| From: | Chris Angelico <rosuav(at)gmail(dot)com> |
|---|---|
| To: | pgsql-general(at)postgresql(dot)org |
| Subject: | Re: database corruption questions |
| Date: | 2012-10-14 04:02:06 |
| Message-ID: | CAPTjJmoF_iakBwq+maDQs+3N97OjMzUqJ3=r74f5YYZG9m2V_Q@mail.gmail.com |
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| Lists: | pgsql-general |
On Sun, Oct 14, 2012 at 1:13 PM, Craig Ringer <ringerc(at)ringerc(dot)id(dot)au> wrote:
> * Never, ever, ever use cheap SSDs. Use good quality hard drives or (after
> proper testing) high end SSDs. Read the SSD reviews periodically posted on
> this mailing list if considering using SSDs. Make sure the SSD has a
> supercapacitor or other reliable option for flushing its write cache on
> power loss. Always do repeated plug-pull testing when using SSDs.
Interesting. My boss just bought a set of SSDs for some test systems,
with the intention of using them for our next deployment. They're
giving really great performance under pgbench, but we haven't yet done
a plug-pull test on any of them. I'll make sure I do that next week.
Is there an article somewhere about how best to do a plug-pull test?
Or is it as simple as "fire up pgbench, kill the power, bring things
back up, and see if anything isn't working"?
ChrisA
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