Groups > linux.debian.user > #202675

Re: Mounting LVM logical volumes in break=premount

From	Pascal Hambourg <pascal@plouf.fr.eu.org>
Newsgroups	linux.debian.user
Subject	Re: Mounting LVM logical volumes in break=premount
Date	2018-11-21 23:20 +0100
Message-ID	<wWJ0J-3Fo-1@gated-at.bofh.it> (permalink)
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Le 21/11/2018 à 22:09, Sophie Loewenthal a écrit :
> 
>>> 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.

AFAIK mount does not look up fstab when both the device and the mount 
point are specified. The initramfs uses a different mount command (from 
klibc-utils) from the regular mount (from util-linux). Util-linux mount 
auto-detects the filesystem type when missing, klibc-utils mount does not.

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Mounting LVM logical volumes in break=premount Sophie Loewenthal <sophie@klunky.co.uk> - 2018-11-21 09:50 +0100
  Re: Mounting LVM logical volumes in break=premount Pascal Hambourg <pascal@plouf.fr.eu.org> - 2018-11-21 20:40 +0100
    Re: Mounting LVM logical volumes in break=premount Sophie Loewenthal <sophie@klunky.co.uk> - 2018-11-21 22:20 +0100
      Re: Mounting LVM logical volumes in break=premount Pascal Hambourg <pascal@plouf.fr.eu.org> - 2018-11-21 23:20 +0100

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