Your message dated Tue, 15 Sep 2020 20:55:31 -0700
with message-id 
<CAFHYt56kL=Mmzd4cCNrEqr2n9tsiZUGSH=atjm5sminoaef...@mail.gmail.com>
and subject line Re: mdadm: growing fails when old raid partitions present on 
disk (solved)
has caused the Debian Bug report #744860,
regarding mdadm: growing fails when old raid partitions present on disk (solved)
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
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-- 
744860: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=744860
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Package: mdadm
Version: 3.3-2
Severity: normal

Dear Maintainer,

this is a description of a problem I encountered and how I solved it.  I
think mdadm should have detected the problem and not let it happen.

I had /home on md0 in raid1 with two partitions sda5 and sdb5, 100GB each.

I wanted to enlarge the raid, but the partitions could not be expanded,
however I had sda9 and sdb9 with 200GB each.  That's what I did on the
live system (from memory, sorry, no logs):

# mdadm /dev/md0 --add /dev/sd[ab]9
# mdadm --grow /dev/md0 --raid-devices=4

The array started reconstruction, it took couple of hours.  Then:

# mdadm /dev/md0 --fail /dev/sd[ab]5
# mdadm /dev/md0 --remove /dev/sd[ab]5 

Then I checked in /proc/mdstat and I saw everything looked alright.
Unfortunately I did not dump what I saw.  At this point I did:

# mdadm /dev/md0 --grow --size=max

mdadm hanged in uninterruptible sleep, and some processes hanged too,
while most of them kept working regularly.  Trying to cat /proc/mdstat
hanged too in uninterruptible sleep.  Same for shutdown.  I then killed
by hand all daemons and processes that let them being killed (most of
them) and hit the reset button.  At boot I had a failure on md0.
Investigation in single user mode showed that --examine --scan and
--detail --scan gave different results.  The latter was the same as
shown in /proc/mdstat and said that I had an inactive md0 with two
partitions sda5 and sdb5, both marked as spares.  On the other hand,
--examine showed TWO md0 arrays, the second of which had two partitions
sda9 and sdb9.  Unfortunately, I did not dump the output.

Anyway, I zeroed the superblocks of sda5 and sdb5, and after reboot
everything was alright, with md0 on sda9 and sdb9.  I then did

# mdadm /dev/md0 --grow --size=max

which worked without problems and triggered a reconstruction.

I think that mdadm should have detected the situation and stopped, while
emitting a warning and suggestions on what to do, rather than hanging.

-- 
Francesco Potortì (ricercatore)        Voice:  +39.050.621.3058
ISTI - Area della ricerca CNR          Mobile: +39.348.8283.107
via G. Moruzzi 1, I-56124 Pisa         Skype:  wnlabisti
(entrance 20, 1st floor, room C71)     Web:    http://fly.isti.cnr.it



-- Package-specific info:
--- mdadm.conf
DEVICE partitions
CREATE owner=root group=disk mode=0660 auto=yes
HOMEHOST <system>
MAILADDR root
ARRAY /dev/md0 metadata=0.90 UUID=bcf2d090:8e2cb854:f5478e52:699d5718
ARRAY /dev/md1 metadata=0.90 UUID=be280dca:5a7ce8a3:6c559211:bd692a54
ARRAY /dev/md2 metadata=0.90 UUID=81410e46:c10c6835:3a5bc96f:db554bf5
ARRAY /dev/md3 metadata=1.2 name=tucano.isti.cnr.it:3 
UUID=4baa4e6b:68c69979:3123a8df:80f7c2a2
ARRAY /dev/md/scrap metadata=1.2 name=tucano.isti.cnr.it:scrap 
UUID=df623988:c7e23a4d:85307fdb:d6bb882e

--- /etc/default/mdadm
INITRDSTART='/dev/md1'
AUTOSTART=true
AUTOCHECK=true
START_DAEMON=true
DAEMON_OPTIONS="--syslog"
VERBOSE=false

--- /proc/mdstat:
Personalities : [raid1] 
md3 : active raid1 sda1[0] sdb1[2]
      219122496 blocks super 1.2 [2/2] [UU]
      
md0 : active raid1 sdb9[0] sda9[1]
      204798912 blocks [2/2] [UU]
      
md2 : active (auto-read-only) raid1 sdb8[1] sda8[0]
      9767424 blocks [2/2] [UU]
      
md1 : active raid1 sda6[0] sdb6[1]
      29294400 blocks [2/2] [UU]
      
unused devices: <none>

--- /proc/partitions:
major minor  #blocks  name

   8       16  976762584 sdb
   8       17  219253760 sdb1
   8       18          1 sdb2
   8       19  353430000 sdb3
   8       21  104856223 sdb5
   8       22   29390886 sdb6
   8       23   37784848 sdb7
   8       24   10249438 sdb8
   8       25  204798976 sdb9
   8        0  976762584 sda
   8        1  219253760 sda1
   8        2          1 sda2
   8        3  353430000 sda3
   8        5  104856223 sda5
   8        6   29390886 sda6
   8        7   37784848 sda7
   8        8   10249438 sda8
   8        9  204798976 sda9
   8       32  244198584 sdc
   8       33  228837344 sdc1
   8       34   15360184 sdc2
  11        0    1048575 sr0
   9        1   29294400 md1
   9        2    9767424 md2
   9        0  204798912 md0
   9        3  219122496 md3

