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mmremotefs

Last change on this file was 16, checked in by rock, 17 years ago

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1	#!/bin/ksh
2	# IBM_PROLOG_BEGIN_TAG
3	# This is an automatically generated prolog.
4	#
5	#
6	#
7	# Licensed Materials - Property of IBM
8	#
9	# (C) COPYRIGHT International Business Machines Corp. 2004,2007
10	# All Rights Reserved
11	#
12	# US Government Users Restricted Rights - Use, duplication or
13	# disclosure restricted by GSA ADP Schedule Contract with IBM Corp.
14	#
15	# IBM_PROLOG_END_TAG
16	# @(#)46 1.55.1.2 src/avs/fs/mmfs/ts/admin/mmremotefs.sh, mmfs, avs_rgpfs24, rgpfs24s012a 5/2/07 15:29:30
17	###############################################################################
18	#
19	# Usage:
20	#
21	# mmremotefs add device -f remoteDevice -C remoteClusterName
22	# -T mountPoint [-o mountOptions] [-A yes\|no\|automount]
23	#
24	# mmremotefs update device [-f remoteDevice] [-C remoteClusterName]
25	# [-T mountPoint] [-o mountOptions] [-A yes\|no\|automount]
26	#
27	# mmremotefs delete {device \| all \| -C remoteClusterName}
28	#
29	# mmremotefs show [device \| all \| -C remoteClusterName]
30	#
31	# where
32	#
33	# device is the local name for the remote file system.
34	# This name must be unique within the local cluster.
35	# The actual name of the file system within its home cluster
36	# may or may not be the same. See the -f parameter.
37	#
38	# -f remoteDevice is the actual device name for the remote file system
39	# within the file system's home cluster.
40	#
41	# -C remoteClusterName is the fully-qualified name for the remote
42	# cluster that owns the file system.
43	#
44	# -T mountPoint is the mount point directory of the file system.
45	#
46	# -o mountOptions is a comma-separated list of mount options.
47	# The default set of options is: rw,nomtime,atime
48	#
49	# -A yes\|no\|automount controls the automount option. If yes is specified,
50	# the file system is mounted automatically when the GPFS
51	# daemon is started. If no is specified, the file system
52	# can be mounted only with an explicit mount command.
53	# If automount is specified, the mounting of the file
54	# system is controlled by the system automount daemon.
55	# The default setting is no.
56	#
57	###############################################################################
58
59	# Include global declarations and service routines.
60	. /usr/lpp/mmfs/bin/mmglobfuncs
61	. /usr/lpp/mmfs/bin/mmsdrfsdef
62	. /usr/lpp/mmfs/bin/mmfsfuncs
63
64	sourceFile="mmremotefs.sh"
65	[[ -n $DEBUG \|\| -n $DEBUGmmremotefs ]] && set -x
66	$mmTRACE_ENTER "$*"
67
68	# Local work files. Names should be of the form:
69	# fn=${tmpDir}fn.${mmcmd}.$$
70	mountCheckList=${tmpDir}mountCheckList.${mmcmd}.$$
71
72	LOCAL_FILES=" $mountCheckList "
73
74
75	# Local variables
76	usageMsg=385
77	contactNodesCount=0
78
79
80	# Local functions
81
82
83	###########################################################################
84	#
85	# Function: Process the specified mount options string.
86	# Provide default values for missing options.
87	#
88	# Input: $1 - A comma-separated list of mount options.
89	#
90	# Output: Colon-separated string containing the fields:
91	# rwOption:mtimeOption:atimeOption:quotaOptions:otherOptions:
92	#
93	# Returns: 0 - success
94	# 1 - error encountered
95	#
96	###########################################################################
97	function parseMountOptions # <optionsString>
98	{
99	typeset sourceFile="mmremotefs.sh"
100	[[ -n $DEBUG \|\| -n $DEBUGparseMountOptions ]] && set -x
101	$mmTRACE_ENTER "$*"
102	typeset optionsString=$1
103
104	typeset rc=0
105	typeset rwOption="rw"
106	typeset mtimeOption=""
107	typeset atimeOption=""
108	typeset quotaOptions=""
109	typeset otherOptions=""
110
111	# Clear the string if DELETE or DEFAULT is specified.
