According to a redhat bug report
(https://bugzilla.redhat.com/show_bug.cgi?id=1310682) it was introduced
by a kernel update from 4.3 to 4.4. So I've testet 4.3.6 from mainline
and it is not effected.
Btw. you probably get this on a live system too and for all hdds (since
root is on the flash
Tested with latest mainline v4.6-rc4-wily, issue still persists.
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
** Tags added: kernel-bug-exists-upstream
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Did this issue start happening after an update/upgrade? Was there a
prior kernel version where you were not having this particular problem?
Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v4.6