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Old 08-29-2008, 09:30 PM
 
Default multipath-tools ./multipath.conf.annotated lib ...

CVSROOT: /cvs/dm
Module name: multipath-tools
Branch: RHEL5_FC6
Changes by: bmarzins@sourceware.org 2008-08-29 21:30:34

Modified files:
. : multipath.conf.annotated
libmultipath : dict.c structs.h
multipathd : main.c

Log message:
Fix for bz #457226. The kernel doesn't allow "ulimit -n unlimited" because
you can't set the max number of open fds greater than NR_OPEN. So multipath's
max_fds config option now allows the value "max" instead of "unlimited", which
sets the max open fds to NR_OPEN.

Patches:
http://sourceware.org/cgi-bin/cvsweb.cgi/multipath-tools/multipath.conf.annotated.diff?cvsroot=dm&only_with _tag=RHEL5_FC6&r1=1.18.2.6&r2=1.18.2.7
http://sourceware.org/cgi-bin/cvsweb.cgi/multipath-tools/libmultipath/dict.c.diff?cvsroot=dm&only_with_tag=RHEL5_FC6&r1= 1.17.2.5&r2=1.17.2.6
http://sourceware.org/cgi-bin/cvsweb.cgi/multipath-tools/libmultipath/structs.h.diff?cvsroot=dm&only_with_tag=RHEL5_FC6& r1=1.18.2.3&r2=1.18.2.4
http://sourceware.org/cgi-bin/cvsweb.cgi/multipath-tools/multipathd/main.c.diff?cvsroot=dm&only_with_tag=RHEL5_FC6&r1= 1.69.2.8&r2=1.69.2.9

--- multipath-tools/multipath.conf.annotated 2008/08/25 20:59:05 1.18.2.6
+++ multipath-tools/multipath.conf.annotated 2008/08/29 21:30:34 1.18.2.7
@@ -84,7 +84,7 @@
# # scope : multipathd
# # desc : Sets the maximum number of open file descriptors for the
# # multipathd process.
-# # values : unlimited|n > 0
+# # values : max|n > 0
# # default : None
# #
# max_fds 8192
--- multipath-tools/libmultipath/dict.c 2008/08/25 20:59:06 1.17.2.5
+++ multipath-tools/libmultipath/dict.c 2008/08/29 21:30:34 1.17.2.6
@@ -155,8 +155,8 @@
return 1;

if (strlen(buff) == 9 &&
- !strcmp(buff, "unlimited"))
- conf->max_fds = MAX_FDS_UNLIMITED;
+ !strcmp(buff, "max"))
+ conf->max_fds = MAX_FDS_MAX;
else
conf->max_fds = atoi(buff);
FREE(buff);
@@ -1653,8 +1653,8 @@
if (!conf->max_fds)
return 0;

- if (conf->max_fds < 0)
- return snprintf(buff, len, "unlimited");
+ if (conf->max_fds == MAX_FDS_MAX)
+ return snprintf(buff, len, "max");
return snprintf(buff, len, "%d", conf->max_fds);
}

--- multipath-tools/libmultipath/structs.h 2008/08/25 20:59:06 1.18.2.3
+++ multipath-tools/libmultipath/structs.h 2008/08/29 21:30:34 1.18.2.4
@@ -20,7 +20,7 @@
#define NO_PATH_RETRY_FAIL -1
#define NO_PATH_RETRY_QUEUE -2

-#define MAX_FDS_UNLIMITED -1
+#define MAX_FDS_MAX (1024 * 1024)

enum free_path_switch {
KEEP_PATHS,
--- multipath-tools/multipathd/main.c 2008/08/27 19:14:58 1.69.2.8
+++ multipath-tools/multipathd/main.c 2008/08/29 21:30:34 1.69.2.9
@@ -1479,14 +1479,9 @@

if (conf->max_fds) {
struct rlimit fd_limit;
- if (conf->max_fds > 0) {
- fd_limit.rlim_cur = conf->max_fds;
- fd_limit.rlim_max = conf->max_fds;
- }
- else {
- fd_limit.rlim_cur = RLIM_INFINITY;
- fd_limit.rlim_max = RLIM_INFINITY;
- }
+
+ fd_limit.rlim_cur = conf->max_fds;
+ fd_limit.rlim_max = conf->max_fds;
if (setrlimit(RLIMIT_NOFILE, &fd_limit) < 0)
condlog(0, "can't set open fds limit to %d : %s
",
conf->max_fds, strerror(errno));

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Old 01-16-2009, 08:30 PM
 
Default multipath-tools ./multipath.conf.annotated lib ...

CVSROOT: /cvs/dm
Module name: multipath-tools
Branch: RHEL4_FC5
Changes by: bmarzins@sourceware.org 2009-01-16 21:30:43

Modified files:
. : multipath.conf.annotated
libmultipath : dict.c

Log message:
Fix fox bz #453547. Fix rr_min_io for devices/maps in multipath.conf

Patches:
http://sourceware.org/cgi-bin/cvsweb.cgi/multipath-tools/multipath.conf.annotated.diff?cvsroot=dm&only_with _tag=RHEL4_FC5&r1=1.16.2.6&r2=1.16.2.7
http://sourceware.org/cgi-bin/cvsweb.cgi/multipath-tools/libmultipath/dict.c.diff?cvsroot=dm&only_with_tag=RHEL4_FC5&r1= 1.16.2.5&r2=1.16.2.6

