linux磁盘容量变为64Z

ゝ一世哀愁。 2022-06-11 03:52 306阅读 0赞

author:skate

time:2012/06/05

**linux磁盘容量变为64Z**

\[root@localhost ~\]\# df -h  
文件系统              容量  已用 可用 已用% 挂载点  
/dev/sda3             255G  2.6G  240G   2% /  
/dev/sda1              99M   18M   77M  19% /boot  
tmpfs                  16G     0   16G   0% /dev/shm  
/dev/sdb1              64Z   64Z   91G 100% /search  
\[root@localhost ~\]\# ll /search/  
总计 0  
\[root@localhost ~\]\#  
\[root@localhost ~\]\#  
\[root@localhost ~\]\# ll /search/  
总计 0  
\[root@localhost ~\]\# df -hT /search/  
文件系统      类型    容量  已用 可用 已用% 挂载点  
/dev/sdb1     ext3     64Z   64Z   91G 100% /search

\[root@localhost ~\]\# ll /dev/sdb1  
brw-r----- 1 root disk 8, 17 06-04 18:38 /dev/sdb1

卸载文件系统

\[root@localhost ~\]\# umount /search

\[root@localhost ~\]\# df -h  
文件系统              容量  已用 可用 已用% 挂载点  
/dev/sda3             255G  2.6G  240G   2% /  
/dev/sda1              99M   18M   77M  19% /boot  
tmpfs                  16G     0   16G   0% /dev/shm

\[root@localhost ~\]\# mount -t ext3 /dev/sdb1 /search  
mount: wrong fs type, bad option, bad superblock on /dev/sdb1,  
       missing codepage or other error  
       In some cases useful info is found in syslog - try  
       dmesg | tail  or so

说明superblock已经损坏，如果没有重要数据可以重建，如下：

\[root@localhost ~\]\# mkfs.ext3 /dev/sdb1  
mke2fs 1.39 (29-May-2006)  
Filesystem label=  
OS type: Linux  
Block size=4096 (log=2)  
Fragment size=4096 (log=2)  
12140544 inodes, 24280231 blocks  
1214011 blocks (5.00%) reserved for the super user  
First data block=0  
Maximum filesystem blocks=4294967296  
741 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, 20480000, 23887872

Writing inode tables: done                             
Creating journal (32768 blocks): done  
Writing superblocks and filesystem accounting information: done

This filesystem will be automatically checked every 39 mounts or  
180 days, whichever comes first.  Use tune2fs -c or -i to override.

重新mount文件系统

\[root@localhost ~\]\# mount -t ext3 /dev/sdb1 /search  
\[root@localhost ~\]\# df -h  
文件系统              容量  已用 可用 已用% 挂载点  
/dev/sda3             255G  2.6G  240G   2% /  
/dev/sda1              99M   18M   77M  19% /boot  
tmpfs                  16G     0   16G   0% /dev/shm  
/dev/sdb1              92G  188M   87G   1% /search  
\[root@localhost ~\]\#

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