[Gluster-devel] attaching tier and starting rebalance daemon in single command, (needed to see all directories)

[Atin Mukherjee]

+ gluster-devel

On 04/23/2015 09:20 AM, Atin Mukherjee wrote:
> 
> 
> On 04/23/2015 01:46 AM, Dan Lambright wrote:
>> KP, Atin,
>>
>> Currently in tiered volumes, we attach a tier and then start the rebalance daemon in separate steps.
>>
>> The problem here is if someone does readdir on the mount point before starting the daemon, they won't see all of the directories. We have not yet done fix-layout to make all directories live on all bricks.
>>
>> What I need to do is combine those two commands into a single one.
>>
>> What I am thinking is, at the cli level, we would first send the attach command, and if it returns successfully, send the "tier start" command.
>>
> The current volume status (not rebalance status) actually issues
> multiple RPCs from CLI, first it gets the volume list from glusterd and
> in issues subsequent RPCs for each volume. I guess you can have a look
> at that implementation if you find this challenging. As far as design
> goes, I don't see that should be a problem, but in that case are we
> going to disable the CLI interface for tier start? Does an admin need to
> trigger tier start explicitly in any particular case?
> 
> ~Atin
>> Do you think it is ok to do this at the cli level (I hope my description makes sense)
>>
>> If not, do you see a better way? We can discuss if necessary..
>>
>> Thanks,
>> Dan  
>>
> 

-- 
~Atin