因为没有停机然后复制或者是创建出来的镜像文件，有可能系统盘直接损坏了，修复一下之后，重新用它来生成虚拟机，可以正常使用了
修复命令：
xfs_repair /dev/vda2 #这个不行用下面的，如果磁盘繁忙，umount一下
xfs_repair -L /dev/vda2
【1】定义虚拟机，发现磁盘文件损坏了
[[email protected] mcw]# virsh define mcw-vq21-cloudservice016.xml Domain mcw3 defined from mcw-vq21-cloudservice016.xml [[email protected] mcw]# virsh start mcw3 Domain mcw3 started [[email protected] mcw]# virsh console mcw3 Connected to domain mcw3 Escape character is ^] [ 1.684848] XFS (vda2): Metadata corruption detected at xfs_agi_write_verify+0xa8/0xb0 [xfs], xfs_agi block 0x4a3fa02 [ 1.686701] XFS (vda2): Unmount and run xfs_repair [ 1.687674] XFS (vda2): First 64 bytes of corrupted metadata buffer: [ 1.688899] ffff88022a7f7c00: 58 41 47 49 00 00 00 01 00 00 00 03 00 31 7f c0 XAGI.........1.. [ 1.690575] ffff88022a7f7c10: 00 01 68 80 00 00 f9 8e 00 00 00 02 00 00 00 26 ..h............& [ 1.692296] ffff88022a7f7c20: 00 00 43 c0 ff ff ff ff ff ff ff ff ff ff ff ff ..C............. [ 1.694060] ffff88022a7f7c30: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................ [ 1.695760] XFS (vda2): Corruption of in-memory data detected. Shutting down filesystem [ 1.696775] XFS (vda2): Please umount the filesystem and rectify the problem(s) [ 1.710076] systemd-fstab-generator[337]: Failed to open /sysroot/etc/fstab: Input/output error Generating "/run/initramfs/rdsosreport.txt" Entering emergency mode. Exit the shell to continue. Type "journalctl" to view system logs. You might want to save "/run/initramfs/rdsosreport.txt" to a USB stick or /boot after mounting them and attach it to a bug report. :/# cat /sysroot/etc/fstab cat: /sysroot/etc/fstab: Input/output error :/# xfs_repair -L /dev/vda2
【2】修复磁盘文件，有可能被挂载了，执行卸载然后修复
:/# xfs_repair -L /dev/vda2
xfs_repair: cannot open /dev/vda2: Device or resource busy
:/# ls /dev/vda
vda vda1 vda2
:/# ls /dev/vda2
/dev/vda2
:/# xfs_repair /dev/vda2
xfs_repair: cannot open /dev/vda2: Device or resource busy
:/# df -h
sh: df: command not found
:/# xfs_repair /dev/vda1
Phase 1 - find and verify superblock...
Phase 2 - using internal log
- zero log...
- scan filesystem freespace and inode maps...
- found root inode chunk
Phase 3 - for each AG...
- scan and clear agi unlinked lists...
- process known inodes and perform inode discovery...
- agno = 0
- agno = 1
- agno = 2
- agno = 3
- process newly discovered inodes...
Phase 4 - check for duplicate blocks...
- setting up duplicate extent list...
- check for inodes claiming duplicate blocks...
- agno = 0
- agno = 1
- agno = 2
- agno = 3
Phase 5 - rebuild AG headers and trees...
- reset superblock...
Phase 6 - check inode connectivity...
- resetting contents of realtime bitmap and summary inodes
- traversing filesystem ...
- traversal finished ...
- moving disconnected inodes to lost+found ...
Phase 7 - verify and correct link counts...
done
:/# xfs_repair /dev/vda2
xfs_repair: cannot open /dev/vda2: Device or resource busy
:/# umount /dev/vda2
:/# xfs_repair /dev/vda2
Phase 1 - find and verify superblock...
Phase 2 - using internal log
- zero log...
ERROR: The filesystem has valuable metadata changes in a log which needs to
be replayed. Mount the filesystem to replay the log, and unmount it before
re-running xfs_repair. If you are unable to mount the filesystem, then use
the -L option to destroy the log and attempt a repair.
