On March 16, 2017 4:17:04 AM PDT, Ashish Pandey <aspandey@xxxxxxxxxx> wrote: > > >----- Original Message ----- > >From: "Atin Mukherjee" <atin.mukherjee83@xxxxxxxxx> >To: "Raghavendra Talur" <rtalur@xxxxxxxxxx>, gluster-devel@xxxxxxxxxxx, >gluster-users@xxxxxxxxxxx >Sent: Thursday, March 16, 2017 4:22:41 PM >Subject: Re: [Gluster-devel] Proposal to deprecate >replace-brick for "distribute only" volumes > >Makes sense. > >On Thu, 16 Mar 2017 at 06:51, Raghavendra Talur < rtalur@xxxxxxxxxx > >wrote: > > >Hi, > >In the last few releases, we have changed replace-brick command such >that it can be called only with "commit force" option. When invoked, >this is what happens to the volume: > >a. distribute only volume: the given brick is replaced with a empty >brick with 100% probability of data loss. >b. distribute-replicate: the given brick is replaced with a empty >brick and self heal is triggered. If admin is wise enough to monitor >self heal status before another replace-brick command, data is safe. >c. distribute-disperse: same as above in distribute-replicate > >My proposal is to fully deprecate replace-brick command for >"distribute only" volumes. It should print out a error "The right way >to replace brick for distribute only volume is to add brick, wait for >rebalance to complete and remove brick" and return a "-1". > > > > >It makes sense. >I just don't see any use of add-brick before remove-brick except the >fact that it will >help to keep the overall storage capacity of volume intact . >What is the guarantee that the files on the brick which we want to >replace >would migrate to added brick? > >If a brick, which we want to replace, is healthy and we just want to >replace it then perhaps we should provide >a command to copy those files to new brick and then remove the old >brick. We used to have a command that did just that. It was replace-brick. > > > ><blockquote> >Thoughts? > >Thanks, >Raghavendra Talur >_______________________________________________ >Gluster-users mailing list >Gluster-users@xxxxxxxxxxx >http://lists.gluster.org/mailman/listinfo/gluster-users > ></blockquote> -- Sent from my Android device with K-9 Mail. Please excuse my brevity. _______________________________________________ Gluster-users mailing list Gluster-users@xxxxxxxxxxx http://lists.gluster.org/mailman/listinfo/gluster-users
