[PATCH] multipath update

extras/multipath/ChangeLog

@@ -1,3 +1,13 @@
+2004-02-21 multipath-018
+	* From the Debian SID inclusion review (Philipp Matthias Hahn)
+		* use DESTDIR install prefix in the Makefile
+		* add man pages for devmap_name & multipath
+		* correct libsysfs.h includes
+		* fork the hotplug script in its own shell
+	* Sync with the kernel device mapper code as of 2.6.3-udm3
+	  ie. Remove the test interval parameter and its uses
+	* Remove superfluous scsi parameter passed from hotplug
+	* Add the man pages to the [un]install targets
 2004-02-17 multipath-017
 	* remove the restrictive -f flag.
 	  Introduce a more generic "-m iopolicy" one.

extras/multipath/Makefile

@@ -10,8 +10,11 @@ bindir      = ${exec_prefix}/sbin
 udevdir	    = ../..
 klibcdir    = $(udevdir)/klibc
 sysfsdir    = $(udevdir)/libsysfs
+mandir      = /usr/share/man/man8
 
 CC = gcc
+GZIP = /bin/gzip -c
+
 GCCINCDIR := ${shell $(CC) -print-search-dirs | sed -ne "s/install: \(.*\)/\1include/gp"}
 KERNEL_DIR = /lib/modules/${shell uname -r}/build
 CFLAGS = -pipe -g -O2 -Wall -Wunused -Wstrict-prototypes -nostdinc \
@@ -45,26 +48,33 @@ all:	recurse
 $(EXEC): $(OBJS)
 	$(LD) -o $(EXEC) $(CRT0) $(OBJS) $(SYSFSOBJS) $(DMOBJS) $(LIB) $(LIBGCC)
 	strip $(EXEC)
+	$(GZIP) $(EXEC).8 > $(EXEC).8.gz
 
 devmap_name: devmap_name.o
 	$(LD) -o devmap_name $(CRT0) devmap_name.o $(DMOBJS) $(LIB) $(LIBGCC)
 	strip devmap_name
+	$(GZIP) devmap_name.8 > devmap_name.8.gz
 
 clean:
-	rm -f core *.o $(EXEC) devmap_name
+	rm -f core *.o $(EXEC) devmap_name *.gz
 	$(MAKE) -C libdevmapper clean
 
 install:
-	install -d $(bindir)
+	install -d $(DESTDIR)$(bindir)
-	install -m 755 $(EXEC) $(bindir)/
+	install -m 755 $(EXEC) $(DESTDIR)$(bindir)/
-	install -m 755 devmap_name $(bindir)/
+	install -m 755 devmap_name $(DESTDIR)$(bindir)/
-	install -d /etc/hotplug.d/scsi/
+	install -d $(DESTDIR)/etc/hotplug.d/scsi/
-	install -m 755 multipath.hotplug /etc/hotplug.d/scsi/
+	install -m 755 multipath.hotplug $(DESTDIR)/etc/hotplug.d/scsi/
+	install -d $(DESTDIR)$(mandir)
+	install -m 644 devmap_name.8.gz $(DESTDIR)$(mandir)
+	install -m 644 multipath.8.gz $(DESTDIR)$(mandir)
 
 uninstall:
-	rm /etc/hotplug.d/scsi/multipath.hotplug
+	rm $(DESTDIR)/etc/hotplug.d/scsi/multipath.hotplug
-	rm $(bindir)/$(EXEC)
+	rm $(DESTDIR)$(bindir)/$(EXEC)
-	rm $(bindir)/devmap_name
+	rm $(DESTDIR)$(bindir)/devmap_name
+	rm $(DESTDIR)$(mandir)/devmap_name.8.gz
+	rm $(DESTDIR)$(mandir)/multipath.8.gz
 