--- multipath-tools/multipath.conf.annotated 2008/04/14 22:40:08 1.16.2.6
+++ multipath-tools/multipath.conf.annotated 2009/01/16 21:30:42 1.16.2.7
@@ -265,6 +265,14 @@
# path_selector "round-robin 0"
#
# #
+# # name : rr_min_io
+# # scope : multipath
+# # desc : the number of IO to route to a path before switching
+# # to the next in the same path group
+# #
+# rr_min_io 100
+#
+# #
# # name : failback
# # scope : multipathd
# # desc : tell the daemon to manage path group failback, or
@@ -403,6 +411,14 @@
# path_selector "round-robin 0"
#
# #
+# # name : rr_min_io
+# # scope : multipath
+# # desc : the number of IO to route to a path before switching
+# # to the next in the same path group
+# #
+# rr_min_io 100
+#
+# #
# # name : path_checker
# # scope : multipathd
# # desc : path checking alorithm to use to check path state
--- multipath-tools/libmultipath/dict.c 2008/04/14 22:40:08 1.16.2.5
+++ multipath-tools/libmultipath/dict.c 2009/01/16 21:30:43 1.16.2.6
@@ -556,6 +556,26 @@
}

static int
+hw_rr_min_io_handler(vector strvec)
+{
+ char * buff;
+ struct hwentry * hwe = VECTOR_LAST_SLOT(conf->hwtable);
+
+ if (!hwe)
+ return 1;
+
+ buff = set_value(strvec);
+
+ if (!buff)
+ return 1;
+
+ hwe->rr_min_io = atoi(buff);
+ FREE(buff);
+
+ return 0;
+}
+
+static int
hw_features_handler(vector strvec)
{
struct hwentry * hwe = VECTOR_LAST_SLOT(conf->hwtable);
@@ -830,6 +850,26 @@
return 0;
}

+
+static int
+mp_rr_min_io_handler(vector strvec)
+{
+ char * buff;
+ struct mpentry * mpe = VECTOR_LAST_SLOT(conf->mptable);
+
+ if (!mpe)
+ return 1;
+
+ buff = set_value(strvec);
+
+ if (!buff)
+ return 1;
+
+ mpe->rr_min_io = atoi(buff);
+ FREE(buff);
+
+ return 0;
+}
static int
mp_failback_handler(vector strvec)
{
@@ -1087,6 +1127,7 @@
install_keyword("getuid_callout", &hw_getuid_callout_handler);
install_keyword("path_selector", &hw_selector_handler);
install_keyword("path_checker", &hw_path_checker_handler);
+ install_keyword("rr_min_io", &hw_rr_min_io_handler);
install_keyword("features", &hw_features_handler);
install_keyword("hardware_handler", &hw_handler_handler);
install_keyword("prio_callout", &prio_callout_handler);
@@ -1104,6 +1145,7 @@
install_keyword("alias", &alias_handler);
install_keyword("path_grouping_policy", &mp_pgpolicy_handler);
install_keyword("path_selector", &mp_selector_handler);
+ install_keyword("rr_min_io", &mp_rr_min_io_handler);
install_keyword("failback", &mp_failback_handler);
install_keyword("rr_weight", &mp_weight_handler);
install_keyword("no_path_retry", &mp_no_path_retry_handler);

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Old 01-16-2009, 09:47 PM
 
Default multipath-tools ./multipath.conf.annotated lib ...

CVSROOT: /cvs/dm
Module name: multipath-tools
Branch: RHEL5_FC6
Changes by: bmarzins@sourceware.org 2009-01-16 22:47:31

Modified files:
. : multipath.conf.annotated
libmultipath : callout.c

Log message:
Fix for 480048. multipathd was not releasing fds when a fork failed in
execute_program. Also, the error messages from execute_program were not very
helpful. This patch fixes both

Patches:
http://sourceware.org/cgi-bin/cvsweb.cgi/multipath-tools/multipath.conf.annotated.diff?cvsroot=dm&only_with _tag=RHEL5_FC6&r1=1.18.2.9&r2=1.18.2.10
http://sourceware.org/cgi-bin/cvsweb.cgi/multipath-tools/libmultipath/callout.c.diff?cvsroot=dm&only_with_tag=RHEL5_FC6& r1=1.5&r2=1.5.2.1

