Bug#884681: os-prober invoked during kernel upgrade disrupts KVM guest

Package: os-prober
Version: 1.65+deb8u1

uname: Linux black 3.16.0-4-amd64 #1 SMP Debian 3.16.51-2 (2017-12-03) x86_64 GNU/Linux
Short: os-prober invoked during kernel upgrade disrupts KVM guest

It happened already twice but this is first time I was able to bind together 2 events from KVM host and KVM guests.
During apt upgrade of kernel :

# cat /var/log/apt/history.log
...
Start-Date: 2017-12-18 08:59:24
Commandline: apt upgrade
Upgrade: linux-image-3.16.0-4-amd64:amd64 (3.16.51-2, 3.16.51-3), rsync:amd64 (3.1.1-3, 3.1.1-3+deb8u1), linux-libc-dev:amd64 (3.16.51-2, 3.16.51-3)
End-Date: 2017-12-18 09:01:07

my KVM guest logged (dmesg -T)

[pon gru 18 09:00:57 2017] blk_update_request: I/O error, dev vda, sector 17723248
[pon gru 18 09:00:57 2017] EXT4-fs warning (device dm-0): ext4_end_bio:330: I/O error -5 writing to inode 2037 (offset 0 size 0 starting block 2089966)
[pon gru 18 09:00:57 2017] Buffer I/O error on device dm-0, logical block 2089966
[pon gru 18 09:00:57 2017] Buffer I/O error on device dm-0, logical block 2089967
[pon gru 18 09:00:57 2017] blk_update_request: I/O error, dev vda, sector 13474112
[pon gru 18 09:00:57 2017] EXT4-fs warning (device dm-0): ext4_end_bio:330: I/O error -5 writing to inode 258195 (offset 0 size 0 starting block 1558824)
[pon gru 18 09:00:57 2017] Buffer I/O error on device dm-0, logical block 1558824
[pon gru 18 09:00:57 2017] Buffer I/O error on device dm-0, logical block 1558825
[pon gru 18 09:00:57 2017] Buffer I/O error on device dm-0, logical block 1558826
[pon gru 18 09:00:57 2017] Buffer I/O error on device dm-0, logical block 1558827

Guest file systems remounted RO so I do not have more logs - I got this from console

My disk setup is

(host)# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 931,5G 0 disk
├─sda1 8:1 0 487M 0 part
├─sda2 8:2 0 488M 0 part
│ └─md0 9:0 0 487,7M 0 raid1 /boot
└─sda3 8:3 0 930,6G 0 part
└─md1 9:1 0 930,4G 0 raid1
├─vgMain-root 253:0 0 5,6G 0 lvm /
├─vgMain-swap 253:1 0 3,7G 0 lvm [SWAP]
├─vgMain-usr 253:2 0 3,7G 0 lvm /usr
├─vgMain-var 253:3 0 7,5G 0 lvm /var
├─vgMain-home 253:4 0 7,5G 0 lvm /home
├─vgMain-tmp 253:5 0 3,7G 0 lvm /tmp
├─vgMain-ct01 253:6 0 14G 0 lvm
├─vgMain-ct02--mail 253:7 0 200G 0 lvm
├─vgMain-ct01--system 253:8 0 14G 0 lvm
└─vgMain-ct03--mailapi 253:9 0 26G 0 lvm
sdb 8:16 0 931,5G 0 disk
├─sdb1 8:17 0 487M 0 part /boot/efi
├─sdb2 8:18 0 488M 0 part
│ └─md0 9:0 0 487,7M 0 raid1 /boot
└─sdb3 8:19 0 930,6G 0 part
└─md1 9:1 0 930,4G 0 raid1
├─vgMain-root 253:0 0 5,6G 0 lvm /
├─vgMain-swap 253:1 0 3,7G 0 lvm [SWAP]
├─vgMain-usr 253:2 0 3,7G 0 lvm /usr
├─vgMain-var 253:3 0 7,5G 0 lvm /var
├─vgMain-home 253:4 0 7,5G 0 lvm /home
├─vgMain-tmp 253:5 0 3,7G 0 lvm /tmp
├─vgMain-ct01 253:6 0 14G 0 lvm
├─vgMain-ct02--mail 253:7 0 200G 0 lvm
├─vgMain-ct01--system 253:8 0 14G 0 lvm
└─vgMain-ct03--mailapi 253:9 0 26G 0 lvm
sr0 11:0 1 1024M 0 rom

