[Gluster-users] How do I increase volume space on a gluster disperse volume

[Joe Julian]

On 10/10/2016 11:07 AM, Serkan Çoban wrote:
>> Is it like
>> Gluster volume add-brick pdsclust raid1-gb:/data/gfs raid2-gb:/data/gfs raid3-gb:/data/gfs raid5-gb:/data/gfs raid6-gb:/data/gfs raid7-gb:/data/gfs
> Yes the command is like that.
>
>> Besides, Can I have different size of the brick? Such as raid1,2,3 is 20 TB and raid5,6,7 is 40TB?
> You don't want to do that, 20TB from 40TB is wasted. Bricks should be same size.

Similarly to my response to "Rebalancing after adding larger bricks", by 
utilizing the cluster.min-free-disk setting (defaults to 10%) you can, 
at least, ensure that your larger bricks are utilized as needed to 
prevent over filling your smaller bricks should you choose to have 
mismatched sizes.

>
> On Mon, Oct 10, 2016 at 8:42 PM, Leung, Alex (398C)
> <alex.leung at jpl.nasa.gov> wrote:
>> Thanks, but what is the exact command to add-brick?
>>
>> volume add-brick <VOLNAME> [<stripe|replica> <COUNT>] <NEW-BRICK> ...
>>
>> Is it like
>>
>> Gluster volume add-brick pdsclust raid1-gb:/data/gfs raid2-gb:/data/gfs raid3-gb:/data/gfs raid5-gb:/data/gfs raid6-gb:/data/gfs raid7-gb:/data/gfs
>> What is the value of > [<stripe|replica> <COUNT>]?
>>
>> Besides, Can I have different size of the brick? Such as raid1,2,3 is 20 TB and raid5,6,7 is 40TB?
>>
>>
>> Alex Leung
>>
>> On 10/10/16, 7:17 AM, "Vijay Bellur" <vbellur at redhat.com> wrote:
>>
>>      On Thu, Oct 6, 2016 at 11:34 AM, Leung, Alex (398C)
>>      <alex.leung at jpl.nasa.gov> wrote:
>>      > Here is my configuration:
>>      >
>>      >
>>      >
>>      > [root at raid4 ~]# gluster volume info
>>      >
>>      > Volume Name: pdsclust
>>      >
>>      > Type: Disperse
>>      >
>>      > Volume ID: 02629f52-cfe1-4542-8581-21d25e254d39
>>      >
>>      > Status: Started
>>      >
>>      > Number of Bricks: 1 x (4 + 2) = 6
>>      >
>>      > Transport-type: tcp
>>      >
>>      > Bricks:
>>      >
>>      > Brick1: raid4-gb:/data/gfs
>>      >
>>      > Brick2: raid8-gb:/data/gfs
>>      >
>>      > Brick3: raid10-gb:/data/gfs
>>      >
>>      > Brick4: raid12-gb:/data/gfs
>>      >
>>      > Brick5: raid14-gb:/data/gfs
>>      >
>>      > Brick6: raid16-gb:/data/gfs
>>      >
>>      > Options Reconfigured:
>>      >
>>      > performance.readdir-ahead: on
>>      >
>>      > [root at raid4 ~]#
>>      >
>>      >
>>      >
>>      >
>>      >
>>      > How do add-bricks to this disperse volume?
>>      >
>>      > How do I create a sub volume of (4+2) = 6 to make it
>>      >
>>      >
>>      >
>>      > Number of Bricks: 2 x (4 + 2) = 12
>>
>>
>>      You would need to add 6 more bricks to the volume to get to this state.
>>
>>      Regards,
>>      Vijay
>>
>>
>>
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