--- LVM physical volumes:
LVM does not seem to be used.
--- mount output
sysfs on /sys type sysfs (rw,nosuid,nodev,noexec,relatime)
proc on /proc type proc (rw,nosuid,nodev,noexec,relatime)
udev on /dev type devtmpfs (rw,relatime,size=10240k,nr_inodes=1498800,mode=755)
devpts on /dev/pts type devpts 
(rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000)
tmpfs on /run type tmpfs (rw,nosuid,noexec,relatime,size=1207416k,mode=755)
/dev/disk/by-label/Debian on / type ext3 
(rw,relatime,errors=remount-ro,data=ordered)
tmpfs on /run/lock type tmpfs (rw,nosuid,nodev,noexec,relatime,size=5120k)
pstore on /sys/fs/pstore type pstore (rw,relatime)
tmpfs on /run/shm type tmpfs (rw,nosuid,nodev,noexec,relatime,size=4368300k)
/dev/md0 on /home type ext3 (rw,relatime,errors=remount-ro,data=ordered)
/dev/md3 on /scratch type ext4 (rw,relatime,errors=remount-ro,data=ordered)
tmpfs on /tmp type tmpfs (rw,relatime,size=9437184k)
rpc_pipefs on /run/rpc_pipefs type rpc_pipefs (rw,relatime)
fusectl on /sys/fs/fuse/connections type fusectl (rw,relatime)
binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc 
(rw,nosuid,nodev,noexec,relatime)
nfsd on /proc/fs/nfsd type nfsd (rw,relatime)
gvfsd-fuse on /home/pot/.gvfs type fuse.gvfsd-fuse 
(rw,nosuid,nodev,relatime,user_id=1000,group_id=1000)

--- initrd.img-3.12-1-amd64:
88860 blocks
da8315d47cb6bf8d731c02e50c4761d9  ./conf/mdadm
655d97ccbc158e234095a7c79b25f8a4  
./lib/modules/3.12-1-amd64/kernel/drivers/md/dm-crypt.ko
a4c95a6b91916f9ce68a7da4d0627e83  
./lib/modules/3.12-1-amd64/kernel/drivers/md/md-mod.ko
c3f2ba3fc6f9398f0de7c1e59783af47  
./lib/modules/3.12-1-amd64/kernel/drivers/md/multipath.ko
c7493d6c5c62b3c6cf12155e88992e46  
./lib/modules/3.12-1-amd64/kernel/drivers/md/raid456.ko
327c413b20346760d5d2af3403e7d0cb  
./lib/modules/3.12-1-amd64/kernel/drivers/md/raid0.ko
2aa03f5aa355ed5c897bf9b0b4d74140  
./lib/modules/3.12-1-amd64/kernel/drivers/md/raid1.ko
97793c1712e29aa55a8b978afb8b97f4  
./lib/modules/3.12-1-amd64/kernel/drivers/md/linear.ko
920af6589a47ea54188d5131b815f36a  
./lib/modules/3.12-1-amd64/kernel/drivers/md/dm-region-hash.ko
ece7bf2383e5dbb28e4915bc197e68d6  
./lib/modules/3.12-1-amd64/kernel/drivers/md/dm-log.ko
e3d47c9f6e7df8a3e2db3542dece17f8  
./lib/modules/3.12-1-amd64/kernel/drivers/md/dm-mirror.ko
598b3f553676e4b3bb546738383dc9bd  
./lib/modules/3.12-1-amd64/kernel/drivers/md/dm-mod.ko
becf5ef9a74967434e2da59ecb1cb38c  
./lib/modules/3.12-1-amd64/kernel/drivers/md/raid10.ko
18e4e8f135699c0d908f0dec8e314f63  ./sbin/mdadm
82cb072fb935cfb02e94dbaf556de7c5  ./scripts/local-top/mdadm
8b091d95987f20db3ce1300385e0906c  ./etc/mdadm/mdadm.conf

--- initrd's /conf/conf.d/md:
no conf/md file.

