From: Patrick Mansfield <patmans@us.ibm.com>
To: linux-scsi@vger.kernel.org,
James Bottomley <James.Bottomley@steeleye.com>
Subject: examples using sysfs attributes to scan and delete scsi_devices
Date: Tue, 8 Jul 2003 13:41:47 -0700 [thread overview]
Message-ID: <20030708134147.A32189@beaverton.ibm.com> (raw)
In-Reply-To: <20030708134016.A32161@beaverton.ibm.com>; from patmans@us.ibm.com on Tue, Jul 08, 2003 at 01:40:16PM -0700
Some sample usage of the delete and scan attributes.
The system has one fastt200 (disk array) with 32 LUNs (4:0:0:*),
10 disk drives (4:0:1-10:0).
[root@elm3b79 root]# ls -l /sysfs/bus/scsi
total 0
--w------- 1 root root 0 Jul 8 13:28 delete
drwxr-xr-x 2 root root 0 Jul 8 04:04 devices
drwxr-xr-x 5 root root 0 Jul 8 04:04 drivers
--w------- 1 root root 0 Jul 8 13:08 scan
[root@elm3b79 root]# ls /sysfs/bus/scsi/devices
0:0:0:0 4:0:0:0 4:0:0:14 4:0:0:2 4:0:0:25 4:0:0:30 4:0:0:8 4:0:4:0
0:0:1:0 4:0:0:1 4:0:0:15 4:0:0:20 4:0:0:26 4:0:0:31 4:0:0:9 4:0:5:0
0:0:2:0 4:0:0:10 4:0:0:16 4:0:0:21 4:0:0:27 4:0:0:4 4:0:1:0 4:0:6:0
0:0:3:0 4:0:0:11 4:0:0:17 4:0:0:22 4:0:0:28 4:0:0:5 4:0:10:0 4:0:7:0
0:0:4:0 4:0:0:12 4:0:0:18 4:0:0:23 4:0:0:29 4:0:0:6 4:0:2:0 4:0:8:0
0:0:5:0 4:0:0:13 4:0:0:19 4:0:0:24 4:0:0:3 4:0:0:7 4:0:3:0 4:0:9:0
# delete a few scsi_devices from the disk array
[root@elm3b79 root]# echo "4 0 0 25" > /root/xx; dd if=/root/xx of=/sysfs/bus/scsi/delete
0+1 records in
0+1 records out
[root@elm3b79 root]# echo "4 0 0 1" > /root/xx; dd if=/root/xx of=/sysfs/bus/scsi/delete
0+1 records in
0+1 records out
[root@elm3b79 root]# echo "4 0 0 3" > /root/xx; dd if=/root/xx of=/sysfs/bus/scsi/delete
0+1 records in
0+1 records out
[root@elm3b79 root]# ls /sysfs/bus/scsi/devices
0:0:0:0 4:0:0:0 4:0:0:15 4:0:0:20 4:0:0:27 4:0:0:5 4:0:10:0 4:0:7:0
0:0:1:0 4:0:0:10 4:0:0:16 4:0:0:21 4:0:0:28 4:0:0:6 4:0:2:0 4:0:8:0
0:0:2:0 4:0:0:11 4:0:0:17 4:0:0:22 4:0:0:29 4:0:0:7 4:0:3:0 4:0:9:0
0:0:3:0 4:0:0:12 4:0:0:18 4:0:0:23 4:0:0:30 4:0:0:8 4:0:4:0
0:0:4:0 4:0:0:13 4:0:0:19 4:0:0:24 4:0:0:31 4:0:0:9 4:0:5:0
0:0:5:0 4:0:0:14 4:0:0:2 4:0:0:26 4:0:0:4 4:0:1:0 4:0:6:0
# Rescan a target, in this particular case a REPORT LUN scan occurs
[root@elm3b79 root]# echo "4 0 0 -" > /root/xx; dd if=/root/xx of=/sysfs/bus/scsi/scan
0+1 records in
0+1 records out
[root@elm3b79 root]# ls /sysfs/bus/scsi
delete devices drivers scan
[root@elm3b79 root]# ls /sysfs/bus/scsi/devices
0:0:0:0 4:0:0:0 4:0:0:14 4:0:0:2 4:0:0:25 4:0:0:30 4:0:0:8 4:0:4:0
0:0:1:0 4:0:0:1 4:0:0:15 4:0:0:20 4:0:0:26 4:0:0:31 4:0:0:9 4:0:5:0
0:0:2:0 4:0:0:10 4:0:0:16 4:0:0:21 4:0:0:27 4:0:0:4 4:0:1:0 4:0:6:0
0:0:3:0 4:0:0:11 4:0:0:17 4:0:0:22 4:0:0:28 4:0:0:5 4:0:10:0 4:0:7:0
0:0:4:0 4:0:0:12 4:0:0:18 4:0:0:23 4:0:0:29 4:0:0:6 4:0:2:0 4:0:8:0
0:0:5:0 4:0:0:13 4:0:0:19 4:0:0:24 4:0:0:3 4:0:0:7 4:0:3:0 4:0:9:0
# Rescan an entire adapter
[root@elm3b79 root]# echo "4 - - -" > /root/xx; dd if=/root/xx of=/sysfs/bus/scsi/scan
0+1 records in
0+1 records out
# some failure cases
[root@elm3b79 root]# echo "4 0 0 88" > /root/xx; dd if=/root/xx of=/sysfs/bus/scsi/delete
dd: writing `/sysfs/bus/scsi/delete': No such device
0+1 records in
0+0 records out
[root@elm3b79 root]# echo "4 0 88" > /root/xx; dd if=/root/xx of=/sysfs/bus/scsi/delete
dd: writing `/sysfs/bus/scsi/delete': Invalid argument
0+1 records in
0+0 records out
-- Patrick Mansfield
next prev parent reply other threads:[~2003-07-08 20:27 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-07-08 20:40 [PATCH] add sysfs attributes to scan and delete scsi_devices Patrick Mansfield
2003-07-08 20:41 ` Patrick Mansfield [this message]
2003-07-08 20:47 ` Christoph Hellwig
2003-07-08 22:36 ` Patrick Mansfield
2003-07-08 20:50 ` James Bottomley
2003-07-08 21:13 ` Christoph Hellwig
2003-07-08 22:24 ` Patrick Mansfield
2003-07-13 13:43 ` Christoph Hellwig
2003-07-09 20:27 ` [PATCH] take 2 " Patrick Mansfield
2003-07-09 20:29 ` and some example usage of the attributes Patrick Mansfield
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20030708134147.A32189@beaverton.ibm.com \
--to=patmans@us.ibm.com \
--cc=James.Bottomley@steeleye.com \
--cc=linux-scsi@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.