Re: Mounting LVM logical volumes in break=premount

[Sophie Loewenthal <sophie@klunky.co.uk>]

On November 21, 2018 8:33:25 PM CET, Pascal Hambourg <pascal@plouf.fr.eu.org> wrote:
>Le 21/11/2018 à 09:31, Sophie Loewenthal a écrit :
>> 
>> I could not mount some LVM ext4 filesystems on a server earlier this
>week and was trying to work out what I had to do to make it work.
>> 
>> I had booted into break=premount ( added to the end of the linux line
>in Grub ) to fix an error in /etc/fstab that caused root from mounting
>> 
>> I could access volume groups via the LVM command:
>> %  lvm vgs
>> VG  #PV #LV #SN Attr   VSize    VFree
>> vg0 1   4   0 wz--n-  <99.50g  <28.11g
>> vg1 1   1   0 wz--n- <500.00g 1020.00m
>> 
>> but when I ran ,
>> % mount /dev/mapper/vg0-root /tmp/a
>> I recall a message stating the fs count not be mounted because of
>wrong file system type.
>
>1) Make sure the LV is activated, e.g. with vgchange -ay
>2) The mount command in the initramfs may require to specify the 
>filesystem type explicitly with -t.

Hi Pascal,
Thanks. I must have been alseep and missed the -t ext4 . makes sence hevause there is no fstab available for it to look up the fs type.

I know the vg was activated.

Thanks.