--- /proc/modules:
dm_crypt 22291 0 - Live 0xffffffffa066e000
raid1 34672 4 - Live 0xffffffffa01c5000
md_mod 103700 5 raid1, Live 0xffffffffa01a0000
dm_mirror 21657 0 - Live 0xffffffffa0195000
dm_region_hash 13299 1 dm_mirror, Live 0xffffffffa012d000
dm_log 17539 2 dm_mirror,dm_region_hash, Live 0xffffffffa00f0000
dm_mod 80984 3 dm_crypt,dm_mirror,dm_log, Live 0xffffffffa0180000

--- /var/log/syslog:

--- volume detail:
/dev/sda:
   MBR Magic : aa55
Partition[0] :    438507520 sectors at         2048 (type 83)
Partition[1] :    774165856 sectors at    438510240 (type 05)
Partition[2] :    706860000 sectors at   1220940000 (type 83)
--
/dev/sda1:
          Magic : a92b4efc
        Version : 1.2
    Feature Map : 0x0
     Array UUID : 4baa4e6b:68c69979:3123a8df:80f7c2a2
           Name : tucano.isti.cnr.it:3  (local to host tucano.isti.cnr.it)
  Creation Time : Fri Mar 15 17:20:36 2013
     Raid Level : raid1
   Raid Devices : 2

 Avail Dev Size : 438245376 (208.97 GiB 224.38 GB)
     Array Size : 219122496 (208.97 GiB 224.38 GB)
  Used Dev Size : 438244992 (208.97 GiB 224.38 GB)
    Data Offset : 262144 sectors
   Super Offset : 8 sectors
   Unused Space : before=262064 sectors, after=384 sectors
          State : clean
    Device UUID : 2f00270a:c652c899:e3e3ba11:a186b087

    Update Time : Tue Apr 15 17:09:09 2014
       Checksum : 81159e46 - correct
         Events : 198028


   Device Role : Active device 0
   Array State : AA ('A' == active, '.' == missing, 'R' == replacing)
--
/dev/sda2:
   MBR Magic : aa55
Partition[0] :    209712447 sectors at           63 (type fd)
Partition[1] :     58781835 sectors at    209712510 (type 05)
--
/dev/sda3 is not recognised by mdadm.
/dev/sda5 is not recognised by mdadm.
/dev/sda6:
          Magic : a92b4efc
        Version : 0.90.03
           UUID : be280dca:5a7ce8a3:6c559211:bd692a54
  Creation Time : Fri May  5 16:37:53 2006
     Raid Level : raid1
  Used Dev Size : 29294400 (27.94 GiB 30.00 GB)
     Array Size : 29294400 (27.94 GiB 30.00 GB)
   Raid Devices : 2
  Total Devices : 2
Preferred Minor : 1

    Update Time : Tue Apr 15 17:10:30 2014
          State : clean
 Active Devices : 2
Working Devices : 2
 Failed Devices : 0
  Spare Devices : 0
       Checksum : 8661885a - correct
         Events : 11889590


      Number   Major   Minor   RaidDevice State
this     0       8        6        0      active sync   /dev/sda6

   0     0       8        6        0      active sync   /dev/sda6
   1     1       8       22        1      active sync   /dev/sdb6
--
/dev/sda7 is not recognised by mdadm.
/dev/sda8:
          Magic : a92b4efc
        Version : 0.90.00
           UUID : 81410e46:c10c6835:3a5bc96f:db554bf5 (local to host 
tucano.isti.cnr.it)
  Creation Time : Mon Dec  4 15:38:58 2006
     Raid Level : raid1
  Used Dev Size : 9767424 (9.31 GiB 10.00 GB)
     Array Size : 9767424 (9.31 GiB 10.00 GB)
   Raid Devices : 2
  Total Devices : 2
Preferred Minor : 2

    Update Time : Tue Apr 15 07:44:31 2014
          State : clean
 Active Devices : 2
Working Devices : 2
 Failed Devices : 0
  Spare Devices : 0
       Checksum : 9a8b0f55 - correct
         Events : 366526


      Number   Major   Minor   RaidDevice State
this     0       8        8        0      active sync   /dev/sda8

   0     0       8        8        0      active sync   /dev/sda8
   1     1       8       24        1      active sync   /dev/sdb8
--
/dev/sda9:
          Magic : a92b4efc
        Version : 0.90.03
           UUID : bcf2d090:8e2cb854:f5478e52:699d5718
  Creation Time : Fri May  5 16:37:42 2006
     Raid Level : raid1
  Used Dev Size : 204798912 (195.31 GiB 209.71 GB)
     Array Size : 204798912 (195.31 GiB 209.71 GB)
   Raid Devices : 2
  Total Devices : 2
Preferred Minor : 0

    Update Time : Tue Apr 15 17:10:28 2014
          State : clean
 Active Devices : 2
Working Devices : 2
 Failed Devices : 0
  Spare Devices : 0
       Checksum : f7eb8f79 - correct
         Events : 7279433


      Number   Major   Minor   RaidDevice State
this     1       8        9        1      active sync   /dev/sda9

   0     0       8       25        0      active sync   /dev/sdb9
   1     1       8        9        1      active sync   /dev/sda9
--
/dev/sdb:
   MBR Magic : aa55
Partition[0] :    438507520 sectors at         2048 (type 83)
Partition[1] :    774165856 sectors at    438510240 (type 05)
Partition[2] :    706860000 sectors at   1220940000 (type 83)
--
/dev/sdb1:
          Magic : a92b4efc
        Version : 1.2
    Feature Map : 0x0
     Array UUID : 4baa4e6b:68c69979:3123a8df:80f7c2a2
           Name : tucano.isti.cnr.it:3  (local to host tucano.isti.cnr.it)
  Creation Time : Fri Mar 15 17:20:36 2013
     Raid Level : raid1
   Raid Devices : 2

