FWIW, starting/stopping a volume that is fast doesn't consistently make
it slow. I just tried it again on an older volume... It doesn't make it
slow. I also went back and re-ran the test on test3brick and it isn't
slow any longer. Maybe there is a time lag after stopping/starting a
volume before it becomes "fast".
Either way, stopping/starting a "fast" volume only makes it slow for
some period of time and it doesn't consistently make it slow. I don't
think this is the issue. red-herring.
[root@gfs01bkp /]# gluster volume stop test2brick
Stopping volume will make its data inaccessible. Do you want to
continue? (y/n) y
[root@gfs01bkp /]# gluster volume start test2brick
volume start: test2brick: success
[root@gfs01bkp /]# mount /test2brick
[root@gfs01bkp /]# cd /test2brick
[root@gfs01bkp test2brick]# time tar -xPf boost_1_57_0.tar; time rm -rf
boost_1_57_0
real 1m1.124s
user 0m0.432s
sys 0m3.136s
real 0m16.630s
user 0m0.083s
sys 0m0.570s
#... Retest on test3brick after it has been up after a volume restart
for 20-minutes... Compare this to running the test immediately after a
restart which gave a time of 3.5-minutes.
[root@gfs01bkp test3brick]# time tar -xPf boost_1_57_0.tar; time rm -rf
boost_1_57_0
real 1m17.786s
user 0m0.502s
sys 0m3.278s
real 0m18.103s
user 0m0.101s
sys 0m0.684s
------ Original Message ------
From: "Shyam" <srangana@xxxxxxxxxx>
To: "David F. Robinson" <david.robinson@xxxxxxxxxxxxx>; "Pranith Kumar
Karampuri" <pkarampu@xxxxxxxxxx>; "Justin Clift" <justin@xxxxxxxxxxx>
Cc: "Gluster Devel" <gluster-devel@xxxxxxxxxxx>
Sent: 2/12/2015 11:26:51 AM
Subject: Re: missing files
On 02/12/2015 11:18 AM, David F. Robinson wrote:
Shyam,
You asked me to stop/start the slow volume to see if it fixed the
timing
issue. I stopped/started homegfs_backup (the production volume with
40+
TB) and it didn't make it faster. I didn't stop/start the fast volume
to see if it made it slower. I just did that and sent out an email. I
saw a similar result as Pranith.
Just to be clear even after restart of the slow volume, we see ~19
minutes for the tar to complete, correct?
Versus, on the fast volume it is anywhere between 00:55 - 3:00 minutes,
irrespective of start, fresh create, etc. correct?
Shyam
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