LVM logical volumes named vgMain-ct* are passed to KVM guests, ie.:
(host)# dumpxml ct03-mailapi:
...
<devices>
<emulator>/usr/bin/kvm</emulator>
<disk type='block' device='disk'>
<driver name='qemu' type='raw' cache='none' io='native'/>
<source dev='/dev/mapper/vgMain-ct03--mailapi'/>
<backingStore/>
<target dev='vda' bus='virtio'/>
<alias name='virtio-disk0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
</disk>

(guest ct03-mailapi)# fdisk -l /dev/vda

Disk /dev/vda: 26 GiB, 27917287424 bytes, 54525952 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x16892faa

Device Boot Start End Sectors Size Id Type
/dev/vda1 2048 54525951 54523904 26G 8e Linux LVM

As I mentioned guest remounts RO, some programs from guest fail, etc..
After first such a situation one of my guest did not started properly and I had to force fsck and and reinstall grub on vda

(host)# ls -l /dev/ |grep dm-
brw-rw---- 1 root disk 253, 0 gru 14 07:12 dm-0
brw-rw---- 1 root disk 253, 1 gru 14 07:12 dm-1
brw-rw---- 1 root disk 253, 2 gru 14 07:12 dm-2
brw-rw---- 1 root disk 253, 3 gru 14 07:12 dm-3
brw-rw---- 1 root disk 253, 4 gru 14 07:12 dm-4
brw-rw---- 1 root disk 253, 5 gru 14 07:12 dm-5
brw-rw---- 1 libvirt-qemu libvirt-qemu 253, 6 gru 18 10:52 dm-6
brw-rw---- 1 libvirt-qemu libvirt-qemu 253, 7 gru 18 10:53 dm-7
brw-rw---- 1 libvirt-qemu libvirt-qemu 253, 8 gru 18 10:53 dm-8
brw-rw---- 1 libvirt-qemu libvirt-qemu 253, 9 gru 18 10:53 dm-9

