Bug#607375: mdadm: -e 1 generates superblock 1.2 while manpage says 1.0

Hermann Lauer Hermann.Lauer at iwr.uni-heidelberg.de
Fri Dec 17 15:23:54 UTC 2010 

Package: mdadm
Version: 3.1.4-1+8efb9d1
Severity: normal

mdadm --create -e 1 should generate an superblock 1.0 according to the manpage,
but instead generated an 1.2 superblock here. Who is right ?

-- Package-specific info:

WARNING:
  the following output was not generated by the root user. If you can, please
  replace the following up until "-- System Information:" with the output of
    /usr/share/bug/mdadm/script 3>&1
  run as root. Thanks!

--- mdadm.conf
DEVICE partitions
CREATE owner=root group=disk mode=0660 auto=yes
HOMEHOST <system>
MAILADDR root
ARRAY /dev/md0 level=raid1 num-devices=2 auto=md UUID=078321ad:ddb69c28:347b77cc:157de56c

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

--- /proc/mdstat:
Personalities : [raid1] 
md0 : active raid1 sdb1[2] sda1[0]
      7839708 blocks super 1.0 [2/2] [UU]
      
unused devices: <none>

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

   8        0    8891620 sda
   8        1    7839720 sda1
   8        2      51200 sda2
   8        3    8891392 sda3
   9        0    7839708 md0
 259        0    7839708 md0p1
 259        1    7839708 md0p3
   8       16   17921835 sdb
   8       17    7839720 sdb1
   8       18      51200 sdb2
   8       19    8891392 sdb3

--- LVM physical volumes:
LVM does not seem to be used.
--- mount output
/dev/md0 on / type ext3 (rw,errors=remount-ro)
tmpfs on /lib/init/rw type tmpfs (rw,nosuid,mode=0755)
proc on /proc type proc (rw,noexec,nosuid,nodev)
sysfs on /sys type sysfs (rw,noexec,nosuid,nodev)
udev on /dev type tmpfs (rw,mode=0755)
tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev)
devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=620)

--- initrd.img-2.6.32-5-sparc64-smp:
53384 blocks
8f94b9decb269240e739c9c9c95170d7  ./etc/mdadm/mdadm.conf
b10bf5fec88aaf98dfa87d00ee89b1f1  ./sbin/mdadm
361973fb9431eb7f2d54f9a803168939  ./lib/modules/2.6.32-5-sparc64-smp/kernel/drivers/md/multipath.ko
e11a8d6ed74a0dfe7e10e6f982f32768  ./lib/modules/2.6.32-5-sparc64-smp/kernel/drivers/md/linear.ko
8c46240a53bc3fa5b2de05918f5d5f5f  ./lib/modules/2.6.32-5-sparc64-smp/kernel/drivers/md/md-mod.ko
4901e0f7357c51e098ab5cb46f96712b  ./lib/modules/2.6.32-5-sparc64-smp/kernel/drivers/md/raid10.ko
e15ffbc557ef2359cee2d4d741ffb79b  ./lib/modules/2.6.32-5-sparc64-smp/kernel/drivers/md/raid0.ko
9ff8cce710d54037db4da50df08e3743  ./lib/modules/2.6.32-5-sparc64-smp/kernel/drivers/md/raid456.ko
95d2456018418046490d801417063e3b  ./lib/modules/2.6.32-5-sparc64-smp/kernel/drivers/md/raid1.ko
54f9a6a3dff3c57034b89a76a3b1055c  ./lib/modules/2.6.32-5-sparc64-smp/kernel/drivers/md/raid6_pq.ko
f4fbd9099399ab08ba9b9f6c71d77595  ./scripts/local-top/mdadm

--- initrd's /conf/conf.d/md:
MD_HOMEHOST='install1'
MD_DEVPAIRS='/dev/md0:raid1'
MD_LEVELS='raid1'
MD_DEVS=all
MD_MODULES='raid1'

--- /proc/modules:
raid1 18807 1 - Live 0x000000001012c000
md_mod 82984 2 raid1, Live 0x0000000010108000

--- /var/log/syslog:

--- volume detail:
/dev/sda not readable by user.
/dev/sda1 not readable by user.
/dev/sda2 not readable by user.
/dev/sda3 not readable by user.
/dev/sdb not readable by user.
/dev/sdb1 not readable by user.
/dev/sdb2 not readable by user.
/dev/sdb3 not readable by user.

