[DRBD-user] drbd attach failure - (104) Can not open backing device

Mateusz Kalisiak mk.spare999 at gmail.com
Tue Mar 29 18:55:52 CEST 2011

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


Ok. Problem solved. I removed file system from logical volume (file system
type as well) and shrinked it a little bit (internal meta-data). That
helped.

Regards,
Mateusz

2011/3/28 Mateusz Kalisiak <mk.spare999 at gmail.com>

> Hi,
>
> thanks for replay. I tried to use LV as well (configuration shown below)
> with the same effect.
> What do you mean by "You may have blasted your LV signatures"? This is
> fresh RHEL 5.6 installation,
> the partition layout is almost default (I've just added a few logical
> volumes).
>
>
> # r0.res
> global {
>         usage-count yes;
> }
> common {
>         protocol C;
> }
> resource r0 {
>         on app1 {
>                 device      /dev/drbd0;
>                 disk        /dev/VolGroup00/LogVol02;
>
>                 address     192.168.1.106:7789
>
> ;
>                 meta-disk   internal;
>         }
>         on app2 {
>                 device      /dev/drbd0;
>                 disk        /dev/VolGroup00/LogVol02;
>
>                 address     192.168.1.107:7789
>
> ;
>                 meta-disk   internal;
>         }
> }
>
> Best Regards,
>
> Mateusz
>
>
> 2011/3/28 Felix Frank <ff at mpexnet.de>
>
>> Hi,
>>
>> > Found LVM2 physical volume signature
>> >      8257536 kB data area apparently used
>> >      8281212 kB left usable by current configuration
>> > ...
>> >    Device Boot      Start         End      Blocks   Id  System
>> > /dev/sda1   *           1          13      104391   83  Linux
>> > /dev/sda2              14        1044     8281507+  8e  Linux LVM
>>
>> while this does not necessarily mean that sda2 is an LVM PV, the above
>> message sure indicates that.
>>
>> You may have blasted your LV signatures? I'm not sure.
>>
>> I believe you either want to get rid of LVM here, or use an LV as a
>> backing device (instead of sda2).
>>
>> HTH,
>> Felix
>>
>
>
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