linux文件系统只读模式解决方法

安宇雨 - 随手采集
2020-01-06 02:49:03
随手采集
0000-未整理-等待研究

接上篇《centos系统出现IO错误》，悲剧的事情发生了，我用fsck并没有解决该问题！！

开机过程中报了好多failure，包括mount failure、mysql start failure、samba failure…开机后，貌似一切正常，但是我知道这只是表面的，因为/目录已经是只读模式了！

下面看看分区挂载情况吧：

[root@jst-cn ~]# more /etc/mtab
proc /proc proc rw 0 0
[root@jst-cn ~]# df -h
文件系统容量已用可用已用% 挂载点
[root@jst-cn ~]# more /etc/fstab
**LABEL=/                 /dev/sda2             ext3    defaults        1 1
**LABEL=/other            /other                  ext3    defaults        1 2
LABEL=/home             /home                   ext3    defaults        1 2
LABEL=/tmp              /tmp                    ext3    defaults        1 2
LABEL=/test             /test                   ext3    defaults        1 2
LABEL=/www              /www                    ext3    defaults        1 2
LABEL=/usr              /usr                    ext3    defaults        1 2
LABEL=/tools            /tools                  ext3    defaults        1 2
LABEL=/var              /var                    ext3    defaults        1 2
LABEL=/data             /data                   ext3    defaults        1 2
LABEL=/backup           /backup                 ext3    defaults        1 2
**LABEL=/opt              /opt                    ext3    defaults        1 2
**LABEL=/boot             /boot                   ext3    defaults        1 2
tmpfs                   /dev/shm                tmpfs   defaults        0 0
devpts                  /dev/pts                devpts gid=5,mode=620 0 0
sysfs                   /sys                    sysfs   defaults        0 0
proc                    /proc                   proc    defaults        0 0
LABEL=SWAP-sda14        swap                    swap    defaults        0 0
[root@jst-cn ~]# more /proc/mounts
rootfs / rootfs rw 0 0
/dev/root / ext3 ro,data=ordered 0 0
/dev /dev tmpfs rw 0 0
/proc /proc proc rw 0 0
/sys /sys sysfs rw 0 0
/proc/bus/usb /proc/bus/usb usbfs rw 0 0
devpts /dev/pts devpts rw 0 0
/dev/sda15 /other ext3 rw,data=ordered 0 0
/dev/sda12 /home ext3 rw,data=ordered 0 0
/dev/sda11 /tmp ext3 rw,data=ordered 0 0
/dev/sda10 /test ext3 rw,data=ordered 0 0
/dev/sda9 /www ext3 rw,data=ordered 0 0
/dev/sda8 /usr ext3 rw,data=ordered 0 0
/dev/sda7 /tools ext3 rw,data=ordered 0 0
/dev/sda6 /var ext3 rw,data=ordered 0 0
/dev/sda5 /data ext3 rw,data=ordered 0 0
/dev/sda3 /backup ext3 rw,data=ordered 0 0
/dev/sda2 /opt ext3 rw,data=ordered 0 0
/dev/sda1 /boot ext3 rw,data=ordered 0 0
[root@jst-cn ~]# mount -o remount,rw /
mount: can’t find / in /etc/fstab or /etc/mtab
[root@jst-cn ~]# mount -o remount,rw /dev/root
mount: can’t find /dev/root in /etc/fstab or /etc/mtab
[root@jst-cn ~]# mount -o remount,rw /dev/sda2
mount: /dev/sda2 not mounted already, or bad option
[root@jst-cn ~]# mount -f
proc on /proc type proc (rw)
mount: warning /etc/mtab is not writable (e.g. read-only filesystem).
       It’s possible that information reported by mount( is not
       up to date. For actual information about system mount points
       check the /proc/mounts file.
[root@jst-cn ~]# mount -a
mount: /dev/sda13 already mounted or /dev/sda2 busy
mount: /dev/sda15 already mounted or /other busy
mount: /dev/sda12 already mounted or /home busy
mount: /dev/sda11 already mounted or /tmp busy
mount: /dev/sda10 already mounted or /test busy
mount: /dev/sda9 already mounted or /www busy
mount: /dev/sda8 already mounted or /usr busy
mount: /dev/sda7 already mounted or /tools busy
mount: /dev/sda6 already mounted or /var busy
mount: /dev/sda5 already mounted or /data busy
mount: /dev/sda3 already mounted or /backup busy
mount: /dev/sda2 already mounted or /opt busy
mount: /dev/sda1 already mounted or /boot busy
mount: devpts already mounted or /dev/pts busy
mount: sysfs already mounted or /sys busy
[root@jst-cn ~]# vim /var/log/messages
Jan 8 15:24:35 jst-cn smartd[3019]: smartd version 5.38 [i686-redhat-linux-gnu] Copyright (C) 2002-8 Bruce Allen
Jan 8 15:24:35 jst-cn smartd[3019]: Home page is
Jan 8 15:24:35 jst-cn smartd[3019]: Opened configuration file /etc/smartd.conf
Jan 8 15:24:35 jst-cn smartd[3019]: Configuration file /etc/smartd.conf was parsed, found DEVICESCAN, scanning devices
Jan 8 15:24:35 jst-cn smartd[3019]: Problem creating device name scan list
Jan 8 15:24:35 jst-cn smartd[3019]: Device: /dev/sda, opened
Jan 8 15:24:35 jst-cn smartd[3019]: Device /dev/sda: using ‘-d sat’ for ATA disk behind SAT layer.
Jan 8 15:24:35 jst-cn smartd[3019]: Device: /dev/sda, opened
Jan 8 15:24:35 jst-cn smartd[3019]: Device: /dev/sda, not found in smartd database.
Jan 8 15:24:36 jst-cn smartd[3019]: Device: /dev/sda, is SMART capable. Adding to "monitor" list.
Jan 8 15:24:36 jst-cn smartd[3019]: Device: /dev/sdb, opened
Jan 8 15:24:36 jst-cn smartd[3019]: Device /dev/sdb: using ‘-d sat’ for ATA disk behind SAT layer.
Jan 8 15:24:36 jst-cn smartd[3019]: Device: /dev/sdb, opened
Jan 8 15:24:36 jst-cn smartd[3019]: Device: /dev/sdb, found in smartd database.
Jan 8 15:24:36 jst-cn smartd[3019]: Device: /dev/sdb, is SMART capable. Adding to "monitor" list.
Jan 8 15:24:36 jst-cn smartd[3019]: Device: /dev/sdc, opened
Jan 8 15:24:36 jst-cn smartd[3019]: Device: /dev/sdc, Bad IEC (SMART) mode page, err=2, skip device
Jan 8 15:24:36 jst-cn smartd[3019]: Monitoring 0 ATA and 2 SCSI devices
Jan 8 15:24:36 jst-cn avahi-daemon[2989]: Server startup complete. Host name is jst-cn.local. Local service cookie is 1542459542.
Jan 8 15:24:36 jst-cn smartd[3021]: smartd has fork()ed into background mode. New PID=3021.