switch tst* EBS from magnetic to SSD

RESOLVED FIXED

Status

Release Engineering
General Automation
RESOLVED FIXED
3 years ago
3 years ago

People

(Reporter: (dormant account), Assigned: rail)

Tracking

Firefox Tracking Flags

(Not tracked)

Details

(Reporter)

Description

3 years ago
We are paying more for IOPS on slow magnetic storage than the price diff. Should save us about 30% on ssd bill for these nodes(while being faster).

We seem to break even(at a slight loss) on builders. Can switch to ssd ebs there as we figure out how to further reduce iops and then switch back.
(Reporter)

Comment 1

3 years ago
note even on testers with can experiment with writeout values and possibly switch back to magnetic(though instance storage seems to make more sense as a long term solution)
(Assignee)

Updated

3 years ago
Blocks: 1027258
(Assignee)

Comment 2

3 years ago
I made a snapshot for /dev/sda1 on tst-linux64-ec2-001, created a gp2 type volume in the same AZ, detached the old one and attached the new one to tst-linux64-ec2-001.

Let's see how it behaves at: https://secure.pub.build.mozilla.org/builddata/reports/slave_health/slave.html?name=tst-linux64-ec2-001

I also changed moz-state tag to not-ready to avoid automatic shutdowns.
(Assignee)

Comment 3

3 years ago
So far it took 2 jobs, both worked fine.

I'm going to work it over the weekend.

I don't want to switch to SSD today for all instances since I won't be near computer on the weekend. :)
(Reporter)

Updated

3 years ago
Blocks: 1028341
(Assignee)

Comment 4

3 years ago
http://hg.mozilla.org/build/cloud-tools/rev/ac4154a9d7d6

Soon all of tst spot instances will be using gp2 volume type.
(Assignee)

Comment 5

3 years ago
No issues with these today, closing.
Status: NEW → RESOLVED
Last Resolved: 3 years ago
Resolution: --- → FIXED
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