Re: Disk /dev/md6 doesn't contain valid partition table
In addition,
"cat /etc/fstab":
# /etc/fstab: static file system information.
#
# <file system> <mount point> <type> <options> <dump> <pass>
proc /proc proc defaults 0 0
/dev/md2 / ext3 defaults,errors=remount-ro 0 1
/dev/md0 /boot ext3 defaults 0 2
/dev/md6 /home ext3 defaults 0 2
/dev/md5 /tmp ext3 defaults 0 2
/dev/md3 /usr ext3 defaults 0 2
/dev/md4 /var ext3 defaults 0 2
/dev/md1 none swap sw 0 0
/dev/hda /media/cdrom0 udf,iso9660 user,noauto 0 0
/dev/fd0 /media/floppy0 auto rw,user,noauto 0 0
=====
file system "ext3"
=====
Filesystem Size Used Avail Use% Mounted on
/dev/md2 14G 1.4G 12G 11% /
tmpfs 12G 0 12G 0% /lib/init/rw
udev 10M 128K 9.9M 2% /dev
tmpfs 12G 0 12G 0% /dev/shm
/dev/md0 2.8G 103M 2.6G 4% /boot
/dev/md6 97G 1.1G 91G 2% /home
/dev/md5 1.8G 33M 1.7G 2% /tmp
/dev/md3 14G 6.6G 6.6G 50% /usr
======
What I am unable to documante from commands, is the presence of directory
/opt
where a non-GNU compiler and its math libraries are installed. The
root directory reads:
bin
boot
cdrom
dev
emul
etc
home
initrd
initrd.img
initrd.img.old
lib
lib32
lib64
lost+found
media
mnt
opt
proc
root
sbin
opt
proc
root
sbin
selinux
srv
sys
tmp
usr
var
vmlinuz
vmlinuz.old
==========
/dev/md4 2.8G 1.6G 1.1G 59% /var
On Wed, Oct 29, 2008 at 8:24 AM, Francesco Pietra <chiendarret@gmail.com> wrote:
> On Wed, Oct 29, 2008 at 7:06 AM, Douglas A. Tutty <dtutty@vianet.ca> wrote:
>> On Wed, Oct 29, 2008 at 05:44:31AM +0100, Francesco Pietra wrote:
>>> Major mistake (shutting down the ups unit) while doing a parallel
>>> computation on all 8 processors (UMA-type machine amd64 lenny with
>>> raid 1 two disks).
>>>
>>> On restarting the machine and the computation,
>>>
>>> "fdisk -l" showed
>>> "Disk /dev/md6 doesn't contain a valid partition table"
>>>
>>>
>>> "df -h" showed
>>> 97G 1.1G 91G 2% /home
>>> (which should have been ca 70% used).
>>>
>>> All other partitions were OK, as they should be.
>>
>> It would help us to follow if you provided a map of device to
>> mount-point since, e.g. whe don't know what device is /home.
>
> As from my raid1 setup documantation:
>
> md 6 is /home/francesco/
>
> md5 is /tmp
>
> Any command to check the above from the present status?
> ====
> In present status;
>
> "cat /proc/mdstat:
> Personalities : [raid1]
> md6 : active raid1 sda8[0] sdb8[1]
> 102341952 blocks [2/2] [UU]
>
> md5 : active raid1 sda7[0] sdb7[1]
> 1951744 blocks [2/2] [UU]
>
> md4 : active raid1 sda6[0] sdb6[1]
> 2931712 blocks [2/2] [UU]
>
> md3 : active raid1 sda5[0] sdb5[1]
> 14651136 blocks [2/2] [UU]
>
> md1 : active(auto-read-only) raid1 sda2[0] sdb2[1]
> 6835584 blocks [2/2] [UU]
>
> md0 : active raid1 sda1[0] sdb1[1]
> 2931712 blocks [2/2] [UU]
>
> md2 : active raid1 sda3[0] sdb3[1]
> 14651200 blocks [2/2] [UU]
>
> unused devices: <none>
> =========
> "fdisk -l":
> Disk /dev/sda: 150.0 GB, 150039945216 bytes
> 255 heads, 63 sectors/track, 18241 cylinders
> Units = cylinders of 16065 * 512 = 8225280 bytes
> Disk identifier: 0x0009e776
>
> Device Boot Start End Blocks Id System
> /dev/sda1 * 1 365 2931831 fd Linux raid autodetect
> /dev/sda2 366 1216 6835657+ fd Linux raid autodetect
> /dev/sda3 1217 3040 14651280 fd Linux raid autodetect
> /dev/sda4 3041 18213 121877122+ 5 Extended
> /dev/sda5 3041 4864 14651248+ fd Linux raid autodetect
> /dev/sda6 4865 5229 2931831 fd Linux raid autodetect
> /dev/sda7 5230 5472 1951866 fd Linux raid autodetect
> /dev/sda8 5473 18213 102342051 fd Linux raid autodetect
>
> Disk /dev/sdb: 150.0 GB, 150039945216 bytes
> 255 heads, 63 sectors/track, 18241 cylinders
