[Gluster-devel] Decomission a brick

[Anand Avati]

sometime by the end of Q1 or early Q2 of 2008.

avati

2007/12/16, DeeDee Park <deedee6905 at hotmail.com>:
>
>
> I agree. The "read-only" option is confusing and probably a rename to
> clarify its function would be helpful. Would something along the lines of
> "no more additions" be more accurate?
>
> The "hot migrate" is what I'm am looking for. How long before this might
> be available?
>
> ------------------------------
> Date: Sat, 15 Dec 2007 06:45:30 +0530
> From: avati at zresearch.com
> To: deedee6905 at hotmail.com
> Subject: Re: [Gluster-devel] Decomission a brick
> CC: gluster-devel at nongnu.org
>
> > currently you can mark certain subvolumes as read-only in unify to do
> this.
>
> Would then the files be copied to a different brick when the files are
> opened during a "find /mnt/glusterfs"? The feature would be a little more
> than just making it read-only.
>
>
> this is currently not the way it is. even if you mark a subvolume
> 'read-only'  in unify, it only means that new files will not be scheduled
> there. existing files are still modifiable and deletable. (probably
> read-only is not the right option name). if you _really_ want one subvolume
> to be equivalent to mounting the disk with "-o ro", you could either
>
> a. actually mount the backend fs with "-o ro" and still glusterfs is happy
> serving it as-is :)
> b. load the filter xlator in the path of that subvolume (either in b/w
> unify and protocol/client, or in the server spec)
>
> It would have to allow files to get offloaded and removed from the brick
> while still being in service. I assume the read-only would still make it
> possible to have only one copy on the decomissioned brick.
>
>
> the hot migrate should address these issues.
>
> avati
>
>
> --
> If I traveled to the end of the rainbow
> As Dame Fortune did intend,
> Murphy would be there to tell me
> The pot's at the other end.
>
>
> ------------------------------
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>



-- 
If I traveled to the end of the rainbow
As Dame Fortune did intend,
Murphy would be there to tell me
The pot's at the other end.