--- multipath-tools/multipath.conf.annotated 2008/09/08 22:01:19 1.18.2.9
+++ multipath-tools/multipath.conf.annotated 2009/01/16 22:47:31 1.18.2.10
@@ -38,6 +38,13 @@
# # scope : multipath
# # desc : the default path grouping policy to apply to unspecified
# # multipaths
+# # values : failover = 1 path per priority group
+# # multibus = all valid paths in 1 priority group
+# # group_by_serial = 1 priority group per detected serial
+# # number
+# # group_by_prio = 1 priority group per path priority
+# # value
+# # group_by_node_name = 1 priority group per target node name
# # default : failover
# #
# path_grouping_policy multibus
@@ -47,7 +54,7 @@
# # scope : multipath
# # desc : the default program and args to callout to obtain a unique
# # path identifier. Absolute path required
-# # default : /sbin/scsi_id -g -u -s
+# # default : "/sbin/scsi_id -g -u -s /block/%n"
# #
# getuid_callout "/sbin/scsi_id -g -u -s /block/%n"
#
@@ -65,12 +72,23 @@
# # name : path_checker
# # scope : multipath & multipathd
# # desc : the default method used to determine the paths' state
-# # values : readsector0|tur|emc_clariion|hp_sw|directio
+# # values : directio|tur|hp_sw|rdac|emc_clariion|readsector0|c ciss_tur
# # default : readsector0
# #
# #path_checker readsector0
#
# #
+# # name : features
+# # scope : multipath
+# # desc : The default extra features of multipath devices. The
+# # only existing feature currently is queue_if_no_path, which
+# # is the same as setting no_path_retry to queue.
+# # values : "1 queue_if_no_path"
+# # default : (null)
+# #
+# features "1 queue_if_no_path"
+#
+# #
# # name : rr_min_io
# # scope : multipath
# # desc : the number of IO to route to a path before switching
@@ -258,21 +276,20 @@
# # name : path_grouping_policy
# # scope : multipath
# # desc : path grouping policy to apply to this multipath
-# # values : failover, multibus, group_by_serial
+# # values : failover = 1 path per priority group
+# # multibus = all valid paths in 1 priority
+# # group
+# # group_by_serial = 1 priority group per detected
+# # serial number
+# # group_by_prio = 1 priority group per path
+# # priority value
+# # group_by_node_name = 1 priority group per target
+# # node name
# # default : failover
# #
# path_grouping_policy multibus
#
# #
-# # name : path_checker
-# # scope : multipathd
-# # desc : path checking alorithm to use to check path state
-# # values : readsector0, tur
-# # default : readsector0
-# #
-# # path_checker readsector0
-#
-# #
# # name : path_selector
# # desc : the path selector algorithm to use for this mpath
# # these algo are offered by the kernel mpath target
@@ -284,19 +301,29 @@
# #
# # name : failback
# # scope : multipathd
-# # desc : tell the daemon to manage path group failback, or not to.
-# # 0 means immediate failback, values >0 means deffered failback
-# # expressed in seconds.
+# # desc : tell the daemon to manage path group failback, or
+# # or not to. 0 means immediate failback, values >0
+# # means deffered failback expressed in seconds.
# # values : manual|immediate|n > 0
# # default : manual
# #
# failback immediate
#
# #
+# # name : rr_weight
+# # scope : multipath
+# # desc : if set to priorities the multipath configurator will
+# # assign path weights as "path prio * rr_min_io"
+# # values : priorities|uniform
+# # default : uniform
+# #
+# rr_weight priorities
+#
+# #
# # name : no_path_retry
# # scope : multipath & multipathd
-# # desc : tell the number of retries until disable queueing, or
-# # "fail" means immediate failure (no queueing),
+# # desc : tell the number of retries until disable queueing,
+# # or "fail" means immediate failure (no queueing),
# # "queue" means never stop queueing
# # values : queue|fail|n (>0)
# # default : (null)
@@ -384,11 +411,15 @@
# # scope : multipath
# # desc : path grouping policy to apply to multipath hosted
# # by this storage controller
-# # values : failover = 1 path per priority group
-# # multibus = all valid paths in 1 priority
-# # group
-# # group_by_serial = 1 priority group per detected
-# # serial number
+# # values : failover = 1 path per priority group
+# # multibus = all valid paths in 1 priority
+# # group
+# # group_by_serial = 1 priority group per detected
+# # serial number
+# # group_by_prio = 1 priority group per path
+# # priority value
+# # group_by_node_name = 1 priority group per target
+# # node name
# # default : failover
# #
# path_grouping_policy multibus
@@ -398,7 +429,7 @@
# # scope : multipath
# # desc : the program and args to callout to obtain a unique
# # path identifier. Absolute path required
-# # default : /sbin/scsi_id -g -u -s
+# # default : "/sbin/scsi_id -g -u -s /block/%n"
# #
# getuid_callout "/sbin/scsi_id -g -u -s /block/%n"
#
@@ -417,7 +448,8 @@
# # name : path_checker
# # scope : multipathd
# # desc : path checking alorithm to use to check path state
-# # values : readsector0, tur
+# # values : directio|tur|hp_sw|rdac|emc_clariion|readsector0|
+# # cciss_tur
# # default : readsector0
# #
# path_checker readsector0
@@ -432,6 +464,49 @@
# path_selector "round-robin 0"
#
# #
+# # name : features
+# # scope : multipath
+# # desc : The default extra features of multipath devices. The
+# # only existing feature currently is queue_if_no_path,
+# # which is the same as setting no_path_retry to queue.
+# # values : "1 queue_if_no_path"
+# # default : (null)
+# #
+# features "1 queue_if_no_path"
+#
+# #
+# # name : hardware_handler
+# # scope : multipath
+# # desc : If set, it specifies a module that will be used to
+# # perform hardware specific actions when switching
+# # path groups or handling IO errors
+# # values : "0"|"1 emc"|"1 hp-sw"|"1 rdac"
+# # default : "0"
+# #
+# hardware_handler "1 emc"
+#
+# #
+# # name : rr_weight
+# # scope : multipath
+# # desc : if set to priorities the multipath configurator will
+# # assign path weights as "path prio * rr_min_io"
+# # values : priorities|uniform
+# # default : uniform
+# #
+# rr_weight priorities
+#
+# #
+# # name : no_path_retry
+# # scope : multipath & multipathd
+# # desc : tell the number of retries until disable queueing,
+# # or "fail" means immediate failure (no queueing),
+# # "queue" means never stop queueing
+# # values : queue|fail|n (>0)
+# # default : (null)
+# #
+# #no_path_retry queue
+#
+# #
# # name : failback
# # scope : multipathd
# # desc : tell the daemon to manage path group failback, or not to.
--- multipath-tools/libmultipath/callout.c 2006/06/06 18:32:43 1.5
+++ multipath-tools/libmultipath/callout.c 2009/01/16 22:47:31 1.5.2.1
@@ -64,9 +64,10 @@

retval = pipe(fds);

- if (retval != 0)
+ if (retval != 0) {
+ condlog(0, "error creating pipe for callout: %s", strerror(errno));
return -1;
-
+ }

pid = fork();

@@ -79,9 +80,12 @@
dup(fds[1]);

retval = execv(argv[0], argv);
-
+ condlog(0, "error execing %s : %s", argv[0], strerror(errno));
exit(-1);
case -1:
+ condlog(0, "fork failed: %s", strerror(errno));
+ close(fds[0]);
+ close(fds[1]);
return -1;
default:
/* parent reads from fds[0] */
@@ -95,13 +99,16 @@

i += count;
if (i >= len-1) {
+ condlog(0, "not enough space for response from %s", argv[0]);
retval = -1;
break;
}
}

- if (count < 0)
+ if (count < 0) {
+ condlog(0, "no response from %s", argv[0]);
retval = -1;
+ }

if (i > 0 && value[i-1] == '
')
i--;
@@ -110,8 +117,18 @@
wait(&status);
close(fds[0]);

- if (!WIFEXITED(status) || (WEXITSTATUS(status) != 0))
- retval = -1;
+ retval = -1;
+ if (WIFEXITED(status)) {
+ status = WEXITSTATUS(status);
+ if (status == 0)
+ retval = 0;
+ else
+ condlog(0, "%s exitted with %d", argv[0], status);
+ }
+ else if (WIFSIGNALED(status))
+ condlog(0, "%s was terminated by signal %d", argv[0], WTERMSIG(status));
+ else
+ condlog(0, "%s terminated abnormally", argv[0]);
}
return retval;
}

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Old 01-27-2010, 09:33 PM
 
Default multipath-tools ./multipath.conf.annotated lib ...

CVSROOT: /cvs/dm
Module name: multipath-tools
Branch: RHEL5_FC6
Changes by: bmarzins@sourceware.org 2010-01-27 22:33:29

Modified files:
. : multipath.conf.annotated
libmultipath : discovery.c propsel.c

Log message:
Make checker_timeout be in seconds.

