Backup von LXC Container scheitert: read-only filesystem

M

Miraculix_de

Member
Nov 12, 2023
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Schon seit April scheitert bei mir das Backup eines einzigen LXC Containers, in dem Plex Media Server läuft. Dieser Container bekommt SMB Dateisysteme von einer VM eingebunden. Dies hat bisher aber keinerlei Probleme gemacht. Diese Mounts laufen nicht über PVE, sondern extern.


Code: 
#Plex Media Server
arch: amd64
cores: 2
features: mount=cifs,nesting=1
hostname: taipeh
memory: 1024
net0: name=eth0,bridge=vmbr0,firewall=1,gw=192.168.170.1,hwaddr=8E:8B:2D:E4:4C:70,ip=192.168.XX.YY/24,ip6=dhcp,type=veth
onboot: 1
ostype: debian
rootfs: local-lvm:vm-104-disk-0,size=8G
startup: order=3
swap: 1024
tags: exposed;plex
unprivileged: 0



Code: 
INFO: starting new backup job: vzdump 104 --node pve --mode snapshot --remove 0 --notification-mode auto --notes-template '{{guestname}}' --storage pbs
INFO: Starting Backup of VM 104 (lxc)
INFO: Backup started at 2025-06-13 09:54:55
INFO: status = running
INFO: CT Name: taipeh
INFO: including mount point rootfs ('/') in backup
ERROR: Backup of VM 104 failed - mkdir /mnt/vzsnap0: Read-only file system at /usr/share/perl5/PVE/VZDump/LXC.pm line 181.
INFO: Failed at 2025-06-13 09:54:55
INFO: Backup job finished with errors
INFO: skipping disabled target 'mail-to-root'
TASK ERROR: job errors
 
Last edited:
Hallo,
bitte die Ausgabe von mount posten.
 