112	[[ $optionsString = DEFAULT \|\| $optionsString = DELETE ]] && \
113	optionsString=""
114
115	# Parse the options string looking for certain options.
116	# All other options are simply passed through.
117	IFS=","
118	for option in $optionsString
119	do
120	case $option in
121
122	rw \| ro \| rs )
123	[[ $option = rs ]] && option=ro
124	rwOption=$option
125	;;
126
127	atime* \| noatime )
128	if [[ $option = atime \|\| $option = "atime=1" \|\| $option = "atime=yes" ]]
129	then
130	atimeOption=atime
131	elif [[ $option = noatime \|\| $option = "atime=0" \|\| $option = "atime=no" ]]
132	then
133	atimeOption=noatime
134	else
135	print -u2 "$mmcmd: Invalid mount option specified: $option."
136	return 1
137	fi
138	;;
139
140	mtime* \| nomtime )
141	if [[ $option = mtime \|\| $option = "mtime=1" \|\| $option = "mtime=yes" ]]
142	then
143	mtimeOption=mtime
144	elif [[ $option = nomtime \|\| $option = "mtime=0" \|\| $option = "mtime=no" ]]
145	then
146	mtimeOption=nomtime
147	else
148	print -u2 "$mmcmd: Invalid mount option specified: $option."
149	return 1
150	fi
151	;;
152
153	syncnfs* \| nosyncnfs )
154	if [[ $option = syncnfs \|\| $option = "syncnfs=1" \|\| $option = "syncnfs=yes" ]]
155	then
156	otherOptions="${otherOptions},syncnfs"
157	elif [[ $option = nosyncnfs \|\| $option = "syncnfs=0" \|\| $option = "syncnfs=no" ]]
158	then
159	otherOptions="${otherOptions},nosyncnfs"
160	else
161	print -u2 "$mmcmd: Invalid mount option specified: $option."
162	return 1
163	fi
164	;;
165
166	quota )
167	: # Do nothing; quotas should be controlled with mmchfs -Q.
168	;;
169
170	rootSquash )
171	: # Do nothing; root squash is controlled with mmauth grant.
172	;;
173
174	* )
175	otherOptions="${otherOptions},$option"
176	;;
177
178	esac # end of case $option in
179	done # end of for option in $optionsString do
180	IFS="$IFS_sv"
181
182	otherOptions="${otherOptions##+(,)}" # Strip leading commas, if any.
183	otherOptions="${otherOptions%%+(,)}" # Strip trailing commas, if any.
184
185	# Put out the results and return.
186	print -- "$rwOption:$mtimeOption:$atimeOption:$quotaOptions:$otherOptions"
187
188	$mmTRACE_EXIT "rc=$rc"
189	return $rc
190
191	} #------ end of function parseMountOptions -----------------
192
193
194
195	#######################
196	# Mainline processing
197	#######################
198
199
200	#######################################
201	# Process the command line arguments.
202	#######################################
203	[[ $arg1 = '-?' \|\| $arg1 = '-h' \|\| $arg1 = '--help' \|\| $arg1 = '--' ]] && \
204	syntaxError "help" $usageMsg
205
206	action=$arg1
207
208	[[ -z $action ]] && \
209	syntaxError "missingArgs" $usageMsg
210
211	# Allow "ls" to be used in place of "show".
212	[[ $action = ls ]] && action=show
213
214	# Process the positional parameters.
