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[bug #39527] grub2-install fails when 1-Disk RAID-1 array is present


From: Wesley
Subject: [bug #39527] grub2-install fails when 1-Disk RAID-1 array is present
Date: Fri, 19 Jul 2013 15:37:29 +0000
User-agent: Mozilla/5.0 (X11; Linux i686; rv:17.0) Gecko/20100101 Firefox/17.0

URL:
  <http://savannah.gnu.org/bugs/?39527>

                 Summary: grub2-install fails when 1-Disk RAID-1 array is
present
                 Project: GNU GRUB
            Submitted by: pa4wdh
            Submitted on: Fri 19 Jul 2013 03:37:28 PM GMT
                Category: Installation
                Severity: Major
                Priority: 5 - Normal
              Item Group: Software Error
                  Status: None
                 Privacy: Public
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 
                 Release: other
         Reproducibility: Every Time
         Planned Release: None

    _______________________________________________________

Details:

Hi All,

I was installing a new system where i intended to use software raid-1 in the
Linux kernel, but during installation only one disk was available. I created
the "array"'s voor / and /boot with one disk only. For software raid itself is
was a legal (but i admit strange) configuration. When installing grub2 on my
distrution (gentoo) it didn't work and gave some backtraces.

First i tried making /boot "redundant" by creating a second raid partition on
the same drive, this still gave the same result. Only after making both
redundant things worked as intended and grub2 was installed without problems.

Some details:
My partitioning:
Disk /dev/sda: 1000.2 GB, 1000204886016 bytes, 1953525168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0xf96d7342

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1            2048      264191      131072   fd  Linux raid autodetect
/dev/sda2          264192     8652799     4194304   fd  Linux raid autodetect

Disk /dev/sdb: 1000.2 GB, 1000204886016 bytes, 1953525168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x0009e87d

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1   *          62     5128391     2564165    b  W95 FAT32
Partition 1 does not start on physical sector boundary.
/dev/sdb2         5128392    15430559     5151084   83  Linux

Here sda is the drive i'm isntalling on, sdb contained a rescue installation
which i booted to do the install at sda.

When running grub2-install /dev/sda, the result was this:
pc12 grub2 # grub-install --no-floppy /dev/sda
/dev/md0 does not have any corresponding BIOS drive.
pc12 / # grub2-install /dev/sda
*** glibc detected *** /usr/sbin/grub2-probe: double free or corruption
(fasttop): 0x00007f78e019c0b0 ***
======= Backtrace: =========
/lib64/libc.so.6(+0x7d586)[0x7f78df6f1586]
/usr/sbin/grub2-probe(+0xbd5bd)[0x7f78dff3b5bd]
/usr/sbin/grub2-probe(+0xd142e)[0x7f78dff4f42e]
/usr/sbin/grub2-probe(+0xd1677)[0x7f78dff4f677]
/usr/sbin/grub2-probe(+0xd1639)[0x7f78dff4f639]
/usr/sbin/grub2-probe(+0xe1da)[0x7f78dfe8c1da]
/usr/sbin/grub2-probe(main+0x315)[0x7f78dfe88246]
/lib64/libc.so.6(__libc_start_main+0xed)[0x7f78df6985dd]
/usr/sbin/grub2-probe(+0x7bb9)[0x7f78dfe85bb9]
======= Memory map: ========
7f78dee23000-7f78dee38000 r-xp 00000000 09:01 198945                    
/usr/lib64/gcc/x86_64-pc-linux-gnu/4.6.3/libgcc_s.so.1
7f78dee38000-7f78df038000 ---p 00015000 09:01 198945                    
/usr/lib64/gcc/x86_64-pc-linux-gnu/4.6.3/libgcc_s.so.1
7f78df038000-7f78df039000 r-xp 00015000 09:01 198945                    
/usr/lib64/gcc/x86_64-pc-linux-gnu/4.6.3/libgcc_s.so.1
7f78df039000-7f78df03a000 rwxp 00016000 09:01 198945                    
/usr/lib64/gcc/x86_64-pc-linux-gnu/4.6.3/libgcc_s.so.1
7f78df03a000-7f78df052000 r-xp 00000000 09:01 98446                     
/lib64/libpthread-2.15.so
7f78df052000-7f78df251000 ---p 00018000 09:01 98446                     
/lib64/libpthread-2.15.so
7f78df251000-7f78df252000 r-xp 00017000 09:01 98446                     
/lib64/libpthread-2.15.so
7f78df252000-7f78df253000 rwxp 00018000 09:01 98446                     
/lib64/libpthread-2.15.so
7f78df253000-7f78df257000 rwxp 00000000 00:00 0 
7f78df257000-7f78df25f000 r-xp 00000000 09:01 98455                     
/lib64/librt-2.15.so
7f78df25f000-7f78df45e000 ---p 00008000 09:01 98455                     
/lib64/librt-2.15.so
7f78df45e000-7f78df45f000 r-xp 00007000 09:01 98455                     
/lib64/librt-2.15.so
7f78df45f000-7f78df460000 rwxp 00008000 09:01 98455                     
/lib64/librt-2.15.so
7f78df460000-7f78df472000 r-xp 00000000 09:01 98391                     
/lib64/libudev.so.1.3.5
7f78df472000-7f78df672000 ---p 00012000 09:01 98391                     
/lib64/libudev.so.1.3.5
7f78df672000-7f78df673000 r-xp 00012000 09:01 98391                     
/lib64/libudev.so.1.3.5
7f78df673000-7f78df674000 rwxp 00013000 09:01 98391                     
/lib64/libudev.so.1.3.5
7f78df674000-7f78df813000 r-xp 00000000 09:01 98361                     
/lib64/libc-2.15.so
7f78df813000-7f78dfa13000 ---p 0019f000 09:01 98361                     
/lib64/libc-2.15.so
7f78dfa13000-7f78dfa17000 r-xp 0019f000 09:01 98361                     
/lib64/libc-2.15.so
7f78dfa17000-7f78dfa19000 rwxp 001a3000 09:01 98361                     
/lib64/libc-2.15.so
7f78dfa19000-7f78dfa1d000 rwxp 00000000 00:00 0 
7f78dfa1d000-7f78dfa56000 r-xp 00000000 09:01 313963                    
/lib64/libdevmapper.so.1.02
7f78dfa56000-7f78dfc55000 ---p 00039000 09:01 313963                    
/lib64/libdevmapper.so.1.02
7f78dfc55000-7f78dfc56000 r-xp 00038000 09:01 313963                    
/lib64/libdevmapper.so.1.02
7f78dfc56000-7f78dfc59000 rwxp 00039000 09:01 313963                    
/lib64/libdevmapper.so.1.02
7f78dfc59000-7f78dfc5a000 rwxp 00000000 00:00 0 
7f78dfc5a000-7f78dfc7b000 r-xp 00000000 09:01 98439                     
/lib64/ld-2.15.so
7f78dfe6f000-7f78dfe73000 rwxp 00000000 00:00 0 
7f78dfe74000-7f78dfe7b000 rwxp 00000000 00:00 0 