Logs from host (dmest -T)
Dec 18 09:00:54 black kernel: [352010.437817] SGI XFS with ACLs, security attributes, realtime, large block/inode numbers, no debug enabled
Dec 18 09:00:54 black kernel: [352010.439692] JFS: nTxBlock = 8192, nTxLock = 65536
Dec 18 09:00:54 black kernel: [352010.442955] ntfs: driver 2.1.30 [Flags: R/W MODULE].
Dec 18 09:00:54 black kernel: [352010.445996] QNX4 filesystem 0.2.3 registered.
Dec 18 09:00:54 black os-prober: debug: running /usr/lib/os-probes/50mounted-tests on /dev/sda1
Dec 18 09:00:55 black 50mounted-tests: debug: mounted using GRUB fat filesystem driver
Dec 18 09:00:55 black 50mounted-tests: debug: running subtest /usr/lib/os-probes/mounted/05efi
Dec 18 09:00:55 black 05efi: debug: /dev/sda1 is a FAT partition (mounted by GRUB)
Dec 18 09:00:55 black 05efi: debug: /dev/sda1 partition scheme is gpt
Dec 18 09:00:55 black 05efi: debug: /dev/sda1 partition type is c12a7328-f81f-11d2-ba4b-00a0c93ec93b
Dec 18 09:00:55 black 05efi: debug: running subtest /usr/lib/os-probes/mounted/efi/10elilo
Dec 18 09:00:55 black 05efi: debug: running subtest /usr/lib/os-probes/mounted/efi/20microsoft
Dec 18 09:00:55 black 50mounted-tests: debug: running subtest /usr/lib/os-probes/mounted/10freedos
Dec 18 09:00:55 black 10freedos: debug: /dev/sda1 is a FAT partition (mounted by GRUB)
Dec 18 09:00:55 black 50mounted-tests: debug: running subtest /usr/lib/os-probes/mounted/10qnx
Dec 18 09:00:55 black 10qnx: debug: /dev/sda1 is not a QNX4 partition: exiting
Dec 18 09:00:55 black 50mounted-tests: debug: running subtest /usr/lib/os-probes/mounted/20macosx
Dec 18 09:00:55 black macosx-prober: debug: /dev/sda1 is not an HFS+ partition: exiting
Dec 18 09:00:55 black 50mounted-tests: debug: running subtest /usr/lib/os-probes/mounted/20microsoft
Dec 18 09:00:55 black 20microsoft: debug: Skipping legacy bootloaders on UEFI system
Dec 18 09:00:55 black 50mounted-tests: debug: running subtest /usr/lib/os-probes/mounted/30utility
Dec 18 09:00:55 black 30utility: debug: /dev/sda1 is a FAT partition (mounted by GRUB)
Dec 18 09:00:55 black 50mounted-tests: debug: running subtest /usr/lib/os-probes/mounted/40lsb
Dec 18 09:00:55 black 50mounted-tests: debug: running subtest /usr/lib/os-probes/mounted/70hurd
Dec 18 09:00:55 black 50mounted-tests: debug: running subtest /usr/lib/os-probes/mounted/80minix
Dec 18 09:00:55 black 50mounted-tests: debug: running subtest /usr/lib/os-probes/mounted/83haiku
Dec 18 09:00:55 black 83haiku: debug: /dev/sda1 is not a BeFS partition: exiting
Dec 18 09:00:55 black 50mounted-tests: debug: running subtest /usr/lib/os-probes/mounted/90linux-distro
Dec 18 09:00:55 black 50mounted-tests: debug: running subtest /usr/lib/os-probes/mounted/90solaris
Dec 18 09:00:56 black 50mounted-tests: debug: running subtest /usr/lib/os-probes/mounted/efi
Dec 18 09:00:56 black os-prober: debug: /dev/sda2: part of software raid array
Dec 18 09:00:56 black os-prober: debug: /dev/sda3: part of software raid array
Dec 18 09:00:56 black os-prober: debug: running /usr/lib/os-probes/mounted/05efi on mounted /dev/sdb1
Dec 18 09:00:56 black 05efi: debug: /dev/sdb1 is a FAT32 partition
Dec 18 09:00:56 black 05efi: debug: /dev/sdb1 partition scheme is gpt
Dec 18 09:00:56 black 05efi: debug: /dev/sdb1 partition type is c12a7328-f81f-11d2-ba4b-00a0c93ec93b
Dec 18 09:00:56 black 05efi: debug: running subtest /usr/lib/os-probes/mounted/efi/10elilo
