opensuse-microos-delete-snapshots
概述
不可变操作系统opensuse microos,解决删除历史快照
- 回滚
MicroOS是个不可变的操作系统，可轻松回滚不可变，磁盘上不会有更改可重启，到旧的 BTRFS 快照来回滚
env
- opensuse-microos
delete snapshot(delete disk snapshots in SUSE)
#btrfs snapshot
/.snapshots/x/snapshot
//List available available snapper configs
gaga-90:~ # snapper list-configs
Config | Subvolume
-------+----------
root | /
//List available available snapper configs
gaga-90:~ # snapper --config root list
# | Type | Pre # | Date | User | Used Space | Cleanup | Description | Userdata
---+--------+-------+--------------------------+------+------------+---------+-----------------------+---------
0 | single | | | root | | | current |
8* | single | | Fri Dec 2 21:30:19 2022 | root | 730.67 MiB | | Snapshot Update of #7 | //current from snapshot
//Delete snapshot based on snapshot number
snapper --config root delete 2
snapper --config root delete 1-10 //delete number 1..10
gaga-90:~ # snapper --config root delete 8
Cannot delete snapshot 8 since it is the currently mounted snapshot. //不可变
gaga-90:~ # snapper --config root delete 0
Cannot delete snapshot 0 since it is the current system. //挂载可写层
force snapper
问题
gaga-90:~ # transactional-update status
transactional-update 4.1.0 started
Options: status
Separate /var detected.
--------------------------------------------------------------------------------------------------------------------
Snapshot: 8* [2022-12-02 13:30:19]
Description: Snapshot Update of #7
(Missing status file)
--------------------------------------------------------------------------------------------------------------------
grep: /.snapshots/3/info.xml: No such file or directory //由于人工删除过目录导致异常，必须强制删除
/sbin/transactional-update: line 720: [: : integer expression expected
/sbin/transactional-update: line 722: [: : integer expression expected
grep: /.snapshots/3/info.xml: No such file or directory
grep: /.snapshots/3/info.xml: No such file or directory
grep: /.snapshots/3/info.xml: No such file or directory
Snapshot: []
grep: /.snapshots/3/info.xml: No such file or directory
Description:
(Missing status file)
--------------------------------------------------------------------------------------------------------------------
grep: /.snapshots/2/info.xml: No such file or directory
/sbin/transactional-update: line 720: [: : integer expression expected
/sbin/transactional-update: line 722: [: : integer expression expected
grep: /.snapshots/2/info.xml: No such file or directory
grep: /.snapshots/2/info.xml: No such file or directory
grep: /.snapshots/2/info.xml: No such file or directory
Snapshot: []
grep: /.snapshots/2/info.xml: No such file or directory
Description:
(Missing status file)
解决
transactional-update status
btrfs subvolume delete /.snapshots/SNAPSHOTNUMBER/snapshot
rm -rf /.snapshots/SNAPSHOTNUMBER
btrfs
gaga-90:~ # btrfs --help
usage: btrfs [--help] [--version] [--format <format>] [-v|--verbose] [-q|--quiet] <group> [<group>...] <command> [<args>]
btrfs balance start [options] <path>
Balance chunks across the devices
btrfs balance pause <path>
Pause running balance
btrfs balance cancel <path>
Cancel running or paused balance
btrfs balance resume <path>
Resume interrupted balance
btrfs balance status [-v] <path>
Show status of running or paused balance
btrfs check [options] <device>
Check structural integrity of a filesystem (unmounted).
btrfs device add [options] <device> [<device>...] <path>
Add one or more devices to a mounted filesystem.
btrfs device delete <device>|<devid> [<device>|<devid>...] <path>
btrfs device remove <device>|<devid> [<device>|<devid>...] <path>
Remove a device from a filesystem
btrfs device replace <command> [...]
Replace a device (alias of "btrfs replace")
btrfs device scan [-d|--all-devices] <device> [<device>...]
btrfs device scan -u|--forget [<device>...]
Scan or forget (unregister) devices of btrfs filesystems
btrfs device ready <device>
Check and wait until a group of devices of a filesystem is ready for mount
btrfs device stats [options] <path>|<device>
Show device IO error statistics
btrfs device usage [options] <path> [<path>..]
Show detailed information about internal allocations in devices.
btrfs filesystem df [options] <path>
Show space usage information for a mount point
btrfs filesystem du [options] <path> [<path>..]
Summarize disk usage of each file.
btrfs filesystem show [options] [<path>|<uuid>|<device>|label]
Show the structure of a filesystem
btrfs filesystem sync <path>
Force a sync on a filesystem
btrfs filesystem defragment [options] <file>|<dir> [<file>|<dir>...]
Defragment a file or a directory
btrfs filesystem resize [options] [devid:][+/-]<newsize>[kKmMgGtTpPeE]|[devid:]max <path>
Resize a filesystem
btrfs filesystem label [<device>|<mount_point>] [<newlabel>]
Get or change the label of a filesystem
btrfs filesystem usage [options] <path> [<path>..]
