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-CBxJSmt3ro@https.bugzilla.kernel.org/>
Date:   Tue, 01 Nov 2016 17:51:11 +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 #4 from Eric Sandeen <sandeen@...deen.net> ---
I am pretty sure all of those messages will be in 512-byte sectors.

/proc/partitions is in 1k units (just to keep it interesting)

781412184 * 1024/512 = 1562824368 512-byte sectors - also past the sector it's
trying to discard.

I wonder what happens if you try a blkdiscard for the entire device, and see if
you get a failure from it as well.  (*** note that this will clear any data on
the device, as it will discard every block on the device ***).

It seems unlikely that this is an ext4/e2fsprogs problem at this point.

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