Re: Mounting LVM logical volumes in break=premount
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.
Re: Mounting LVM logical volumes in break=premount
On November 21, 2018 8:33:25 PM CET, Pascal Hambourg 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 VSizeVFree >> 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.
Re: Mounting LVM logical volumes in break=premount
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 VSizeVFree 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.
Mounting LVM logical volumes in break=premount
Hi, 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 VSizeVFree 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. Did I miss a module that had to be loaded for this to work, or is premount the wrong place to try this? ( In the end I rolled back to a snapshot that worked, but I should know for the future. ) Regards, S Sent from phone, thus brief
