[Bug 1553181] Re: ISST-LTE: pVM: warning message showed in dmesg after update-grub

[Mathieu Trudel-Lapierre]

This is more likely os-prober trying to check any other partitions for
other bootable OSes on the system, and the messages in dmesg being
simply the resulting failures from trying to mount a partition with the
wrong filesystem.

This is purely cosmetic; I'm not sure whether it's worth spending more
time that has already been spent trying to better detect the filesystem
types (which will need some amounts of probing anyway), as opposed to
using a workaround on the system.

The probing for other OSes can be disabled by setting
GRUB_DISABLE_OS_PROBER=true in /etc/default/grub.

** Package changed: ubuntu => os-prober (Ubuntu)

** Changed in: os-prober (Ubuntu)
       Status: New => Triaged

** Changed in: os-prober (Ubuntu)
     Assignee: Taco Screen team (taco-screen-team) => Mathieu Trudel-Lapierre (mathieu-tl)

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Title:
  ISST-LTE: pVM: warning message showed in dmesg after update-grub

Status in os-prober package in Ubuntu:
  Triaged

Bug description:
  == Comment: #0 - Ping Tian Han - 2016-02-24 01:27:37 ==
  After run update-grub, there are some warning message showed in dmesg:

  % dmesg|tail -n 50
  [ 1368.420636] FAT-fs (sdj1): Can't find a valid FAT filesystem
  [ 1368.430463] XFS (sdj1): Invalid superblock magic number
  [ 1368.435139] FAT-fs (sdj1): bogus number of reserved sectors
  [ 1368.435153] FAT-fs (sdj1): Can't find a valid FAT filesystem
  [ 1368.441715] VFS: Can't find a Minix filesystem V1 | V2 | V3 on device sdj1.
  [ 1368.444377] hfsplus: unable to find HFS+ superblock
  [ 1368.446243] qnx4: no qnx4 filesystem (no root dir).
  [ 1368.447300] ufs: You didn't specify the type of your ufs filesystem
    
                 mount -t ufs -o ufstype=sun|sunx86|44bsd|ufs2|5xbsd|old|hp|nextstep|nextstep-cd|openstep ...
    
                 >>>WARNING<<< Wrong ufstype may corrupt your filesystem, default is ufstype=old
  [ 1368.448362] ufs: ufs_fill_super(): bad magic number
  [ 1368.450876] hfs: can't find a HFS filesystem on dev sdj1
  [ 1584.756560] EXT4-fs (sde1): VFS: Can't find ext4 filesystem
  [ 1584.757936] EXT4-fs (sde1): VFS: Can't find ext4 filesystem
  [ 1584.759326] EXT4-fs (sde1): VFS: Can't find ext4 filesystem
  [ 1584.760860] FAT-fs (sde1): bogus number of reserved sectors
  [ 1584.760864] FAT-fs (sde1): Can't find a valid FAT filesystem
  [ 1584.769420] XFS (sde1): Invalid superblock magic number
  [ 1584.772785] FAT-fs (sde1): bogus number of reserved sectors
  [ 1584.772805] FAT-fs (sde1): Can't find a valid FAT filesystem
  [ 1584.778630] VFS: Can't find a Minix filesystem V1 | V2 | V3 on device sde1.
  [ 1584.780595] hfsplus: unable to find HFS+ superblock
  [ 1584.782159] qnx4: no qnx4 filesystem (no root dir).
  [ 1584.783449] ufs: You didn't specify the type of your ufs filesystem

                 mount -t ufs -o
  ufstype=sun|sunx86|44bsd|ufs2|5xbsd|old|hp|nextstep|nextstep-
  cd|openstep ...

                 >>>WARNING<<< Wrong ufstype may corrupt your filesystem, default is ufstype=old
  [ 1584.784190] ufs: ufs_fill_super(): bad magic number
  [ 1584.786136] hfs: can't find a HFS filesystem on dev sde1
  [ 1587.351905] EXT4-fs (sdj1): VFS: Can't find ext4 filesystem
  [ 1587.353848] EXT4-fs (sdj1): VFS: Can't find ext4 filesystem
  [ 1587.356665] EXT4-fs (sdj1): VFS: Can't find ext4 filesystem
  [ 1587.358527] FAT-fs (sdj1): bogus number of reserved sectors
  [ 1587.358535] FAT-fs (sdj1): Can't find a valid FAT filesystem
  [ 1587.369653] XFS (sdj1): Invalid superblock magic number
  [ 1587.374185] FAT-fs (sdj1): bogus number of reserved sectors
  [ 1587.374207] FAT-fs (sdj1): Can't find a valid FAT filesystem
  [ 1587.380672] VFS: Can't find a Minix filesystem V1 | V2 | V3 on device sdj1.
  [ 1587.383023] hfsplus: unable to find HFS+ superblock
  [ 1587.384816] qnx4: no qnx4 filesystem (no root dir).
  [ 1587.385995] ufs: You didn't specify the type of your ufs filesystem

                 mount -t ufs -o
  ufstype=sun|sunx86|44bsd|ufs2|5xbsd|old|hp|nextstep|nextstep-
  cd|openstep ...

                 >>>WARNING<<< Wrong ufstype may corrupt your filesystem, default is ufstype=old
  [ 1587.387210] ufs: ufs_fill_super(): bad magic number
  [ 1587.389515] hfs: can't find a HFS filesystem on dev sdj1

  % sudo dpkg -l grub2-common
  Desired=Unknown/Install/Remove/Purge/Hold
  | Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
  |/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
  ||/ Name                                           Version                      Architecture                 Description
  +++-==============================================-============================-============================-=================================================================================================
  ii  grub2-common                                   2.02~beta2-36                ppc64el                      GRand Unified Bootloader (common files for version 2)

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