Dec 18 09:00:56 black 05efi: debug: running subtest /usr/lib/os-probes/mounted/efi/20microsoft
Dec 18 09:00:56 black os-prober: debug: running /usr/lib/os-probes/mounted/10freedos on mounted /dev/sdb1
Dec 18 09:00:56 black 10freedos: debug: /dev/sdb1 is a FAT32 partition
Dec 18 09:00:56 black os-prober: debug: running /usr/lib/os-probes/mounted/10qnx on mounted /dev/sdb1
Dec 18 09:00:56 black 10qnx: debug: /dev/sdb1 is not a QNX4 partition: exiting
Dec 18 09:00:56 black os-prober: debug: running /usr/lib/os-probes/mounted/20macosx on mounted /dev/sdb1
Dec 18 09:00:56 black macosx-prober: debug: /dev/sdb1 is not an HFS+ partition: exiting
Dec 18 09:00:56 black os-prober: debug: running /usr/lib/os-probes/mounted/20microsoft on mounted /dev/sdb1
Dec 18 09:00:56 black 20microsoft: debug: Skipping legacy bootloaders on UEFI system
Dec 18 09:00:56 black os-prober: debug: running /usr/lib/os-probes/mounted/30utility on mounted /dev/sdb1
Dec 18 09:00:56 black 30utility: debug: /dev/sdb1 is a FAT32 partition
Dec 18 09:00:56 black os-prober: debug: running /usr/lib/os-probes/mounted/40lsb on mounted /dev/sdb1
Dec 18 09:00:56 black os-prober: debug: running /usr/lib/os-probes/mounted/70hurd on mounted /dev/sdb1
Dec 18 09:00:56 black os-prober: debug: running /usr/lib/os-probes/mounted/80minix on mounted /dev/sdb1
Dec 18 09:00:56 black os-prober: debug: running /usr/lib/os-probes/mounted/83haiku on mounted /dev/sdb1
Dec 18 09:00:56 black 83haiku: debug: /dev/sdb1 is not a BeFS partition: exiting
Dec 18 09:00:56 black os-prober: debug: running /usr/lib/os-probes/mounted/90linux-distro on mounted /dev/sdb1
Dec 18 09:00:56 black os-prober: debug: running /usr/lib/os-probes/mounted/90solaris on mounted /dev/sdb1
Dec 18 09:00:56 black os-prober: debug: /dev/sdb2: part of software raid array
Dec 18 09:00:56 black os-prober: debug: /dev/sdb3: part of software raid array
Dec 18 09:00:56 black os-prober: debug: running /usr/lib/os-probes/50mounted-tests on /dev/mapper/vgMain-ct01
Dec 18 09:00:56 black kernel: [352012.720435] FAT-fs (dm-6): utf8 is not a recommended IO charset for FAT filesystems, filesystem will be case sensitive!
Dec 18 09:00:56 black kernel: [352012.745087] FAT-fs (dm-6): Can't find a valid FAT filesystem
Dec 18 09:00:56 black kernel: [352012.758656] XFS (dm-6): Invalid superblock magic number
Dec 18 09:00:57 black kernel: [352012.826043] FAT-fs (dm-6): utf8 is not a recommended IO charset for FAT filesystems, filesystem will be case sensitive!
Dec 18 09:00:57 black kernel: [352012.863316] FAT-fs (dm-6): Can't find a valid FAT filesystem
Dec 18 09:00:57 black kernel: [352012.907895] VFS: Can't find a Minix filesystem V1 | V2 | V3 on device dm-6.
Dec 18 09:00:57 black kernel: [352012.962895] hfsplus: unable to find HFS+ superblock
Dec 18 09:00:57 black kernel: [352012.984583] You didn't specify the type of your ufs filesystem
Dec 18 09:00:57 black kernel: [352012.984583]
Dec 18 09:00:57 black kernel: [352012.984583] mount -t ufs -o ufstype=sun|sunx86|44bsd|ufs2|5xbsd|old|hp|nextstep|nextstep-cd|openstep ...
Dec 18 09:00:57 black kernel: [352012.984583]
Dec 18 09:00:57 black kernel: [352012.984583] >>>WARNING<<< Wrong ufstype may corrupt your filesystem, default is ufstype=old
Dec 18 09:00:57 black kernel: [352012.986510] ufs_read_super: bad magic number
Dec 18 09:00:57 black kernel: [352013.036714] hfs: can't find a HFS filesystem on dev dm-6