7f78dfe7b000-7f78dfe7c000 r-xp 00021000 09:01 98439                     
/lib64/ld-2.15.so
7f78dfe7c000-7f78dfe7d000 rwxp 00022000 09:01 98439                     
/lib64/ld-2.15.so
7f78dfe7d000-7f78dfe7e000 rwxp 00000000 00:00 0 
7f78dfe7e000-7f78dff83000 r-xp 00000000 09:01 331347                    
/usr/sbin/grub2-probe
7f78e0183000-7f78e0184000 r-xp 00105000 09:01 331347                    
/usr/sbin/grub2-probe
7f78e0184000-7f78e018b000 rwxp 00106000 09:01 331347                    
/usr/sbin/grub2-probe
7f78e018b000-7f78e040c000 rwxp 00000000 00:00 0                         
[heap]
7ffff7ccb000-7ffff7cf1000 rwxp 00000000 00:00 0                         
[stack]
7ffff7d41000-7ffff7d42000 r-xp 00000000 00:00 0                         
[vdso]
ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0                 
[vsyscall]
xargs: /usr/sbin/grub2-probe: terminated by signal 6
*** glibc detected *** /usr/sbin/grub2-probe: double free or corruption
(fasttop): 0x00007f03898170b0 ***
======= Backtrace: =========
/lib64/libc.so.6(+0x7d586)[0x7f0388d6c586]
/usr/sbin/grub2-probe(+0xbd5bd)[0x7f03895b65bd]
/usr/sbin/grub2-probe(+0xd142e)[0x7f03895ca42e]
/usr/sbin/grub2-probe(+0xd1677)[0x7f03895ca677]
/usr/sbin/grub2-probe(+0xd1639)[0x7f03895ca639]
/usr/sbin/grub2-probe(+0xe1da)[0x7f03895071da]
/usr/sbin/grub2-probe(main+0x315)[0x7f0389503246]
/lib64/libc.so.6(__libc_start_main+0xed)[0x7f0388d135dd]
/usr/sbin/grub2-probe(+0x7bb9)[0x7f0389500bb9]
======= Memory map: ========
7f038849e000-7f03884b3000 r-xp 00000000 09:01 198945                    
/usr/lib64/gcc/x86_64-pc-linux-gnu/4.6.3/libgcc_s.so.1
7f03884b3000-7f03886b3000 ---p 00015000 09:01 198945                    
/usr/lib64/gcc/x86_64-pc-linux-gnu/4.6.3/libgcc_s.so.1
7f03886b3000-7f03886b4000 r-xp 00015000 09:01 198945                    
/usr/lib64/gcc/x86_64-pc-linux-gnu/4.6.3/libgcc_s.so.1
7f03886b4000-7f03886b5000 rwxp 00016000 09:01 198945                    
/usr/lib64/gcc/x86_64-pc-linux-gnu/4.6.3/libgcc_s.so.1
7f03886b5000-7f03886cd000 r-xp 00000000 09:01 98446                     
/lib64/libpthread-2.15.so
7f03886cd000-7f03888cc000 ---p 00018000 09:01 98446                     
/lib64/libpthread-2.15.so
7f03888cc000-7f03888cd000 r-xp 00017000 09:01 98446                     
/lib64/libpthread-2.15.so
7f03888cd000-7f03888ce000 rwxp 00018000 09:01 98446                     
/lib64/libpthread-2.15.so
7f03888ce000-7f03888d2000 rwxp 00000000 00:00 0 
7f03888d2000-7f03888da000 r-xp 00000000 09:01 98455                     
/lib64/librt-2.15.so
7f03888da000-7f0388ad9000 ---p 00008000 09:01 98455                     
/lib64/librt-2.15.so
7f0388ad9000-7f0388ada000 r-xp 00007000 09:01 98455                     
/lib64/librt-2.15.so
7f0388ada000-7f0388adb000 rwxp 00008000 09:01 98455                     
/lib64/librt-2.15.so
7f0388adb000-7f0388aed000 r-xp 00000000 09:01 98391                     
/lib64/libudev.so.1.3.5
7f0388aed000-7f0388ced000 ---p 00012000 09:01 98391                     
/lib64/libudev.so.1.3.5
7f0388ced000-7f0388cee000 r-xp 00012000 09:01 98391                     
/lib64/libudev.so.1.3.5
7f0388cee000-7f0388cef000 rwxp 00013000 09:01 98391                     
/lib64/libudev.so.1.3.5
7f0388cef000-7f0388e8e000 r-xp 00000000 09:01 98361                     
/lib64/libc-2.15.so
7f0388e8e000-7f038908e000 ---p 0019f000 09:01 98361                     
/lib64/libc-2.15.so
7f038908e000-7f0389092000 r-xp 0019f000 09:01 98361                     
/lib64/libc-2.15.so
7f0389092000-7f0389094000 rwxp 001a3000 09:01 98361                     
/lib64/libc-2.15.so
