Hey,
I have the following problem. I have set up a daily backup of LXC containers to external NetApp storage (connected via NFS)
There are 4 containers on the Proxmox host. With one of one of the containers, there is a problem that when I get a huge backup.
The container contains 1 disk with a size of 200Gb from a local ZFS.
When I look at the backup logs, I see that its size is from 440 gigabytes and every day this number grows by about 20 gigabytes.
A container backup takes about 7 hours, which is of course unacceptable.
What steps can I follow to understand what is the reason?
Proxmox version - 6.4-6
Backup mode - snapshot, compression - zstd
zpool in RAIDZ1
Backup logs
I have the following problem. I have set up a daily backup of LXC containers to external NetApp storage (connected via NFS)
There are 4 containers on the Proxmox host. With one of one of the containers, there is a problem that when I get a huge backup.
The container contains 1 disk with a size of 200Gb from a local ZFS.
When I look at the backup logs, I see that its size is from 440 gigabytes and every day this number grows by about 20 gigabytes.
A container backup takes about 7 hours, which is of course unacceptable.
What steps can I follow to understand what is the reason?
Proxmox version - 6.4-6
Backup mode - snapshot, compression - zstd
zpool in RAIDZ1
Bash:
zfs list -o space rpool/data/subvol-105-disk-0
NAME AVAIL USED USEDSNAP USEDDS USEDREFRESERV USEDCHILD
rpool/data/subvol-105-disk-0 89.3G 111G 0B 111G 0B 0B
Bash:
zpool get all | grep -E 'ashift|comp|dedup'
rpool dedupratio 1.00x -
rpool ashift 12 local
rpool feature@lz4_compress active local
rpool feature@zstd_compress disabled localBackup logs
Bash:
vzdump-lxc-105-2021_06_06-00_07_06.log:2021-06-06 09:04:41 INFO: Total bytes written: 470392391680 (439GiB, 14MiB/s)
vzdump-lxc-105-2021_06_07-00_07_30.log:2021-06-07 12:53:33 INFO: Total bytes written: 495304099840 (462GiB, 11MiB/s)
vzdump-lxc-105-2021_06_08-00_07_34.log:2021-06-08 14:28:56 INFO: Total bytes written: 546285977600 (509GiB, 11MiB/s)
Bash:
cat /etc/pve/lxc/105.conf
arch: amd64
cores: 4
hostname: lxc.example.com
memory: 8192
net0: name=eth0,bridge=vmbr0,firewall=1,gw=10.10.0.1,hwaddr=42:A8:C3:8D:4F:80,ip=10.10.0.110/24,tag=40,type=veth
onboot: 1
ostype: ubuntu
parent: vzdump
protection: 1
rootfs: local-zfs:subvol-105-disk-0,size=200G
swap: 0
unprivileged: 1
Last edited:
