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[Bug 1507618] [NEW] Potential raid0 data corruption when using trim


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There's a scary issue with fstrim on raid0 and raid10 mdadm devices. It
is fixed upstream in linux/4.1.5-1, linux/3.16.7-ckt17-1, but I can't
find anything in the changelogs for ubuntu.

Here's the links:


I did my amateur analysis by extracting sources for current trusty
kernel 3.13.0-65-generic and current trusty-lts-utopic 3.16.0-50-generic
and looking at files referenced in patches from the Martin K. Petersen's
email, and it appears that 3.16 already has this fix included, and 3.13
is a completely different code base, so it isn't clear whether it is
affected or not.

I've disabled fstrim in cron until I understand the situation better.

Could someone knowledgeable chime in on the status of this on Ubuntu,
specifically Trusty and after?

** Affects: linux-meta (Ubuntu)
     Importance: Undecided
     Assignee: Joseph Salisbury (jsalisbury)
         Status: New

** Tags: bot-comment
Potential raid0 data corruption when using trim
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