Commits
Kir Kolyshkin authored 09e974fa3ac
vzctl chkpnt: workaround for ENOSPC In order to be able to checkpoint/restore processes having opened but deleted files, we have a kernel helper that hardlinks such files to a special CPT_HARDLINK_DIR (see commit 16ee8dd). The problem is if there is no disk space (or disk inodes) available, checkpointing fails like this: # vzctl chkpnt 74933 --dump --dumpfile /dev/shm/dump.74933 Setting up checkpoint... join context.. dump... Unable to create hardlink directory //.cpt_hardlink_dir_a920e4ddc233afddc9fb53d26c392319: No space left on device Checkpointing failed The workaround, implemented by this patch, is to 1. Not remove the CPT_HARDLINK_DIR (just remove its contents) 2. Create CPT_HARDLINK_DIR on container start (chances are there is enough free disk space/inodes at that moment) Unfortunately, it is not helping with the case then there's not enough inodes as the kernel will fail to hardlink files. Signed-off-by: Kir Kolyshkin <kir@openvz.org>