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From: Patrick Mansfield <patmans@us.ibm.com>
To: linux-hotplug@vger.kernel.org
Subject: Re: scsi.agent trouble: load more than module per TYPE
Date: Wed, 18 Jan 2006 20:09:49 +0000	[thread overview]
Message-ID: <20060118200949.GA22110@us.ibm.com> (raw)
In-Reply-To: <20060118182519.4c7bd4b5@lounge.fly.net>

On Wed, Jan 18, 2006 at 08:45:23PM +0100, Michele Barbiero wrote:
> On Wed, 18 Jan 2006 20:16:21 +0100
> md@Linux.IT (Marco d'Itri) wrote:
> 
> [Cut]
> > Because the "official hotplug" package is dead and not actively
> > maintained anymore and sane distributions switched to udev.
> 
> It's a modules problem (hotplug), not device one (udev).

It is a module problem solved via udev rules.

IMHO, sg should still be loaded for all scsi devices, especially for
ones that have an odd (such as enclousre or raid) or unknown type. Looks
like only SUSE does it this way.

[Yeh ... you can use sr/st/sd for SG_IO.]

[kernel udev]$ grep "sg" etc/udev/*/*  | grep modprobe
etc/udev/debian/hotplug.rules:SUBSYSTEM="scsi_device", SYSFS{type}="[235689]", RUN+="/sbin/modprobe sg"
etc/udev/redhat/udev.rules:     RUN+="/sbin/modprobe sg"
etc/udev/suse/50-udev-default.rules:SUBSYSTEM="scsi_device", ACTION="add", RUN+="/sbin/modprobe sg"

The redhat line is only for SYSFS{type}="[23689]".

Types (per scsi.h) are:

#define TYPE_DISK           0x00
#define TYPE_TAPE           0x01
#define TYPE_PRINTER        0x02
#define TYPE_PROCESSOR      0x03    /* HP scanners use this */
#define TYPE_WORM           0x04    /* Treated as ROM by our system */
#define TYPE_ROM            0x05
#define TYPE_SCANNER        0x06
#define TYPE_MOD            0x07    /* Magneto-optical disk */
#define TYPE_MEDIUM_CHANGER 0x08
#define TYPE_COMM           0x09    /* Communications device */
#define TYPE_RAID           0x0c
#define TYPE_ENCLOSURE      0x0d    /* Enclosure Services Device */
#define TYPE_RBC            0x0e

-- Patrick Mansfield


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  parent reply	other threads:[~2006-01-18 20:09 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-01-18 17:25 scsi.agent trouble: load more than module per TYPE Michele Barbiero
2006-01-18 19:16 ` Marco d'Itri
2006-01-18 19:45 ` Michele Barbiero
2006-01-18 19:49 ` Marco d'Itri
2006-01-18 20:09 ` Patrick Mansfield [this message]
2006-01-18 20:16 ` Marco d'Itri
2006-01-18 21:05 ` Patrick Mansfield
2006-01-19  3:58 ` Andrey Borzenkov

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