用户反应写不了/tmp
root登录后提示
the home directory /root is not writtable
cat /proc/mounts
发现这个变ro只读了
/dev/sda3 / ext4 ro,relatime,barrier=1,data=ordered 0 0
尝试重新挂载，显示：
[root@login2 ~]# mount -o remount,rw /
mount: cannot remount block device /dev/sda3 read-write, is write-protected
[root@login2 ~]#
[root@login2 ~]# dmesg
最后一部分显示：
end_request: I/O error, dev sda, sector 1175291888
Aborting journal on device sda3-8.
EXT4-fs (sda3): ext4_da_writepages: jbd2_start: 1021 pages, ino 50070556; err -30
EXT4-fs (sda3): ext4_da_writepages: jbd2_start: 9223372036854775803 pages, ino 9588613; err -30
EXT4-fs error (device sda3): ext4_journal_start_sb:
EXT4-fs error (device sda3): ext4_journal_start_sb: Detected aborted journal
EXT4-fs (sda3): Remounting filesystem read-only
Detected aborted journal
journal commit I/O error
journal commit I/O error
EXT4-fs error (device sda3): ext4_remount: Abort forced by user
我该怎么恢复？
这种情况比较危险了，可能是磁盘有损坏