Ok,

I've got a huge emergency here. I've got a Linux system that will not completely boot.

The power went off over the weekend and the system is now reporting an error:

"Checking filesystems:

fsck.ext3: No such file or directory while trying to open /dev/VolGroup01/LogVol01"

Now, I'm not a Linux god, so I'll need some help here...

Background:

It a plain FC6 install being used as a file server. It's got two physical drives, and the second drive is mounted as /home. It appears to be that second drive that is not mounting or something...

When the system starts in reports the following:

"sdb: assuming drive cash: write though
Reading all physifcal volumes. This may take awhile...
Found volume group "VolGroup01" using metadata type lvm2
Found volume group "VolGroup00" using metadata type lvm2
2 logical volume(s) in volume group "VolGroup00" now active"

I then get the error previously mentioned above...

Folks, I'm desparate, I can not afford to loose the data on that second hard drive... ...and I know, for certain, that the second hard drive is fine and operational.

fstab shows:

/dev/VolGroup00/LogVol00 / ext3 defaults 1 1
LABEL=/boot /boot ext3 defaults 1 2
devpts /dev/pts devpts gid=5,mode=620 0 0
tmpfs /dev/shm tmpfs defaults 0 0
proc /proc proc defaults 0 0
sysfs /sys sysfs defaults 0 0
/dev/VolGroup00/LogVol01 swap swap defaults 0 0
/dev/VolGroup01/LogVol01 /home ext3 defaults 1 2

Help!!!

Seriously... What is causing this behavior?? Move over, how to I get the system up and running properly again?!?

Gerhard

First of all, not as huge as it seems: this looks like an fstab problem and your system is probably fine -- it just won't boot -- meaning that your data is probably safe.

If YOu're getting that error, then the drive may just fail to appear to the system. Are you sure you have the modules loaded to mount that drive? What kind of drive is it (SATA, USB)?

Have you tried examining this under a LiveCD such as Knoppix? Do you have a rescue disk of some kind?

Joel

The answer is that I don't have a rescue disk of any sort... (other than a FC6 DVD)

Ok, now for the complete story:

I'm running this FC6 machine on an VMware ESX 3.0.1 server attached to a Fiber Channel SAN.

So, there is a separate 2TB SAN that has multiple LUNs. One of the LUNs is for ESX itself, and the other LUN is the second drive for this FC6 VM. So the /home mount is dedicated to this second LUN off the SAN.

As far as FC6 is concerned, it's got two SCSI hard drives. The first contains the / and the other is the /home.

I've no idea currently as to why it's not seeing the second drive.

I looks like FC6 does not actually see the second drive at this moment. As in it doesn't exist anymore...

VMware ESX shows it as there and given to the FC6 machine, but under FC6 the sdb seems to not be detected?!?!

Gerhard

Ok,

Both of the drives are LSI based SCSI drives, and if the device driver is loading for one... it's there for the other.

What is clear at this point is that the OS is seeing the drives, but for some reason is not seeing the file system on drive /dev/VolGroup01/LogVol01

What's really odd is that I've got no idea as to why this is the case.

fdisk -l shows the 800GB second drive

pvdisplay only shows the / volume

Thoughts?

Can you provide the output of fdisk -l? Also try running lvm vgscan. May as well post output of pvdisplay, vgdisplay, and lvdisplay

If you need to boot into rescue mode the installation CD will work, just pass the rescue option.