Dec 18 09:00:57 black os-prober: debug: running /usr/lib/os-probes/50mounted-tests on /dev/mapper/vgMain-ct01--system
Dec 18 09:00:57 black kernel: [352013.464504] FAT-fs (dm-8): utf8 is not a recommended IO charset for FAT filesystems, filesystem will be case sensitive!
Dec 18 09:00:57 black kernel: [352013.503696] FAT-fs (dm-8): Can't find a valid FAT filesystem
Dec 18 09:00:57 black kernel: [352013.505146] XFS (dm-8): Invalid superblock magic number
Dec 18 09:00:57 black kernel: [352013.544078] FAT-fs (dm-8): utf8 is not a recommended IO charset for FAT filesystems, filesystem will be case sensitive!
Dec 18 09:00:57 black kernel: [352013.550745] FAT-fs (dm-8): Can't find a valid FAT filesystem
Dec 18 09:00:57 black kernel: [352013.553887] VFS: Can't find a Minix filesystem V1 | V2 | V3 on device dm-8.
Dec 18 09:00:57 black kernel: [352013.554936] hfsplus: unable to find HFS+ superblock
Dec 18 09:00:57 black kernel: [352013.556615] You didn't specify the type of your ufs filesystem
Dec 18 09:00:57 black kernel: [352013.556615]
Dec 18 09:00:57 black kernel: [352013.556615] mount -t ufs -o ufstype=sun|sunx86|44bsd|ufs2|5xbsd|old|hp|nextstep|nextstep-cd|openstep ...
Dec 18 09:00:57 black kernel: [352013.556615]
Dec 18 09:00:57 black kernel: [352013.556615] >>>WARNING<<< Wrong ufstype may corrupt your filesystem, default is ufstype=old
Dec 18 09:00:57 black kernel: [352013.556835] ufs_read_super: bad magic number
Dec 18 09:00:57 black kernel: [352013.558244] hfs: can't find a HFS filesystem on dev dm-8
Dec 18 09:00:57 black os-prober: debug: running /usr/lib/os-probes/50mounted-tests on /dev/mapper/vgMain-ct02--mail
Dec 18 09:00:58 black kernel: [352014.375151] FAT-fs (dm-7): utf8 is not a recommended IO charset for FAT filesystems, filesystem will be case sensitive!
Dec 18 09:00:58 black kernel: [352014.375536] FAT-fs (dm-7): Can't find a valid FAT filesystem
Dec 18 09:00:58 black kernel: [352014.377314] XFS (dm-7): Invalid superblock magic number
Dec 18 09:00:58 black kernel: [352014.476406] FAT-fs (dm-7): utf8 is not a recommended IO charset for FAT filesystems, filesystem will be case sensitive!
Dec 18 09:00:58 black kernel: [352014.483721] FAT-fs (dm-7): Can't find a valid FAT filesystem
Dec 18 09:00:58 black kernel: [352014.487022] VFS: Can't find a Minix filesystem V1 | V2 | V3 on device dm-7.
Dec 18 09:00:58 black kernel: [352014.487824] hfsplus: unable to find HFS+ superblock
Dec 18 09:00:58 black kernel: [352014.489495] You didn't specify the type of your ufs filesystem
Dec 18 09:00:58 black kernel: [352014.489495]
Dec 18 09:00:58 black kernel: [352014.489495] mount -t ufs -o ufstype=sun|sunx86|44bsd|ufs2|5xbsd|old|hp|nextstep|nextstep-cd|openstep ...
Dec 18 09:00:58 black kernel: [352014.489495]
Dec 18 09:00:58 black kernel: [352014.489495] >>>WARNING<<< Wrong ufstype may corrupt your filesystem, default is ufstype=old
Dec 18 09:00:58 black kernel: [352014.489590] ufs_read_super: bad magic number
Dec 18 09:00:58 black kernel: [352014.490488] hfs: can't find a HFS filesystem on dev dm-7
Dec 18 09:00:58 black os-prober: debug: running /usr/lib/os-probes/50mounted-tests on /dev/mapper/vgMain-ct03--mailapi
Dec 18 09:00:59 black kernel: [352015.049310] FAT-fs (dm-9): utf8 is not a recommended IO charset for FAT filesystems, filesystem will be case sensitive!
Dec 18 09:00:59 black kernel: [352015.106111] FAT-fs (dm-9): Can't find a valid FAT filesystem
Dec 18 09:00:59 black kernel: [352015.181352] XFS (dm-9): Invalid superblock magic number
