From mboxrd@z Thu Jan 1 00:00:00 1970
From: bugme-daemon@bugzilla.kernel.org
Subject: [Bug 12207] block reads/writes > 122880 bytes to USB tape drive gives EBUSY
Date: Mon, 22 Dec 2008 23:30:49 -0800 (PST)
Message-ID: <20081223073049.D4AB3108040@picon.linux-foundation.org>
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http://bugzilla.kernel.org/show_bug.cgi?id=12207
kai.makisara@kolumbus.fi changed:
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CC| |kai.makisara@kolumbus.fi
------- Comment #3 from kai.makisara@kolumbus.fi 2008-12-22 23:30 -------
I have been testing large blocks with 2.6.27.7 and I was able to reach 6 MB
without any tricks. The difference between your system and mine is that my tape
is connected with SCSI and yours is with USB.
Looking at linux/drivers/usb/storage/scsiglue,c I find the following:
/* limit the total size of a transfer to 120 KB */
.max_sectors = 240,
Maybe the USB experts can tell what is the reason for this.
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