Note that destroying the log may cause corruption -- please attempt a mount
of the filesystem before doing this.
:/# xfs_repair -L /dev/vda2
Phase 1 - find and verify superblock...
Phase 2 - using internal log
- zero log...
ALERT: The filesystem has valuable metadata changes in a log which is being
destroyed because the -L option was used.
- scan filesystem freespace and inode maps...
agi_freecount 38, counted 39 in ag 3
agi unlinked bucket 62 is 510462 in ag 3 (inode=101173758)
agi_freecount 12, counted 11 in ag 0
sb_icount 2700736, counted 2702336
sb_ifree 521, counted 484
sb_fdblocks 2615441, counted 2537173
- found root inode chunk
Phase 3 - for each AG...
- scan and clear agi unlinked lists...
- process known inodes and perform inode discovery...
- agno = 0
- agno = 1
data fork in ino 34544933 claims free block 6779746
data fork in ino 34544933 claims free block 6779747
data fork in regular inode 41280440 claims used block 5980457
correcting nextents for inode 41280440
bad data fork in inode 41280440
cleared inode 41280440
- agno = 2
- agno = 3
- process newly discovered inodes...
Phase 4 - check for duplicate blocks...
- setting up duplicate extent list...
- check for inodes claiming duplicate blocks...
- agno = 1
- agno = 0
- agno = 2
entry "crash.log" in shortform directory 33572697 references free inode 41280440
junking entry "crash.log" in directory inode 33572697
- agno = 3
data fork in ino 35349723 claims dup extent, off - 496, start - 5980457, cnt 512
correcting nextents for inode 35349723
bad data fork in inode 35349723
cleared inode 35349723
entry "4245F16B0F76" at block 14044 offset 2512 in directory inode 614085 references free inode 23793526
clearing inode number in entry at offset 2512...
Phase 5 - rebuild AG headers and trees...
- reset superblock...
Phase 6 - check inode connectivity...
- resetting contents of realtime bitmap and summary inodes
- traversing filesystem ...
bad hash table for directory inode 614085 (no leaf entry): rebuilding
rebuilding directory inode 614085
entry "1946a8d2d31374a30aaaee7ae20de21adb498e4a18dd65112e517a1b20150816-json.log" in directory inode 35349704 points to free inode 35349723
bad hash table for directory inode 35349704 (no data entry): rebuilding
rebuilding directory inode 35349704
- traversal finished ...
- moving disconnected inodes to lost+found ...
Phase 7 - verify and correct link counts...
Metadata corruption detected at xfs_dir3_block block 0x1aceee0/0x1000
libxfs_writebufr: write verifer failed on xfs_dir3_block bno 0x1aceee0/0x1000
Maximum metadata LSN (14355:22814) is ahead of log (1:2).
Format log to cycle 14358.
releasing dirty buffer (bulk) to free list!done
:/#
【3】退出，用磁盘文件创建新的虚拟机，查看是否可以正常用,结果是可以
[[email protected] mcw]# virsh destroy mcw3 Domain mcw3 destroyed [[email protected] mcw]# virsh undefine mcw3 Domain mcw3 has been undefined [[email protected] mcw]# virsh define mcw-vq21-cloudservice016.xml Domain mcw3 defined from mcw-vq21-cloudservice016.xml [[email protected] mcw]# virsh start mcw3 Domain mcw3 started [[email protected] mcw]# virsh console mcw3 Connected to domain mcw3 Escape character is ^] CentOS Linux 7 (Core) Kernel 4.14.15-1.el7.elrepo.x86_64 on an x86_64 vm-qa-cloudservice016 login: root Password: Last login: Tue Jun 4 15:03:42 on pts/0 [[email protected] ~]# hostname -I 172.17.0.1 172.18.0.1 [[email protected] ~]# ls /home/apps/ packages sserver user_account [[email protected] ~]#
标签：...,00,kvm,vda2,镜像文件,ff,openstack,xfs,inode From： https://www.cnblogs.com/machangwei-8/p/18258710