Patches:
http://sourceware.org/cgi-bin/cvsweb.cgi/multipath-tools/multipath.conf.annotated.diff?cvsroot=dm&only_with _tag=RHEL5_FC6&r1=1.18.2.14&r2=1.18.2.15
http://sourceware.org/cgi-bin/cvsweb.cgi/multipath-tools/libmultipath/discovery.c.diff?cvsroot=dm&only_with_tag=RHEL5_FC 6&r1=1.32.2.12&r2=1.32.2.13
http://sourceware.org/cgi-bin/cvsweb.cgi/multipath-tools/libmultipath/propsel.c.diff?cvsroot=dm&only_with_tag=RHEL5_FC6& r1=1.11.2.4&r2=1.11.2.5

--- multipath-tools/multipath.conf.annotated 2009/08/31 18:43:18 1.18.2.14
+++ multipath-tools/multipath.conf.annotated 2010/01/27 22:33:28 1.18.2.15
@@ -219,7 +219,15 @@
# # default : determined by the process
# gid 0
#
-
+# #
+# # name : checker_timeout
+# # scope : multipath & multipathd
+# # desc : The timeout to use for path checkers that issue scsi
+# # commands with an explicit timeout, in seconds.
+# # values : n > 0
+# # default : taken for /sys/block/sd<x>/device/timeout
+# checker_timeout 60
+#
#}
#
##
--- multipath-tools/libmultipath/discovery.c 2010/01/27 17:21:48 1.32.2.12
+++ multipath-tools/libmultipath/discovery.c 2010/01/27 22:33:29 1.32.2.13
@@ -262,7 +262,7 @@
if (r != 1)
return 1;

- *timeout = t;
+ *timeout = t * 1000;
return 0;
out:
sysfs_close_attribute(attr);
--- multipath-tools/libmultipath/propsel.c 2010/01/27 16:46:48 1.11.2.4
+++ multipath-tools/libmultipath/propsel.c 2010/01/27 22:33:29 1.11.2.5
@@ -235,16 +235,16 @@
pp->dev, checker_name(c));
out:
if (conf->checker_timeout) {
- c->timeout = conf->checker_timeout;
- condlog(3, "%s: checker timeout = %u (config file default)",
+ c->timeout = conf->checker_timeout * 1000;
+ condlog(3, "%s: checker timeout = %u ms (config file default)",
pp->dev, c->timeout);
}
else if (sysfs_get_timeout(sysfs_path, pp->dev, &c->timeout) == 0)
- condlog(3, "%s: checker timeout = %u (sysfs setting)",
+ condlog(3, "%s: checker timeout = %u ms (sysfs setting)",
pp->dev, c->timeout);
else {
c->timeout = DEF_TIMEOUT;
- condlog(3, "%s: checker timeout = %u (internal default)",
+ condlog(3, "%s: checker timeout = %u ms (internal default)",
pp->dev, c->timeout);
}
return 0;

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Old 04-08-2010, 07:31 PM
 
Default multipath-tools ./multipath.conf.annotated lib ...

CVSROOT: /cvs/dm
Module name: multipath-tools
Branch: RHEL5_FC6
Changes by: bmarzins@sourceware.org 2010-04-08 19:31:50

Modified files:
. : multipath.conf.annotated
libmultipath : config.h configure.c
multipath : main.c

Log message:
Fix for bz #579789. Add a -q option to multipath to disable queueing,
regardless of the configuration setting. On boot, if a multipath device with
no useable paths and queue_if_no_path is created, it can cause a hang if IO
happens to it before multipathd is started. Using the -q option during boot
will cause multipath to fail the IO if no paths are up, until multipathd is
started.

Patches:
http://sourceware.org/cgi-bin/cvsweb.cgi/multipath-tools/multipath.conf.annotated.diff?cvsroot=dm&only_with _tag=RHEL5_FC6&r1=1.18.2.15&r2=1.18.2.16
http://sourceware.org/cgi-bin/cvsweb.cgi/multipath-tools/libmultipath/config.h.diff?cvsroot=dm&only_with_tag=RHEL5_FC6&r 1=1.18.2.9&r2=1.18.2.10
http://sourceware.org/cgi-bin/cvsweb.cgi/multipath-tools/libmultipath/configure.c.diff?cvsroot=dm&only_with_tag=RHEL5_FC 6&r1=1.2.2.6&r2=1.2.2.7
http://sourceware.org/cgi-bin/cvsweb.cgi/multipath-tools/multipath/main.c.diff?cvsroot=dm&only_with_tag=RHEL5_FC6&r1= 1.44.2.7&r2=1.44.2.8

--- multipath-tools/multipath.conf.annotated 2010/01/27 22:33:28 1.18.2.15
+++ multipath-tools/multipath.conf.annotated 2010/04/08 19:31:49 1.18.2.16
@@ -84,7 +84,8 @@
# # name : path_checker
# # scope : multipath & multipathd
# # desc : the default method used to determine the paths' state
-# # values : directio|tur|hp_sw|rdac|emc_clariion|readsector0|c ciss_tur
+# # values : directio|tur|hp_sw|rdac|emc_clariion|readsector0|c ciss_tur|
+# # hp_tur
# # default : readsector0
# #
# #path_checker readsector0
@@ -484,7 +485,7 @@
# # scope : multipathd
# # desc : path checking alorithm to use to check path state
# # values : directio|tur|hp_sw|rdac|emc_clariion|readsector0|
-# # cciss_tur
+# # cciss_tur|hp_tur
# # default : readsector0
# #
# path_checker readsector0
--- multipath-tools/libmultipath/config.h 2010/01/27 16:46:48 1.18.2.9
+++ multipath-tools/libmultipath/config.h 2010/04/08 19:31:49 1.18.2.10
@@ -78,6 +78,7 @@
int flush_on_last_del;
int queue_without_daemon;
int checker_timeout;
+ int override_queueing;
uid_t uid;
gid_t gid;
mode_t mode;
--- multipath-tools/libmultipath/configure.c 2009/12/04 21:19:51 1.2.2.6
+++ multipath-tools/libmultipath/configure.c 2010/04/08 19:31:49 1.2.2.7
@@ -537,7 +537,9 @@
if (r == DOMAP_DRY)
continue;