Im LXC Container nehm ich an?`

Code: 
/dev/mapper/pve-vm--104--disk--0 on / type ext4 (rw,relatime,stripe=16)
none on /dev type tmpfs (rw,relatime,size=492k,mode=755,inode64)
proc on /proc type proc (rw,nosuid,nodev,noexec,relatime)
proc on /proc/sys/net type proc (rw,nosuid,nodev,noexec,relatime)
proc on /proc/sys type proc (ro,relatime)
proc on /proc/sysrq-trigger type proc (ro,relatime)
sysfs on /sys type sysfs (ro,nosuid,nodev,noexec,relatime)
sysfs on /sys/devices/virtual/net type sysfs (rw,nosuid,nodev,noexec,relatime)
fusectl on /sys/fs/fuse/connections type fusectl (rw,nosuid,nodev,noexec,relatime)
proc on /dev/.lxc/proc type proc (rw,relatime)
sys on /dev/.lxc/sys type sysfs (rw,relatime)
none on /sys/fs/cgroup type cgroup2 (rw,nosuid,nodev,noexec,relatime)
lxcfs on /proc/cpuinfo type fuse.lxcfs (rw,nosuid,nodev,relatime,user_id=0,group_id=0,allow_other)
lxcfs on /proc/diskstats type fuse.lxcfs (rw,nosuid,nodev,relatime,user_id=0,group_id=0,allow_other)
lxcfs on /proc/loadavg type fuse.lxcfs (rw,nosuid,nodev,relatime,user_id=0,group_id=0,allow_other)
lxcfs on /proc/meminfo type fuse.lxcfs (rw,nosuid,nodev,relatime,user_id=0,group_id=0,allow_other)
lxcfs on /proc/slabinfo type fuse.lxcfs (rw,nosuid,nodev,relatime,user_id=0,group_id=0,allow_other)
lxcfs on /proc/stat type fuse.lxcfs (rw,nosuid,nodev,relatime,user_id=0,group_id=0,allow_other)
lxcfs on /proc/swaps type fuse.lxcfs (rw,nosuid,nodev,relatime,user_id=0,group_id=0,allow_other)
lxcfs on /proc/uptime type fuse.lxcfs (rw,nosuid,nodev,relatime,user_id=0,group_id=0,allow_other)
lxcfs on /sys/devices/system/cpu type fuse.lxcfs (rw,nosuid,nodev,relatime,user_id=0,group_id=0,allow_other)
devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=666,max=1026)
devpts on /dev/ptmx type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=666,max=1026)
devpts on /dev/console type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=666,max=1026)
devpts on /dev/tty1 type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=666,max=1026)
devpts on /dev/tty2 type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=666,max=1026)
none on /proc/sys/kernel/random/boot_id type tmpfs (ro,nosuid,nodev,noexec,relatime,size=492k,mode=755,inode64)
tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev,inode64)
tmpfs on /run type tmpfs (rw,nosuid,nodev,size=6441656k,nr_inodes=819200,mode=755,inode64)
tmpfs on /run/lock type tmpfs (rw,nosuid,nodev,noexec,relatime,size=5120k,inode64)
ramfs on /run/credentials/systemd-sysctl.service type ramfs (ro,nosuid,nodev,noexec,relatime,mode=700)
ramfs on /run/credentials/systemd-sysusers.service type ramfs (ro,nosuid,nodev,noexec,relatime,mode=700)
mqueue on /dev/mqueue type mqueue (rw,nosuid,nodev,noexec,relatime)
hugetlbfs on /dev/hugepages type hugetlbfs (rw,relatime,pagesize=2M)
ramfs on /run/credentials/systemd-tmpfiles-setup-dev.service type ramfs (ro,nosuid,nodev,noexec,relatime,mode=700)
ramfs on /run/credentials/systemd-tmpfiles-setup.service type ramfs (ro,nosuid,nodev,noexec,relatime,mode=700)
root@taipeh:~# mount | grep ro
proc on /proc type proc (rw,nosuid,nodev,noexec,relatime)
proc on /proc/sys/net type proc (rw,nosuid,nodev,noexec,relatime)
proc on /proc/sys type proc (ro,relatime)
proc on /proc/sysrq-trigger type proc (ro,relatime)
sysfs on /sys type sysfs (ro,nosuid,nodev,noexec,relatime)
proc on /dev/.lxc/proc type proc (rw,relatime)
none on /sys/fs/cgroup type cgroup2 (rw,nosuid,nodev,noexec,relatime)
lxcfs on /proc/cpuinfo type fuse.lxcfs (rw,nosuid,nodev,relatime,user_id=0,group_id=0,allow_other)
lxcfs on /proc/diskstats type fuse.lxcfs (rw,nosuid,nodev,relatime,user_id=0,group_id=0,allow_other)
lxcfs on /proc/loadavg type fuse.lxcfs (rw,nosuid,nodev,relatime,user_id=0,group_id=0,allow_other)
lxcfs on /proc/meminfo type fuse.lxcfs (rw,nosuid,nodev,relatime,user_id=0,group_id=0,allow_other)
lxcfs on /proc/slabinfo type fuse.lxcfs (rw,nosuid,nodev,relatime,user_id=0,group_id=0,allow_other)
lxcfs on /proc/stat type fuse.lxcfs (rw,nosuid,nodev,relatime,user_id=0,group_id=0,allow_other)
lxcfs on /proc/swaps type fuse.lxcfs (rw,nosuid,nodev,relatime,user_id=0,group_id=0,allow_other)
lxcfs on /proc/uptime type fuse.lxcfs (rw,nosuid,nodev,relatime,user_id=0,group_id=0,allow_other)
lxcfs on /sys/devices/system/cpu type fuse.lxcfs (rw,nosuid,nodev,relatime,user_id=0,group_id=0,allow_other)
none on /proc/sys/kernel/random/boot_id type tmpfs (ro,nosuid,nodev,noexec,relatime,size=492k,mode=755,inode64)
ramfs on /run/credentials/systemd-sysctl.service type ramfs (ro,nosuid,nodev,noexec,relatime,mode=700)
ramfs on /run/credentials/systemd-sysusers.service type ramfs (ro,nosuid,nodev,noexec,relatime,mode=700)
ramfs on /run/credentials/systemd-tmpfiles-setup-dev.service type ramfs (ro,nosuid,nodev,noexec,relatime,mode=700)