215	case $action in
216	add )
217	[[ $argc -lt 5 ]] && syntaxError "missingArgs" $usageMsg
218	device=$arg2
219	;;
220
221	update )
222	[[ $argc -lt 3 ]] && syntaxError "missingArgs" $usageMsg
223	device=$arg2
224	;;
225
226	delete )
227	[[ $argc -lt 2 ]] && syntaxError "missingArgs" $usageMsg
228	if [[ $arg2 = "-C"* ]]
229	then
230	remoteClusterName=${arg2#-C}
231	if [[ -z $remoteClusterName ]]
232	then
233	remoteClusterName=$arg3
234	[[ -n $arg4 ]] && syntaxError "extraArg" $usageMsg $arg4
235	else
236	[[ -n $arg3 ]] && syntaxError "extraArg" $usageMsg $arg3
237	fi
238	[[ -z $remoteClusterName ]] && syntaxError "missingValue" $usageMsg "-C"
239	else
240	device=$arg2
241	[[ -n $arg3 ]] && syntaxError "extraArg" $usageMsg $arg3
242	fi
243	;;
244
245	show )
246	if [[ -z $arg2 ]]
247	then
248	device=all
249	elif [[ $arg2 = "-C"* ]]
250	then
251	remoteClusterName=${arg2#-C}
252	if [[ -z $remoteClusterName ]]
253	then
254	remoteClusterName=$arg3
255	[[ -n $arg4 ]] && syntaxError "extraArg" $usageMsg $arg4
256	else
257	[[ -n $arg3 ]] && syntaxError "extraArg" $usageMsg $arg3
258	fi
259	[[ -z $remoteClusterName ]] && syntaxError "missingValue" $usageMsg "-C"
260	else
261	device=$arg2
262	[[ -n $arg3 ]] && syntaxError "extraArg" $usageMsg $arg3
263	fi
264	;;
265
266	*) # Invalid action specified.
267	syntaxError "keyword" $usageMsg $action
268	;;
269	esac
270
271
272	# Verify the device name.
273	deviceName=${device##+(/)dev+(/)} # name stripped of /dev/ prefix
274	fqDeviceName="/dev/$deviceName" # fully-qualified name (with /dev/ prefix)
275	if [[ $deviceName = /* ]]
276	then
277	printErrorMsg 169 $mmcmd $device
278	cleanupAndExit
279	elif [[ $deviceName = / ]]
280	then
281	printErrorMsg 170 $mmcmd $device
282	cleanupAndExit
283	else
284	checkName deviceName 255 "$deviceName"
285	[[ $? -ne 0 ]] && cleanupAndExit
286	fi
287
288	# If action is "add" or "update", there are more options to process.
289	if [[ $action = add \|\| $action = update ]]
290	then
291	shift 2 # Move past the fs name in the parameter list.
292
293	# Process the individual arguments and the values associated with them.
294	while getopts :A:C:f:k:n:o:T: OPT
295	do
296	case $OPT in
297
298	A) [[ -n $Aflag ]] && syntaxError "multiple" $noUsageMsg "-$OPT"
299	Aflag="-$OPT"; Aarg=$OPTARG;
300	[[ $Aarg != yes && $Aarg != no && $Aarg != automount ]] && \
301	syntaxError "invalidOption" $usageMsg "-$OPT $OPTARG"
302	if [[ $Aarg = yes ]]
303	then
304	Aarg=mmfs
305	elif [[ $Aarg = no ]]
306	then
307	Aarg=false
308	else
309	: # It must be "automount".
310	fi
311	;;
312
313	C) [[ -n $Cflag ]] && syntaxError "multiple" $noUsageMsg "-$OPT"
314	Cflag="-$OPT"; Carg=$OPTARG;
315	;;
316
317	f) [[ -n $fflag ]] && syntaxError "multiple" $noUsageMsg "-$OPT"
318	fflag="-$OPT"; farg=$OPTARG;
319	;;
320
321	o) [[ -n $oflag ]] && syntaxError "multiple" $noUsageMsg "-$OPT"
322	oflag="-$OPT"; oarg=$OPTARG;
323	[[ -z $oarg ]] && oarg=DEFAULT
324	;;
325
326	T) [[ -n $Tflag ]] && syntaxError "multiple" $noUsageMsg "-$OPT"
327	Tflag="-$OPT"; Targ=$OPTARG;
328	checkName pathName 1023 "$Targ"
329	[[ $? -ne 0 ]] && cleanupAndExit
330	# Ensure the pathname starts with a slash.
331	[[ $Targ = ${Targ#/} ]] && \
332	syntaxError "absolutePath" $noUsageMsg $Targ
333	;;
334
335	+[ACfknoT) # Invalid option.
336	syntaxError "invalidOption" $usageMsg $OPT
337	;;
338
339	:) # Missing argument.
340	syntaxError "missingValue" $usageMsg $OPTARG
341	;;
342
343	*) # Invalid option.
344	syntaxError "invalidOption" $usageMsg $OPTARG
345	;;
346	esac
347	done
348
349	shift OPTIND-1
350	[[ $# != 0 ]] && syntaxError "extraArg" $usageMsg $1
351
352	# Verify input parameters and assign default values as needed.
