CentOS - Sep 2005 - Disk problem has stopped 'df' from working

Hi folks, probably not CentOS specific but any help appreciated:

One of our CentOS4 servers crashed and when checked there was a disk problem
which turned out to be a faulty SATA cable on one of the RAID 1 drives. This
was sorted and the server brought back up after the usual disk checks and
all has been well for the last week. Today, however, I tried 'df -h' and
got:

Filesystem            Size  Used Avail Use% Mounted on
df: `': No such file or directory

I can't recall whether I tried the command just after the server was
restarted (ie: whether this is a new problem) but any pointers towards
possible causes/fixes would be appreciated.

Thanks

Hi folks, I actually managed to find a message in an old forum somewhere
about a corrupt /etc/mtab file and how to fix it: cat /proc/mounts >
/etc/mtab, but when I tried it I was informed that the filesystem was read
only. 

Further checks revealed lots of disk channel errors being logged so I guess
the hard disk may be on the way out after all. I'll be on site with a spare
tomorrow.

Nigel

-----Original Message-----
From: centos-bounces at centos.org [mailto:centos-bounces at centos.org] On
Behalf
Of Nigel kendrick
Sent: 15 September 2005 11:55
To: 'CentOS mailing list'
Subject: [CentOS] Disk problem has stopped 'df' from working


Hi folks, probably not CentOS specific but any help appreciated:

One of our CentOS4 servers crashed and when checked there was a disk problem
which turned out to be a faulty SATA cable on one of the RAID 1 drives. This
was sorted and the server brought back up after the usual disk checks and
all has been well for the last week. Today, however, I tried 'df -h' and
got:

Filesystem            Size  Used Avail Use% Mounted on
df: `': No such file or directory

I can't recall whether I tried the command just after the server was
restarted (ie: whether this is a new problem) but any pointers towards
possible causes/fixes would be appreciated.

Thanks

_______________________________________________
CentOS mailing list
CentOS at centos.org http://lists.centos.org/mailman/listinfo/centos

On 15/09/05, Nigel kendrick <support-lists at petdoctors.co.uk>
wrote:
> Hi folks, probably not CentOS specific but any help appreciated:
> 
> One of our CentOS4 servers crashed and when checked there was a disk
problem
> which turned out to be a faulty SATA cable on one of the RAID 1 drives.
This
> was sorted and the server brought back up after the usual disk checks and
> all has been well for the last week. Today, however, I tried 'df
-h' and
> got:
> 
> Filesystem            Size  Used Avail Use% Mounted on
> df: `': No such file or directory
Are there problems with any other commands like mount, lsof or du? Do
the contents of /etc/mtab match what mount is showing as mounted?

Is there anything in /var/log/messages ? Does "strace df -h" give any
indication where the problem lies? Are you sure it's /bin/df you're
running? Does the binary have the same size and md5sum as a working df
on another machine with the same version of the coreutils package?

Will.