linux-kernel - Re: 2.6.31-rc0: sdb1 only starts to exist when sdb is accessed?

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Date:	Sun, 5 Jul 2009 21:28:42 +0200
From:	"Andries E. Brouwer" <Andries.Brouwer@....nl>
To:	Pavel Machek <pavel@....cz>
Cc:	kernel list <linux-kernel@...r.kernel.org>, axboe@...nel.dk,
	Andries.Brouwer@....nl, "Rafael J. Wysocki" <rjw@...k.pl>
Subject: Re: 2.6.31-rc0: sdb1 only starts to exist when sdb is accessed?

On Sun, Jul 05, 2009 at 08:54:47PM +0200, Pavel Machek wrote:
> 
> ...happens with android phone doing usb storage emulation. I'm using
> static /dev/ ... I hope!
> 
> Jul  5 20:06:02 amd udevd-event[17666]: mknod(/dev/bus/usb/001/073, 020664, (189,72) failed: Operation not permitted 
> Jul  5 20:06:07 amd kernel: scsi 24:0:0:0: Direct-Access     HTC      Android Phone    0100 PQ: 0 ANSI: 2
> Jul  5 20:06:07 amd kernel: sd 24:0:0:0: Attached scsi generic sg1 type 0
> Jul  5 20:06:07 amd kernel: sd 24:0:0:0: [sdb] Attached SCSI removable disk
> Jul  5 20:13:08 amd pand[17815]: Bluetooth PAN daemon version 3.36
> ...
> Jul  5 20:51:02 amd kernel: sd 24:0:0:0: [sdb] 3862528 512-byte hardware sectors: (1.97 GB/1.84 GiB)
> Jul  5 20:51:02 amd kernel: sd 24:0:0:0: [sdb] Assuming drive cache: write through
> Jul  5 20:51:02 amd kernel: sd 24:0:0:0: [sdb] Assuming drive cache: write through
> Jul  5 20:51:02 amd kernel:  sdb: sdb1
> 
> You see? Partitions are only detected long after device is
> detected. IIRC it did not behave like that before...

Hi Pavel,

This doesn't seem to have anything to do with partition detection:
the partition line has the same time stamp as the scsi identify line
("3862528 512-byte hardware sectors").

Andries

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