BTRFS Mount Trapped in Snapper Rollback

1. Сначала мне нужно добавить эту строку в/etc/fstab

   % sudo nano /etc/fstab
   UUID=e901452a-b3ea-48d2-acdb-6687fad0be50 /.snapshots btrfs subvol=@/.snapshots   0 0
   

   и смонтируйте его, перезагрузка не требуется.

   % sudo mount /.snapshots
   

2. Получить текущий снимок

   В моем случае ранее у меня был снимок номер 75.

   % sudo btrfs subvolume show /
   
   @/.snapshots/45/snapshot
       Name:           snapshot
       UUID:           29d4436b-72d1-f14d-a9e9-f04b70c0ebe0
       Parent UUID:        efa9f21b-f3b7-3543-9649-3897e083b39d
       Received UUID:      -
       Creation time:      2018-01-03 00:15:01 +0700
       Subvolume ID:       355
       Generation:         5677
       Gen at creation:    3968
       Parent ID:      301
       Top level ID:       301
       Flags:          -
       Snapshot(s):
                   @/.snapshots/50/snapshot
                   @/.snapshots/51/snapshot
   

   и

   % sudo btrfs subvolume get-default /
   
   ID 355 gen 5682 top level 301 path @/.snapshots/45/snapshot 
   

3. снэппер % список sudo snapper

   Type   | #  | Pre # | Date                            | User | Cleanup  | Description  | Userdata     
   -------+----+-------+---------------------------------+------+----------+--------------+--------------
   single | 0  |       |                                 | root |          | current      |              
   single | 3  |       | Mon 01 Jan 2018 02:45:03 PM WIB | root | timeline | timeline     |              
   single | 7  |       | Mon 01 Jan 2018 04:30:01 PM WIB | root | timeline | timeline     |              
   single | 40 |       | Tue 02 Jan 2018 10:15:01 PM WIB | root | timeline | timeline     |              
   single | 41 |       | Tue 02 Jan 2018 10:52:35 PM WIB | root |          | backup.epsi  |              
   pre    | 42 |       | Tue 02 Jan 2018 11:01:48 PM WIB | root | number   | zypp(zypper) | important=yes
   post   | 43 | 42    | Tue 02 Jan 2018 11:07:23 PM WIB | root | number   |              | important=yes
   single | 44 |       | Tue 02 Jan 2018 11:15:01 PM WIB | root | timeline | timeline     |              
   single | 45 |       | Wed 03 Jan 2018 12:15:01 AM WIB | root | timeline | timeline     |              
   pre    | 46 |       | Wed 03 Jan 2018 12:16:34 AM WIB | root | number   | zypp(zypper) | important=no 
   post   | 47 | 46    | Wed 03 Jan 2018 12:19:38 AM WIB | root | number   |              | important=no 
   pre    | 48 |       | Wed 03 Jan 2018 12:47:47 AM WIB | root | number   | zypp(zypper) | important=no 
   post   | 49 | 48    | Wed 03 Jan 2018 12:48:10 AM WIB | root | number   |              | important=no 
   ...
   

   Решаю вернуться к 45.

4. Идентификатор BTRFS

   % sudo btrfs subvolume list -a /
   
   ID 257 gen 4804 top level 5 path <FS_TREE>/@
   ID 258 gen 5096 top level 257 path <FS_TREE>/@/opt
   ID 259 gen 4157 top level 257 path <FS_TREE>/@/srv
   ID 260 gen 5672 top level 257 path <FS_TREE>/@/tmp
   ID 261 gen 5538 top level 257 path <FS_TREE>/@/usr/local
   ID 262 gen 5688 top level 257 path <FS_TREE>/@/var/cache
   ID 263 gen 4157 top level 257 path <FS_TREE>/@/var/crash
   ID 264 gen 4157 top level 257 path <FS_TREE>/@/var/lib/libvirt/images
   ID 265 gen 4157 top level 257 path <FS_TREE>/@/var/lib/machines
   ID 266 gen 4157 top level 257 path <FS_TREE>/@/var/lib/mailman
   ID 267 gen 4157 top level 257 path <FS_TREE>/@/var/lib/mariadb
   ID 268 gen 4157 top level 257 path <FS_TREE>/@/var/lib/mysql
   ID 269 gen 4157 top level 257 path <FS_TREE>/@/var/lib/named
   ID 270 gen 4157 top level 257 path <FS_TREE>/@/var/lib/pgsql
   ID 271 gen 5688 top level 257 path <FS_TREE>/@/var/log
   ID 272 gen 4157 top level 257 path <FS_TREE>/@/var/opt
   ID 273 gen 5688 top level 257 path <FS_TREE>/@/var/spool
   ID 274 gen 5672 top level 257 path <FS_TREE>/@/var/tmp
   ID 301 gen 5674 top level 257 path <FS_TREE>/@/.snapshots
   ID 304 gen 3008 top level 301 path <FS_TREE>/@/.snapshots/3/snapshot
   ID 311 gen 3160 top level 301 path <FS_TREE>/@/.snapshots/7/snapshot
   ID 345 gen 3737 top level 301 path <FS_TREE>/@/.snapshots/40/snapshot
   ID 350 gen 3849 top level 301 path <FS_TREE>/@/.snapshots/41/snapshot
   ID 351 gen 3862 top level 301 path <FS_TREE>/@/.snapshots/42/snapshot
   ID 353 gen 3874 top level 301 path <FS_TREE>/@/.snapshots/43/snapshot
   ID 354 gen 3887 top level 301 path <FS_TREE>/@/.snapshots/44/snapshot
   ID 355 gen 5688 top level 301 path <FS_TREE>/@/.snapshots/45/snapshot
   ID 356 gen 3972 top level 301 path <FS_TREE>/@/.snapshots/46/snapshot
   ID 357 gen 3980 top level 301 path <FS_TREE>/@/.snapshots/47/snapshot
   ID 358 gen 4021 top level 301 path <FS_TREE>/@/.snapshots/48/snapshot
   ID 359 gen 4022 top level 301 path <FS_TREE>/@/.snapshots/49/snapshot
   

   Я нахожу ID 45, это 355.

5. Изменить значение по умолчанию

   Сделать его доступным для записи

   % sudo btrfs property set -ts /.snapshots/45/snapshot ro false
   

   И сделать его по умолчанию

   % sudo btrfs subvolume set-default 355 /
   

   Затем перезагрузите

6. Удалите раздражающий моментальный снимок отката.

   % sudo snapper delete 75
   
   % sudo snapper delete 76
   
   % sudo snapper delete 77
   
   % sudo snapper list
   

Вот и все

Спасибо