After Snapper rollback sometime ago, I deleted its new made snapshots during the rollback. And the second time I met error in rollback (the default subvolume is missing), I found the solution with --ambit classic, then the new problem comes. Snapper couldn’t create new snapshot, tells me:
Failed to create new snapshot:
.snapshots is not a btrfs subvolume; caused by 3 sender=: -> dest=: serial= reply_serial= path=; interface=; member= error_name=error.io_error
Can i fix this?
Show output of
btrfs subvolume list /
btrfs subvolume get-default /
cat /etc/fstab
Hamu:~ # btrfs subvolume list /
ID 256 gen 27324 top level 5 path @
ID 258 gen 27837 top level 256 path @/var
ID 259 gen 27338 top level 256 path @/usr/local
ID 260 gen 27837 top level 256 path @/tmp
ID 261 gen 27370 top level 256 path @/srv
ID 262 gen 27837 top level 256 path @/root
ID 263 gen 60 top level 256 path @/opt
ID 270 gen 27396 top level 256 path @/.snapshots
ID 696 gen 27837 top level 270 path @/.snapshots/196/snapshot
Hamu:~ # btrfs subvolume get-default /
ID 696 gen 27837 top level 270 path @/.snapshots/196/snapshot
Hamu:~ # cat /etc/fstab
/dev/havol/ganvo / btrfs defaults 0 0
/dev/havol/ganvo /var btrfs subvol=/@/var 0 0
/dev/havol/ganvo /usr/local btrfs subvol=/@/usr/local 0 0
/dev/havol/ganvo /tmp btrfs subvol=/@/tmp 0 0
/dev/havol/ganvo /srv btrfs subvol=/@/srv 0 0
/dev/havol/ganvo /root btrfs subvol=/@/root 0 0
/dev/havol/ganvo /opt btrfs subvol=/@/opt 0 0
/dev/havol/hme /home btrfs defaults 0 0
UUID=XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX /boot ext4 data=ordered 0 2
UUID=XXXXXXXXXXXXXXXX /boot/efi vfat utf8 0 2
/.snapshots mount point is missing. Add
/dev/havol/ganvo /.snapshots btrfs subvol=/@/.snapshots 0 0
to /etc/fstab, mount it and try snapper again. Check that /.snapshots mount point itself exists.
Creating snapshot is working now, you save my time, love you! So later can I delete the first snapshot and have no errer occurd when rolling back?
What is the first snapshot? Rolling back to what exactly?
You must have a base snapshot. The differences of all other shots is measured from there.
It is named “writabe copy #” is my first snapshot right now, if I delete it, rolling back didn’t work last time.
For example, if there are 2 snapshots left, which one is the base snapshot.
I am not staying behind your shoulder so I do not see what you are seeing.
Earliest…