为什么root用户不能在var目录下删／建文件或目录

hncdsun

为什么root用户在var目录下不能干任何事？

情况如下：

[root@xxx var]# pwd
/var
[root@xxx var]# id root
uid=0(root) gid=0(root) groups=0(root),1(bin),2(daemon),3(sys),4(adm),6(disk),10(wheel),28889(vtune)
[root@xxx var]# mkdir testss
mkdir: 无法创建目录‘testss’: 只读文件系统

ailms

文件系统是只读的，root 也没有用

mount 查看 /var 所在分区是否以 ro 挂载

寂寞烈火

root可以, 除非你取消了写权限

hncdsun

原帖由 寂寞烈火 于 2007-7-25 01:12 发表
root可以, 除非你取消了写权限

有写权限，我在别的机子上都是可以的。我ll了一下：
drwxr-xr-x   26 root    root     4096  3月  7 15:01 var

这是另外一台可以mkdir的var
drwxr-xr-x    18 root   root    4096 May 14 04:29 var

hncdsun

原帖由 ailms 于 2007-7-24 18:40 发表
文件系统是只读的，root 也没有用

mount 查看 /var 所在分区是否以 ro 挂载

ailms我看了，不是以只读方式挂载的，还有别的什么原因吗？

[root@xxx /]# mount -l

....
/dev/hda9 on /tmp type ext3 (rw) [/tmp]
/dev/hda5 on /usr type ext3 (rw) [/usr]
/dev/hda7 on /var type ext3 (rw) [/var]
/dev/hda4 on /mnt/fat type vfat (rw)
none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)
sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw)

mxbao

如果是这个问题,很可能是文件系统出了问题
或者硬盘有问题...

ailms

是有点奇怪啊

1）dmesg 有什么错误信息吗？

2）blockdev --getro /dev/hda7 返回什么？

hncdsun

[root@xxx /]# blockdev --getro /dev/hda7
0

[root@xxx /]# dmesg
...
hda: dma_intr: status=0x51 { DriveReady SeekComplete Error }
hda: dma_intr: error=0x40 { UncorrectableError }, LBAsect=65998591, high=3, low=15666943, sector=65998591
ide: failed opcode was: unknown
end_request: I/O error, dev hda, sector 65998591
EXT3-fs error (device hda7): ext3_free_branches: Read failure, inode=409738, block=843851
Aborting journal on device hda7.
ext3_abort called.
EXT3-fs error (device hda7): ext3_journal_start_sb: Detected aborted journal
Remounting filesystem read-only
EXT3-fs error (device hda7) in start_transaction: Journal has aborted
EXT3-fs error (device hda7) in ext3_reserve_inode_write: Journal has aborted
EXT3-fs error (device hda7) in ext3_reserve_inode_write: Journal has aborted
EXT3-fs error (device hda7) in ext3_orphan_del: Journal has aborted
EXT3-fs error (device hda7) in ext3_truncate: Journal has aborted
__journal_remove_journal_head: freeing b_committed_data
EXT3-fs error (device hda7) in start_transaction: Journal has aborted
EXT3-fs error (device hda7) in start_transaction: Journal has aborted
EXT3-fs error (device hda7) in start_transaction: Journal has aborted
EXT3-fs error (device hda7) in start_transaction: Journal has aborted
EXT3-fs error (device hda7) in start_transaction: Journal has aborted
EXT3-fs error (device hda7) in start_transaction: Journal has aborted
EXT3-fs error (device hda7) in start_transaction: Journal has aborted
EXT3-fs error (device hda7) in start_transaction: Journal has aborted
EXT3-fs error (device hda7) in start_transaction: Journal has aborted
EXT3-fs error (device hda7) in start_transaction: Journal has aborted
EXT3-fs error (device hda7) in start_transaction: Journal has aborted
EXT3-fs error (device hda7) in start_transaction: Journal has aborted
EXT3-fs error (device hda7) in start_transaction: Journal has aborted
ext3_abort called.
EXT3-fs error (device hda7): ext3_remount: Abort forced by user
ext3_abort called.
EXT3-fs error (device hda7): ext3_remount: Abort forced by user

---------------------------
这上面是什么错误？怎么解决？

运行下面的显示为只读
[root@xxx /]# cat /proc/mounts

...
/dev/hda7 /var ext3 ro 0 0
/dev/hda4 /mnt/fat vfat rw,nodiratime,fmask=0022,dmask=0022 0 0
none /proc/sys/fs/binfmt_misc binfmt_misc rw 0 0
sunrpc /var/lib/nfs/rpc_pipefs rpc_pipefs rw 0 0

ailms

EXT3-fs error (device hda7): ext3_free_branches: Read failure, inode=409738, block=843851
Aborting journal on device hda7.

似乎 ext3 放弃了日志功能

那

1. 
   
2. mount -o remount -t ext2 /dev/hda7
   

复制代码

不过lz还是先准备好备份工作吧

samy

可能硬盘有问题