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Multipath device manageability improvements
Update udev helper scripts to deal with device-mapper devices created by multipathd. These enhancements are targeted at a particular storage network topology under evaluation at LLNL consisting of two SAS switches providing redundant connectivity between multiple server nodes and disk enclosures. The key to making these systems manageable is to create shortnames for each disk that conveys its physical location in a drawer. In a direct-attached topology we infer a disk's enclosure from the PCI bus number and HBA port number in the by-path name provided by udev. In a switched topology, however, multiple drawers are accessed via a single HBA port. We therefore resort to assigning drawer identifiers based on which switch port a drive's enclosure is connected to. This information is available from sysfs. Add options to zpool_layout to generate an /etc/zfs/zdev.conf using symbolic links in /dev/disk/by-id of the form <label>-<UUID>-switch-port:<X>-slot:<Y>. <label> is a string that depends on the subsystem that created the link and defaults to "dm-uuid-mpath" (this prefix is used by multipathd). <UUID> is a unique identifier for the disk typically obtained from the scsi_id program, and <X> and <Y> denote the switch port and disk slot numbers, respectively. Add a callout script sas_switch_id for use by multipathd to help create symlinks of the form described above. Update zpool_id and the udev zpool rules file to handle both multipath devices and conventional drives.
This commit is contained in:
Ned A. Bass
committed by
Brian Behlendorf
Brian Behlendorf
parent
7e7baecaa3
commit
560bcf9d14
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dist_bin_SCRIPTS = sas_switch_id
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uninstall-dist_binSCRIPTS:
|
||||
@$(NORMAL_UNINSTALL)
|
||||
@list='$(dist_bin_SCRIPTS)'; test -n "$(bindir)" || exit 0; \
|
||||
files=`for p in $$list; do echo "$$p"; done | \
|
||||
sed -e 's,.*/,,;$(transform)'`; \
|
||||
test -n "$$list" || exit 0; \
|
||||
echo " ( cd '$(DESTDIR)$(bindir)' && rm -f" $$files ")"; \
|
||||
cd "$(DESTDIR)$(bindir)" && rm -f $$files
|
||||
|
||||
mostlyclean-libtool:
|
||||
-rm -f *.lo
|
||||
|
||||
clean-libtool:
|
||||
-rm -rf .libs _libs
|
||||
tags: TAGS
|
||||
TAGS:
|
||||
|
||||
ctags: CTAGS
|
||||
CTAGS:
|
||||
|
||||
|
||||
distdir: $(DISTFILES)
|
||||
@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
|
||||
topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
|
||||
list='$(DISTFILES)'; \
|
||||
dist_files=`for file in $$list; do echo $$file; done | \
|
||||
sed -e "s|^$$srcdirstrip/||;t" \
|
||||
-e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
|
||||
case $$dist_files in \
|
||||
*/*) $(MKDIR_P) `echo "$$dist_files" | \
|
||||
sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
|
||||
sort -u` ;; \
|
||||
esac; \
|
||||
for file in $$dist_files; do \
|
||||
if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
|
||||
if test -d $$d/$$file; then \
|
||||
dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
|
||||
if test -d "$(distdir)/$$file"; then \
|
||||
find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
|
||||
fi; \
|
||||
if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
|
||||
cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
|
||||
find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
|
||||
fi; \
|
||||
cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
|
||||
else \
|
||||
test -f "$(distdir)/$$file" \
|
||||
|| cp -p $$d/$$file "$(distdir)/$$file" \
|
||||
|| exit 1; \
|
||||
fi; \
|
||||
done
|
||||
check-am: all-am
|
||||
check: check-am
|
||||
all-am: Makefile $(SCRIPTS)
|
||||
installdirs:
|
||||
for dir in "$(DESTDIR)$(bindir)"; do \
|
||||
test -z "$$dir" || $(MKDIR_P) "$$dir"; \
|
||||
done
|
||||
install: install-am
|
||||
install-exec: install-exec-am
|
||||
install-data: install-data-am
|
||||
uninstall: uninstall-am
|
||||
|
||||
install-am: all-am
|
||||
@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
|
||||
|
||||
installcheck: installcheck-am
|
||||
install-strip:
|
||||
$(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
|
||||
install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
|
||||
`test -z '$(STRIP)' || \
|
||||
echo "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'"` install
|
||||
mostlyclean-generic:
|
||||
|
||||
clean-generic:
|
||||
|
||||
distclean-generic:
|
||||
-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
|
||||
-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
|
||||
|
||||
maintainer-clean-generic:
|
||||
@echo "This command is intended for maintainers to use"
|
||||
@echo "it deletes files that may require special tools to rebuild."