Dec 18 09:00:59 black kernel: [352015.231131] FAT-fs (dm-9): utf8 is not a recommended IO charset for FAT filesystems, filesystem will be case sensitive!
Dec 18 09:00:59 black kernel: [352015.231624] FAT-fs (dm-9): Can't find a valid FAT filesystem
Dec 18 09:00:59 black kernel: [352015.369932] VFS: Can't find a Minix filesystem V1 | V2 | V3 on device dm-9.
Dec 18 09:00:59 black kernel: [352015.371300] hfsplus: unable to find HFS+ superblock
Dec 18 09:00:59 black kernel: [352015.373075] You didn't specify the type of your ufs filesystem
Dec 18 09:00:59 black kernel: [352015.373075]
Dec 18 09:00:59 black kernel: [352015.373075] mount -t ufs -o ufstype=sun|sunx86|44bsd|ufs2|5xbsd|old|hp|nextstep|nextstep-cd|openstep ...
Dec 18 09:00:59 black kernel: [352015.373075]
Dec 18 09:00:59 black kernel: [352015.373075] >>>WARNING<<< Wrong ufstype may corrupt your filesystem, default is ufstype=old
Dec 18 09:00:59 black kernel: [352015.373856] ufs_read_super: bad magic number
Dec 18 09:00:59 black kernel: [352015.374973] hfs: can't find a HFS filesystem on dev dm-9
Dec 18 09:00:59 black os-prober: debug: running /usr/lib/os-probes/mounted/05efi on mounted /dev/mapper/vgMain-home
Dec 18 09:00:59 black 05efi: debug: /dev/mapper/vgMain-home is ext4 partition: exiting
Dec 18 09:00:59 black os-prober: debug: running /usr/lib/os-probes/mounted/10freedos on mounted /dev/mapper/vgMain-home
Dec 18 09:00:59 black 10freedos: debug: /dev/mapper/vgMain-home is not a FAT partition: exiting
Dec 18 09:00:59 black os-prober: debug: running /usr/lib/os-probes/mounted/10qnx on mounted /dev/mapper/vgMain-home
Dec 18 09:00:59 black 10qnx: debug: /dev/mapper/vgMain-home is not a QNX4 partition: exiting
Dec 18 09:00:59 black os-prober: debug: running /usr/lib/os-probes/mounted/20macosx on mounted /dev/mapper/vgMain-home
Dec 18 09:00:59 black macosx-prober: debug: /dev/mapper/vgMain-home is not an HFS+ partition: exiting
Dec 18 09:00:59 black os-prober: debug: running /usr/lib/os-probes/mounted/20microsoft on mounted /dev/mapper/vgMain-home
Dec 18 09:00:59 black 20microsoft: debug: Skipping legacy bootloaders on UEFI system
Dec 18 09:00:59 black os-prober: debug: running /usr/lib/os-probes/mounted/30utility on mounted /dev/mapper/vgMain-home
Dec 18 09:00:59 black 30utility: debug: /dev/mapper/vgMain-home is not a FAT partition: exiting
Dec 18 09:00:59 black os-prober: debug: running /usr/lib/os-probes/mounted/40lsb on mounted /dev/mapper/vgMain-home
Dec 18 09:00:59 black os-prober: debug: running /usr/lib/os-probes/mounted/70hurd on mounted /dev/mapper/vgMain-home
Dec 18 09:00:59 black os-prober: debug: running /usr/lib/os-probes/mounted/80minix on mounted /dev/mapper/vgMain-home
Dec 18 09:00:59 black os-prober: debug: running /usr/lib/os-probes/mounted/83haiku on mounted /dev/mapper/vgMain-home
Dec 18 09:00:59 black 83haiku: debug: /dev/mapper/vgMain-home is not a BeFS partition: exiting
Dec 18 09:00:59 black os-prober: debug: running /usr/lib/os-probes/mounted/90linux-distro on mounted /dev/mapper/vgMain-home
Dec 18 09:00:59 black os-prober: debug: running /usr/lib/os-probes/mounted/90solaris on mounted /dev/mapper/vgMain-home
Dec 18 09:00:59 black os-prober: debug: /dev/mapper/vgMain-swap: is active swap
Dec 18 09:00:59 black os-prober: debug: running /usr/lib/os-probes/mounted/05efi on mounted /dev/mapper/vgMain-tmp
Dec 18 09:00:59 black 05efi: debug: /dev/mapper/vgMain-tmp is ext4 partition: exiting