7f0389094000-7f0389098000 rwxp 00000000 00:00 0 
7f0389098000-7f03890d1000 r-xp 00000000 09:01 313963                    
/lib64/libdevmapper.so.1.02
7f03890d1000-7f03892d0000 ---p 00039000 09:01 313963                    
/lib64/libdevmapper.so.1.02
7f03892d0000-7f03892d1000 r-xp 00038000 09:01 313963                    
/lib64/libdevmapper.so.1.02
7f03892d1000-7f03892d4000 rwxp 00039000 09:01 313963                    
/lib64/libdevmapper.so.1.02
7f03892d4000-7f03892d5000 rwxp 00000000 00:00 0 
7f03892d5000-7f03892f6000 r-xp 00000000 09:01 98439                     
/lib64/ld-2.15.so
7f03894ea000-7f03894ee000 rwxp 00000000 00:00 0 
7f03894ef000-7f03894f6000 rwxp 00000000 00:00 0 
7f03894f6000-7f03894f7000 r-xp 00021000 09:01 98439                     
/lib64/ld-2.15.so
7f03894f7000-7f03894f8000 rwxp 00022000 09:01 98439                     
/lib64/ld-2.15.so
7f03894f8000-7f03894f9000 rwxp 00000000 00:00 0 
7f03894f9000-7f03895fe000 r-xp 00000000 09:01 331347                    
/usr/sbin/grub2-probe
7f03897fe000-7f03897ff000 r-xp 00105000 09:01 331347                    
/usr/sbin/grub2-probe
7f03897ff000-7f0389806000 rwxp 00106000 09:01 331347                    
/usr/sbin/grub2-probe
7f0389806000-7f038992f000 rwxp 00000000 00:00 0                         
[heap]
7fffd659b000-7fffd65c0000 rwxp 00000000 00:00 0                         
[stack]
7fffd65ff000-7fffd6600000 r-xp 00000000 00:00 0                         
[vdso]
ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0                 
[vsyscall]
*** glibc detected *** /usr/sbin/grub2-probe: double free or corruption
(fasttop): 0x00007faa35a7f0b0 ***
======= Backtrace: =========
/lib64/libc.so.6(+0x7d586)[0x7faa34fd4586]
/usr/sbin/grub2-probe(+0xbd5bd)[0x7faa3581e5bd]
/usr/sbin/grub2-probe(+0xd142e)[0x7faa3583242e]
/usr/sbin/grub2-probe(+0xd1677)[0x7faa35832677]
/usr/sbin/grub2-probe(+0xd1639)[0x7faa35832639]
/usr/sbin/grub2-probe(+0xe1da)[0x7faa3576f1da]
/usr/sbin/grub2-probe(main+0x315)[0x7faa3576b246]
/lib64/libc.so.6(__libc_start_main+0xed)[0x7faa34f7b5dd]
/usr/sbin/grub2-probe(+0x7bb9)[0x7faa35768bb9]
======= Memory map: ========
7faa34706000-7faa3471b000 r-xp 00000000 09:01 198945                    
/usr/lib64/gcc/x86_64-pc-linux-gnu/4.6.3/libgcc_s.so.1
7faa3471b000-7faa3491b000 ---p 00015000 09:01 198945                    
/usr/lib64/gcc/x86_64-pc-linux-gnu/4.6.3/libgcc_s.so.1
7faa3491b000-7faa3491c000 r-xp 00015000 09:01 198945                    
/usr/lib64/gcc/x86_64-pc-linux-gnu/4.6.3/libgcc_s.so.1
7faa3491c000-7faa3491d000 rwxp 00016000 09:01 198945                    
/usr/lib64/gcc/x86_64-pc-linux-gnu/4.6.3/libgcc_s.so.1
7faa3491d000-7faa34935000 r-xp 00000000 09:01 98446                     
/lib64/libpthread-2.15.so
7faa34935000-7faa34b34000 ---p 00018000 09:01 98446                     
/lib64/libpthread-2.15.so
7faa34b34000-7faa34b35000 r-xp 00017000 09:01 98446                     
/lib64/libpthread-2.15.so
7faa34b35000-7faa34b36000 rwxp 00018000 09:01 98446                     
/lib64/libpthread-2.15.so
7faa34b36000-7faa34b3a000 rwxp 00000000 00:00 0 
7faa34b3a000-7faa34b42000 r-xp 00000000 09:01 98455                     
/lib64/librt-2.15.so
7faa34b42000-7faa34d41000 ---p 00008000 09:01 98455                     
/lib64/librt-2.15.so
7faa34d41000-7faa34d42000 r-xp 00007000 09:01 98455                     
/lib64/librt-2.15.so
7faa34d42000-7faa34d43000 rwxp 00008000 09:01 98455                     
/lib64/librt-2.15.so
7faa34d43000-7faa34d55000 r-xp 00000000 09:01 98391                     
/lib64/libudev.so.1.3.5
