of it is 250G. > >> > >> Within the container only 1.9G is used: > >> > >> /dev/ploop33244p1 393G 1.9G 371G 1% / > >> > >> Tried running a vzctl compact but it just shows a few lines and stops > >> without having done anything: > >> > >> # vzctl compact 1709 > >> Trying to find free extents bigger than 0 bytes > >> Waiting > >> Call FITRIM, for minlen=33554432 > >> Call FITRIM, for minlen=16777216 > >> Call FITRIM, for minlen=8388608 > >> Call FITRIM, for minlen=4194304 > >> Call FITRIM, for minlen=2097152 > >> Call FITRIM, for minlen=1048576 > >> 0 clusters have been relocated > >> > >> /vza1/private/1709/root.hdd has following files: > >> > >> -rw-r--r-- 1 root root 1478 Dec 21 20:35 DiskDescriptor.xml > >> -rw------- 1 root root 0 Nov 27 12:33 DiskDescriptor.xml.lck > >> -rw------- 1 root root 257 447 428 096 Dec 20 07:42 root.hdd > >> -rw------- 1 root root 376 438 784 Dec 20 09:27 > >> root.hdd.{e66fccca-85cf-4bf2-888d-6669988f1da6} > >> -rw------- 1 root root 517 996 544 Dec 21 17:49 > >> root.hdd.{f881c603-48cd-4e21-af63-45e49ce715ba} > >> drwx------ 2 root root 4096 Nov 27 12:34 root.hdd.mnt > >> > >> What can we do to compress this down to the actual 2G used? > > > > Looks like you did a snapshot, didn't you? In this case only the last > > delta is compacted. > > > > You can try to delete snapshots and compress the disk again. > > > >> > >> 2.6.32-042stab081.5 > >> e2fsprogs-resize2fs-static-1.42.3-3.el6.1.ovz.x86_64 > >> vzctl-4.5.1-1.x86_64 > >> vzkernel-2.6.32-042stab081.5.x86_64 > >> vzctl-core-4.5.1-1.x86_64 > >> vzquota-3.1-1.x86_64 > >> vzstats-0.5.2-1.noarch > >> ploop-lib-1.9-1.x86_64 > >> ploop-1.9-1.x86_64 > >> _______________________________________________ > >> Users mailing list > >> Users@openvz.org > >> https://lists.openvz.org/mailman/listinfo/users _______________________________________________ Users mailing list Users@openvz.org https://lists.openvz.org/mailman/listinfo/users