Linux系統掛載存儲變成只讀的解決方案

Linux系統掛載存儲變成只讀的解決方案

1、mount:
用於查看哪個模塊輸入只讀，一般顯示為：
[root@localhost ~]# mount
/dev/cciss/c0d0p2 on / type ext3 (rw)
proc on /proc type proc (rw)
sysfs on /sys type sysfs (rw)
devpts on /dev/pts type devpts (rw,gid=5,mode=620)
/dev/cciss/c0d0p7 on /home type ext3 (rw)
/dev/cciss/c0d0p6 on /var type ext3 (rw)
/dev/cciss/c0d0p3 on /usr type ext3 (rw)
/dev/cciss/c0d0p1 on /boot type ext3 (rw)
tmpfs on /dev/shm type tmpfs (rw)
none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)
sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw)
/dev/dm-0 on /home/book/upload/BookFile1 type ext3 (rw)
/dev/dm-1 on /home/book/upload/BookFile2 type ext3 (rw)
/dev/dm-2 on /backup type ext3 (rw)
/dev/dm-3 on /home/book/upload/BookFile3 type ext3 (ro)

2、如果發現有ro，就重新mount，或者umount以後再remount

3、umount /dev/dm-3

如果發現有提示“device is busy”，找到是什麼進程使得他busy
fuser -m /mnt/data 將會顯示使用這個模塊的pid
fuser -mk /mnt/data 將會直接kill那個pid
然後重新mount即可。

4、還有一種方法是直接remount，命令為
mount -o rw,remount /mnt/data 沒有用過，看到網絡上有這麼寫。