|
||||
clean: clean-am
|
||||
|
||||
clean-am: clean-generic clean-libtool mostlyclean-am
|
||||
|
||||
distclean: distclean-am
|
||||
-rm -f Makefile
|
||||
distclean-am: clean-am distclean-generic
|
||||
|
||||
dvi: dvi-am
|
||||
|
||||
dvi-am:
|
||||
|
||||
html: html-am
|
||||
|
||||
html-am:
|
||||
|
||||
info: info-am
|
||||
|
||||
info-am:
|
||||
|
||||
install-data-am:
|
||||
|
||||
install-dvi: install-dvi-am
|
||||
|
||||
install-dvi-am:
|
||||
|
||||
install-exec-am: install-dist_binSCRIPTS
|
||||
|
||||
install-html: install-html-am
|
||||
|
||||
install-html-am:
|
||||
|
||||
install-info: install-info-am
|
||||
|
||||
install-info-am:
|
||||
|
||||
install-man:
|
||||
|
||||
install-pdf: install-pdf-am
|
||||
|
||||
install-pdf-am:
|
||||
|
||||
install-ps: install-ps-am
|
||||
|
||||
install-ps-am:
|
||||
|
||||
installcheck-am:
|
||||
|
||||
maintainer-clean: maintainer-clean-am
|
||||
-rm -f Makefile
|
||||
maintainer-clean-am: distclean-am maintainer-clean-generic
|
||||
|
||||
mostlyclean: mostlyclean-am
|
||||
|
||||
mostlyclean-am: mostlyclean-generic mostlyclean-libtool
|
||||
|
||||
pdf: pdf-am
|
||||
|
||||
pdf-am:
|
||||
|
||||
ps: ps-am
|
||||
|
||||
ps-am:
|
||||
|
||||
uninstall-am: uninstall-dist_binSCRIPTS
|
||||
|
||||
.MAKE: install-am install-strip
|
||||
|
||||
.PHONY: all all-am check check-am clean clean-generic clean-libtool \
|
||||
distclean distclean-generic distclean-libtool distdir dvi \
|
||||
dvi-am html html-am info info-am install install-am \
|
||||
install-data install-data-am install-dist_binSCRIPTS \
|
||||
install-dvi install-dvi-am install-exec install-exec-am \
|
||||
install-html install-html-am install-info install-info-am \
|
||||
install-man install-pdf install-pdf-am install-ps \
|
||||
install-ps-am install-strip installcheck installcheck-am \
|
||||
installdirs maintainer-clean maintainer-clean-generic \
|
||||
mostlyclean mostlyclean-generic mostlyclean-libtool pdf pdf-am \
|
||||
ps ps-am uninstall uninstall-am uninstall-dist_binSCRIPTS
|
||||
|
||||
|
||||
# Tell versions [3.59,3.63) of GNU make to not export all variables.
|
||||
# Otherwise a system limit (for SysV at least) may be exceeded.
|
||||
.NOEXPORT:
|
||||
Executable
+96
@@ -0,0 +1,96 @@
|
||||
#!/bin/sh
|
||||
#
|
||||
# sas_switch_id
|
||||
#
|
||||
# Callout script for multipathd to obtain disk UUIDs. Combine the UUID
|
||||
# from the scsi_id program with the SAS switch port number and enclosure
|
||||
# bay number, if available. This naming convention enables easier
|
||||
# identification of the physical drive location when multiple disk
|
||||
# enclosures are accessed via a SAS switch. For other storage
|
||||
# topologies just return the undecorated UUID of the drive.
|
||||
|
||||
PHYS_PER_PORT=4
|
||||
DEV=
|
||||
|
||||
usage() {
|
||||
cat << EOF
|
||||
Usage: sas_switch_id [-d disk] [-p phys_per_port]
|
||||
-d Basename of the disk device [default=none]
|
||||
-p Number of PHYs per switch port [default=${PHYS_PER_PORT}]
|
||||
-h Show this message
|
||||
EOF
|
||||
exit 0
|
||||
}
|
||||
|
||||
while getopts 'd:p:h' OPTION; do
|
||||
case ${OPTION} in
|
||||
d)
|
||||
DEV=${OPTARG}
|
||||
;;
|
||||
p)
|
||||
PHYS_PER_PORT=${OPTARG}
|
||||
;;
|
||||
h)
|
||||
usage
|
||||
;;
|
||||
esac
|
||||
done
|
||||
|
||||
if [ -z "$DEV" ] ; then
|
||||
echo "Error: missing required option -d"
|
||||
exit 1
|
||||
fi
|
||||
|
||||
UUID=`/lib/udev/scsi_id --whitelisted --device=/dev/$DEV`
|
||||
if [ $? != 0 -o -z "$UUID" ] ; then
|
||||
exit 1
|
||||
fi
|
||||
sys_path=`udevadm info -q path -p /sys/block/$DEV`
|
||||
dirs=(`echo "$sys_path" | tr / ' '`)
|
||||
switch_port_dir="/sys"
|
||||
|
||||
# Get path up to /sys/.../hostX
|
||||
for (( i=0; i<${#dirs[*]}; i++ )); do
|
||||
d=${dirs[$i]}
|
||||
switch_port_dir=$switch_port_dir/$d
|
||||
echo $d | egrep -q -e '^host[0-9]+$' && break
|
||||
done
|
||||
|
||||
if [ $i = ${#dirs[*]} ] ; then
|
||||
echo $UUID
|
||||
exit 0
|
||||
fi
|
||||
|
||||
# The directory three levels beneath /sys/.../hostX contains
|
||||
# symlinks to phy devices that reveal the switch port number.
|
||||
# Lowest phy number is $PHYS_PER_PORT*switch_port_number.
|
||||
for (( j=(($i+1)) ; j<(($i+4)); j++ )); do
|
||||
switch_port_dir=$switch_port_dir/${dirs[$j]}
|
||||
done
|
||||
pushd $switch_port_dir > /dev/null
|
||||
PHY=`ls -d phy* 2>/dev/null | head -1 | awk -F: '{print $NF}'`
|
||||
PORT=$(( $PHY / $PHYS_PER_PORT ))
|
||||
popd > /dev/null
|
||||
if [ -z "$PHY" ] ; then
|
||||
echo $UUID
|
||||
exit 0
|
||||
fi
|
||||
|
||||
# Look in /sys/.../sas_device/end_device-X for the bay_identifier
|
||||
# attribute.
|
||||
end_device_dir=$switch_port_dir
|
||||
for (( k=$j ; k<${#dirs[*]} ; k++ )); do
|
||||
d=${dirs[$k]}
|
||||
end_device_dir=$end_device_dir/$d
|
||||
if echo $d | egrep -q -e '^end_device' ; then
|
||||
end_device_dir=$end_device_dir/sas_device/$d
|
||||
break
|
||||
fi
|
||||
done
|
||||
SLOT=`cat $end_device_dir/bay_identifier 2>/dev/null`
|
||||
if [ -z "$SLOT" ] ; then
|
||||
echo $UUID
|
||||
exit 0
|
||||
fi
|
||||
|
||||
echo "$UUID-switch-port:$PORT-slot:$SLOT"
|
||||
Reference in New Issue
Block a user