[linux-lvm] You must specify a filesystem type error

[linux-lvm] You must specify a filesystem type error

[Kenny Gorman]

I am utilizing LVM snapshots, and every once in a while I get this 'you 
must specify the filesystem type' error when trying to mount the volume:

$> ./snapshot.sh -s
lvremove -- doing automatic backup of volume group "datagrp"
lvremove -- logical volume "/dev/datagrp/datasnap" successfully removed

lvcreate -- WARNING: the snapshot will be automatically disabled once it 
gets full
lvcreate -- INFO: using default snapshot chunk size of 64 KB for 
"/dev/datagrp/datasnap"
lvcreate -- doing automatic backup of "datagrp"
lvcreate -- logical volume "/dev/datagrp/datasnap" successfully created

mount: block device /dev/datagrp/datasnap is write-protected, mounting 
read-only
mount: you must specify the filesystem type


But it only happens once in a while.   How can I rid myself of this 
issue?  I am on SuSE Linux 7.2 (2.4.7-64GB-smp) with lvm 0.9.1 beta7.

Thanks,
Kenny Gorman
DBA

Re: [linux-lvm] You must specify a filesystem type error

[Wolfgang Weisselberg]

Hi, Kenny!

Kenny Gorman (kenny@kenamea.com) wrote 33 lines:

> I am utilizing LVM snapshots, and every once in a while I get this 'you 
> must specify the filesystem type' error when trying to mount the volume:

> mount: you must specify the filesystem type

Mount could not mount the FS.  

> But it only happens once in a while.

So it's probably not an journalled FS (which needs a
kernel-patch for online snapshots).  What does the system
log say?  (dmesg, /var/log/messages or whereever)

> How can I rid myself of this 
> issue?  I am on SuSE Linux 7.2 (2.4.7-64GB-smp) with lvm 0.9.1 beta7.

You may want to upgrade your Kernel and LVM-Tools to 1.0.1...
No guarantee that the snapshots will be any better, though.

-Wolfgang

Re: [linux-lvm] You must specify a filesystem type error

[Kenny Gorman]

See below:

Wolfgang Weisselberg wrote:

> Hi, Kenny!
> 
> Kenny Gorman (kenny@kenamea.com) wrote 33 lines:
> 
> 
>>I am utilizing LVM snapshots, and every once in a while I get this 'you 
>>must specify the filesystem type' error when trying to mount the volume:
>>
> 
>>mount: you must specify the filesystem type
>>
> 
> Mount could not mount the FS.  
> 
> 
>>But it only happens once in a while.
>>
> 
> So it's probably not an journalled FS (which needs a
> kernel-patch for online snapshots).  What does the system
> log say?  (dmesg, /var/log/messages or whereever)


It's ReiserFS so it's journaled. Only once in a while to I get the 
error.  Var log messages gives this error when I snapshot:

Dec 10 10:57:43 ino kernel: fatfs: bogus logical sector size 0
Dec 10 10:57:43 ino kernel: VFS: Can't find a valid MSDOS filesystem on 
dev 3a:01.
Dec 10 10:57:44 ino kernel: reiserfs: checking transaction log (device 
3a:01) ...
Dec 10 10:57:44 ino kernel: Using r5 hash to sort names
Dec 10 10:57:44 ino kernel: reiserfs: using 3.5.x disk format
Dec 10 10:57:44 ino kernel: ReiserFS version 3.6.25

funny thing tho, it works just fine most of the time.


> 
> 
>>How can I rid myself of this 
>>issue?  I am on SuSE Linux 7.2 (2.4.7-64GB-smp) with lvm 0.9.1 beta7.
>>
> 
> You may want to upgrade your Kernel and LVM-Tools to 1.0.1...
> No guarantee that the snapshots will be any better, though.


Yea, I should.  thx.