 Avail Dev Size : 438245376 (208.97 GiB 224.38 GB)
     Array Size : 219122496 (208.97 GiB 224.38 GB)
  Used Dev Size : 438244992 (208.97 GiB 224.38 GB)
    Data Offset : 262144 sectors
   Super Offset : 8 sectors
   Unused Space : before=262064 sectors, after=384 sectors
          State : clean
    Device UUID : f2692666:556cebca:f89ba30c:e169f193

    Update Time : Tue Apr 15 17:09:09 2014
       Checksum : 1561bcf0 - correct
         Events : 198028


   Device Role : Active device 1
   Array State : AA ('A' == active, '.' == missing, 'R' == replacing)
--
/dev/sdb2:
   MBR Magic : aa55
Partition[0] :    209712447 sectors at           63 (type fd)
Partition[1] :     58781835 sectors at    209712510 (type 05)
--
/dev/sdb3 is not recognised by mdadm.
/dev/sdb5 is not recognised by mdadm.
/dev/sdb6:
          Magic : a92b4efc
        Version : 0.90.03
           UUID : be280dca:5a7ce8a3:6c559211:bd692a54
  Creation Time : Fri May  5 16:37:53 2006
     Raid Level : raid1
  Used Dev Size : 29294400 (27.94 GiB 30.00 GB)
     Array Size : 29294400 (27.94 GiB 30.00 GB)
   Raid Devices : 2
  Total Devices : 2
Preferred Minor : 1

    Update Time : Tue Apr 15 17:10:30 2014
          State : clean
 Active Devices : 2
Working Devices : 2
 Failed Devices : 0
  Spare Devices : 0
       Checksum : 8661886c - correct
         Events : 11889590


      Number   Major   Minor   RaidDevice State
this     1       8       22        1      active sync   /dev/sdb6

   0     0       8        6        0      active sync   /dev/sda6
   1     1       8       22        1      active sync   /dev/sdb6
--
/dev/sdb7 is not recognised by mdadm.
/dev/sdb8:
          Magic : a92b4efc
        Version : 0.90.00
           UUID : 81410e46:c10c6835:3a5bc96f:db554bf5 (local to host 
tucano.isti.cnr.it)
  Creation Time : Mon Dec  4 15:38:58 2006
     Raid Level : raid1
  Used Dev Size : 9767424 (9.31 GiB 10.00 GB)
     Array Size : 9767424 (9.31 GiB 10.00 GB)
   Raid Devices : 2
  Total Devices : 2
Preferred Minor : 2

    Update Time : Tue Apr 15 07:44:31 2014
          State : clean
 Active Devices : 2
Working Devices : 2
 Failed Devices : 0
  Spare Devices : 0
       Checksum : 9a8b0f67 - correct
         Events : 366526


      Number   Major   Minor   RaidDevice State
this     1       8       24        1      active sync   /dev/sdb8

   0     0       8        8        0      active sync   /dev/sda8
   1     1       8       24        1      active sync   /dev/sdb8
--
/dev/sdb9:
          Magic : a92b4efc
        Version : 0.90.03
           UUID : bcf2d090:8e2cb854:f5478e52:699d5718
  Creation Time : Fri May  5 16:37:42 2006
     Raid Level : raid1
  Used Dev Size : 204798912 (195.31 GiB 209.71 GB)
     Array Size : 204798912 (195.31 GiB 209.71 GB)
   Raid Devices : 2
  Total Devices : 2
Preferred Minor : 0

    Update Time : Tue Apr 15 17:10:28 2014
          State : clean
 Active Devices : 2
Working Devices : 2
 Failed Devices : 0
  Spare Devices : 0
       Checksum : f7eb8f87 - correct
         Events : 7279433


      Number   Major   Minor   RaidDevice State
this     0       8       25        0      active sync   /dev/sdb9

   0     0       8       25        0      active sync   /dev/sdb9
   1     1       8        9        1      active sync   /dev/sda9
--
/dev/sdc:
   MBR Magic : aa55
Partition[0] :    457674689 sectors at           63 (type 83)
Partition[1] :     30720368 sectors at    457676800 (type 83)
--
/dev/sdc1 is not recognised by mdadm.
/dev/sdc2 is not recognised by mdadm.
/dev/sdd is not recognised by mdadm.
/dev/sde is not recognised by mdadm.