--- /proc/cmdline
root=/dev/md0 rootdelay=10

--- udev:
ii  udev           164-2          /dev/ and hotplug management daemon
4a574fcd059040d33ea18a8aa605a184  /lib/udev/rules.d/64-md-raid.rules

--- /dev:
brw-rw---- 1 root disk   9,  0 Dec 15 13:46 /dev/md0
brw-rw---- 1 root disk 259,  0 Dec 15 13:46 /dev/md0p1
brw-rw---- 1 root disk 259,  1 Dec 15 13:46 /dev/md0p3
crw------- 1 root root  10, 62 Dec 15 13:46 /dev/mdesc

/dev/disk/by-id:
total 0
lrwxrwxrwx 1 root root  9 Dec 15 13:46 md-name-install1:0 -> ../../md0
lrwxrwxrwx 1 root root 11 Dec 15 13:46 md-name-install1:0-part1 -> ../../md0p1
lrwxrwxrwx 1 root root 11 Dec 15 13:46 md-name-install1:0-part3 -> ../../md0p3
lrwxrwxrwx 1 root root  9 Dec 15 13:46 md-uuid-078321ad:ddb69c28:347b77cc:157de56c -> ../../md0
lrwxrwxrwx 1 root root 11 Dec 15 13:46 md-uuid-078321ad:ddb69c28:347b77cc:157de56c-part1 -> ../../md0p1
lrwxrwxrwx 1 root root 11 Dec 15 13:46 md-uuid-078321ad:ddb69c28:347b77cc:157de56c-part3 -> ../../md0p3
lrwxrwxrwx 1 root root  9 Dec 15 14:04 scsi-SSEAGATE_ST318404LC_3BT1EZ3J00002111GD11 -> ../../sdb
lrwxrwxrwx 1 root root 10 Dec 15 14:06 scsi-SSEAGATE_ST318404LC_3BT1EZ3J00002111GD11-part1 -> ../../sdb1
lrwxrwxrwx 1 root root 10 Dec 15 14:04 scsi-SSEAGATE_ST318404LC_3BT1EZ3J00002111GD11-part2 -> ../../sdb2
lrwxrwxrwx 1 root root  9 Dec 15 13:46 scsi-SSEAGATE_ST39173WC_LM41660300007849T82T -> ../../sda
lrwxrwxrwx 1 root root 10 Dec 15 13:46 scsi-SSEAGATE_ST39173WC_LM41660300007849T82T-part1 -> ../../sda1
lrwxrwxrwx 1 root root 10 Dec 15 13:46 scsi-SSEAGATE_ST39173WC_LM41660300007849T82T-part2 -> ../../sda2

/dev/disk/by-path:
total 0
lrwxrwxrwx 1 root root  9 Dec 15 13:46 pci-0000:00:02.0-scsi-0:0:6:0 -> ../../sr0
lrwxrwxrwx 1 root root  9 Dec 15 13:46 pci-0000:00:03.0-scsi-0:0:0:0 -> ../../sda
lrwxrwxrwx 1 root root 10 Dec 15 13:46 pci-0000:00:03.0-scsi-0:0:0:0-part1 -> ../../sda1
lrwxrwxrwx 1 root root 10 Dec 15 13:46 pci-0000:00:03.0-scsi-0:0:0:0-part2 -> ../../sda2
lrwxrwxrwx 1 root root  9 Dec 15 14:04 pci-0000:00:03.0-scsi-0:0:1:0 -> ../../sdb
lrwxrwxrwx 1 root root 10 Dec 15 14:06 pci-0000:00:03.0-scsi-0:0:1:0-part1 -> ../../sdb1
lrwxrwxrwx 1 root root 10 Dec 15 14:04 pci-0000:00:03.0-scsi-0:0:1:0-part2 -> ../../sdb2

/dev/disk/by-uuid:
total 0
lrwxrwxrwx 1 root root 11 Dec 15 14:06 77c99d5f-ae60-43a6-bef1-9b59d17bcc9a -> ../../md0p1

/dev/md:
total 0

Auto-generated on Fri, 17 Dec 2010 16:19:20 +0100
by mdadm bugscript 3.1.4-1+8efb9d1

-- System Information:
Debian Release: squeeze/sid
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: sparc (sparc64)

Kernel: Linux 2.6.32-5-sparc64-smp (SMP w/1 CPU core)
Locale: LANG=en_US, LC_CTYPE=en_US (charmap=ISO-8859-1)
Shell: /bin/sh linked to /bin/dash

Versions of packages mdadm depends on:
ii  debconf                       1.5.36     Debian configuration management sy
ii  libc6                         2.11.2-7   Embedded GNU C Library: Shared lib
ii  lsb-base                      3.2-23.1   Linux Standard Base 3.2 init scrip
ii  udev                          164-2      /dev/ and hotplug management daemo

Versions of packages mdadm recommends:
ii  module-init-tools             3.12-1     tools for managing Linux kernel mo
ii  nullmailer [mail-transport-ag 1:1.04-1.2 simple relay-only mail transport a

mdadm suggests no packages.

-- debconf information excluded

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