Dec 18 09:00:59 black os-prober: debug: running /usr/lib/os-probes/mounted/10freedos on mounted /dev/mapper/vgMain-tmp
Dec 18 09:00:59 black 10freedos: debug: /dev/mapper/vgMain-tmp is not a FAT partition: exiting
Dec 18 09:00:59 black os-prober: debug: running /usr/lib/os-probes/mounted/10qnx on mounted /dev/mapper/vgMain-tmp
Dec 18 09:00:59 black 10qnx: debug: /dev/mapper/vgMain-tmp is not a QNX4 partition: exiting
Dec 18 09:00:59 black os-prober: debug: running /usr/lib/os-probes/mounted/20macosx on mounted /dev/mapper/vgMain-tmp
Dec 18 09:00:59 black macosx-prober: debug: /dev/mapper/vgMain-tmp is not an HFS+ partition: exiting
Dec 18 09:00:59 black os-prober: debug: running /usr/lib/os-probes/mounted/10freedos on mounted /dev/mapper/vgMain-tmp
Dec 18 09:00:59 black 10freedos: debug: /dev/mapper/vgMain-tmp is not a FAT partition: exiting
Dec 18 09:00:59 black os-prober: debug: running /usr/lib/os-probes/mounted/10qnx on mounted /dev/mapper/vgMain-tmp
Dec 18 09:00:59 black 10qnx: debug: /dev/mapper/vgMain-tmp is not a QNX4 partition: exiting
Dec 18 09:00:59 black os-prober: debug: running /usr/lib/os-probes/mounted/20macosx on mounted /dev/mapper/vgMain-tmp
Dec 18 09:00:59 black macosx-prober: debug: /dev/mapper/vgMain-tmp is not an HFS+ partition: exiting
Dec 18 09:00:59 black os-prober: debug: running /usr/lib/os-probes/mounted/20microsoft on mounted /dev/mapper/vgMain-tmp
Dec 18 09:00:59 black 20microsoft: debug: Skipping legacy bootloaders on UEFI system
Dec 18 09:00:59 black os-prober: debug: running /usr/lib/os-probes/mounted/30utility on mounted /dev/mapper/vgMain-tmp
Dec 18 09:00:59 black 30utility: debug: /dev/mapper/vgMain-tmp is not a FAT partition: exiting
Dec 18 09:00:59 black os-prober: debug: running /usr/lib/os-probes/mounted/40lsb on mounted /dev/mapper/vgMain-tmp
Dec 18 09:00:59 black os-prober: debug: running /usr/lib/os-probes/mounted/70hurd on mounted /dev/mapper/vgMain-tmp
Dec 18 09:00:59 black os-prober: debug: running /usr/lib/os-probes/mounted/80minix on mounted /dev/mapper/vgMain-tmp
Dec 18 09:00:59 black os-prober: debug: running /usr/lib/os-probes/mounted/83haiku on mounted /dev/mapper/vgMain-tmp
Dec 18 09:00:59 black 83haiku: debug: /dev/mapper/vgMain-tmp is not a BeFS partition: exiting
Dec 18 09:00:59 black os-prober: debug: running /usr/lib/os-probes/mounted/90linux-distro on mounted /dev/mapper/vgMain-tmp
Dec 18 09:00:59 black os-prober: debug: running /usr/lib/os-probes/mounted/90solaris on mounted /dev/mapper/vgMain-tmp
Dec 18 09:00:59 black os-prober: debug: running /usr/lib/os-probes/mounted/05efi on mounted /dev/mapper/vgMain-usr
Dec 18 09:00:59 black 05efi: debug: /dev/mapper/vgMain-usr is ext4 partition: exiting
Dec 18 09:00:59 black os-prober: debug: running /usr/lib/os-probes/mounted/10freedos on mounted /dev/mapper/vgMain-usr
Dec 18 09:00:59 black 10freedos: debug: /dev/mapper/vgMain-usr is not a FAT partition: exiting
Dec 18 09:00:59 black os-prober: debug: running /usr/lib/os-probes/mounted/10qnx on mounted /dev/mapper/vgMain-usr
Dec 18 09:00:59 black 10qnx: debug: /dev/mapper/vgMain-usr is not a QNX4 partition: exiting
Dec 18 09:00:59 black os-prober: debug: running /usr/lib/os-probes/mounted/20macosx on mounted /dev/mapper/vgMain-usr
Dec 18 09:00:59 black macosx-prober: debug: /dev/mapper/vgMain-usr is not an HFS+ partition: exiting
