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authorchristophe.varoqui@free.fr <christophe.varoqui@free.fr>2003-12-30 22:36:17 -0800
committerGreg KH <gregkh@suse.de>2005-04-26 21:13:12 -0700
commit9107fb88ba7a7b2eb09f01e311cdc2b29d04a123 (patch)
tree28e5c73ad20f5639dbeb701188949a2c38fcf2ec /extras/multipath
parentf4dc8d11c22ef72567a2e5c56ac9bae82867189b (diff)
[PATCH] extras multipath update
2003-12-29 multipath-012 * refresh doc * add the uninstall target in Makefile * /sbin/multipath, not /root/multipath in hotplug agent
Diffstat (limited to 'extras/multipath')
-rw-r--r--extras/multipath/ChangeLog3
-rw-r--r--extras/multipath/Makefile4
-rw-r--r--extras/multipath/README18
-rw-r--r--extras/multipath/multipath.hotplug2
4 files changed, 16 insertions, 11 deletions
diff --git a/extras/multipath/ChangeLog b/extras/multipath/ChangeLog
index 730d6e34a6..9296b4db68 100644
--- a/extras/multipath/ChangeLog
+++ b/extras/multipath/ChangeLog
@@ -1,3 +1,6 @@
+2003-12-29 multipath-012
+ * refresh doc
+ * add the uninstall target in Makefile
2003-12-22 multipath-010
* tweak the install target in Makefile
* stop passing fds as argument : this change enable a strict
diff --git a/extras/multipath/Makefile b/extras/multipath/Makefile
index 99036a6a00..3f13532e16 100644
--- a/extras/multipath/Makefile
+++ b/extras/multipath/Makefile
@@ -55,5 +55,9 @@ install:
install -d /etc/hotplug.d/scsi/
install -m 755 multipath.hotplug /etc/hotplug.d/scsi/
+uninstall:
+ rm /etc/hotplug.d/scsi/multipath.hotplug
+ rm $(bindir)/$(EXEC)
+
# Code dependencies
main.o: main.c main.h sg_include.h
diff --git a/extras/multipath/README b/extras/multipath/README
index 6a5637de4b..951c2788bc 100644
--- a/extras/multipath/README
+++ b/extras/multipath/README
@@ -3,6 +3,7 @@ Dependancies :
o libdevmapper : comes with device-mapper-XXXX.tar.gz
See www.sistina.com
+ This lib has been dropped in the multipath tree
o libsysfs : comes with sysutils
See ftp.kernel.org/pub/linux/utils/kernel/hotplug/
@@ -34,8 +35,9 @@ In 2.5+, we rely on libsysfs (sysutils) to access to
sysfs device enums.
the wwid is retrieved by a switch fonction. Only White
-Listed HW can filled this field. For now only
-StorageWorks HW is White Listed. (See notes)
+Listed HW can filled this field. For now every FC array
+HW listed in kernel's devinfo.c is White Listed, assuming
+the WWID is stored is the SCSI-3 standard 0x83 EVPD page.
When all_paths is filled, we coalesce the paths and store
the result in mp array. Each mp is a struct like this :
@@ -47,25 +49,21 @@ struct multipath {
};
When mp is filled, the device maps are fed to the kernel
-through libdevmapper. Stale paths (failed TUR) are
-discarded.
+through libdevmapper.
Notes :
=======
-o make sure you have enough /dev/sg* nodes
- (/dev/MAKEDEV if necesary)
+o On 2.4, make sure you have enough /dev/sg* nodes
+ (/dev/MAKEDEV if necesary). Same goes for /dev/sd*
o path coalescing relies on a path unique id being found.
This unique id, lacking a standard method, is vendor
specific. A switch function (get_unique_id) is present
and an example function is provided for storageworks
- arrays (get_storageworks_wwid). Feel free to enrich
+ arrays (get_evpd_wwid). Feel free to enrich
with hardware you have at hand :)
-o Something goes wrong with sd.o, qla2200 & dm-mod
- refcounting : I can't unload these modules after exec.
-
o The kernel does NOT manage properly ghosts paths
with StorageWorks HW. Seems nobody cares after a load
of posts to linux-scsi.
diff --git a/extras/multipath/multipath.hotplug b/extras/multipath/multipath.hotplug
index db7894cb99..8d60f4d2c6 100644
--- a/extras/multipath/multipath.hotplug
+++ b/extras/multipath/multipath.hotplug
@@ -1,3 +1,3 @@
. /etc/hotplug/hotplug.functions
sleep 1
-mesg `/root/multipath scsi $DEVPATH`
+mesg `/sbin/multipath scsi $DEVPATH`