7faa34d55000-7faa34f55000 ---p 00012000 09:01 98391                     
/lib64/libudev.so.1.3.5
7faa34f55000-7faa34f56000 r-xp 00012000 09:01 98391                     
/lib64/libudev.so.1.3.5
7faa34f56000-7faa34f57000 rwxp 00013000 09:01 98391                     
/lib64/libudev.so.1.3.5
7faa34f57000-7faa350f6000 r-xp 00000000 09:01 98361                     
/lib64/libc-2.15.so
7faa350f6000-7faa352f6000 ---p 0019f000 09:01 98361                     
/lib64/libc-2.15.so
7faa352f6000-7faa352fa000 r-xp 0019f000 09:01 98361                     
/lib64/libc-2.15.so
7faa352fa000-7faa352fc000 rwxp 001a3000 09:01 98361                     
/lib64/libc-2.15.so
7faa352fc000-7faa35300000 rwxp 00000000 00:00 0 
7faa35300000-7faa35339000 r-xp 00000000 09:01 313963                    
/lib64/libdevmapper.so.1.02
7faa35339000-7faa35538000 ---p 00039000 09:01 313963                    
/lib64/libdevmapper.so.1.02
7faa35538000-7faa35539000 r-xp 00038000 09:01 313963                    
/lib64/libdevmapper.so.1.02
7faa35539000-7faa3553c000 rwxp 00039000 09:01 313963                    
/lib64/libdevmapper.so.1.02
7faa3553c000-7faa3553d000 rwxp 00000000 00:00 0 
7faa3553d000-7faa3555e000 r-xp 00000000 09:01 98439                     
/lib64/ld-2.15.so
7faa35752000-7faa35756000 rwxp 00000000 00:00 0 
7faa35757000-7faa3575e000 rwxp 00000000 00:00 0 
7faa3575e000-7faa3575f000 r-xp 00021000 09:01 98439                     
/lib64/ld-2.15.so
7faa3575f000-7faa35760000 rwxp 00022000 09:01 98439                     
/lib64/ld-2.15.so
7faa35760000-7faa35761000 rwxp 00000000 00:00 0 
7faa35761000-7faa35866000 r-xp 00000000 09:01 331347                    
/usr/sbin/grub2-probe
7faa35a66000-7faa35a67000 r-xp 00105000 09:01 331347                    
/usr/sbin/grub2-probe
7faa35a67000-7faa35a6e000 rwxp 00106000 09:01 331347                    
/usr/sbin/grub2-probe
7faa35a6e000-7faa35b97000 rwxp 00000000 00:00 0                         
[heap]
7fff32adf000-7fff32b05000 rwxp 00000000 00:00 0                         
[stack]
7fff32bff000-7fff32c00000 r-xp 00000000 00:00 0                         
[vdso]
ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0                 
[vsyscall]
xargs: /usr/sbin/grub2-probe: terminated by signal 6
xargs: /usr/sbin/grub2-probe: terminated by signal 6
*** glibc detected *** /usr/sbin/grub2-probe: double free or corruption
(fasttop): 0x00007f61cc4540b0 ***
======= Backtrace: =========
/lib64/libc.so.6(+0x7d586)[0x7f61cb9a9586]
/usr/sbin/grub2-probe(+0xbd5bd)[0x7f61cc1f35bd]
/usr/sbin/grub2-probe(+0xd142e)[0x7f61cc20742e]
/usr/sbin/grub2-probe(+0xd1677)[0x7f61cc207677]
/usr/sbin/grub2-probe(+0xd1639)[0x7f61cc207639]
/usr/sbin/grub2-probe(+0xe1da)[0x7f61cc1441da]
/usr/sbin/grub2-probe(main+0x315)[0x7f61cc140246]
/lib64/libc.so.6(__libc_start_main+0xed)[0x7f61cb9505dd]
/usr/sbin/grub2-probe(+0x7bb9)[0x7f61cc13dbb9]
======= Memory map: ========
7f61cb0db000-7f61cb0f0000 r-xp 00000000 09:01 198945                    
/usr/lib64/gcc/x86_64-pc-linux-gnu/4.6.3/libgcc_s.so.1
7f61cb0f0000-7f61cb2f0000 ---p 00015000 09:01 198945                    
/usr/lib64/gcc/x86_64-pc-linux-gnu/4.6.3/libgcc_s.so.1
7f61cb2f0000-7f61cb2f1000 r-xp 00015000 09:01 198945                    
/usr/lib64/gcc/x86_64-pc-linux-gnu/4.6.3/libgcc_s.so.1
7f61cb2f1000-7f61cb2f2000 rwxp 00016000 09:01 198945                    
/usr/lib64/gcc/x86_64-pc-linux-gnu/4.6.3/libgcc_s.so.1
7f61cb2f2000-7f61cb30a000 r-xp 00000000 09:01 98446                     
/lib64/libpthread-2.15.so
7f61cb30a000-7f61cb509000 ---p 00018000 09:01 98446                     