353	if [[ $action = add ]]
354	then
355	[[ -z $Carg ]] && syntaxError "missingArgs" $usageMsg
356	[[ -z $Targ ]] && syntaxError "missingArgs" $usageMsg
357	[[ -z $farg ]] && syntaxError "missingArgs" $usageMsg
358	[[ -z $Aarg ]] && Aarg=false
359	if [[ $device = all ]]
360	then
361	# The device name cannot be "all".
362	printErrorMsg 196 $mmcmd
363	cleanupAndExit
364	fi
365	else # action = update
366	if [[ -z $Aarg && -z $Carg && -z $farg && -z $oarg && -z $Targ ]]
367	then
368	# No changes made.
369	printErrorMsg 323 $mmcmd
370	cleanupAndExit
371	fi
372	fi # end of if [[ $action = add ]]
373
374	# Initialize local variables.
375	remoteDevice=${farg##+(/)dev+(/)} # name stripped of /dev/ prefix
376	if [[ $remoteDevice = /* ]]
377	then
378	printErrorMsg 169 $mmcmd "$farg"
379	cleanupAndExit
380	elif [[ $remoteDevice = / ]]
381	then
382	printErrorMsg 170 $mmcmd "$farg"
383	cleanupAndExit
384	else
385	checkName deviceName 255 "$remoteDevice"
386	[[ $? -ne 0 ]] && cleanupAndExit
387	fi
388	remoteClusterName=$Carg
389	mountPoint=$Targ
390	automountValue=$Aarg
391	mountOptions=$oarg
392
393	# Determine the values for the /etc/filesystems stanza lines.
394	sgVFS_Line_Value="mmfs"
395	sgTYPE_Line_Value="mmfs"
396	sgNODENAME_Line_Value="-"
397	sgACCOUNT_Line_Value="false"
398	sgMOUNT_Line_Value=$automountValue
399
400	# Parse the mount options.
401	parseMountOptionsOutput=$(parseMountOptions $mountOptions)
402	IFS=":"
403	set -f ; set -- $parseMountOptionsOutput ; set +f
404	sgRW_OPT_Value=$1
405	sgMTIME_OPT_Value=$2
406	sgATIME_OPT_Value=$3
407	sgQUOTA_OPT_Value=$4
408	sgOTHER_OPT_Value=$5
409	IFS="$IFS_sv"
410
411	# The mount point cannot be the same as the device name.
412	if [[ $fqDeviceName = $mountPoint ]]
413	then
414	printErrorMsg 305 $mmcmd $mountPoint
415	cleanupAndExit
416	fi
417	fi # end of if [[ $action = add \|\| $action = update ]]
418
419
420	#####################################################################
421	# Set up trap exception handling and call the gpfsInit function.
422	# It will ensure that the local copy of the mmsdrfs and the rest of
423	# the GPFS system files are up-to-date and will obtain the sdr lock.
424	#####################################################################
425	if [[ $action = show ]]
426	then
427	trap pretrap2 HUP INT QUIT KILL
428	gpfsInitOutput=$(gpfsInit nolock)
429	rc=$?
430	else
431	trap pretrap HUP INT QUIT KILL
432	gpfsInitOutput=$(gpfsInit $lockId)
433	rc=$?
434	fi
435	setGlobalVar $rc $gpfsInitOutput
436
437	# Determine the lookup order for resolving host names.
438	[[ $osName != AIX ]] && resolveOrder=$(setHostResolveOrder)
439
440
441	#############################################################################
442	#
443	# Go through the mmsdrfs file.
444	#
445	# If action is "add", extract needed information to ensure that we can
446	# safely add the new remote file system.
447	#
448	# If action is "update", make the needed changes to the mmsdrfs file.
449	#
450	# If action is "delete", remove the appropriate lines from the mmsdrfs file.
451	#
452	# If action is "show", extract and display the relevant information.
453	#
454	#############################################################################
455	$rm -f $newsdrfs $nodefile $mountCheckList
456	deleteThisFileSystem=no
457	IFS=":"
458	exec 3<&-
459	exec 3< $mmsdrfsFile
460	while read -u3 sdrfsLine
461	do
462	# Parse the line.
