Hi everybody!
I tried find sth about it but I didn’t .
While I’m rsyncing data to lxd container or untar tgz on lxd - these operations hangs for minutes or hours.
I think that I have trouble with zfs storage, but I can’t find too many errors or warnings.
What to do?
I’m using Ubuntu 16.04 64-bits and lxd from snap
I updated lxd from apt to snap and loose ma container but I created new one - maybe I did sth wrong and I should repeated from beggining?
Extremely long waits could be explained by you running out of diskspace, ZFS will hold all write operations indefinitely when the device it’s using (quite likely a loop file in your case) is full.
I think there is enough space …
Maybe zfs has a problem with allocating new space on file-disk? There is a lot of spl_system_task processes
df
Filesystem Size Used Avail Use% Mounted on
udev 32G 148K 32G 1% /dev
tmpfs 6.3G 691M 5.6G 11% /run
/dev/sda3 1.8T 1.4T 383G 78% /
tmpfs 32G 96K 32G 1% /dev/shm
tmpfs 5.0M 4.0K 5.0M 1% /run/lock
tmpfs 32G 0 32G 0% /sys/fs/cgroup
tmpfs 6.3G 0 6.3G 0% /run/user/0
tmpfs 6.3G 12K 6.3G 1% /run/user/127
tmpfs 6.3G 0 6.3G 0% /run/user/3031
tmpfs 6.3G 0 6.3G 0% /run/user/3247
/dev/loop0 82M 82M 0 100% /snap/core/4206
/dev/loop2 48M 48M 0 100% /snap/lxd/5866
zpool list
NAME SIZE ALLOC FREE EXPANDSZ FRAG CAP DEDUP HEALTH ALTROOT
lxd 99,5G 29,5G 70,0G - 23% 29% 1.00x ONLINE -
zfs list
NAME USED AVAIL REFER MOUNTPOINT
lxd 29,5G 66,9G 19K none
lxd/containers 24,8G 66,9G 19K none
lxd/containers/hmtest-00 4,45G 66,9G 8,95G /var/snap/lxd/common/lxd/storage-pools/lxd/containers/hmtest-00
lxd/containers/hmtest-72 20,4G 66,9G 24,8G /var/snap/lxd/common/lxd/storage-pools/lxd/containers/hmtest-72
lxd/custom 19K 66,9G 19K none
lxd/deleted 19K 66,9G 19K none
lxd/images 4,71G 66,9G 19K none
lxd/images/f71e76edd33548e6c898fad9778997f84d494ad779761ce34826c41031c151fc 4,71G 66,9G 4,71G none
lxd/snapshots 19K 66,9G 19K none
ls /var/snap/lxd/common/lxd/disks/ -lh
total 56G
drwx------ 2 root root 4.0K Mar 26 13:46 .
drwx--x--x 14 root root 4.0K Mar 27 17:49 ..
-rw------- 1 root root 100G Mar 28 11:55 lxd.img
du -h /var/snap/lxd/common/lxd/disks/
56G /var/snap/lxd/common/lxd/disks/I’ve restarted host server and copying data was succesful! No more hangs.
I think I messed up with update-ing Ubuntu and lxd
Thanks Stéphane for quick reply and help!