Ravi, Thanks for the tips. When I run a volume status: gluster> volume status test-a Status of volume: test-a Gluster process Port Online Pid ------------------------------------------------------------------------------ Brick 10.250.4.63:/localmnt/g1lv2 49152 Y 8072 Brick 10.250.4.65:/localmnt/g2lv2 49152 Y 3403 Brick 10.250.4.63:/localmnt/g1lv3 49153 Y 8081 Brick 10.250.4.65:/localmnt/g2lv3 49153 Y 3410 Brick 10.250.4.63:/localmnt/g1lv4 49154 Y 8090 Brick 10.250.4.65:/localmnt/g2lv4 49154 Y 3417 Brick 10.250.4.63:/localmnt/g1lv5 49155 Y 8099 Brick 10.250.4.65:/localmnt/g2lv5 N/A N N/A Brick 10.250.4.63:/localmnt/g1lv1 49156 Y 8576 Brick 10.250.4.65:/localmnt/g2lv1 49156 Y 3431 NFS Server on localhost 2049 Y 3440 Self-heal Daemon on localhost N/A Y 3445 NFS Server on 10.250.4.63 2049 Y 8586 Self-heal Daemon on 10.250.4.63 N/A Y 8593 There are no active volume tasks -- Attempting to start the volume results in: gluster> volume start test-a force volume start: test-a: failed: Failed to get extended attribute trusted.glusterfs.volume-id for brick dir /localmnt/g2lv5. Reason : No data available -- It doesn't like when I try to fire off a heal either: gluster> volume heal test-a Launching Heal operation on volume test-a has been unsuccessful -- Although that did lead me to this: gluster> volume heal test-a info Gathering Heal info on volume test-a has been successful Brick 10.250.4.63:/localmnt/g1lv2 Number of entries: 0 Brick 10.250.4.65:/localmnt/g2lv2 Number of entries: 0 Brick 10.250.4.63:/localmnt/g1lv3 Number of entries: 0 Brick 10.250.4.65:/localmnt/g2lv3 Number of entries: 0 Brick 10.250.4.63:/localmnt/g1lv4 Number of entries: 0 Brick 10.250.4.65:/localmnt/g2lv4 Number of entries: 0 Brick 10.250.4.63:/localmnt/g1lv5 Number of entries: 0 Brick 10.250.4.65:/localmnt/g2lv5 Status: Brick is Not connected Number of entries: 0 Brick 10.250.4.63:/localmnt/g1lv1 Number of entries: 0 Brick 10.250.4.65:/localmnt/g2lv1 Number of entries: 0 -- So perhaps I need to re-connect the brick? Cheers, Dave On Fri, Aug 16, 2013 at 12:43 AM, Ravishankar N <ravishankar at redhat.com>wrote: > On 08/15/2013 10:05 PM, David Gibbons wrote: > > Hi There, > > I'm currently testing Gluster for possible production use. I haven't > been able to find the answer to this question in the forum arch or in the > public docs. It's possible that I don't know which keywords to search for. > > Here's the question (more details below): let's say that one of my > bricks "fails" -- *not* a whole node failure but a single brick failure > within the node. How do I replace a single brick on a node and force a sync > from one of the replicas? > > I have two nodes with 5 bricks each: > gluster> volume info test-a > > Volume Name: test-a > Type: Distributed-Replicate > Volume ID: e8957773-dd36-44ae-b80a-01e22c78a8b4 > Status: Started > Number of Bricks: 5 x 2 = 10 > Transport-type: tcp > Bricks: > Brick1: 10.250.4.63:/localmnt/g1lv2 > Brick2: 10.250.4.65:/localmnt/g2lv2 > Brick3: 10.250.4.63:/localmnt/g1lv3 > Brick4: 10.250.4.65:/localmnt/g2lv3 > Brick5: 10.250.4.63:/localmnt/g1lv4 > Brick6: 10.250.4.65:/localmnt/g2lv4 > Brick7: 10.250.4.63:/localmnt/g1lv5 > Brick8: 10.250.4.65:/localmnt/g2lv5 > Brick9: 10.250.4.63:/localmnt/g1lv1 > Brick10: 10.250.4.65:/localmnt/g2lv1 > > I formatted 10.250.4.65:/localmnt/g2lv5 (to simulate a "failure"). What > is the next step? I have tried various combinations of removing and > re-adding the brick, replacing the brick, etc. I read in a previous message > to this list that replace-brick was for planned changes which makes sense, > so that's probably not my next step. > > You must first check if the 'formatted' brick 10.250.4.65:/localmnt/g2lv5 > is online using the `gluster volume status` command. If not start the > volume using `gluster volume start <VOLNAME>force`. You can then use the > gluster volume heal command which would copy the data from the other > replica brick into your formatted brick. > Hope this helps. > -Ravi > > > Cheers, > Dave > > > _______________________________________________ > Gluster-users mailing listGluster-users at gluster.orghttp://supercolony.gluster.org/mailman/listinfo/gluster-users > > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://supercolony.gluster.org/pipermail/gluster-users/attachments/20130816/00c31469/attachment.html>
