Hello,

I run the df -h command, /dev/sda5 (/) is not shown in the result.

I run the command cat /proc/mounts, I do see the following
rootfs / rootfs rw 0 0
/dev/root / ext3 rw,data=ordered,usrquota 0 0


Thanks for your help.

What is in /etc/mtab?

Also, look in /dev to see what /dev/root is linked to

Hello,

The following is what's in /ect/mtab. The root is not listed. Is it the problem? Thanks a lot for the help.


/dev/sda1 /boot ext3 rw 0 0
tmpfs /dev/shm tmpfs rw 0 0
/dev/sda7 /home ext3 rw,usrquota 0 0
/dev/sda8 /tmp ext3 rw,noexec,nosuid 0 0
/dev/sda3 /usr ext3 rw,usrquota 0 0
/dev/sda2 /var ext3 rw,usrquota 0 0
none /proc/sys/fs/binfmt_misc binfmt_misc rw 0 0
/tmp /var/tmp none rw,noexec,nosuid,bind 0 0
/dev/sdb1 /backup ext2 rw 0 0

So----
sda5 is not mounted anywhere
Nothing is mounted at "/"

How is this system even running at all????!!!!

In /boot/grub/menu.lst, what is in the "root= " statement on the kernel line?

Hello,

The file is like this.

# Note that you do not have to rerun grub after making changes to this file
# NOTICE: You have a /boot partition. This means that
# all kernel and initrd paths are relative to /boot/, eg.
# root (hd0,0)
# kernel /vmlinuz-version ro root=/dev/sda5
# initrd /initrd-version.img
#boot=/dev/sda
default=0
timeout=20
#splashimage=(hd0,0)/grub/splash.xpm.gz
hiddenmenu
title CentOS (2.6.18-8.el5)
root (hd0,0)
kernel /vmlinuz-2.6.18-8.el5 ro root=LABEL=/1 console=tty0 console=ttyS1,19200n8
initrd /initrd-2.6.18-8.el5.img

Hello,

The root is listed in fstab file.

LABEL=/1 / ext3 defaults,usrquota 1 1
LABEL=/boot1 /boot ext3 defaults 1 2
devpts /dev/pts devpts gid=5,mode=620 0 0
tmpfs /dev/shm tmpfs defaults 0 0
LABEL=/home1 /home ext3 defaults,usrquota 1 2
proc /proc proc defaults 0 0
sysfs /sys sysfs defaults 0 0
LABEL=/tmp1 /tmp ext3 defaults 1 2
LABEL=/usr1 /usr ext3 defaults,usrquota 1 2
LABEL=/var1 /var ext3 defaults,usrquota 1 2
LABEL=SWAP-sda6 swap swap pri=0,defaults 0 0
/tmp /var/tmp ext3 defaults,bind,noauto 0 0
/dev/sdb1 /backup ext2 defaults 0 0

I'm now in over my head---I know nothing of the RedHat labelling (except that I don't like it...)

So---for someone: Why does this line in fstab:
LABEL=/1 / ext3 defaults,usrquota 1 1
not result in an mtab entry??

wabaha: any chance that the mtab file got snipped in the cut 'n paste?

Hello,

The root entry is indeed not in the mtab file.

The root file system is on a RAID 1 disk. Is it possilbe that somehow the raid control has problem?

I have seen this before where the mtab files gets out of sync with what is actually mounted. /proc/mounts will not lie to you. mtab might.

Unfortunately the df command uses the mtab file to sort out the mounted filesystems.

Sorry to say this but a reboot would fix it.

I have also seen forum entries where people link /etc/mtab to /proc/mounts but I strongly discourage such practice.