Ubuntu
lvm2 package

  1. Bug #1834250
  2. Comment #11

Comment 11 for bug 1834250

Revision history for this message
Mateusz Bysiek (mbdev) wrote :

I'm running 19.10 x64 (up to date as of today), LVM setup. Originally installed 19.04 and upgraded. This affects me too. Or, affected rather, because after following advice from comment #9 above it seems fixed. Details follow.

```
$ sudo update-grub2
Sourcing file `/etc/default/grub'
Sourcing file `/etc/default/grub.d/init-select.cfg'
Generating grub configuration file ...
  /dev/sda: open failed: No medium found
  /dev/sda: open failed: No medium found
  /dev/sda: open failed: No medium found
  /dev/sda: open failed: No medium found
  /dev/sda: open failed: No medium found
  /dev/sda: open failed: No medium found
  /dev/sda: open failed: No medium found
  /dev/sda: open failed: No medium found
  /dev/sda: open failed: No medium found
  /dev/sda: open failed: No medium found
Found linux image: /boot/vmlinuz-5.3.0-29-generic
Found initrd image: /boot/initrd.img-5.3.0-29-generic
Found linux image: /boot/vmlinuz-5.3.0-26-generic
Found initrd image: /boot/initrd.img-5.3.0-26-generic
  /dev/sda: open failed: No medium found
  /dev/sda: open failed: No medium found
  /dev/sda: open failed: No medium found
```

It goes on, but I'm skipping it.

```
$ lsblk
nvme0n1 259:0 0 931.5G 0 disk
├─nvme0n1p1 259:1 0 512M 0 part /boot/efi
├─nvme0n1p2 259:2 0 732M 0 part /boot
└─nvme0n1p3 259:3 0 930.3G 0 part
  └─nvme0n1p3_crypt 253:0 0 930.3G 0 crypt
    ├─ubuntu--vg-root 253:1 0 929.3G 0 lvm /
    └─ubuntu--vg-swap_1 253:2 0 976M 0 lvm [SWAP]
```

Above I'm skipping bunch of loop## from output of lsblk.

The Ubuntu "Disks" app identified the /dev/sda as "Generic- SD/MMC". It seems it's a built-in card reader of my ThinkPad. I decided to follow comment #9 above to filter out that device from LVM. And, advice from comment #9 fixed the issue! Thanks a lot Zer00Cool!

What I did exactly is:

1. grep for "global_filter" in lvm.conf - that file is really long...

```
$ grep -Fn "global_filter" /etc/lvm/lvm.conf
142: # Configuration option devices/global_filter.
146: # Use global_filter to hide devices from these LVM system components.
148: # global_filter are not opened by LVM.
150: # global_filter = [ "a|.*/|" ]
```

2. After the commented out "global_filter" setting (line 150 in my case), I added the following:

```
global_filter = [ "r|/dev/sda|" ]
```