--- /proc/cmdline
BOOT_IMAGE=/boot/vmlinuz-3.12-1-amd64 root=LABEL=Debian ro rootdelay=9 
gfxpayload=1024x768x8,1024x768

--- grub2:
set root='mduuid/be280dca5a7ce8a36c559211bd692a54'
set root='mduuid/be280dca5a7ce8a36c559211bd692a54'
    set root=
        linux   /boot/vmlinuz-3.12-1-amd64 root=LABEL=Debian ro rootdelay=9 
gfxpayload=1024x768x8,1024x768
    set root=
    set root=
        insmod raid
        set root=(md3)
        linux   /boot/vmlinuz-2.6.32-5-amd64 root=/dev/md3 ro vga=0x305
        insmod raid
        set root=(hd2,2)
        linux   /boot/vmlinuz-2.6.32-5-amd64 root=LABEL=haroot ro vga=0x305
    set root=
    set root=
        set root='mduuid/be280dca5a7ce8a36c559211bd692a54'
        linux   /boot/vmlinuz-3.13-1-amd64 
root=UUID=4ee42fef-c2d5-406d-8aec-6832a5eb2e93 ro  
gfxpayload=1024x768x8,1024x768
                set root='mduuid/be280dca5a7ce8a36c559211bd692a54'
                linux   /boot/vmlinuz-3.13-1-amd64 
root=UUID=4ee42fef-c2d5-406d-8aec-6832a5eb2e93 ro  
gfxpayload=1024x768x8,1024x768
                set root='mduuid/be280dca5a7ce8a36c559211bd692a54'
                linux   /boot/vmlinuz-3.13-1-amd64 
root=UUID=4ee42fef-c2d5-406d-8aec-6832a5eb2e93 ro single 
                set root='mduuid/be280dca5a7ce8a36c559211bd692a54'
                linux   /boot/vmlinuz-3.12-1-amd64 
root=UUID=4ee42fef-c2d5-406d-8aec-6832a5eb2e93 ro  
gfxpayload=1024x768x8,1024x768
                set root='mduuid/be280dca5a7ce8a36c559211bd692a54'
                linux   /boot/vmlinuz-3.12-1-amd64 
root=UUID=4ee42fef-c2d5-406d-8aec-6832a5eb2e93 ro single 
                set root='mduuid/be280dca5a7ce8a36c559211bd692a54'
                linux   /boot/vmlinuz-3.2.0-4-amd64 
root=UUID=4ee42fef-c2d5-406d-8aec-6832a5eb2e93 ro  
gfxpayload=1024x768x8,1024x768
                set root='mduuid/be280dca5a7ce8a36c559211bd692a54'
                linux   /boot/vmlinuz-3.2.0-4-amd64 
root=UUID=4ee42fef-c2d5-406d-8aec-6832a5eb2e93 ro single 
                set root='mduuid/be280dca5a7ce8a36c559211bd692a54'
                linux   /boot/vmlinuz-2.6.32-5-amd64 
root=UUID=4ee42fef-c2d5-406d-8aec-6832a5eb2e93 ro  
gfxpayload=1024x768x8,1024x768
                set root='mduuid/be280dca5a7ce8a36c559211bd692a54'
                linux   /boot/vmlinuz-2.6.32-5-amd64 
root=UUID=4ee42fef-c2d5-406d-8aec-6832a5eb2e93 ro single 
        set root='mduuid/be280dca5a7ce8a36c559211bd692a54'

--- grub legacy:
kernel          /boot/vmlinuz-2.6.30-2-amd64 root=/dev/md1 ro vga=0x305
kernel          /boot/vmlinuz-2.6.30-2-amd64 root=/dev/md1 ro vga=0x305
kernel          /boot/vmlinuz-2.6.30-2-amd64 root=/dev/md1 ro vga=0x305
kernel          /boot/vmlinuz-2.6.30-2-amd64 root=/dev/md1 ro vga=0x305 
kernel          /boot/vmlinuz-2.6.26-2-amd64 root=/dev/md1 ro vga=0x305 

--- udev:
ii  udev           204-8        amd64        /dev/ and hotplug management daem
31f02091e9d9fc06396df81f4f9e7668  /lib/udev/rules.d/63-md-raid-arrays.rules
ec25c304457feb2f2951160ba551fb6f  /lib/udev/rules.d/64-md-raid-assembly.rules

--- /dev:
brw-rw---- 1 root disk 9, 0 Apr 15 15:33 /dev/md0
brw-rw---- 1 root disk 9, 1 Apr 15 15:33 /dev/md1
brw-rw---- 1 root disk 9, 2 Apr 15 15:33 /dev/md2
brw-rw---- 1 root disk 9, 3 Apr 15 15:33 /dev/md3

