[DRBD-user] Problem with create-md

Steven drbd at savetimehosting.com
Thu Aug 23 19:33:21 CEST 2007


Rene Mayrhofer wrote:
> Hi list,
>
> I am currently using drbd8-utils 8.0.4 under Debian (package from testing, 
> recompiled for etch). For most of the resources, it works without a problem, 
> but for some I get:
>
> [root at jupiter1 ~]# drbdadm create-md xenswap-ns1
> v08 Magic number not found
> v07 Magic number not found
> About to create a new drbd meta data block
> on /dev/mapper/xendomains-swap_ns1.
>
>  ==> This might destroy existing data! <==
>
> Do you want to proceed?
> [need to type 'yes' to confirm] yes
>
> lseek64() failed: Invalid argument
> Command 'drbdmeta /dev/drbd3 v08 /dev/mapper/xendomains-swap_ns1 internal 
> create-md' terminated with exit code 20
> drbdadm aborting
>   

I had the same problem under 8.0.5, I fixed it by using a partition for 
the meta-disk, somewhat the internal option is NOT working on CentOS 5

meta-disk  /dev/DATA/DRBD-META[1];  # that is a LVM LV

instead of:

mata-disk internal;

Also make sure your clocks are synchronised on both hosts (this solved 
other issues as well).

Hope this helps.


> xendomains-swap_ns1 is a LV on LVM:
>
> [root at jupiter1 ~]# lvdisplay xendomains
> ...
>   --- Logical volume ---
>   LV Name                /dev/xendomains/swap_ns1
>   VG Name                xendomains
>   LV UUID                a1kpVJ-CONz-Q2vY-qhBC-uF1N-50ju-hI2C4B
>   LV Write Access        read/write
>   LV Status              available
>   # open                 0
>   LV Size                100.00 MB
>   Current LE             25
>   Segments               1
>   Allocation             inherit
>   Read ahead sectors     0
>   Block device           253:22
> ...
>
> For another - equivalent - LV it worked without a problem.
>
> [root at jupiter1 ~]# lvdisplay xendomains
> ...
>   --- Logical volume ---
>   LV Name                /dev/xendomains/swap_mail1
>   VG Name                xendomains
>   LV UUID                6X4QB9-OUiM-iaEs-Udf7-NbKM-2LdC-G2Ntn0
>   LV Write Access        read/write
>   LV Status              available
>   # open                 0
>   LV Size                600.00 MB
>   Current LE             150
>   Segments               1
>   Allocation             inherit
>   Read ahead sectors     0
>   Block device           253:19
> ...
>
> I can't (easily) update to 8.0.5 at the moment, as there is not (yet) a Debian 
> package that I could just recompile. Any ideas on this issue? Is it supposed 
> to be resolved with 8.0.5? The changelog doesn't indicate that it would.
>
> regards,
> Rene
>
>   
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>
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> drbd-user at lists.linbit.com
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>   


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