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Old 11-23-2009, 04:47 PM   #1
AndyD236
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LVM issue


Hi,

I created a logical volume and can see it when i run lvdisplay. However, when I try to mount it, I get the following error message:

root@xxxxxxx:/etc# mount -a
mount: wrong fs type, bad option, bad superblock on /dev/mapper/VolGroup00-sysbak,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail or so

Command to mount in fstab: /dev/VolGroup00/sysbak /sysbak ext3 rw,noatime 0 0
~

Any ideas?
 
Old 11-23-2009, 05:23 PM   #2
MensaWater
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After creating the LV you have to layout a filesystem on it. LV is just creating the device (similar to a disk partition).

Your entry shows you're trying to do ext3 filesystem so to layout an ext3 you'd run:
mkfs -t ext3 /dev/mapper/VolGroup00-sysbak

After than you can try your mount command.

Adding the file to /etc/fstab doesn't do the layout - it is just a way to insure the filesystem mounts automatically at boot but it assumes you've done the layout already.
 
Old 11-24-2009, 08:26 AM   #3
AndyD236
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....

Thanks.

This worked but I had to redo the entire LVM setup (not a big deal), because I inadvertently formatted the entire partition, not just the LV. Doh. Once I recreated the PV, VG and LV's and then formatted the LV's as ext4, everything worked.

Thanks much.
 
  


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