[bug #41380] grub2, mdadm 1.2 superblocks, gpt, lvm, grub2-probe, degraded array

[oblu123]

URL:
  <http://savannah.gnu.org/bugs/?41380>

                 Summary: grub2, mdadm 1.2 superblocks, gpt, lvm, grub2-probe,
degraded array
                 Project: GNU GRUB
            Submitted by: oblu123
            Submitted on: Wed 29 Jan 2014 01:16:17 AM GMT
                Category: Configuration
                Severity: Major
                Priority: 5 - Normal
              Item Group: Software Error
                  Status: None
                 Privacy: Public
             Assigned to: None
         Originator Name: kitty the cutest
        Originator Email: address@hidden
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 
                 Release: 2.00
         Reproducibility: Every Time
         Planned Release: None

    _______________________________________________________

Details:


hello,
reproduced on 2.00_p5107-r2, 2.01-22, beta version as well.
below follows nondegraded and degraded test, both of them have attached result
of grub-probe.

nondegraded test
------------------

address@hidden:/tmp# mdadm --verbose --create --level=10 --raid-devices=4
--spare=0 /dev/md0 /dev/mapper/vg0-testv0 /dev/mapper/vg0-testv1
/dev/mapper/vg0-testv2 /dev/mapper/vg0-testv3
mdadm: layout defaults to n2
mdadm: layout defaults to n2
mdadm: chunk size defaults to 512K
mdadm: /dev/mapper/vg0-testv0 appears to be part of a raid array:
       level=raid10 devices=4 ctime=Wed Jan 29 00:56:36 2014
mdadm: /dev/mapper/vg0-testv1 appears to be part of a raid array:
       level=raid10 devices=4 ctime=Wed Jan 29 00:55:17 2014
mdadm: /dev/mapper/vg0-testv2 appears to be part of a raid array:
       level=raid10 devices=4 ctime=Wed Jan 29 00:56:36 2014
mdadm: /dev/mapper/vg0-testv3 appears to be part of a raid array:
       level=raid10 devices=4 ctime=Wed Jan 29 00:55:17 2014
mdadm: size set to 101376K
Continue creating array? y
mdadm: Defaulting to version 1.2 metadata
mdadm: array /dev/md0 started.


address@hidden:/tmp# cat /proc/mdstat
Personalities : [raid10]
md0 : active raid10 dm-15[3] dm-14[2] dm-13[1] dm-12[0]
      202752 blocks super 1.2 512K chunks 2 near-copies [4/4] [UUUU]


address@hidden:/tmp# grub-probe --target=abstraction -d /dev/md0 -vvv
1>/tmp/grub-probe_nondegraded.txt 2>&1

address@hidden:/tmp# find /dev/ -name "*4f6*"
/dev/disk/by-id/md-uuid-4f6ca543:d8739e24:54baaa2f:f45aa75e

address@hidden:/tmp# mdadm --stop /dev/md0
mdadm: stopped /dev/md0




degraded test
------------------

address@hidden:/tmp# mdadm --verbose --create --level=10 --raid-devices=4
--spare=0 /dev/md0 /dev/mapper/vg0-testv0 missing /dev/mapper/
vg0-testv2 missing
mdadm: layout defaults to n2
mdadm: layout defaults to n2
mdadm: chunk size defaults to 512K
mdadm: /dev/mapper/vg0-testv0 appears to be part of a raid array:
       level=raid10 devices=4 ctime=Wed Jan 29 01:00:17 2014
mdadm: /dev/mapper/vg0-testv2 appears to be part of a raid array:
       level=raid10 devices=4 ctime=Wed Jan 29 01:00:17 2014
mdadm: size set to 101376K
Continue creating array? y
mdadm: Defaulting to version 1.2 metadata
mdadm: array /dev/md0 started.
address@hidden:/tmp#
address@hidden:/tmp# cat /proc/mdstat
Personalities : [raid10]
md0 : active raid10 dm-14[2] dm-12[0]
      202752 blocks super 1.2 512K chunks 2 near-copies [4/2] [U_U_]


address@hidden:/tmp# cat /proc/mdstat
Personalities : [raid10]
md0 : active raid10 dm-14[2] dm-12[0]
      202752 blocks super 1.2 512K chunks 2 near-copies [4/2] [U_U_]


address@hidden:/tmp# grub-probe --target=abstraction -d /dev/md0 -vvv
1>/tmp/grub-probe_degraded.txt 2>&1

address@hidden:/tmp# find /dev/ -name "*ad1*"
/dev/disk/by-id/md-uuid-ad1c1d66:87dec672:afd3e543:ccb5a190

address@hidden:/tmp# mdadm --stop /dev/md0
mdadm: stopped /dev/md0



regards,
- sh




    _______________________________________________________

File Attachments:


-------------------------------------------------------
Date: Wed 29 Jan 2014 01:16:17 AM GMT  Name: grub-probe_degraded.txt  Size:
72kB   By: oblu123

<http://savannah.gnu.org/bugs/download.php?file_id=30401>
-------------------------------------------------------
Date: Wed 29 Jan 2014 01:16:17 AM GMT  Name: grub-probe_nondegraded.txt  Size:
85kB   By: oblu123

<http://savannah.gnu.org/bugs/download.php?file_id=30402>

    _______________________________________________________

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