/lib64/libpthread-2.15.so
7f61cb509000-7f61cb50a000 r-xp 00017000 09:01 98446                     
/lib64/libpthread-2.15.so
7f61cb50a000-7f61cb50b000 rwxp 00018000 09:01 98446                     
/lib64/libpthread-2.15.so
7f61cb50b000-7f61cb50f000 rwxp 00000000 00:00 0 
7f61cb50f000-7f61cb517000 r-xp 00000000 09:01 98455                     
/lib64/librt-2.15.so
7f61cb517000-7f61cb716000 ---p 00008000 09:01 98455                     
/lib64/librt-2.15.so
7f61cb716000-7f61cb717000 r-xp 00007000 09:01 98455                     
/lib64/librt-2.15.so
7f61cb717000-7f61cb718000 rwxp 00008000 09:01 98455                     
/lib64/librt-2.15.so
7f61cb718000-7f61cb72a000 r-xp 00000000 09:01 98391                     
/lib64/libudev.so.1.3.5
7f61cb72a000-7f61cb92a000 ---p 00012000 09:01 98391                     
/lib64/libudev.so.1.3.5
7f61cb92a000-7f61cb92b000 r-xp 00012000 09:01 98391                     
/lib64/libudev.so.1.3.5
7f61cb92b000-7f61cb92c000 rwxp 00013000 09:01 98391                     
/lib64/libudev.so.1.3.5
7f61cb92c000-7f61cbacb000 r-xp 00000000 09:01 98361                     
/lib64/libc-2.15.so
7f61cbacb000-7f61cbccb000 ---p 0019f000 09:01 98361                     
/lib64/libc-2.15.so
7f61cbccb000-7f61cbccf000 r-xp 0019f000 09:01 98361                     
/lib64/libc-2.15.so
7f61cbccf000-7f61cbcd1000 rwxp 001a3000 09:01 98361                     
/lib64/libc-2.15.so
7f61cbcd1000-7f61cbcd5000 rwxp 00000000 00:00 0 
7f61cbcd5000-7f61cbd0e000 r-xp 00000000 09:01 313963                    
/lib64/libdevmapper.so.1.02
7f61cbd0e000-7f61cbf0d000 ---p 00039000 09:01 313963                    
/lib64/libdevmapper.so.1.02
7f61cbf0d000-7f61cbf0e000 r-xp 00038000 09:01 313963                    
/lib64/libdevmapper.so.1.02
7f61cbf0e000-7f61cbf11000 rwxp 00039000 09:01 313963                    
/lib64/libdevmapper.so.1.02
7f61cbf11000-7f61cbf12000 rwxp 00000000 00:00 0 
7f61cbf12000-7f61cbf33000 r-xp 00000000 09:01 98439                     
/lib64/ld-2.15.so
7f61cc127000-7f61cc12b000 rwxp 00000000 00:00 0 
7f61cc12c000-7f61cc133000 rwxp 00000000 00:00 0 
7f61cc133000-7f61cc134000 r-xp 00021000 09:01 98439                     
/lib64/ld-2.15.so
7f61cc134000-7f61cc135000 rwxp 00022000 09:01 98439                     
/lib64/ld-2.15.so
7f61cc135000-7f61cc136000 rwxp 00000000 00:00 0 
7f61cc136000-7f61cc23b000 r-xp 00000000 09:01 331347                    
/usr/sbin/grub2-probe
7f61cc43b000-7f61cc43c000 r-xp 00105000 09:01 331347                    
/usr/sbin/grub2-probe
7f61cc43c000-7f61cc443000 rwxp 00106000 09:01 331347                    
/usr/sbin/grub2-probe
7f61cc443000-7f61cc56c000 rwxp 00000000 00:00 0                         
[heap]
7fffb99a1000-7fffb99c6000 rwxp 00000000 00:00 0                         
[stack]
7fffb99ff000-7fffb9a00000 r-xp 00000000 00:00 0                         
[vdso]
ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0                 
[vsyscall]

If i removed mdadm from the installation the backtraces disapear, but
grub2-install was still not succesful (which i guess is normal when using
software raid).

My 1-disk "array"'s look like this:
Personalities : [raid0] [raid1] [raid6] [raid5] [raid4] [raid10]
md1 : active raid1 sda2[0]
      4194240 blocks [1/1] [U]
     
md0 : active raid1 sda1[0]
      131008 blocks [1/1] [U]
     
unused devices: <none> 

To create one use:
mdadm --create -l 1 -n 1 -f --metadata=0.90 <md device> <partition device>

Please let me know if you need any more information.

Best regards,
Wesley




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