linux-kernel - PROBLEM: 2.6.25: sr0 cdrom does not change medium size on medium change

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Date:	Thu, 8 May 2008 13:21:08 +0200
From:	Ingo Saitz <Ingo.Saitz@...d.uni-hannover.de>
To:	linux-kernel@...r.kernel.org
Subject: PROBLEM: 2.6.25: sr0 cdrom does not change medium size on medium
	change

Moin

In 2.6.25 when I change the CD or DVD medium, the size of it in
/sys/block/sr0/size remains the same. It is set upon mounting one medium
after boot. This lead to "access beyond end of device" error if the
current medium is bigger than the first mounted. I found I can reset the
behaviour with "wodim -reset dev=/dev/sr0" when no medium is inserted.
This bug also occurs with 2.6.25.2.

I have an Intel ICH4 chipset and am using the ata_piix driver vom
libata, so my cdrom is available as /dev/sr0. The drive is a combo drive
from TEAC (DW-224E), which can read DVD and read/write CD.

Attached are .config, dmesg from boot and /proc/scsi/scsi.

    Ingo
-- 
„Wir wollen keinen gläsernen Menschen. Wir wollen einen gläsernen Verbrecher.“
    -- Siegfried Kauder, CDU

Wir haben jetzt den gläsernen Deutschen, wo bleibt der Verbrecher?

View attachment "config-2.6.25.2-schwan20080508" of type "text/plain" (55922 bytes)

View attachment "dmesg" of type "text/plain" (19245 bytes)

View attachment "scsi" of type "text/plain" (337 bytes)

Download attachment "signature.asc" of type "application/pgp-signature" (190 bytes)