> Units = cylinders of 16065 * 512 = 8225280 bytes
> Disk identifier: 0x000b05ba
>
> Device BootDisk /dev/md2 doesn't contain a valid partition table
> Disk /dev/md0 doesn't contain a valid partition table
> Start End Blocks Id System
> /dev/sdb1 * 1 365 2931831 fd Linux raid autodetect
> /dev/sdb2 366 1216 6835657+ fd Linux raid autodetect
> /dev/sdb3 1217 3040 14651280 fd Linux raid autodetect
> /dev/sdb4 3041 18213 121877122+ 5 Extended
> /dev/sdb5 3041 4864 14651248+ fd Linux raid autodetect
> /dev/sdb6 4865 5229 2931831 fd Linux raid autodetect
> /dev/sdb7 5230 5472 1951866 fd Linux raid autodetect
> /dev/sdb8 5473 18213 102342051 fd Linux raid autodetect
>
> Disk /dev/md2: 15.0 GB, 15002828800 bytes
> 2 heads, 4 sectors/track, 3662800 cylinders
> Units = cylinders of 8 * 512 = 4096 bytes
> Disk identifier: 0x00000000
>
>
> Disk /dev/md0: 3002 MB, 3002073088 bytes
> 2 heads, 4 sectors/track, 732928 cylinders
> Units = cylinders of 8 * 512 = 4096 bytes
> Disk identifier: 0x00000000
>
>
> Disk /dev/md1: 6999 MB, 6999638016 bytes
> 2 heads,Disk /dev/md1 doesn't contain a valid partition table
> Disk /dev/md3 doesn't contain a valid partition table
> Disk /dev/md4 doesn't contain a valid partition table
> Disk /dev/md5 doesn't contain a valid partition table
> Disk /dev/md6 doesn't contain a valid partition table
> 4 sectors/track, 1708896 cylinders
> Units = cylinders of 8 * 512 = 4096 bytes
> Disk identifier: 0x00000000
>
>
> Disk /dev/md3: 15.0 GB, 15002763264 bytes
> 2 heads, 4 sectors/track, 3662784 cylinders
> Units = cylinders of 8 * 512 = 4096 bytes
> Disk identifier: 0x00000000
>
>
> Disk /dev/md4: 3002 MB, 3002073088 bytes
> 2 heads, 4 sectors/track, 732928 cylinders
> Units = cylinders of 8 * 512 = 4096 bytes
> Disk identifier: 0x00000000
>
>
> Disk /dev/md5: 1998 MB, 1998585856 bytes
> 2 heads, 4 sectors/track, 487936 cylinders
> Units = cylinders of 8 * 512 = 4096 bytes
> Disk identifier: 0x00000000
>
>
> Disk /dev/md6: 104.7 GB, 104798158848 bytes
> 2 heads, 4 sectors/track, 25585488 cylinders
> Units = cylinders of 8 * 512 = 4096 bytes
> Disk identifier: 0x00000000
> ===================
>
>
>>
>>> "top -i" showed
>>> all 8 instances fo the parallel procedure
>>> md6_resync (CPU% 6)
>>> md5_resync (CPU% 0)
>>> kjournald
>>>
>>>
>>> After some time md6_resync, md5_resync, kjournald disappeared, leaving
>>> only the 8 parallel procedures.
>>>
>>> Commanding "cat density6.out" the parallel procedure seems to work
>>> regularly, confirmed by "la -l" which shows all files (some as large
>>> as 100MB) for the present computation and the 5 analogous computations
>>> already carried out (of these five computations I had scp sent a copy
>>> to my desktop).
>>>
>>> Where are the data for the current 6th computation being stored?
>>>
>>> The computer was then shutdown and restarted
>>>
>>> df -h output as above.
>>>
>>> fdisk -l
>>> Neither /dev/md6 nor /dev/md5 have a valid partition table.
>>>
>>> cd to my home shows all directories and files for work (in my home
>>> only data from computations, all applications installed in
>>> /usr/local).
>>>
>>> What could I do to set up the system in order before resuming the computation?
>>
>>
>> I don't suppose that you kept a copy of your partition table as part of
>> your backup script? e.g. /sbin/sfdisk -d <device>?
>
> Unfortunately not. I take notice of this for the future
>
> Thanks
> francesco
>>
>> If so, you can write it back.
>>
>> Doug.
>>
>>
>> --
>> To UNSUBSCRIBE, email to debian-amd64-REQUEST@lists.debian.org
>> with a subject of "unsubscribe". Trouble? Contact listmaster@lists.debian.org
>>
>>
>
Reply to: