LXC-Containers which were running on the hosts during crash, filesystem errors are displayed and look like this (on host and in LXC):
kernel: [360205.838168] EXT4-fs (loop3): previous I/O error to superblock detected kernel: [360205.839314] Buffer I/O error on dev loop3, logical block 0, lost sync page write kernel: [367213.313281] print_req_error: I/O error, dev loop11, sector 470195848
Shut down the LXC and try to repair the filesystem with e2fsck:
e2fsck -p -c -f -v /mnt/pve/storage/images/71403/vm-71403-disk-1.raw
Broken inodes found and fixed.
recovering journal Clearing orphaned inode 1180012 (uid=0, gid=0, mode=0100666, size=0) Clearing orphaned inode 1179930 (uid=0, gid=0, mode=0100666, size=0) Clearing orphaned inode 10444 (uid=0, gid=0, mode=0100600, size=0) Updating bad block inode.