Hi,
it should be just a small problem, but it is one. How can I rollback to a
snapshot of my root filesystem ?
Googeling, I found a lot of solutions, each different.
I finally choosed this one:
https://btrfs.wiki.kernel.org/index.php/UseCases#I_want_to_be_able_to_do_rollbacks_with_Btrfs
I made the snapshot, changed some configuration, and afterwards I'd like to
rollback to the snapshot:
- btrfs subvolume snapshot -r / /.snapshots/vor_nvidia
- change some configuration
- btrfs subvolume set-default 625 (id of the snapshot)
- reboot
My /-folder is again the old one, that's ok. The change of the configuration
has disappeared. But it is just read-only:
pc63422:~ # touch /test
touch: cannot touch '/test': Read-only file system
mount says:
...
/dev/sda1 on / type btrfs (rw,ssd,space_cache)
...
It seems to be rw !?
OS: SLES 12 64bit
kernel: 3.12.38-44-default
pc63422:~ # rpm -qa|grep -i btrfs
btrfsprogs-3.16.2-7.1.x86_64
libbtrfs0-3.16.2-7.1.x86_64
btrfsmaintenance-0.1-7.1.noarch
pc63422:~ # btrfs --version
Btrfs v3.16.2+20150127
pc63422:~ # btrfs fi show
Label: none uuid: 7edcb64a-4ca6-47ec-8979-54e158c96ac2
Total devices 1 FS bytes used 145.19GiB
devid 1 size 450.00GiB used 150.04GiB path /dev/sda1
pc63422:~ # btrfs fi df /
Data, single: total=146.01GiB, used=142.74GiB
System, single: total=32.00MiB, used=16.00KiB
Metadata, single: total=4.00GiB, used=2.44GiB
GlobalReserve, single: total=512.00MiB, used=0.00B
Thanks for any hint.
Bernd
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Bernd Lentes
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