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https://issues.apache.org/jira/browse/LUCENE-6614?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14602865#comment-14602865
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Michael McCandless commented on LUCENE-6614:
--------------------------------------------
To verify there really is a bug here (sorry I should have done this in the OP),
I installed Elasticsearch 2.0 pre-release and started it and I see this in its
startup logging output:
{noformat}
[2015-06-26 09:17:54,024][INFO ][env ] [Windeagle] using
[1] data paths, mounts [[/
(/dev/disk/by-uuid/d7b5a26e-bf10-4789-8443-9fd98798c554)]], net usable_space
[364.3gb], net total_space [366.6gb], spins? [possibly], types [ext4]
{noformat}
So indeed the bug is really (spins? should say "no", not "possibly"), but the
plot thickens (maybe?) a bit, because of this /dev/disk/by-uuid/... mount point
... or maybe our existing heuristics deal with this dereference already ...
> IOUtils.spins doesn't work for drives NVMe drives
> -------------------------------------------------
>
> Key: LUCENE-6614
> URL: https://issues.apache.org/jira/browse/LUCENE-6614
> Project: Lucene - Core
> Issue Type: Bug
> Reporter: Michael McCandless
> Assignee: Uwe Schindler
> Priority: Minor
> Fix For: 5.3, Trunk
>
> Attachments: LUCENE-6614.patch
>
>
> NVMe is the faster (than AHCI) protocol for newer SSDs that plug into the
> PCIE bus.
> I just built a new beast box with one of these drives, and the partition is
> named {{/dev/nvme0n1p1}} while the device is {{/dev/nvme0n1}} by Linux - this
> also appears in /sys/block with rotational=0.
> I think [~steve_rowe] also has an NVME drive ...
> [~thetaphi] (who got the box working for me: thank you!!!) has ideas on how
> to fix it!
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