/dev/disk/by-id:
total 0
lrwxrwxrwx 1 root root  9 Apr 15 15:33 ata-HDS722525VLAT80_VN69TECFF04A6A -> 
../../sdc
lrwxrwxrwx 1 root root 10 Apr 15 15:33 ata-HDS722525VLAT80_VN69TECFF04A6A-part1 
-> ../../sdc1
lrwxrwxrwx 1 root root 10 Apr 15 15:33 ata-HDS722525VLAT80_VN69TECFF04A6A-part2 
-> ../../sdc2
lrwxrwxrwx 1 root root  9 Apr 15 15:33 ata-PLEXTOR_DVDR_PX-716AL_127960 -> 
../../sr0
lrwxrwxrwx 1 root root  9 Apr 15 15:33 ata-ST31000528AS_9VP10EMS -> ../../sda
lrwxrwxrwx 1 root root 10 Apr 15 15:33 ata-ST31000528AS_9VP10EMS-part1 -> 
../../sda1
lrwxrwxrwx 1 root root 10 Apr 15 15:33 ata-ST31000528AS_9VP10EMS-part2 -> 
../../sda2
lrwxrwxrwx 1 root root 10 Apr 15 15:33 ata-ST31000528AS_9VP10EMS-part3 -> 
../../sda3
lrwxrwxrwx 1 root root 10 Apr 15 15:33 ata-ST31000528AS_9VP10EMS-part5 -> 
../../sda5
lrwxrwxrwx 1 root root 10 Apr 15 15:33 ata-ST31000528AS_9VP10EMS-part6 -> 
../../sda6
lrwxrwxrwx 1 root root 10 Apr 15 15:33 ata-ST31000528AS_9VP10EMS-part7 -> 
../../sda7
lrwxrwxrwx 1 root root 10 Apr 15 15:33 ata-ST31000528AS_9VP10EMS-part8 -> 
../../sda8
lrwxrwxrwx 1 root root 10 Apr 15 15:33 ata-ST31000528AS_9VP10EMS-part9 -> 
../../sda9
lrwxrwxrwx 1 root root  9 Apr 15 15:33 ata-ST31000528AS_9VP110NJ -> ../../sdb
lrwxrwxrwx 1 root root 10 Apr 15 15:33 ata-ST31000528AS_9VP110NJ-part1 -> 
../../sdb1
lrwxrwxrwx 1 root root 10 Apr 15 15:33 ata-ST31000528AS_9VP110NJ-part2 -> 
../../sdb2
lrwxrwxrwx 1 root root 10 Apr 15 15:33 ata-ST31000528AS_9VP110NJ-part3 -> 
../../sdb3
lrwxrwxrwx 1 root root 10 Apr 15 15:33 ata-ST31000528AS_9VP110NJ-part5 -> 
../../sdb5
lrwxrwxrwx 1 root root 10 Apr 15 15:33 ata-ST31000528AS_9VP110NJ-part6 -> 
../../sdb6
lrwxrwxrwx 1 root root 10 Apr 15 15:33 ata-ST31000528AS_9VP110NJ-part7 -> 
../../sdb7
lrwxrwxrwx 1 root root 10 Apr 15 15:33 ata-ST31000528AS_9VP110NJ-part8 -> 
../../sdb8
lrwxrwxrwx 1 root root 10 Apr 15 15:33 ata-ST31000528AS_9VP110NJ-part9 -> 
../../sdb9
lrwxrwxrwx 1 root root  9 Apr 15 15:33 md-name-tucano.isti.cnr.it:3 -> ../../md3
lrwxrwxrwx 1 root root  9 Apr 15 15:33 
md-uuid-4baa4e6b:68c69979:3123a8df:80f7c2a2 -> ../../md3
lrwxrwxrwx 1 root root  9 Apr 15 15:33 
md-uuid-81410e46:c10c6835:3a5bc96f:db554bf5 -> ../../md2
lrwxrwxrwx 1 root root  9 Apr 15 15:33 
md-uuid-bcf2d090:8e2cb854:f5478e52:699d5718 -> ../../md0
lrwxrwxrwx 1 root root  9 Apr 15 15:33 
md-uuid-be280dca:5a7ce8a3:6c559211:bd692a54 -> ../../md1
lrwxrwxrwx 1 root root  9 Apr 15 15:33 scsi-SATA_HDS722525VLAT80_VN69TECFF04A6A 
-> ../../sdc
lrwxrwxrwx 1 root root 10 Apr 15 15:33 
scsi-SATA_HDS722525VLAT80_VN69TECFF04A6A-part1 -> ../../sdc1
lrwxrwxrwx 1 root root 10 Apr 15 15:33 
scsi-SATA_HDS722525VLAT80_VN69TECFF04A6A-part2 -> ../../sdc2
lrwxrwxrwx 1 root root  9 Apr 15 15:33 scsi-SATA_ST31000528AS_9VP10EMS -> 
../../sda
lrwxrwxrwx 1 root root 10 Apr 15 15:33 scsi-SATA_ST31000528AS_9VP10EMS-part1 -> 
../../sda1
lrwxrwxrwx 1 root root 10 Apr 15 15:33 scsi-SATA_ST31000528AS_9VP10EMS-part2 -> 
../../sda2