ramfs on /run/credentials/systemd-tmpfiles-setup.service type ramfs (ro,nosuid,nodev,noexec,relatime,mode=700)
root@taipeh:~# apt update
Hit:1 https://security.debian.org bookworm-security InRelease
Hit:2 https://downloads.plex.tv/repo/deb public InRelease
Hit:3 https://debian.ethz.ch/debian bookworm InRelease
Get:4 https://debian.ethz.ch/debian bookworm-updates InRelease [55.4 kB]
Fetched 55.4 kB in 1s (61.4 kB/s)   
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
All packages are up to date.
root@taipeh:~# mount
/dev/mapper/pve-vm--104--disk--0 on / type ext4 (rw,relatime,stripe=16)
none on /dev type tmpfs (rw,relatime,size=492k,mode=755,inode64)
proc on /proc type proc (rw,nosuid,nodev,noexec,relatime)
proc on /proc/sys/net type proc (rw,nosuid,nodev,noexec,relatime)
proc on /proc/sys type proc (ro,relatime)
proc on /proc/sysrq-trigger type proc (ro,relatime)
sysfs on /sys type sysfs (ro,nosuid,nodev,noexec,relatime)
sysfs on /sys/devices/virtual/net type sysfs (rw,nosuid,nodev,noexec,relatime)
fusectl on /sys/fs/fuse/connections type fusectl (rw,nosuid,nodev,noexec,relatime)
proc on /dev/.lxc/proc type proc (rw,relatime)
sys on /dev/.lxc/sys type sysfs (rw,relatime)
none on /sys/fs/cgroup type cgroup2 (rw,nosuid,nodev,noexec,relatime)
lxcfs on /proc/cpuinfo type fuse.lxcfs (rw,nosuid,nodev,relatime,user_id=0,group_id=0,allow_other)
lxcfs on /proc/diskstats type fuse.lxcfs (rw,nosuid,nodev,relatime,user_id=0,group_id=0,allow_other)
lxcfs on /proc/loadavg type fuse.lxcfs (rw,nosuid,nodev,relatime,user_id=0,group_id=0,allow_other)
lxcfs on /proc/meminfo type fuse.lxcfs (rw,nosuid,nodev,relatime,user_id=0,group_id=0,allow_other)
lxcfs on /proc/slabinfo type fuse.lxcfs (rw,nosuid,nodev,relatime,user_id=0,group_id=0,allow_other)
lxcfs on /proc/stat type fuse.lxcfs (rw,nosuid,nodev,relatime,user_id=0,group_id=0,allow_other)
lxcfs on /proc/swaps type fuse.lxcfs (rw,nosuid,nodev,relatime,user_id=0,group_id=0,allow_other)
lxcfs on /proc/uptime type fuse.lxcfs (rw,nosuid,nodev,relatime,user_id=0,group_id=0,allow_other)
lxcfs on /sys/devices/system/cpu type fuse.lxcfs (rw,nosuid,nodev,relatime,user_id=0,group_id=0,allow_other)
devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=666,max=1026)
devpts on /dev/ptmx type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=666,max=1026)
devpts on /dev/console type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=666,max=1026)
devpts on /dev/tty1 type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=666,max=1026)
devpts on /dev/tty2 type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=666,max=1026)
none on /proc/sys/kernel/random/boot_id type tmpfs (ro,nosuid,nodev,noexec,relatime,size=492k,mode=755,inode64)
tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev,inode64)
tmpfs on /run type tmpfs (rw,nosuid,nodev,size=6441656k,nr_inodes=819200,mode=755,inode64)
tmpfs on /run/lock type tmpfs (rw,nosuid,nodev,noexec,relatime,size=5120k,inode64)
ramfs on /run/credentials/systemd-sysctl.service type ramfs (ro,nosuid,nodev,noexec,relatime,mode=700)
ramfs on /run/credentials/systemd-sysusers.service type ramfs (ro,nosuid,nodev,noexec,relatime,mode=700)
mqueue on /dev/mqueue type mqueue (rw,nosuid,nodev,noexec,relatime)
hugetlbfs on /dev/hugepages type hugetlbfs (rw,relatime,pagesize=2M)
ramfs on /run/credentials/systemd-tmpfiles-setup-dev.service type ramfs (ro,nosuid,nodev,noexec,relatime,mode=700)
ramfs on /run/credentials/systemd-tmpfiles-setup.service type ramfs (ro,nosuid,nodev,noexec,relatime,mode=700)
//192.168.YY.XX/Movies on /media/movies type cifs (ro,relatime,vers=2.1,cache=strict,username=plex,domain=WORKGROUP,uid=999,forceuid,gid=996,forcegid,addr=192.168.170.11,file_mode=0755,dir_mode=0755,soft,nounix,serverino,mapposix,rsize=1048576,wsize=1048576,bsize=1048576,retrans=1,echo_interval=60,actimeo=1,closetimeo=1,_netdev)
//192.168.YY.XX/Music on /media/music type cifs (ro,relatime,vers=2.1,cache=strict,username=plex,domain=WORKGROUP,uid=999,forceuid,gid=996,forcegid,addr=192.168.170.11,file_mode=0755,dir_mode=0755,soft,nounix,serverino,mapposix,rsize=1048576,wsize=1048576,bsize=1048576,retrans=1,echo_interval=60,actimeo=1,closetimeo=1,_netdev)
//192.168.YY.XX/Videos on /media/videos type cifs (ro,relatime,vers=2.1,cache=strict,username=plex,domain=WORKGROUP,uid=999,forceuid,gid=996,forcegid,addr=192.168.170.11,file_mode=0755,dir_mode=0755,soft,nounix,serverino,mapposix,rsize=1048576,wsize=1048576,bsize=1048576,retrans=1,echo_interval=60,actimeo=1,closetimeo=1,_netdev)
//192.168.YY.XX/Series on /media/series type cifs (ro,relatime,vers=2.1,cache=strict,username=plex,domain=WORKGROUP,uid=999,forceuid,gid=996,forcegid,addr=192.168.170.11,file_mode=0755,dir_mode=0755,soft,nounix,serverino,mapposix,rsize=1048576,wsize=1048576,bsize=1048576,retrans=1,echo_interval=60,actimeo=1,closetimeo=1,_netdev)
 
