linux-ext4 - [Bug 186551] mkfs.ext4 tries to discard sector beyond the end of the device

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Message-ID: <bug-186551-13602-Ef3ca9Oc9e@https.bugzilla.kernel.org/>
Date:   Tue, 01 Nov 2016 19:41:10 +0000
From:   bugzilla-daemon@...zilla.kernel.org
To:     linux-ext4@...r.kernel.org
Subject: [Bug 186551] mkfs.ext4 tries to discard sector beyond the end of the
 device

https://bugzilla.kernel.org/show_bug.cgi?id=186551

--- Comment #7 from Eric Sandeen <sandeen@...deen.net> ---
Those seem to be spaced out at roughly 4G boundaries - 4k short of 4G if my
math is right.  Not sure what that implies though.

You might try with "-v" and/or trying smaller step values with blkdiscard to
see if anything works.

What do /sys/block/nvme0n1/discard_alignment and
/sys/block/nvme0n1/queue/discard_granularity contain?

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