lrwxrwxrwx 1 root root 10 Apr 15 15:33 scsi-SATA_ST31000528AS_9VP10EMS-part3 -> 
../../sda3
lrwxrwxrwx 1 root root 10 Apr 15 15:33 scsi-SATA_ST31000528AS_9VP10EMS-part5 -> 
../../sda5
lrwxrwxrwx 1 root root 10 Apr 15 15:33 scsi-SATA_ST31000528AS_9VP10EMS-part6 -> 
../../sda6
lrwxrwxrwx 1 root root 10 Apr 15 15:33 scsi-SATA_ST31000528AS_9VP10EMS-part7 -> 
../../sda7
lrwxrwxrwx 1 root root 10 Apr 15 15:33 scsi-SATA_ST31000528AS_9VP10EMS-part8 -> 
../../sda8
lrwxrwxrwx 1 root root 10 Apr 15 15:33 scsi-SATA_ST31000528AS_9VP10EMS-part9 -> 
../../sda9
lrwxrwxrwx 1 root root  9 Apr 15 15:33 scsi-SATA_ST31000528AS_9VP110NJ -> 
../../sdb
lrwxrwxrwx 1 root root 10 Apr 15 15:33 scsi-SATA_ST31000528AS_9VP110NJ-part1 -> 
../../sdb1
lrwxrwxrwx 1 root root 10 Apr 15 15:33 scsi-SATA_ST31000528AS_9VP110NJ-part2 -> 
../../sdb2
lrwxrwxrwx 1 root root 10 Apr 15 15:33 scsi-SATA_ST31000528AS_9VP110NJ-part3 -> 
../../sdb3
lrwxrwxrwx 1 root root 10 Apr 15 15:33 scsi-SATA_ST31000528AS_9VP110NJ-part5 -> 
../../sdb5
lrwxrwxrwx 1 root root 10 Apr 15 15:33 scsi-SATA_ST31000528AS_9VP110NJ-part6 -> 
../../sdb6
lrwxrwxrwx 1 root root 10 Apr 15 15:33 scsi-SATA_ST31000528AS_9VP110NJ-part7 -> 
../../sdb7
lrwxrwxrwx 1 root root 10 Apr 15 15:33 scsi-SATA_ST31000528AS_9VP110NJ-part8 -> 
../../sdb8
lrwxrwxrwx 1 root root 10 Apr 15 15:33 scsi-SATA_ST31000528AS_9VP110NJ-part9 -> 
../../sdb9
lrwxrwxrwx 1 root root  9 Apr 15 15:33 usb-USB2.0_CBO_CardReader_1234609-0:1 -> 
../../sde
lrwxrwxrwx 1 root root  9 Apr 15 15:33 usb-USB2.0_CF_CardReader_1234609-0:0 -> 
../../sdd
lrwxrwxrwx 1 root root  9 Apr 15 15:33 wwn-0x5000c50015448c73 -> ../../sda
lrwxrwxrwx 1 root root 10 Apr 15 15:33 wwn-0x5000c50015448c73-part1 -> 
../../sda1
lrwxrwxrwx 1 root root 10 Apr 15 15:33 wwn-0x5000c50015448c73-part2 -> 
../../sda2
lrwxrwxrwx 1 root root 10 Apr 15 15:33 wwn-0x5000c50015448c73-part3 -> 
../../sda3
lrwxrwxrwx 1 root root 10 Apr 15 15:33 wwn-0x5000c50015448c73-part5 -> 
../../sda5
lrwxrwxrwx 1 root root 10 Apr 15 15:33 wwn-0x5000c50015448c73-part6 -> 
../../sda6
lrwxrwxrwx 1 root root 10 Apr 15 15:33 wwn-0x5000c50015448c73-part7 -> 
../../sda7
lrwxrwxrwx 1 root root 10 Apr 15 15:33 wwn-0x5000c50015448c73-part8 -> 
../../sda8
lrwxrwxrwx 1 root root 10 Apr 15 15:33 wwn-0x5000c50015448c73-part9 -> 
../../sda9
lrwxrwxrwx 1 root root  9 Apr 15 15:33 wwn-0x5000c50015493eb3 -> ../../sdb
lrwxrwxrwx 1 root root 10 Apr 15 15:33 wwn-0x5000c50015493eb3-part1 -> 
../../sdb1
lrwxrwxrwx 1 root root 10 Apr 15 15:33 wwn-0x5000c50015493eb3-part2 -> 
../../sdb2
lrwxrwxrwx 1 root root 10 Apr 15 15:33 wwn-0x5000c50015493eb3-part3 -> 
../../sdb3
lrwxrwxrwx 1 root root 10 Apr 15 15:33 wwn-0x5000c50015493eb3-part5 -> 
../../sdb5
lrwxrwxrwx 1 root root 10 Apr 15 15:33 wwn-0x5000c50015493eb3-part6 -> 
../../sdb6
lrwxrwxrwx 1 root root 10 Apr 15 15:33 wwn-0x5000c50015493eb3-part7 -> 
../../sdb7
lrwxrwxrwx 1 root root 10 Apr 15 15:33 wwn-0x5000c50015493eb3-part8 -> 
../../sdb8
lrwxrwxrwx 1 root root 10 Apr 15 15:33 wwn-0x5000c50015493eb3-part9 -> 
../../sdb9

