Package: mdadm
Version: 3.1.2-2
Severity: normal
Assuming /dev/md0 is not used, the following commands can be used to
reproduce a segmentation fault in the mdadm command:
# for a in dev0 dev1 dev2 dev3; do dd if=/dev/zero count=256 bs=$((1024*1024))
of="$a"; done
# for a in 0 1 2 3; do losetup /dev/loop$a dev$a; done
# mdadm --create /dev/md0 --level=5 --raid-devices=3 /dev/loop0 /dev/loop1
/dev/loop2
# mkfs -t ext3 /dev/md0 # Just to make it sync
# mdadm --verbose /dev/md0 --add /dev/loop3
# mdadm --verbose --grow /dev/md0 --level=raid6 --raid-devices=4
The output of that last command is:
mdadm level of /dev/md0 changed to raid6
Segmentation fault
And the contents of /proc/mdstat is:
Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4]
[raid10]
md0 : active raid6 loop3[4](S) loop2[3] loop1[1] loop0[0]
523264 blocks super 1.2 level 6, 512k chunk, algorithm 18 [4/3] [UUU_]
unused devices:
/Björn
-- Package-specific info:
--- mdadm.conf
DEVICE partitions
CREATE owner=root group=disk mode=0660 auto=yes
HOMEHOST
MAILADDR root
--- /etc/default/mdadm
INITRDSTART='all'
AUTOSTART=true
AUTOCHECK=true
START_DAEMON=false
DAEMON_OPTIONS="--syslog"
VERBOSE=false
--- /proc/mdstat:
Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4]
[raid10]
md0 : active raid6 loop3[4](S) loop2[3] loop1[1] loop0[0]
523264 blocks super 1.2 level 6, 512k chunk, algorithm 18 [4/3] [UUU_]
unused devices:
--- /proc/partitions:
major minor #blocks name
80 117220824 sda
81 248976 sda1
82 1 sda2
85 97458291 sda5
86 248832 sda6
87 19262464 sda7
2540 97457263 dm-0
2541 95453184 dm-1
25422002944 dm-2
70 262144 loop0
71 262144 loop1
72 262144 loop2
73 262144 loop3
74 262144 loop4
90 523264 md0
--- LVM physical volumes:
PV VG Fmt Attr PSize PFree
/dev/dm-0 braxen lvm2 a- 92.94g0
--- mount output
/dev/dm-1 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)
/dev/sda1 on /boot type ext2 (rw)
overflow on /tmp type tmpfs (rw,size=1048576,mode=1777)
fusectl on /sys/fs/fuse/connections type fusectl (rw)
binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc
(rw,noexec,nosuid,nodev)
--- initrd.img-2.6.34-1-amd64:
cpio: write error: No space left on device
gzip: stdout: Broken pipe
--- initrd's /conf/conf.d/md:
no conf/md file.
--- /proc/modules:
dm_crypt 10736 1 - Live 0xa0268000
raid10 18553 0 - Live 0xa025d000
raid456 45132 1 - Live 0xa024a000
async_raid6_recov 5242 1 raid456, Live 0xa0243000
async_pq 3551 2 raid456,async_raid6_recov, Live 0xa023d000
raid6_pq 77179 2 async_raid6_recov,async_pq, Live 0xa0224000
async_xor 2550 3 raid456,async_raid6_recov,async_pq, Live 0xa021e000
async_memcpy 1206 2 raid456,async_raid6_recov, Live 0xa0211000
async_tx 1774 5 raid456,async_raid6_recov,async_pq,async_xor,async_memcpy, Live
0xa020b000
raid1 18769 0 - Live 0xa020
raid0 5541 0 - Live 0xa01f9000
multipath 6083 0 - Live 0xa01f2000
linear 3495 0 - Live 0xa01ec000
md_mod 78646 6 raid10,raid456,raid1,raid0,multipath,linear, Live
0xa01ce000
dm_mirror 11833 0 - Live 0xa01c5000
dm_region_hash 6816 1 dm_mirror, Live 0xa01bd000
dm_log 7693 2 dm_mirror,dm_region_hash, Live 0xa01b6000
dm_mod 55398 11 dm_crypt,dm_mirror,dm_log, Live 0xa019d000
--- /var/log/syslog:
--- volume detail:
/dev/sda is not recognised by mdadm.
/dev/sda1 is not recognised by mdadm.
/dev/sda2 is not recognised by mdadm.
/dev/sda5 is not recognised by mdadm.
/dev/sda6 is not recognised by mdadm.
/dev/sda7 is not recognised by mdadm.
--- /proc/cmdline
BOOT_IMAGE=/vmlinuz-2.6.34-1-amd64 root=/dev/mapper/braxen-root ro quiet
--- grub2:
set root='(hd0,msdos1)'
set root='(hd0,msdos1)'
set root='(hd0,msdos1)'
set root='(hd0,msdos1)'
linux /vmlinuz-2.6.34-1-amd64 root=/dev/mapper/braxen-root ro quiet
set root='(hd0,msdos1)'
linux /vmlinuz-2.6.34-1-amd64 root=/dev/mapper/braxen-root ro single
set root='(hd0,msdos1)'
linux /vmlinuz-2.6.32-5-amd64 root=/dev/mapper/braxen-root ro quiet
set root='(hd0,msdos1)'
linux /vmlinuz-2.6.32-5-amd64 root=/dev/mapper/braxen-root ro single
set root='(hd0,msdos1)'
set root='(hd0,msdos1)'
set root='(hd0,msdos1)'
set root='(hd0,msdos1)'
set root=(hd0,6)
--- udev:
ii udev 160-1 /
