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c896fb |
---
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c896fb |
libmultipath/prioritizers/alua.c | 20 +++++++++++++++++++-
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c896fb |
libmultipath/propsel.c | 18 ++++++++++--------
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c896fb |
multipath/multipath.conf.5 | 19 ++++++++++++++++---
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c896fb |
3 files changed, 45 insertions(+), 12 deletions(-)
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c896fb |
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c896fb |
Index: multipath-tools-130222/libmultipath/prioritizers/alua.c
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c896fb |
===================================================================
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c896fb |
--- multipath-tools-130222.orig/libmultipath/prioritizers/alua.c
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c896fb |
+++ multipath-tools-130222/libmultipath/prioritizers/alua.c
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c896fb |
@@ -86,15 +86,33 @@ get_alua_info(int fd, struct alua_contex
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c896fb |
return rc;
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c896fb |
}
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c896fb |
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c896fb |
+int get_exclusive_perf_arg(char *args)
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c896fb |
+{
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c896fb |
+ char *ptr;
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c896fb |
+
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c896fb |
+ if (args == NULL)
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c896fb |
+ return 0;
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c896fb |
+ ptr = strstr(args, "exclusive_pref_bit");
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c896fb |
+ if (!ptr)
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c896fb |
+ return 0;
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c896fb |
+ if (ptr[18] != '\0' && ptr[18] != ' ' && ptr[18] != '\t')
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c896fb |
+ return 0;
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c896fb |
+ if (ptr != args && ptr[-1] != ' ' && ptr[-1] != '\t')
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c896fb |
+ return 0;
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c896fb |
+ return 1;
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c896fb |
+}
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c896fb |
+
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c896fb |
int getprio (struct path * pp, char * args)
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c896fb |
{
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c896fb |
int rc;
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c896fb |
int aas;
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c896fb |
int priopath;
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c896fb |
+ int exclusive_perf;
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c896fb |
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c896fb |
if (pp->fd < 0)
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c896fb |
return -ALUA_PRIO_NO_INFORMATION;
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c896fb |
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c896fb |
+ exclusive_perf = get_exclusive_perf_arg(args);
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c896fb |
rc = get_alua_info(pp->fd, pp->prio.context);
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c896fb |
if (rc >= 0) {
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c896fb |
aas = (rc & 0x0f);
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c896fb |
@@ -115,7 +133,7 @@ int getprio (struct path * pp, char * ar
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c896fb |
default:
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c896fb |
rc = 0;
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c896fb |
}
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c896fb |
- if (priopath && aas != AAS_OPTIMIZED)
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c896fb |
+ if (priopath && (aas != AAS_OPTIMIZED || exclusive_perf))
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c896fb |
rc += 80;
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c896fb |
} else {
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c896fb |
switch(-rc) {
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c896fb |
Index: multipath-tools-130222/libmultipath/propsel.c
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c896fb |
===================================================================
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c896fb |
--- multipath-tools-130222.orig/libmultipath/propsel.c
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c896fb |
+++ multipath-tools-130222/libmultipath/propsel.c
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c896fb |
@@ -420,17 +420,19 @@ select_prio (struct path * pp)
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c896fb |
if (prio_selected(p)) {
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c896fb |
condlog(3, "%s: prio = %s (detected setting)",
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c896fb |
pp->dev, prio_name(p));
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c896fb |
+ condlog(3, "%s: prio args = %s (detected setting)",
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c896fb |
+ pp->dev, prio_args(p));
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c896fb |
return 0;
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c896fb |
}
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c896fb |
}
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c896fb |
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c896fb |
- if ((mpe = find_mpe(pp->wwid))) {
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c896fb |
- if (mpe->prio_name) {
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c896fb |
- prio_get(p, mpe->prio_name, mpe->prio_args);
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c896fb |
- condlog(3, "%s: prio = %s (LUN setting)",
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c896fb |
- pp->dev, prio_name(p));
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c896fb |
- return 0;
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c896fb |
- }
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c896fb |
+ if ((mpe = find_mpe(pp->wwid)) && mpe->prio_name) {
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c896fb |
+ prio_get(p, mpe->prio_name, mpe->prio_args);
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c896fb |
+ condlog(3, "%s: prio = %s (LUN setting)",
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c896fb |
+ pp->dev, prio_name(p));
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c896fb |
+ condlog(3, "%s: prio args = %s (LUN setting)",
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c896fb |
+ pp->dev, prio_args(p));
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c896fb |
+ return 0;
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c896fb |
}
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c896fb |
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c896fb |
if (pp->hwe && pp->hwe->prio_name) {
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c896fb |
@@ -452,7 +454,7 @@ select_prio (struct path * pp)
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c896fb |
prio_get(p, DEFAULT_PRIO, DEFAULT_PRIO_ARGS);
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c896fb |
condlog(3, "%s: prio = %s (internal default)",
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c896fb |
pp->dev, DEFAULT_PRIO);
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c896fb |
- condlog(3, "%s: prio = %s (internal default)",
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c896fb |
+ condlog(3, "%s: prio args = %s (internal default)",
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c896fb |
pp->dev, DEFAULT_PRIO_ARGS);
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c896fb |
return 0;
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c896fb |
}
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c896fb |
Index: multipath-tools-130222/multipath/multipath.conf.5
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c896fb |
===================================================================
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c896fb |
--- multipath-tools-130222.orig/multipath/multipath.conf.5
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c896fb |
+++ multipath-tools-130222/multipath/multipath.conf.5
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c896fb |
@@ -182,7 +182,9 @@ Return a constant priority of \fI1\fR.
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c896fb |
Generate the path priority for EMC arrays.
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c896fb |
.TP
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c896fb |
.B alua
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c896fb |
-Generate the path priority based on the SCSI-3 ALUA settings.
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c896fb |
+Generate the path priority based on the SCSI-3 ALUA settings. This prioritizer
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c896fb |
+accepts the optional prio_arg
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c896fb |
+.I exclusive_pref_bit
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c896fb |
.TP
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c896fb |
.B ontap
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c896fb |
Generate the path priority for NetApp arrays.
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c896fb |
@@ -208,14 +210,25 @@ Default value is \fBconst\fR.
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c896fb |
.RE
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c896fb |
.TP
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c896fb |
.B prio_args
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|
c896fb |
-Arguments to pass to to the prio function. Currently only used with
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c896fb |
-.I weighted, which needs a value of the form
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c896fb |
+Arguments to pass to to the prio function. This only applies to certain
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c896fb |
+prioritizers
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c896fb |
+.RS
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c896fb |
+.TP 12
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c896fb |
+.B weighted
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c896fb |
+Needs a value of the form
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c896fb |
.I "<hbtl|devname> <regex1> <prio1> <regex2> <prio2> ..."
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|
c896fb |
.I hbtl
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|
c896fb |
regex can be of SCSI H:B:T:L format Ex: 1:0:.:. , *:0:0:.
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c896fb |
.I devname
|
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|
c896fb |
regex can be of device name format Ex: sda , sd.e
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c896fb |
.TP
|
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|
c896fb |
+.B alua
|
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c896fb |
+If
|
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c896fb |
+.I exclusive_pref_bit
|
|
|
c896fb |
+is set, paths with the TPGS pref bit set will always be in their own path
|
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c896fb |
+group.
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c896fb |
+.RE
|
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c896fb |
+.TP
|
|
|
c896fb |
.B features
|
|
|
c896fb |
Specify any device-mapper features to be used. Syntax is
|
|
|
c896fb |
.I num list
|