/dev/disk/by-label:
total 0
lrwxrwxrwx 1 root root 10 Apr 15 15:33 backup -> ../../sdc1
lrwxrwxrwx 1 root root  9 Apr 15 15:33 Debian -> ../../md1
lrwxrwxrwx 1 root root 10 Apr 15 15:33 haroot -> ../../sdc2
lrwxrwxrwx 1 root root  9 Apr 15 15:33 home -> ../../md0
lrwxrwxrwx 1 root root  9 Apr 15 15:33 scratch -> ../../md3
lrwxrwxrwx 1 root root  9 Apr 15 15:33 swap -> ../../md2

/dev/disk/by-path:
total 0
lrwxrwxrwx 1 root root 9 Apr 15 15:33 pci-0000:00:13.2-usb-0:1:1.0-scsi-0:0:0:0 
-> ../../sdd
lrwxrwxrwx 1 root root 9 Apr 15 15:33 pci-0000:00:13.2-usb-0:1:1.0-scsi-0:0:0:1 
-> ../../sde

/dev/disk/by-uuid:
total 0
lrwxrwxrwx 1 root root 10 Apr 15 15:33 19e7c0bc-ab46-451c-9eac-f924e99563f4 -> 
../../sdc2
lrwxrwxrwx 1 root root  9 Apr 15 15:33 4ee42fef-c2d5-406d-8aec-6832a5eb2e93 -> 
../../md1
lrwxrwxrwx 1 root root  9 Apr 15 15:33 64be20c5-8d92-4978-bba7-82e893a3f7fd -> 
../../md3
lrwxrwxrwx 1 root root 10 Apr 15 15:33 87d99b4f-6773-445a-8775-4d88041d40c1 -> 
../../sdc1
lrwxrwxrwx 1 root root  9 Apr 15 15:33 b4a70b2d-d374-400b-8b86-ff5d2d5abbdf -> 
../../md0
lrwxrwxrwx 1 root root 10 Apr 15 15:33 b7d77579-5097-4d4f-b82a-e843c2d49778 -> 
../../sdb3
lrwxrwxrwx 1 root root 10 Apr 15 15:33 cbc904fd-68b5-4d1f-9b36-37be28dbce1d -> 
../../sda3
lrwxrwxrwx 1 root root  9 Apr 15 15:33 db913221-119e-4a0a-b0bd-daae748b1fa8 -> 
../../md2

/dev/md:
total 0

Auto-generated on Tue, 15 Apr 2014 17:10:32 +0200
by mdadm bugscript 3.3-2

*** Reporter, please consider answering these questions, where appropriate ***

   * What led up to the situation?
   * What exactly did you do (or not do) that was effective (or
     ineffective)?
   * What was the outcome of this action?
   * What outcome did you expect instead?

*** End of the template - remove these template lines ***


-- System Information:
Debian Release: jessie/sid
  APT prefers testing
  APT policy: (990, 'testing'), (500, 'testing-proposed-updates'), (101, 
'unstable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 3.12-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=it_IT.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages mdadm depends on:
ii  debconf      1.5.52
ii  initscripts  2.88dsf-51
ii  libc6        2.18-4
ii  lsb-base     4.1+Debian12
ii  makedev      2.3.1-93
ii  udev         204-8

Versions of packages mdadm recommends:
ii  exim4-daemon-light [mail-transport-agent]  4.82-7
ii  module-init-tools                          16-2

mdadm suggests no packages.

-- Configuration Files:
/etc/cron.daily/mdadm changed:
set -eu
MDADM=/sbin/mdadm
[ -x $MDADM ] || exit 0 # package may be removed but not purged
exec $MDADM --no-sharing --monitor --scan --oneshot

/etc/logcheck/ignore.d.server/mdadm [Errno 13] Permission denied: 
u'/etc/logcheck/ignore.d.server/mdadm'
/etc/logcheck/violations.d/mdadm [Errno 13] Permission denied: 
u'/etc/logcheck/violations.d/mdadm'

-- debconf information:
  mdadm/initrdstart_msg_errconf:
  mdadm/autocheck: true
* mdadm/initrdstart: /dev/md1
  mdadm/mail_to: root
  mdadm/start_daemon: true
  mdadm/initrdstart_msg_intro:
  mdadm/initrdstart_msg_errexist:
  mdadm/initrdstart_notinconf: false
  mdadm/initrdstart_msg_errblock:
  mdadm/initrdstart_msg_errmd:
* mdadm/autostart: true

--- End Message ---
--- Begin Message ---
Hi Francesco,

> this is a description of a problem I encountered and how I solved it.

I am not sure that I would have used the --grow command to expand the
size an existing device. I probably would have used lvm2 to span two
md devices.

Either way, you filed an interesting bug report but it does not
contain any actionable items for the Debian maintainer of this
software. Closing this bug.

Please reopen or file a new bug if you can track down what happened,
so we can fix it together.

Kind regards
Felix Lechner

--- End Message ---

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