Dec 18 09:00:59 black os-prober: debug: running /usr/lib/os-probes/mounted/20microsoft on mounted /dev/mapper/vgMain-usr
Dec 18 09:00:59 black 20microsoft: debug: Skipping legacy bootloaders on UEFI system
Dec 18 09:00:59 black os-prober: debug: running /usr/lib/os-probes/mounted/30utility on mounted /dev/mapper/vgMain-usr
Dec 18 09:00:59 black 30utility: debug: /dev/mapper/vgMain-usr is not a FAT partition: exiting
Dec 18 09:00:59 black os-prober: debug: running /usr/lib/os-probes/mounted/40lsb on mounted /dev/mapper/vgMain-usr
Dec 18 09:00:59 black os-prober: debug: running /usr/lib/os-probes/mounted/70hurd on mounted /dev/mapper/vgMain-usr
Dec 18 09:00:59 black os-prober: debug: running /usr/lib/os-probes/mounted/80minix on mounted /dev/mapper/vgMain-usr
Dec 18 09:00:59 black os-prober: debug: running /usr/lib/os-probes/mounted/83haiku on mounted /dev/mapper/vgMain-usr
Dec 18 09:00:59 black 83haiku: debug: /dev/mapper/vgMain-usr is not a BeFS partition: exiting
Dec 18 09:00:59 black os-prober: debug: running /usr/lib/os-probes/mounted/90linux-distro on mounted /dev/mapper/vgMain-usr
Dec 18 09:00:59 black os-prober: debug: running /usr/lib/os-probes/mounted/90solaris on mounted /dev/mapper/vgMain-usr
Dec 18 09:00:59 black os-prober: debug: running /usr/lib/os-probes/mounted/05efi on mounted /dev/mapper/vgMain-var
Dec 18 09:00:59 black 05efi: debug: /dev/mapper/vgMain-var is ext4 partition: exiting
Dec 18 09:00:59 black os-prober: debug: running /usr/lib/os-probes/mounted/10freedos on mounted /dev/mapper/vgMain-var
Dec 18 09:00:59 black 10freedos: debug: /dev/mapper/vgMain-var is not a FAT partition: exiting
Dec 18 09:00:59 black os-prober: debug: running /usr/lib/os-probes/mounted/10qnx on mounted /dev/mapper/vgMain-var
Dec 18 09:00:59 black 10qnx: debug: /dev/mapper/vgMain-var is not a QNX4 partition: exiting
Dec 18 09:00:59 black os-prober: debug: running /usr/lib/os-probes/mounted/20macosx on mounted /dev/mapper/vgMain-var
Dec 18 09:00:59 black macosx-prober: debug: /dev/mapper/vgMain-var is not an HFS+ partition: exiting
Dec 18 09:00:59 black os-prober: debug: running /usr/lib/os-probes/mounted/20microsoft on mounted /dev/mapper/vgMain-var
Dec 18 09:00:59 black 20microsoft: debug: Skipping legacy bootloaders on UEFI system
Dec 18 09:00:59 black os-prober: debug: running /usr/lib/os-probes/mounted/30utility on mounted /dev/mapper/vgMain-var
Dec 18 09:00:59 black 30utility: debug: /dev/mapper/vgMain-var is not a FAT partition: exiting
Dec 18 09:00:59 black os-prober: debug: running /usr/lib/os-probes/mounted/40lsb on mounted /dev/mapper/vgMain-var
Dec 18 09:00:59 black os-prober: debug: running /usr/lib/os-probes/mounted/70hurd on mounted /dev/mapper/vgMain-var
Dec 18 09:00:59 black os-prober: debug: running /usr/lib/os-probes/mounted/80minix on mounted /dev/mapper/vgMain-var
Dec 18 09:00:59 black os-prober: debug: running /usr/lib/os-probes/mounted/83haiku on mounted /dev/mapper/vgMain-var
Dec 18 09:00:59 black 83haiku: debug: /dev/mapper/vgMain-var is not a BeFS partition: exiting
Dec 18 09:00:59 black os-prober: debug: running /usr/lib/os-probes/mounted/90linux-distro on mounted /dev/mapper/vgMain-var
Dec 18 09:00:59 black os-prober: debug: running /usr/lib/os-probes/mounted/90solaris on mounted /dev/mapper/vgMain-var
...

So basically my setup with lvm on lvm on soft raid causes problems.

Is there any way to explicitly forbid os-prober from accessing problematic lvm volumes ?

--

Best regards
Jakub Juraszek.