[98593] in RedHat Linux List
Re: Wanted, SCSI bus trick
daemon@ATHENA.MIT.EDU (Jan Carlson)
Mon Nov 9 19:35:29 1998
Date: Mon, 09 Nov 1998 18:09:14 -0500
From: Jan Carlson <janc@iname.com>
To: redhat-list@redhat.com
Resent-From: redhat-list@redhat.com
Reply-To: redhat-list@redhat.com
I held my breath while a friend hot-plugged a scsi disk:
1. Plug a scsi hard drive into a running RedHat5.1
2. Power it on
3. cat something into /proc/scsi/???
4. Mount partitions from the hard drive
Here are comments about it from file:/usr/src/linux/drivers/scsi/scsi.c
of RedHat kernel-source 2.0.36:
/*
* Usage: echo "scsi add-single-device 0 1 2 3" >/proc/scsi/scsi
* with "0 1 2 3" replaced by your "Host Channel Id Lun".
* Consider this feature BETA.
* CAUTION: This is not for hotplugging your peripherals. As
* SCSI was not designed for this you could damage your
* hardware !
* However perhaps it is legal to switch on an
* already connected device. It is perhaps not
* guaranteed this device doesn't corrupt an ongoing data transfer.
*/
/*
* Usage: echo "scsi remove-single-device 0 1 2 3" >/proc/scsi/scsi
* with "0 1 2 3" replaced by your "Host Channel Id Lun".
*
* Consider this feature pre-BETA.
*
* CAUTION: This is not for hotplugging your peripherals. As
* SCSI was not designed for this you could damage your
* hardware and thoroughly confuse the SCSI subsystem.
*
*/
--
Jan Carlson
janc@iname.com Scarborough, Ontario, Canada
Mailed with Netscape 4.5 on Red Hat Linux 5.2
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