[DRBD-user] Before swap to DRBD

Sam Przyswa samp at arial-concept.com
Wed Oct 27 14:46:31 CEST 2010


Le 27/10/2010 14:40, Thomas Baumann a écrit :
> Hi,
>
> If you extend /dev/mapper/vg_foo-bar, then nothing changes, as you have to
> resize the DRBD which could be done online if in connected state.
> If you have LVM on top  you have to extend the PV with the pvresize command,
> and after this you may resize the filesystem on top.
> If you have a normal Filesystem on top, you should resize this.
>    

Ok, thanks a lot !

Sam.


> -----Ursprüngliche Nachricht-----
> Von: drbd-user-bounces at lists.linbit.com
> [mailto:drbd-user-bounces at lists.linbit.com] Im Auftrag von Sam Przyswa
> Gesendet: Mittwoch, 27. Oktober 2010 14:36
> An: Mark Watts
> Cc: drbd-user at lists.linbit.com
> Betreff: Re: [DRBD-user] Before swap to DRBD
>
> Le 27/10/2010 11:12, Mark Watts a écrit :
>    
>> -----BEGIN PGP SIGNED MESSAGE-----
>> Hash: SHA1
>>
>>
>>
>>      
>>> Thanks a lot for your reply, but what you mean by "Using an LVM
>>> volume for DRBD backing store" I'm very interested !
>>>
>>>        
>> For example:
>>
>> resource r0 {
>>     on alice {
>>       device    /dev/drbd1;
>>       disk      /dev/mapper/vg_foo-bar;
>>       address   10.1.1.31:7789;
>>       meta-disk internal;
>>     }
>>     on bob {
>>       device    /dev/drbd1;
>>       disk      /dev/mapper/vg_foo-bar;
>>       address   10.1.1.32:7789;
>>       meta-disk internal;
>>     }
>> }
>>
>> Where /dev/mapper/vg_foo-bar is an LVM Logical Volume.
>>
>> This is in contrast to using /drv/drbd1 as the basis for an LVM
>> Physical Volume (ie: doing "pvcreate /dev/drbd1").
>>
>>      
> Yes, thanks !
>
> Now I understand the difference but in this case what about if I extend the
> size of the LVM logical volume "disk /dev/mapper/vg_foo_bar" ?
>
> Sam.
>
>
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