Show detailed information about internal filesystem usage .
btrfs inspect-internal inode-resolve [-v] <inode> <path>
Get file system paths for the given inode
btrfs inspect-internal logical-resolve [-Pvo] [-s bufsize] <logical> <path>
Get file system paths for the given logical address
btrfs inspect-internal subvolid-resolve <subvolid> <path>
Get file system paths for the given subvolume ID.
btrfs inspect-internal rootid <path>
Get tree ID of the containing subvolume of path.
btrfs inspect-internal min-dev-size [options] <path>
Get the minimum size the device can be shrunk to
btrfs inspect-internal dump-tree [options] <device> [<device> ..]
Dump tree structures from a given device
btrfs inspect-internal dump-super [options] device [device...]
Dump superblock from a device in a textual form
btrfs inspect-internal tree-stats [options] <device>
Print various stats for trees
btrfs property get [-t <type>] <object> [<name>]
Get a property value of a btrfs object
btrfs property set [-f] [-t <type>] <object> <name> <value>
Set a property on a btrfs object
btrfs property list [-t <type>] <object>
Lists available properties with their descriptions for the given object
btrfs qgroup assign [options] <src> <dst> <path>
Assign SRC as the child qgroup of DST
btrfs qgroup remove [options] <src> <dst> <path>
Remove a child qgroup SRC from DST.
btrfs qgroup create <qgroupid> <path>
Create a subvolume quota group.
btrfs qgroup destroy <qgroupid> <path>
Destroy a quota group.
btrfs qgroup show [options] <path>
Show subvolume quota groups.
btrfs qgroup limit [options] <size>|none [<qgroupid>] <path>
Set the limits a subvolume quota group.
btrfs quota enable <path>
Enable subvolume quota support for a filesystem.
btrfs quota disable <path>
Disable subvolume quota support for a filesystem.
btrfs quota rescan [-sw] <path>
Trash all qgroup numbers and scan the metadata again with the current config.
btrfs receive [options] <mount>
btrfs receive --dump [options]
Receive subvolumes from a stream
btrfs replace start [-Bfr] <srcdev>|<devid> <targetdev> <mount_point>
Replace device of a btrfs filesystem.
btrfs replace status [-1] <mount_point>
Print status and progress information of a running device replace operation
btrfs replace cancel <mount_point>
Cancel a running device replace operation.
btrfs rescue chunk-recover [options] <device>
Recover the chunk tree by scanning the devices one by one.
btrfs rescue super-recover [options] <device>
Recover bad superblocks from good copies
btrfs rescue zero-log <device>
Clear the tree log. Usable if it's corrupted and prevents mount.
btrfs rescue fix-device-size <device>
Re-align device and super block sizes. Usable if newer kernel refuse to mount it due to mismatch super size
btrfs rescue create-control-device
Create /dev/btrfs-control (see 'CONTROL DEVICE' in btrfs(5))
btrfs rescue clear-uuid-tree
Delete uuid tree so that kernel can rebuild it at mount time
btrfs restore [options] <device> <path>
btrfs restore [options] -l <device>
Try to restore files from a damaged filesystem (unmounted)
btrfs scrub start [-BdqrRf] [-c ioprio_class -n ioprio_classdata] <path>|<device>
Start a new scrub. If a scrub is already running, the new one fails.
btrfs scrub cancel <path>|<device>
Cancel a running scrub
btrfs scrub resume [-BdqrR] [-c ioprio_class -n ioprio_classdata] <path>|<device>
Resume previously canceled or interrupted scrub
btrfs scrub status [-dR] <path>|<device>
Show status of running or finished scrub
btrfs send [-ve] [-p <parent>] [-c <clone-src>] [-f <outfile>] <subvol> [<subvol>...]
Send the subvolume(s) to stdout.
btrfs subvolume create [-i <qgroupid>] [<dest>/]<name>
Create a subvolume
btrfs subvolume delete [options] <subvolume> [<subvolume>...]
btrfs subvolume delete [options] -i|--subvolid <subvolid> <path> //删除subvolume
Delete subvolume(s)
btrfs subvolume list [options] <path>
List subvolumes and snapshots in the filesystem.
btrfs subvolume snapshot [-r] [-i <qgroupid>] <subvolume> { <subdir>/<name> | <subdir> }
btrfs subvolume get-default <path>
Get the default subvolume of a filesystem
btrfs subvolume set-default <subvolume>
btrfs subvolume set-default <subvolid> <path>
Set the default subvolume of the filesystem mounted as default.
btrfs subvolume find-new <path> <lastgen>
List the recently modified files in a filesystem
btrfs subvolume show [options] <path>
Show more information about the subvolume (UUIDs, generations, times, snapshots)
btrfs subvolume sync <path> [<subvol-id>...]
Wait until given subvolume(s) are completely removed from the filesystem.
btrfs help [--full] [--box]
Display help information
btrfs version
Display btrfs-progs version
Use --help as an argument for information on a specific group or command.
Options for --format are: text, json
gaga-90:~ #