Code: 
mount
sysfs on /sys type sysfs (rw,nosuid,nodev,noexec,relatime)
proc on /proc type proc (rw,relatime)
udev on /dev type devtmpfs (rw,nosuid,relatime,size=16070256k,nr_inodes=4017564,mode=755,inode64)
devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000)
tmpfs on /run type tmpfs (rw,nosuid,nodev,noexec,relatime,size=3220828k,mode=755,inode64)
/dev/mapper/pve-root on / type ext4 (rw,relatime,errors=remount-ro)
securityfs on /sys/kernel/security type securityfs (rw,nosuid,nodev,noexec,relatime)
tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev,inode64)
tmpfs on /run/lock type tmpfs (rw,nosuid,nodev,noexec,relatime,size=5120k,inode64)
cgroup2 on /sys/fs/cgroup type cgroup2 (rw,nosuid,nodev,noexec,relatime)
pstore on /sys/fs/pstore type pstore (rw,nosuid,nodev,noexec,relatime)
efivarfs on /sys/firmware/efi/efivars type efivarfs (rw,nosuid,nodev,noexec,relatime)
bpf on /sys/fs/bpf type bpf (rw,nosuid,nodev,noexec,relatime,mode=700)
systemd-1 on /proc/sys/fs/binfmt_misc type autofs (rw,relatime,fd=30,pgrp=1,timeout=0,minproto=5,maxproto=5,direct,pipe_ino=8881)
mqueue on /dev/mqueue type mqueue (rw,nosuid,nodev,noexec,relatime)
debugfs on /sys/kernel/debug type debugfs (rw,nosuid,nodev,noexec,relatime)
tracefs on /sys/kernel/tracing type tracefs (rw,nosuid,nodev,noexec,relatime)
hugetlbfs on /dev/hugepages type hugetlbfs (rw,relatime,pagesize=2M)
fusectl on /sys/fs/fuse/connections type fusectl (rw,nosuid,nodev,noexec,relatime)
configfs on /sys/kernel/config type configfs (rw,nosuid,nodev,noexec,relatime)
ramfs on /run/credentials/systemd-sysusers.service type ramfs (ro,nosuid,nodev,noexec,relatime,mode=700)
ramfs on /run/credentials/systemd-tmpfiles-setup-dev.service type ramfs (ro,nosuid,nodev,noexec,relatime,mode=700)
/dev/nvme0n1p2 on /boot/efi type vfat (rw,relatime,fmask=0077,dmask=0077,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro)
ramfs on /run/credentials/systemd-sysctl.service type ramfs (ro,nosuid,nodev,noexec,relatime,mode=700)
/dev/mapper/backup-storage on /media/storage type ext4 (rw,relatime)
binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,nosuid,nodev,noexec,relatime)
ramfs on /run/credentials/systemd-tmpfiles-setup.service type ramfs (ro,nosuid,nodev,noexec,relatime,mode=700)
sunrpc on /run/rpc_pipefs type rpc_pipefs (rw,relatime)
lxcfs on /var/lib/lxcfs type fuse.lxcfs (rw,nosuid,nodev,relatime,user_id=0,group_id=0,allow_other)
/dev/fuse on /etc/pve type fuse (rw,nosuid,nodev,relatime,user_id=0,group_id=0,default_permissions,allow_other)
tmpfs on /run/user/1000 type tmpfs (rw,nosuid,nodev,relatime,size=3220824k,nr_inodes=805206,mode=700,uid=1000,gid=1000,inode64)
tracefs on /sys/kernel/debug/tracing type tracefs (rw,nosuid,nodev,noexec,relatime)
borgfs on /mnt type fuse (ro,nosuid,nodev,relatime,user_id=0,group_id=0,default_permissions)
tmpfs on /run/user/0 type tmpfs (rw,nosuid,nodev,relatime,size=3220824k,nr_inodes=805206,mode=700,inode64)
 
Meh, da hab ich vor geraumer Zeit vergessen, ein Backup wieder auszuhängen. Offenbar kam der Fehler bei allen LXC Containern, wurde aber nur beim ersten angezeigt.

1000 Dank!
 
Miraculix_de said:
Meh, da hab ich vor geraumer Zeit vergessen, ein Backup wieder auszuhängen. Offenbar kam der Fehler bei allen LXC Containern, wurde aber nur beim ersten angezeigt.

1000 Dank!
Click to expand...
Eventuell in Zukunft nicht direkt auf /mnt mounten, besser in ein Unterverzeichnis oder in ein Unterverzeichnis von /media.
 
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