<div dir="ltr"><div class="gmail_extra"><div class="gmail_quote">On Mon, Aug 8, 2016 at 5:24 PM, Joe Julian <span dir="ltr"><<a href="mailto:joe@julianfamily.org" target="_blank">joe@julianfamily.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<div>On 08/08/2016 02:56 PM, David Gossage
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<div class="gmail_quote">On Mon, Aug 8, 2016 at 4:37 PM, David
Gossage <span dir="ltr"><<a href="mailto:dgossage@carouselchecks.com" target="_blank">dgossage@carouselchecks.com</a>></span>
wrote:<br>
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<div>On Mon, Aug 8, 2016 at 4:23 PM, Joe Julian
<span dir="ltr"><<a href="mailto:joe@julianfamily.org" target="_blank">joe@julianfamily.org</a>></span>
wrote:<br>
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<div>On 08/08/2016 01:39 PM, David Gossage
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<div dir="ltr">So now that I have my cluster
on 3.7.14 and sharded and working I am of
course looking for what to break next.
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<div>Currently each of 3 nodes is on a 6
disk (WD Red 1TB) raidz6 (zil on mirrored
ssd), which I am thinking is more
protection than I may need with a 3 way
replica. I was going to one by one change
them to basically raid10 letting it heal
in between.</div>
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<div>Is best way to do that a systemctl stop
glusterd, should I just kill the brick
process to simulate a brick dying, or is
their an actual brick maintenance command?
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Just kill (-15) the brick process. That'll close
the TCP connections and the clients will just go
right on functioning off the remaining replica.
When you format and recreate your filesystem,
it'll be missing the volume-id extended
attributes so to start it you'll need to force
it:<br>
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<div>Also could I just do this from different node?</div>
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<div>getfattr -n trusted.glusterfs.volume-id
/srv/.bricks/www</div>
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<div>Then on node with new raid10 backed disks</div>
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<div>setfattr -n trusted.glusterfs.volume-id -v
'value_from_other_brick' /srv/.bricks/www<br>
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Sure, but that's a lot more keystrokes and a lot more potential for
human error.<br></div></blockquote><div><br></div><div>So far working on test machine. my one vm still plodding away no packet loss</div><div><br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div bgcolor="#FFFFFF" text="#000000">
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gluster volume start $volname start force<br>
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<div>If I left volume started when brick process is
killed and clients are still (in theory) connected
to volume wouldn't that just give me an error that
volume is already started?</div>
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<div>Likely I would shut down the volume and do
downtime for this anyway though letting heals go
on with VM's off.</div>
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<div>If /etc/glusterfs is unchanged and
/var/lib/glusterd is unchanged will doing
a heal full after reboot or restarting
glusterd take care of everything if I
recreate the expected brick path first?</div>
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Once started, perform a full heal to
re-replicate.<br>
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<div>Are the improvements in 3.8 for
sharding significant enough I should first
look at updating to 3.8.2 when released in
few days?</div>
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Yes.<br>
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<div dir="ltr"><span><font color="#888888"><span style="color:rgb(0,0,0)"><b><i>David
Gossage</i></b></span><font><i><span style="color:rgb(51,51,51)"><b><br>
</b></span></i></font></font></span>
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