 # Code dependencies
 main.o: main.c main.h sg_include.h devinfo.h

extras/multipath/devinfo.c

@@ -3,7 +3,7 @@
 #include <string.h>
 #include <fcntl.h>
 #include <sys/ioctl.h>
-#include <libsysfs.h>
+#include <sysfs/libsysfs.h>
 #include "devinfo.h"
 #include "sg_include.h"
 

extras/multipath/devmap_name.8

@@ -0,0 +1,30 @@
+.TH DEVMAP_NAME 8 "February 2004" "" "Linux Administrator's Manual"
+.SH NAME
+devmap_name \- Query device-mapper name
+.SH SYNOPSIS
+.BI devmap_name " major minor"
+.SH DESCRIPTION
+.B devmap_name
+queries the device-mapper for the name for the device
+specified by
+.I major
+and
+.I minor
+number.
+.br
+.B devmap_name
+can be called from
+.B udev
+by the following rule in
+.IR /etc/udev/udev.rules :
+.sp
+.nf
+KERNEL="dm-[0-9]*", PROGRAM="/sbin/devmap_name %M %m", \\
+	NAME="%k", SYMLINK="%c"
+.fi
+.SH "SEE ALSO"
+.BR udev (8),
+.BR dmsetup (8)
+.SH AUTHORS
+.B devmap_name
+was developed by Christophe Varoqui, <christophe.varoqui@free.fr> and others.

extras/multipath/main.c

@@ -25,7 +25,7 @@
 #include <linux/kdev_t.h>
 #include <string.h>
 #include <sys/ioctl.h>
-#include <libsysfs.h>
+#include <sysfs/libsysfs.h>
 #include "libdevmapper/libdevmapper.h"
 #include "main.h"
 #include "devinfo.h"
@@ -110,7 +110,7 @@ get_all_paths_sysfs(struct env * conf, struct path * all_paths)
 	char path[FILE_NAME_SIZE];
 	struct path curpath;
 
-	/* if called from hotplug, only consider the paths that relate to */
+	/* if called from hotplug, only consider the paths that relate */
 	/* to the device pointed by conf.hotplugdev */
 	memset(empty_buff, 0, WWID_SIZE);
 	memset(refwwid, 0, WWID_SIZE);
@@ -442,6 +442,7 @@ group_by_serial(struct multipath * mp, struct path * all_paths, char * str) {
 				     path_count, path_buff);
 	}
 	sprintf(str, " %i%s", pg_count, pg_buff);
+	free(bitmap);
 }
 
 static int
@@ -507,8 +508,6 @@ setup_map(struct env * conf, struct path * all_paths,
 	if (np < 1)
 		return 0;
 
-	params_p += sprintf(params_p, "%i", conf->dm_path_test_int);
-
 	if ((all_paths[PINDEX(index,0)].iopolicy == MULTIBUS &&
 	    conf->iopolicy == -1) || conf->iopolicy == MULTIBUS) {
 		params_p += sprintf(params_p, " 1 %i %s %i %i",
@@ -602,18 +601,19 @@ static void
 usage(char * progname)
 {
 	fprintf(stderr, VERSION_STRING);
-	fprintf(stderr, "Usage: %s [-v|-q] [-d] [-i int] [-m max_devs] ",
+	fprintf(stderr, "Usage: %s [-v|-q] [-d] [-m max_devs]",
 		progname);
-	fprintf(stderr,	"[-p failover|multibus|group_by_serial]\n");
+	fprintf(stderr,	"[-p failover|multibus|group_by_serial] [device]\n");
 	fprintf(stderr, "\t-v\t\tverbose, print all paths and multipaths\n");
 	fprintf(stderr, "\t-q\t\tquiet, no output at all\n");
 	fprintf(stderr, "\t-d\t\tdry run, do not create or update devmaps\n");
-	fprintf(stderr, "\t-i\t\tmultipath target param : polling interval\n");
 	fprintf(stderr, "\t-m max_devs\tscan {max_devs} devices at most\n");
 	fprintf(stderr, "\t-p policy\tforce maps to specified policy :\n");
-	fprintf(stderr, "\t\t\tfailover\t1 path per priority group\n");
+	fprintf(stderr, "\t   failover\t\t- 1 path per priority group\n");
-	fprintf(stderr, "\t\t\tmultibus\tall paths in 1 priority group\n");
+	fprintf(stderr, "\t   multibus\t\t- all paths in 1 priority group\n");
-	fprintf(stderr, "\t\t\tgroup_by_serial\t1 priority group per serial\n");
+	fprintf(stderr, "\t   group_by_serial\t- 1 priority group per serial\n");
+	fprintf(stderr, "\tdevice\t\tlimit scope to the device's multipath\n");
+	fprintf(stderr, "\t\t\t(hotplug-style $DEVPATH reference)\n");
 	exit(1);
 }
 