- if (mpp->no_path_retry != NO_PATH_RETRY_UNDEF) {
+ if (conf->override_queueing)
+ dm_queue_if_no_path(mpp->alias, 0);
+ else if (mpp->no_path_retry != NO_PATH_RETRY_UNDEF) {
if (mpp->no_path_retry == NO_PATH_RETRY_FAIL)
dm_queue_if_no_path(mpp->alias, 0);
else
--- multipath-tools/multipath/main.c 2009/05/04 18:12:07 1.44.2.7
+++ multipath-tools/multipath/main.c 2010/04/08 19:31:49 1.44.2.8
@@ -1,7 +1,7 @@
/*
* Soft: multipath device mapper target autoconfig
*
- * Version: $Id: main.c,v 1.44.2.7 2009/05/04 18:12:07 bmarzins Exp $
+ * Version: $Id: main.c,v 1.44.2.8 2010/04/08 19:31:49 bmarzins Exp $
*
* Author: Christophe Varoqui
*
@@ -84,6 +84,7 @@
" 2 default verbosity
"
" 3 print debug information
"
" -h print this usage text
"
+ " -q force all maps to turn off queue_if_no_path
"
" -b file bindings file location
"
" -d dry run, do not create or update devmaps
"
" -l show multipath topology (sysfs and DM info)
"
@@ -324,7 +325,7 @@
if (load_config(DEFAULT_CONFIGFILE))
exit(1);

- while ((arg = getopt(argc, argv, ":dhl::FfM:v:b:r")) != EOF ) {
+ while ((arg = getopt(argc, argv, ":dhl::FfM:v:b:rq")) != EOF ) {
switch(arg) {
case 1: printf("optarg : %s
",optarg);
break;
@@ -335,6 +336,9 @@

conf->verbosity = atoi(optarg);
break;
+ case 'q':
+ conf->override_queueing = 1;
+ break;
case 'b':
if (conf->bindings_file)
FREE(conf->bindings_file);

--
dm-devel mailing list
dm-devel@redhat.com
https://www.redhat.com/mailman/listinfo/dm-devel
 
Old 02-18-2011, 05:27 PM
 
Default multipath-tools ./multipath.conf.annotated lib ...

CVSROOT: /cvs/dm
Module name: multipath-tools
Branch: RHEL5_FC6
Changes by: bmarzins@sourceware.org 2011-02-18 18:27:00

Modified files:
. : multipath.conf.annotated
libmultipath : config.h configure.c dict.c discovery.c
discovery.h propsel.c propsel.h structs.h
util.c util.h
multipathd : copy.c main.c

Log message:
Backport dev_loss_tmo and fast_io_fail_tmo multipath.conf options to RHEL5.
Fix for bz #672575

Patches:
http://sourceware.org/cgi-bin/cvsweb.cgi/multipath-tools/multipath.conf.annotated.diff?cvsroot=dm&only_with _tag=RHEL5_FC6&r1=1.18.2.17&r2=1.18.2.18
http://sourceware.org/cgi-bin/cvsweb.cgi/multipath-tools/libmultipath/config.h.diff?cvsroot=dm&only_with_tag=RHEL5_FC6&r 1=1.18.2.13&r2=1.18.2.14
http://sourceware.org/cgi-bin/cvsweb.cgi/multipath-tools/libmultipath/configure.c.diff?cvsroot=dm&only_with_tag=RHEL5_FC 6&r1=1.2.2.10&r2=1.2.2.11
http://sourceware.org/cgi-bin/cvsweb.cgi/multipath-tools/libmultipath/dict.c.diff?cvsroot=dm&only_with_tag=RHEL5_FC6&r1= 1.17.2.16&r2=1.17.2.17
http://sourceware.org/cgi-bin/cvsweb.cgi/multipath-tools/libmultipath/discovery.c.diff?cvsroot=dm&only_with_tag=RHEL5_FC 6&r1=1.32.2.17&r2=1.32.2.18
http://sourceware.org/cgi-bin/cvsweb.cgi/multipath-tools/libmultipath/discovery.h.diff?cvsroot=dm&only_with_tag=RHEL5_FC 6&r1=1.14.2.5&r2=1.14.2.6
http://sourceware.org/cgi-bin/cvsweb.cgi/multipath-tools/libmultipath/propsel.c.diff?cvsroot=dm&only_with_tag=RHEL5_FC6& r1=1.11.2.5&r2=1.11.2.6
http://sourceware.org/cgi-bin/cvsweb.cgi/multipath-tools/libmultipath/propsel.h.diff?cvsroot=dm&only_with_tag=RHEL5_FC6& r1=1.5.2.2&r2=1.5.2.3
http://sourceware.org/cgi-bin/cvsweb.cgi/multipath-tools/libmultipath/structs.h.diff?cvsroot=dm&only_with_tag=RHEL5_FC6& r1=1.18.2.8&r2=1.18.2.9
http://sourceware.org/cgi-bin/cvsweb.cgi/multipath-tools/libmultipath/util.c.diff?cvsroot=dm&only_with_tag=RHEL5_FC6&r1= 1.5.2.1&r2=1.5.2.2
http://sourceware.org/cgi-bin/cvsweb.cgi/multipath-tools/libmultipath/util.h.diff?cvsroot=dm&only_with_tag=RHEL5_FC6&r1= 1.4.2.1&r2=1.4.2.2
http://sourceware.org/cgi-bin/cvsweb.cgi/multipath-tools/multipathd/copy.c.diff?cvsroot=dm&only_with_tag=RHEL5_FC6&r1= 1.5.2.3&r2=1.5.2.4
http://sourceware.org/cgi-bin/cvsweb.cgi/multipath-tools/multipathd/main.c.diff?cvsroot=dm&only_with_tag=RHEL5_FC6&r1= 1.69.2.31&r2=1.69.2.32

