We encounter the following case:
@ After adding a multipaths section into /etc/multipath.conf to specify 'alias'
@ and other attributes for a particular multipath device and
@ reloading/restarting the multipathd service, only renaming of the multipath
@ device is done, other attribute changes are ignored.
@
@ It is more evident if you directly run 'multipath -r' to reload devmap after
@ adding the 'multipaths' section with alias into /etc/multipath.conf.
@
@ When reload/restart multipathd service or 'multipath -r' again, new settings
@ can be applied right.
It's because that in select_action() when force_reload is set, if we also need
rename the mpp device, reload action won't be taken any more.
I did this patch by introducing a new action ACT_RENAME2 to group these two
action. Test passed. However, it seems to be a rough patch and I am not
certain if this bind is fine refering to dm_reassign. Please comment, Thanks.
Signed-off-by: Vaughan Cao <vaughan.cao@xxxxxxxxxx>
---
libmultipath/configure.c | 11 +++++++++++
libmultipath/configure.h | 1 +
2 files changed, 12 insertions(+)
diff --git a/libmultipath/configure.c b/libmultipath/configure.c
index 3ed6b55..7331f90 100644
--- a/libmultipath/configure.c
+++ b/libmultipath/configure.c
@@ -385,6 +385,8 @@ select_action (struct multipath * mpp, vector curmp, int force_reload)
cmpp->alias, mpp->alias);
strncpy(mpp->alias_old, cmpp->alias, WWID_SIZE);
mpp->action = ACT_RENAME;
+ if (force_reload)
+ mpp->action = ACT_RENAME2;
return;
}
mpp->action = ACT_CREATE;
@@ -623,6 +625,15 @@ domap (struct multipath * mpp, char * params)
r = dm_rename(mpp->alias_old, mpp->alias);
break;
+ case ACT_RENAME2:
+ r = dm_rename(mpp->alias_old, mpp->alias);
+ if (r) {
+ r = dm_addmap_reload(mpp, params);
+ if (r)
+ r = dm_simplecmd_noflush(DM_DEVICE_RESUME, mpp->alias, MPATH_UDEV_RELOAD_FLAG);
+ }
+ break;
+
default:
break;
}
diff --git a/libmultipath/configure.h b/libmultipath/configure.h
index b3a6bb8..c014b55 100644
--- a/libmultipath/configure.h
+++ b/libmultipath/configure.h
@@ -18,6 +18,7 @@ enum actions {
ACT_RENAME,
ACT_CREATE,
ACT_RESIZE,
+ ACT_RENAME2,
};
#define FLUSH_ONE 1
--
1.9.0
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