Linux LVM逻辑卷错误恢复一例

使用LVM建立了一个逻辑卷为/dev/mapper/test-test。由于异常关机，造了逻辑卷错误，无法挂载。于是检查逻辑卷，提示：# fsck.ext3 -f /dev/mapper/test-test
e2fsck 1.38 （30-Jun-2005）
fsck.ext3: Attempt to read block from filesystem resulted in short read while trying to open /dev/mapper/test-test
Could this be a zero-length partition？然后，查看了一下这个逻辑卷的信息：# mkfs.ext3 -n /dev/mapper/test-test
mke2fs 1.38 （30-Jun-2005）
Filesystem label=
OS type: Linux
Block size=4096 （log=2）
Fragment size=4096 （log=2）
6553600 inodes, 13107200 blocks
655360 blocks （5.00%） reserved for the super user
First data block=0
400 block groups
32768 blocks per group, 32768 fragments per group
16384 inodes per group
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,
4096000, 7962624, 11239424然后，尝试了一下，用备用超级块来修复：# fsck.ext3 -b 163840 /dev/mapper/test-test
e2fsck 1.38 （30-Jun-2005）
fsck.ext3: Attempt to read block from filesystem resulted in short read while trying to open /dev/mapper/test-test
Could this be a zero-length partition？结果仍然报错。那就再试试重启lvm服务吧，执行/etc/init.d/lvm stop/etc/init.d/lvm start然后再执行：# fsck.ext3 -b 163840 /dev/mapper/test-test
e2fsck 1.38 （30-Jun-2005）
ext3 recovery flag is clear, but journal has data.
Recovery flag not set in backup superblock, so running journal anyway.
/dev/mapper/test-test: recovering journal
Pass 1: Checking inodes, blocks, and sizes
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information/dev/mapper/test-test: ***** FILE SYSTEM WAS MODIFIED *****
/dev/mapper/test-test: 31/6553600 files （3.2% non-contiguous）, 1823265/13107200 blocks执行/etc/init.d/checkfs.sh start，也可检查、修复文件系统。Ubuntu 11.04 Amd64 试用：Chrome浏览器安装 Adobe FlashLinux数据恢复专题——恢复丢失的分区相关资讯 Linux教程

Linux教程：如何在命令行中查看目（07/28/2014 12:22:23）
Linux 修改root密码（11/03/2012 07:53:38）
su - root 与su root的区别（06/06/2012 00:39:40）

Linux进程间通信：消息队列（01/28/2013 09:43:00）
U盘安装Linux开机无法启动解决方法（10/07/2012 08:55:52）
Windows 7/Linux 同步时间（05/15/2012 06:17:55）

本文评论查看全部评论（0）