--- multipath-tools/multipath.conf.annotated 2010/09/03 22:23:22 1.18.2.17
+++ multipath-tools/multipath.conf.annotated 2011/02/18 18:27:00 1.18.2.18
@@ -240,6 +240,26 @@
# # default : taken for /sys/block/sd<x>/device/timeout
# checker_timeout 60
#
+# #
+# # name : fast_io_fail_tmo
+# # scope : multipath & multipathd
+# # desc : The number of seconds the scsi layer will wait after a
+# # problem has been detected on a FC remote port before failing
+# # IO to devices on that remote port.
+# # values : off | n >= 0 (smaller than dev_loss_tmo)
+# # default : determined by the OS
+# fast_io_fail_tmo 5
+#
+# #
+# # name : dev_loss_tmo
+# # scope : multipath & multipathd
+# # desc : The number of seconds the scsi layer will wait after a
+# # problem has been detected on a FC remote port before
+# # removing it from the system.
+# # values : n > 0
+# # default : determined by the OS
+# dev_loss_tmo 600
+#
#}
#
##
@@ -590,6 +610,24 @@
# # default : none
# #
# product_blacklist LUN_Z
+#
+# #
+# # name : fast_io_fail_tmo
+# # scope : multipath & multipathd
+# # desc : The number of seconds the scsi layer will wait after
+# # a problem has been detected on a FC remote port
+# # before failing IO to devices on that remote port.
+# # values : off | n >= 0 (smaller than dev_loss_tmo)
+# fast_io_fail_tmo 5
+#
+# #
+# # name : dev_loss_tmo
+# # scope : multipath & multipathd
+# # desc : The number of seconds the scsi layer will wait after
+# # a problem has been detected on a FC remote port
+# # before removing it from the system.
+# # values : n > 0
+# dev_loss_tmo 600
# }
# device {
# vendor "COMPAQ "
--- multipath-tools/libmultipath/config.h 2010/09/08 21:40:29 1.18.2.13
+++ multipath-tools/libmultipath/config.h 2011/02/18 18:27:00 1.18.2.14
@@ -30,6 +30,8 @@
int minio;
int pg_timeout;
int flush_on_last_del;
+ int fast_io_fail;
+ unsigned int dev_loss;
struct checker * checker;
char * bl_product;
};
@@ -81,6 +83,8 @@
int allow_queueing;
int pg_prio_calc;
int log_checker_err;
+ int fast_io_fail;
+ unsigned int dev_loss;
uid_t uid;
gid_t gid;
mode_t mode;
--- multipath-tools/libmultipath/configure.c 2011/02/16 19:00:51 1.2.2.10
+++ multipath-tools/libmultipath/configure.c 2011/02/18 18:27:00 1.2.2.11
@@ -35,6 +35,7 @@
#include "dict.h"
#include "alias.h"
#include "devmapper.h"
+#include "util.h"

extern int
setup_map (struct multipath * mpp)
@@ -62,7 +63,10 @@
select_minio(mpp);
select_no_path_retry(mpp);
select_pg_timeout(mpp);
+ select_fast_io_fail(mpp);
+ select_dev_loss(mpp);

+ sysfs_set_scsi_tmo(mpp);
/*
* assign paths to path groups -- start with no groups and all paths
* in mpp->paths
@@ -635,7 +639,7 @@
return NULL;

if (dev_type == DEV_DEVNODE) {
- basename(dev, buff);
+ basenamecpy(dev, buff);
pp = find_path_by_dev(pathvec, buff);

if (!pp) {
--- multipath-tools/libmultipath/dict.c 2010/09/10 14:25:20 1.17.2.16
+++ multipath-tools/libmultipath/dict.c 2011/02/18 18:27:00 1.17.2.17
@@ -35,6 +35,35 @@
}

static int
+def_fast_io_fail_handler(vector strvec)
+{
+ char * buff;
+
+ buff = set_value(strvec);
+ if (strlen(buff) == 3 && !strcmp(buff, "off"))
+ conf->fast_io_fail = -1;
+ else if (sscanf(buff, "%d", &conf->fast_io_fail) != 1 ||
+ conf->fast_io_fail < -1)
+ conf->fast_io_fail = 0;
+
+ FREE(buff);
+ return 0;
+}
+
+static int
+def_dev_loss_handler(vector strvec)
+{
+ char * buff;
+
+ buff = set_value(strvec);
+ if (sscanf(buff, "%u", &conf->dev_loss) != 1)
+ conf->dev_loss = 0;
+
+ FREE(buff);
+ return 0;
+}
+
+static int
verbosity_handler(vector strvec)
{
char * buff;
@@ -694,6 +723,37 @@
}

static int
+hw_fast_io_fail_handler(vector strvec)
+{
+ char * buff;
+ struct hwentry * hwe = VECTOR_LAST_SLOT(conf->hwtable);
+
+ buff = set_value(strvec);
+ if (strlen(buff) == 3 && !strcmp(buff, "off"))
+ hwe->fast_io_fail = -1;
+ else if (sscanf(buff, "%d", &hwe->fast_io_fail) != 1 ||
+ hwe->fast_io_fail < -1)
+ hwe->fast_io_fail = 0;
+
+ FREE(buff);
+ return 0;
+}
+
+static int
+hw_dev_loss_handler(vector strvec)
+{
+ char * buff;
+ struct hwentry * hwe = VECTOR_LAST_SLOT(conf->hwtable);
+
+ buff = set_value(strvec);
+ if (sscanf(buff, "%u", &hwe->dev_loss) != 1)
+ hwe->dev_loss = 0;
+
+ FREE(buff);
+ return 0;
+}
+
+static int
hw_pgpolicy_handler(vector strvec)
{
char * buff;
@@ -1502,6 +1562,26 @@
}

static int
+snprint_hw_fast_io_fail(char * buff, int len, void * data)
+{
+ struct hwentry * hwe = (struct hwentry *)data;
+ if (!hwe->fast_io_fail)
+ return 0;
+ if (hwe->fast_io_fail == -1)
+ return snprintf(buff, len, "off");
+ return snprintf(buff, len, "%d", hwe->fast_io_fail);
+}
+
+static int
+snprint_hw_dev_loss(char * buff, int len, void * data)
+{
+ struct hwentry * hwe = (struct hwentry *)data;
+ if (!hwe->dev_loss)
+ return 0;
+ return snprintf(buff, len, "%u", hwe->dev_loss);
+}
+
+static int
snprint_hw_vendor (char * buff, int len, void * data)
{
struct hwentry * hwe = (struct hwentry *)data;
@@ -1726,6 +1806,24 @@
}

static int
+snprint_def_fast_io_fail(char * buff, int len, void * data)
+{
+ if (!conf->fast_io_fail)
+ return 0;
+ if (conf->fast_io_fail == -1)
+ return snprintf(buff, len, "off");
+ return snprintf(buff, len, "%d", conf->fast_io_fail);
+}
+
+static int
+snprint_def_dev_loss(char * buff, int len, void * data)
+{
+ if (!conf->dev_loss)
+ return 0;
+ return snprintf(buff, len, "%u", conf->dev_loss);
+}
+
+static int
snprint_def_verbosity (char * buff, int len, void * data)
{
return snprintf(buff, len, "%i", conf->verbosity);
@@ -2035,6 +2133,8 @@
install_keyword("mode", &def_mode_handler, &snprint_def_mode);
install_keyword("uid", &def_uid_handler, &snprint_def_uid);
install_keyword("gid", &def_gid_handler, &snprint_def_gid);
+ install_keyword("fast_io_fail_tmo", &def_fast_io_fail_handler, &snprint_def_fast_io_fail);
+ install_keyword("dev_loss_tmo", &def_dev_loss_handler, &snprint_def_dev_loss);
__deprecated install_keyword("default_selector", &def_selector_handler, NULL);
__deprecated install_keyword("default_path_grouping_policy", &def_pgpolicy_handler, NULL);
__deprecated install_keyword("default_getuid_callout", &def_getuid_callout_handler, NULL);
@@ -2089,6 +2189,8 @@
install_keyword("rr_min_io", &hw_minio_handler, &snprint_hw_rr_min_io);
install_keyword("flush_on_last_del", &hw_flush_on_last_del_handler, &snprint_hw_flush_on_last_del);
install_keyword("pg_timeout", &hw_pg_timeout_handler, &snprint_hw_pg_timeout);
+ install_keyword("fast_io_fail_tmo", &hw_fast_io_fail_handler, &snprint_hw_fast_io_fail);
+ install_keyword("dev_loss_tmo", &hw_dev_loss_handler, &snprint_hw_dev_loss);
install_sublevel_end();

install_keyword_root("multipaths", &multipaths_handler);
--- multipath-tools/libmultipath/discovery.c 2010/11/30 17:21:19 1.32.2.17
+++ multipath-tools/libmultipath/discovery.c 2011/02/18 18:27:00 1.32.2.18
@@ -11,6 +11,7 @@
#include <errno.h>
#include <sysfs/dlist.h>
#include <sysfs/libsysfs.h>
+#include <libgen.h>

#include <checkers.h>

@@ -477,6 +478,123 @@
}

static int
+find_rport_id(struct path *pp)
+{
+ char attr_path[SYSFS_PATH_SIZE];
+ char link_path[SYSFS_PATH_SIZE];
+ char *dir, *base;
+ int host, channel, rport_id = -1;
+ int len;
+
+ if (safe_sprintf(attr_path,
+ "%s/class/fc_transport/target%i:%i:%i/device",
+ sysfs_path, pp->sg_id.host_no, pp->sg_id.channel,
+ pp->sg_id.scsi_id)) {
+ condlog(0, "attr_path too small for target");
+ return -1;
+ }
+ len = readlink(attr_path, link_path, SYSFS_PATH_SIZE);
+ if (len < 0) {
+ condlog(3, "failed to read link '%s' : %s", attr_path,
+ strerror(errno));
+ return -1;
+ }
+ link_path[(len < SYSFS_PATH_SIZE)? len : len - 1] = '';
+ dir = link_path;
+ do {
+ base = basename(dir);
+ dir = dirname(dir);
+
+ if (sscanf(base, "rport-%d:%d-%d", &host,
+ &channel, &rport_id) == 3)
+ break;
+ } while (strcmp(dir, "/") && strcmp(dir, "."));
+
+ if (rport_id < 0)
+ return -1;
+
+ return rport_id;
+}
+
+
+static int
+sysfs_attr_set_value(const char *devpath, const char *attr_name,
+ const char *value)
+{
+ char attr_path[SYSFS_PATH_SIZE];
+ struct sysfs_attribute * attr;
+ int ret = -1;
+
+ if (safe_sprintf(attr_path, "%s%s/%s", sysfs_path, devpath,
+ attr_name)) {
+ condlog(0, "sysfs_path %s%s/%s too large", sysfs_path,
+ devpath, attr_name);
+ return ret;
+ }
+ attr = sysfs_open_attribute(attr_path);
+ if (!attr) {
+ condlog(0, "failed to open %s : %s", attr_path,
+ strerror(errno));
+ return ret;
+ }
+ if (sysfs_write_attribute(attr, value, strlen(value)) < 0) {
+ condlog(0, "failed to write '%s' to %s : %s", value, attr_path,
+ strerror(errno));
+ goto out;
+ }
+ ret = 0;
+out:
+ sysfs_close_attribute(attr);
+ return ret;
+}
+
+int
+sysfs_set_scsi_tmo (struct multipath *mpp)
+{
+ char attr_path[SYSFS_PATH_SIZE];
+ struct path *pp;
+ int i;
+ char value[11];
+ int rport_id;
+
+ if (!mpp->dev_loss && !mpp->fast_io_fail)
+ return 0;
+ vector_foreach_slot(mpp->paths, pp, i) {
+ rport_id = find_rport_id(pp);
+ if (rport_id < 0) {
+ condlog(0, "failed to find rport_id for target%d:%d:%d",
+ pp->sg_id.host_no, pp->sg_id.channel,
+ pp->sg_id.scsi_id);
+ return 1;
+ }
+ if (safe_snprintf(attr_path, SYSFS_PATH_SIZE,
+ "/class/fc_remote_ports/rport-%d:%d-%d",
+ pp->sg_id.host_no, pp->sg_id.channel,
+ rport_id)) {
+ condlog(0, "attr_path '/class/fc_remote_ports/rport-%d:%d-%d' too large", pp->sg_id.host_no, pp->sg_id.channel, rport_id);
+
+ return 1;
+ }
+ if (mpp->fast_io_fail){
+ if (mpp->fast_io_fail == -1)
+ sprintf(value, "off");
+ else
+ snprintf(value, 11, "%u", mpp->fast_io_fail);
+ if (sysfs_attr_set_value(attr_path, "fast_io_fail_tmo",
+ value))
+ return 1;
+ }
+ if (mpp->dev_loss){
+ snprintf(value, 11, "%u", mpp->dev_loss);
+ if (sysfs_attr_set_value(attr_path, "dev_loss_tmo",
+ value))
+ return 1;
+ }
+ }
+ return 0;
+}
+
+static int
sysfs_get_bus (char * sysfs_path, struct path * pp)
{
struct sysfs_device *sdev;
@@ -590,7 +708,7 @@
if (0 > sysfs_get_link(attr_path, attr_buff, sizeof(attr_buff)))
return 1;

