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64 lines
2.9 KiB
64 lines
2.9 KiB
--- |
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multipath/11-dm-mpath.rules | 34 ++++++++++++++++++++++++++++++++++ |
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multipath/Makefile | 2 ++ |
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2 files changed, 36 insertions(+) |
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Index: multipath-tools-130222/multipath/11-dm-mpath.rules |
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=================================================================== |
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--- /dev/null |
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+++ multipath-tools-130222/multipath/11-dm-mpath.rules |
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@@ -0,0 +1,34 @@ |
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+ACTION!="add|change", GOTO="mpath_end" |
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+ENV{DM_UDEV_RULES_VSN}!="?*", GOTO="mpath_end" |
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+ENV{DM_UUID}!="mpath-?*", GOTO="mpath_end" |
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+ |
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+# Do not initiate scanning if no path is available, |
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+# otherwise there would be a hang or IO error on access. |
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+# We'd like to avoid this, especially within udev processing. |
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+ENV{DM_NR_VALID_PATHS}!="?*", IMPORT{db}="DM_NR_VALID_PATHS" |
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+ENV{DM_NR_VALID_PATHS}=="0", ENV{DM_NOSCAN}="1" |
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+ |
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+# Also skip all foreign rules if no path is available. |
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+# Remember the original value of DM_DISABLE_OTHER_RULES_FLAG |
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+# and restore it back once we have at least one path available. |
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+IMPORT{db}="DM_DISABLE_OTHER_RULES_FLAG_OLD" |
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+ENV{DM_ACTION}=="PATH_FAILED",\ |
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+ ENV{DM_NR_VALID_PATHS}=="0",\ |
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+ ENV{DM_DISABLE_OTHER_RULES_FLAG_OLD}=="",\ |
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+ ENV{DM_DISABLE_OTHER_RULES_FLAG_OLD}="$env{DM_UDEV_DISABLE_OTHER_RULES_FLAG}",\ |
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+ ENV{DM_UDEV_DISABLE_OTHER_RULES_FLAG}="1" |
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+ENV{DM_ACTION}=="PATH_REINSTATED",\ |
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+ ENV{DM_NR_VALID_PATHS}=="1",\ |
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+ ENV{DM_UDEV_DISABLE_OTHER_RULES_FLAG}="$env{DM_DISABLE_OTHER_RULES_FLAG_OLD}",\ |
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+ ENV{DM_DISABLE_OTHER_RULES_FLAG_OLD}="",\ |
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+ ENV{DM_ACTIVATION}="1" |
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+ |
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+# DM_SUBSYSTEM_UDEV_FLAG0 is the "RELOAD" flag for multipath subsystem. |
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+# Drop the DM_ACTIVATION flag here as mpath reloads tables if any of its |
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+# paths are lost/recovered. For any stack above the mpath device, this is not |
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+# something that should be reacted upon since it would be useless extra work. |
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+# It's exactly mpath's job to provide *seamless* device access to any of the |
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+# paths that are available underneath. |
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+ENV{DM_SUBSYSTEM_UDEV_FLAG0}=="1", ENV{DM_ACTIVATION}="0" |
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+ |
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+LABEL="mpath_end" |
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Index: multipath-tools-130222/multipath/Makefile |
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=================================================================== |
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--- multipath-tools-130222.orig/multipath/Makefile |
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+++ multipath-tools-130222/multipath/Makefile |
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@@ -25,6 +25,7 @@ install: |
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$(INSTALL_PROGRAM) -m 755 mpathconf $(DESTDIR)$(bindir)/ |
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$(INSTALL_PROGRAM) -d $(DESTDIR)/usr/lib/udev/rules.d |
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$(INSTALL_PROGRAM) -m 644 multipath.rules $(DESTDIR)/usr/lib/udev/rules.d/62-multipath.rules |
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+ $(INSTALL_PROGRAM) -m 644 11-dm-mpath.rules $(DESTDIR)/usr/lib/udev/rules.d/11-dm-mpath.rules |
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$(INSTALL_PROGRAM) -d $(DESTDIR)$(mandir) |
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$(INSTALL_PROGRAM) -m 644 $(EXEC).8.gz $(DESTDIR)$(mandir) |
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$(INSTALL_PROGRAM) -d $(DESTDIR)$(man5dir) |
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@@ -33,6 +34,7 @@ install: |
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uninstall: |
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rm $(DESTDIR)/usr/lib/udev/rules.d/62-multipath.rules |
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+ rm $(DESTDIR)/usr/lib/udev/rules.d/11-dm-mpath.rules |
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rm $(DESTDIR)$(bindir)/$(EXEC) |
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rm $(DESTDIR)$(bindir)/mpathconf |
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rm $(DESTDIR)$(mandir)/$(EXEC).8.gz
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