On 23/05/19 2:40 AM, Alan Orth wrote:
Dear list,
I seem to have gotten into a tricky situation. Today I brought up a
shiny new server with new disk arrays and attempted to replace one
brick of a replica 2 distribute/replicate volume on an older server
using the `replace-brick` command:
# gluster volume replace-brick homes wingu0:/mnt/gluster/homes
wingu06:/data/glusterfs/sdb/homes commit force
The command was successful and I see the new brick in the output of
`gluster volume info`. The problem is that Gluster doesn't seem to be
migrating the data,
`replace-brick` definitely must heal (not migrate) the data. In your
case, data must have been healed from Brick-4 to the replaced Brick-3.
Are there any errors in the self-heal daemon logs of Brick-4's node?
Does Brick-4 have pending AFR xattrs blaming Brick-3? The doc is a bit
out of date. replace-brick command internally does all the setfattr
steps that are mentioned in the doc.
-Ravi
and now the original brick that I replaced is no longer part of the
volume (and a few terabytes of data are just sitting on the old brick):
# gluster volume info homes | grep -E "Brick[0-9]:"
Brick1: wingu4:/mnt/gluster/homes
Brick2: wingu3:/mnt/gluster/homes
Brick3: wingu06:/data/glusterfs/sdb/homes
Brick4: wingu05:/data/glusterfs/sdb/homes
Brick5: wingu05:/data/glusterfs/sdc/homes
Brick6: wingu06:/data/glusterfs/sdc/homes
I see the Gluster docs have a more complicated procedure for replacing
bricks that involves getfattr/setfattr¹. How can I tell Gluster about
the old brick? I see that I have a backup of the old volfile thanks to
yum's rpmsave function if that helps.
We are using Gluster 5.6 on CentOS 7. Thank you for any advice you can
give.
¹
https://docs.gluster.org/en/latest/Administrator%20Guide/Managing%20Volumes/#replace-faulty-brick
--
Alan Orth
[email protected] <mailto:[email protected]>
https://picturingjordan.com
https://englishbulgaria.net
https://mjanja.ch
"In heaven all the interesting people are missing." ―Friedrich Nietzsche
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