- basename(attr_buff, attr_path);
+ basenamecpy(attr_buff, attr_path);

sscanf(attr_path, "%i:%i:%i:%i",
&pp->sg_id.host_no,
@@ -674,7 +792,7 @@
if (0 > sysfs_get_link(attr_path, attr_buff, sizeof(attr_buff)))
return 1;

- basename(attr_buff, attr_path);
+ basenamecpy(attr_buff, attr_path);
pp->sg_id.lun = 0;
sscanf(attr_path, "%i.%i.%x",
&pp->sg_id.host_no,
--- multipath-tools/libmultipath/discovery.h 2010/09/03 03:46:12 1.14.2.5
+++ multipath-tools/libmultipath/discovery.h 2011/02/18 18:27:00 1.14.2.6
@@ -33,9 +33,9 @@
int sysfs_get_state (char * sysfs_path, char * dev, char * buff, int len);
int sysfs_get_size (char * sysfs_path, char * dev, unsigned long long *);
int sysfs_get_timeout (char * sysfs_path, char * dev, unsigned int *timeout);
+int sysfs_set_scsi_tmo (struct multipath *mpp);
int path_discovery (vector pathvec, struct config * conf, int flag);

-void basename (char *, char *);
int do_tur (char *);
int devt2devname (char *, char *);
int pathinfo (struct path *, vector hwtable, int mask);
--- multipath-tools/libmultipath/propsel.c 2010/01/27 22:33:29 1.11.2.5
+++ multipath-tools/libmultipath/propsel.c 2011/02/18 18:27:00 1.11.2.6
@@ -479,3 +479,45 @@
condlog(3, "pg_timeout = NONE (internal default)");
return 0;
}
+
+extern int
+select_fast_io_fail(struct multipath *mp)
+{
+ if (mp->hwe && mp->hwe->fast_io_fail) {
+ mp->fast_io_fail = mp->hwe->fast_io_fail;
+ if (mp->fast_io_fail == -1)
+ condlog(3, "%s: fast_io_fail_tmo = off (controller default)", mp->alias);
+ else
+ condlog(3, "%s: fast_io_fail_tmo = %d (controller default)", mp->alias, mp->fast_io_fail);
+ return 0;
+ }
+ if (conf->fast_io_fail) {
+ mp->fast_io_fail = conf->fast_io_fail;
+ if (mp->fast_io_fail == -1)
+ condlog(3, "%s: fast_io_fail_tmo = off (config file default)", mp->alias);
+ else
+ condlog(3, "%s: fast_io_fail_tmo = %d (config file default)", mp->alias, mp->fast_io_fail);
+ return 0;
+ }
+ mp->fast_io_fail = 0;
+ return 0;
+}
+
+extern int
+select_dev_loss(struct multipath *mp)
+{
+ if (mp->hwe && mp->hwe->dev_loss) {
+ mp->dev_loss = mp->hwe->dev_loss;
+ condlog(3, "%s: dev_loss_tmo = %u (controller default)",
+ mp->alias, mp->dev_loss);
+ return 0;
+ }
+ if (conf->dev_loss) {
+ mp->dev_loss = conf->dev_loss;
+ condlog(3, "%s: dev_loss_tmo = %u (config file default)",
+ mp->alias, mp->dev_loss);
+ return 0;
+ }
+ mp->dev_loss = 0;
+ return 0;
+}
--- multipath-tools/libmultipath/propsel.h 2008/09/04 20:09:48 1.5.2.2
+++ multipath-tools/libmultipath/propsel.h 2011/02/18 18:27:00 1.5.2.3
@@ -15,3 +15,5 @@
int select_uid(struct multipath *mp);
int select_gid(struct multipath *mp);
int select_flush_on_last_del(struct multipath *mp);
+int select_fast_io_fail(struct multipath *mp);
+int select_dev_loss(struct multipath *mp);
--- multipath-tools/libmultipath/structs.h 2010/09/08 21:40:30 1.18.2.8
+++ multipath-tools/libmultipath/structs.h 2011/02/18 18:27:00 1.18.2.9
@@ -169,6 +169,8 @@
int pg_timeout;
int attribute_flags;
int flush_on_last_del;
+ int fast_io_fail;
+ unsigned int dev_loss;
uid_t uid;
gid_t gid;
mode_t mode;
--- multipath-tools/libmultipath/util.c 2007/06/18 17:37:18 1.5.2.1
+++ multipath-tools/libmultipath/util.c 2011/02/18 18:27:00 1.5.2.2
@@ -39,7 +39,7 @@
}

void
-basename (char * str1, char * str2)
+basenamecpy (char * str1, char * str2)
{
char *p = str1 + (strlen(str1) - 1);

--- multipath-tools/libmultipath/util.h 2007/06/18 17:37:18 1.4.2.1
+++ multipath-tools/libmultipath/util.h 2011/02/18 18:27:00 1.4.2.2
@@ -3,7 +3,7 @@

int strcmp_chomp(char *, char *);
void strchop(char *);
-void basename (char * src, char * dst);
+void basenamecpy (char * src, char * dst);
int filepresent (char * run);
int get_word (char * sentence, char ** word);
void cciss_basename (char * , char * );
--- multipath-tools/multipathd/Attic/copy.c 2009/08/19 21:52:40 1.5.2.3
+++ multipath-tools/multipathd/Attic/copy.c 2011/02/18 18:27:00 1.5.2.4
@@ -91,7 +91,7 @@
char dst[FILESIZE];
char filename[FILESIZE];

- basename(src, filename);
+ basenamecpy(src, filename);
if (FILESIZE <= snprintf(dst, FILESIZE, "%s/%s", dstdir, filename)) {
condlog(0, "[copy.c] filename buffer overflow : %s ", filename);
return -1;
--- multipath-tools/multipathd/main.c 2010/12/07 06:02:23 1.69.2.31
+++ multipath-tools/multipathd/main.c 2011/02/18 18:27:00 1.69.2.32
@@ -695,7 +695,7 @@
if (uev_discard(uev->devpath))
return 0;

- basename(uev->devpath, devname);
+ basenamecpy(uev->devpath, devname);
lock(vecs->lock);

/*

--
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