[DRBD-user] Wrong size disk

Lars Ellenberg lars.ellenberg at linbit.com
Wed Sep 12 15:36:32 CEST 2007

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.


On Tue, Sep 11, 2007 at 11:02:41AM +0200, Stefano Cislaghi wrote:
> Something strange:

you should reply to the list.

> 
> Disk /dev/sdb: 73.4 GB, 73406611456 bytes
> 128 heads, 32 sectors/track, 35003 cylinders
> Units = cylinders of 4096 * 512 = 2097152 bytes
> 
>    Device Boot      Start         End      Blocks   Id  System
> /dev/sdb1               1        4769     9766896   83  Linux
> /dev/sdb2            4770        9538     9766912   83  Linux
> /dev/sdb3            9539       10016      978944   83  Linux
> 
> Command (m for help): q
> 

your fdisk is broken.
try "sfdisk -d /dev/sdb", to see what sfdisk thinks about this.

finally, the kernel is "always right, by definition",
so if it says sdb1 is sdb3 and vice versa, thats a fact :->

alternatively, you tried to repartition a live disk,
and you only changed the on-disk partition table,
but your kernel refused to re-read the partition table
because they are in use. in that case,
you screwed up, need to reboot, and clean up the mess.
in that case, preferably you should
"chmod -x" /etc/init.d/drbd and .../heartbeat,
before you reboot, and reboot into single user, just in case.

all of this has not too much to do with drbd.

> [root at itsm-sys2a ha.d]# cat /proc/partitions 
> major minor  #blocks  name
> 
>    8    16   71686144 sdb
>    8    17    2932720 sdb1
>    8    18    9766912 sdb2
>    8    19    9766912 sdb3
>    8    20          1 sdb4
>    8    21    1955824 sdb5
>  147     0    2932720 drbd0
>  147     1    9766912 drbd1
> 
> 
> Partition sdb1 should be 9766896 and it's reported for 2932720 blocks.
> Partition sdb3 should be instead 978944 and it's reported for 9766912.

-- 
: Lars Ellenberg                            Tel +43-1-8178292-0  :
: LINBIT Information Technologies GmbH      Fax +43-1-8178292-82 :
: Vivenotgasse 48, A-1120 Vienna/Europe    http://www.linbit.com :
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