@@ -632,7 +632,6 @@ main(int argc, char *argv[])
 	conf.verbose = 0;	/* 1 == Print all_paths and mp */
 	conf.quiet = 0;		/* 1 == Do not even print devmaps */
 	conf.iopolicy = -1;	/* Apply the defaults in get_unique_id() */
-	conf.dm_path_test_int = 10;
 
 	for (i = 1; i < argc; ++i) {
 		if (0 == strcmp("-v", argv[i])) {
@@ -649,25 +648,19 @@ main(int argc, char *argv[])
 			conf.quiet = 1;
 		} else if (0 == strcmp("-d", argv[i]))
 			conf.dry_run = 1;
-		else if (0 == strcmp("-i", argv[i]))
+		else if (0 == strcmp("-p", argv[i])) {
-			conf.dm_path_test_int = atoi(argv[++i]);
+			i++;
-		else if (0 == strcmp("-p", argv[i++])) {
 			if (!strcmp(argv[i], "failover"))
 				conf.iopolicy = FAILOVER;
 			if (!strcmp(argv[i], "multibus"))
 				conf.iopolicy = MULTIBUS;
 			if (!strcmp(argv[i], "group_by_serial"))
 				conf.iopolicy = GROUP_BY_SERIAL;
-		} else if (0 == strcmp("scsi", argv[i]))
+		} else if (*argv[i] == '-') {
-			strcpy(conf.hotplugdev, argv[++i]);
-		else if (*argv[i] == '-') {
 			fprintf(stderr, "Unknown switch: %s\n", argv[i]);
 			usage(argv[0]);
-		} else if (*argv[i] != '-') {
+		} else
-			fprintf(stderr, "Unknown argument\n");
+			strncpy(conf.hotplugdev, argv[i], FILE_NAME_SIZE);
-			usage(argv[0]);
-		}
-
 	}
 
 	/* dynamic allocations */

extras/multipath/main.h

@@ -102,7 +102,6 @@ struct env {
 	int dry_run;
 	int iopolicy;
 	int with_sysfs;
-	int dm_path_test_int;
 	char sysfs_path[FILE_NAME_SIZE];
 	char hotplugdev[FILE_NAME_SIZE];
 };
@@ -110,8 +109,8 @@ struct env {
 /* Build version */
 #define PROG    "multipath"
 
-#define VERSION_CODE 0x000010
+#define VERSION_CODE 0x000012
-#define DATE_CODE    0x0C1503
+#define DATE_CODE    0x021504
 
 #define MULTIPATH_VERSION(version)	\
 	(version >> 16) & 0xFF,		\

extras/multipath/multipath.8

@@ -0,0 +1,53 @@
+.TH MULTIPATH 8 "February 2004" "" "Linux Administrator's Manual"
+.SH NAME
+multipath \- Device mapper target autoconfig
+.SH SYNOPSIS
+.B multipath
+.RB [\| \-v | \-q \|]
+.RB [\| \-d \|]
+.RB [\| \-m\ \c
+.IR max_devs \|]
+.RB [\| \-p\ \c
+.BR failover | multibus | group_by_serial \|]
+.RB [\| device \|]
+.SH DESCRIPTION
+.B multipath
+is used to detect multiple paths to devices for fail-over or performance reasons and coalesces them.
+.SH OPTIONS
+.TP
+.B \-v
+verbose, print all paths and multipaths
+.TP
+.B \-q
+quiet, no output at all
+.TP
+.B \-d
+dry run, do not create or update devmaps
+.TP
+.BI \-m " max_devs"
+scan
+.I max_devs
+devices at most
+.TP
+.BI \-p " policy"
+force maps to specified policy:
+.RS 1.2i
+.TP 1.2i
+.B failover
+1 path per priority group
+.TP
+.B multibus
+all paths in 1 priority group
+.TP
+.B group_by_serial
+1 priority group per serial
+.RE
+.TP
+.B device
+limit the [re]configuration to the specified device's multipath scope. device is given in its hotplug $DEVPATH form like /devices/pci0000:03/0000:03:01.0/host0/0:0:5:1
+.SH "SEE ALSO"
+.BR udev (8),
+.BR dmsetup (8)
+.SH AUTHORS
+.B multipath
+was developed by Christophe Varoqui, <christophe.varoqui@free.fr> and others.

extras/multipath/multipath.hotplug

@@ -1,6 +1,7 @@
+#!bin/sh
 . /etc/hotplug/hotplug.functions
 
 # wait for sysfs
 sleep 1
 
-mesg `/sbin/multipath scsi $DEVPATH`
+mesg `/sbin/multipath $DEVPATH`