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Date: Mon, 10 Aug 2009 14:34:41 GMT
From: bugzilla-daemon@...zilla.kernel.org
To: linux-ext4@...r.kernel.org
Subject: [Bug 13909] md5sum on 3GB file is constantly hanging
http://bugzilla.kernel.org/show_bug.cgi?id=13909
Leonardo Mosquera <wingsofthehydra@...il.com> changed:
What |Removed |Added
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CC| |wingsofthehydra@...il.com
--- Comment #15 from Leonardo Mosquera <wingsofthehydra@...il.com> 2009-08-10 14:34:40 ---
You mentioned this happens in all filesystems so it's not an EXT4 problem.
You also said it's a USB drive, which leads me to think it might be the
following issue with the ehci_hcd kernel module, which I also have:
http://bugzilla.kernel.org/show_bug.cgi?id=11159
You can verify this by tailing /var/log/kern.log and looking for USB related
errors when pv's traffic stalls.
The current lame fixup is to rmmod ehci_hcd, thus switching to USB 1.1 and
limiting transfer rate to 1.5MB/s. I also suggest you try to md5 without
ehci_hcd to see if the problem stops happening.
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