463	set -f ; set -A v -- - $sdrfsLine ; set +f
464
465	IFS="$IFS_sv" # Restore the default IFS settings.
466	printLine=true # Assume the line will be printed.
467
468	# Change some of the fields depending on the type of line.
469	case ${v[$LINE_TYPE_Field]} in
470
471	$VERSION_LINE )
472	# Increment the generation number.
473	newGenNumber=${v[$SDRFS_GENNUM_Field]}+1
474	v[$SDRFS_GENNUM_Field]=$newGenNumber
475
476	ourClusterName=${v[$CLUSTER_NAME_Field]}
477	;;
478
479	$MEMBER_NODE )
480	# Add the reliable node name to nodefile.
481	print -- "${v[$REL_HOSTNAME_Field]}" >> $nodefile
482	checkForErrors "writing to file $nodefile" $?
483
484	# If this is the line for the node that is executing
485	# this command, set the preferredNode variable.
486	[[ ${v[$NODE_NUMBER_Field]} = $ourNodeNumber ]] && \
487	preferredNode=${v[$REL_HOSTNAME_Field]}
488	;;
489
490	$SG_HEADR )
491	# Processing depends on the specified action:
492	case $action in
493	add )
494	# Make sure that the file system that we want to create
495	# does not already exist.
496	if [[ ${v[$DEV_NAME_Field]} = $deviceName ]]
497	then
498	printErrorMsg 107 $mmcmd $device
499	cleanupAndExit
500	fi
501	if [[ ${v[$REMOTE_DEV_NAME_Field]} = $remoteDevice &&
502	${v[$NODESETID_Field]} = $remoteClusterName ]]
503	then
504	# The file system on the remote cluster is already defined.
505	printErrorMsg 317 $mmcmd $remoteDevice $remoteClusterName
506	cleanupAndExit
507	fi
508
509	# Make a list of the used minor numbers.
510	existingMinorNumbers="$existingMinorNumbers ${v[$DEV_MINOR_Field]}"
511	;;
512
513	update )
514	if [[ ${v[$DEV_NAME_Field]} = $deviceName ]]
515	then
516	# We are making changes to this remote file system.
517	fsFound=yes
518
519	# Generate the fully-qualified name for the file system.
520	fsFullName="${v[$NODESETID_Field]}:${v[$REMOTE_DEV_NAME_Field]}"
521
522	# Verify that this is indeed a remote file system.
523	if [[ ${v[$FS_TYPE_Field]} != $remotefs ]]
524	then
525	# The file system is not a remote file system known to GPFS.
526	printErrorMsg 252 $mmcmd $device
527	cleanupAndExit
528	fi
529
530	if [[ -n $remoteDevice ]]
531	then
532	# We are changing the actual name of the file system.
533	v[$REMOTE_DEV_NAME_Field]=$remoteDevice
534	fsMustNotBeMounted=yes
535	fi
536
537	if [[ -n $remoteClusterName ]]
538	then
539	# We are changing the home cluster name.
540	v[$NODESETID_Field]=$remoteClusterName
541	fsMustNotBeMounted=yes
542	fi
543	fi # end of if [[ ${v[$DEV_NAME_Field]} = $deviceName ]]
544	;;
545
546	delete )
547	if [[ (${v[$DEV_NAME_Field]} = $deviceName \|\| $device = all \|\|
548	${v[$NODESETID_Field]} = $remoteClusterName) &&
549	${v[$FS_TYPE_Field]} = $remotefs ]]
550	then
551	# This file system is going away.
552	deleteThisFileSystem=yes
553	fsFound=yes
554
555	# Generate the fully-qualified name for the file system.
556	# Put it, together with the local device name, on the list
557	# of file systems that should not be mounted.
558	fsFullName="${v[$NODESETID_Field]}:${v[$REMOTE_DEV_NAME_Field]}"
559	print -- "$fsFullName $deviceName" >> $mountCheckList
560	checkForErrors "writing to file $mountCheckList" $?
561
562	else
563	# This file system will remain in place.
564	deleteThisFileSystem=""
565	if [[ ${v[$DEV_NAME_Field]} = $deviceName ]]
566	then
567	# The file system is not a remote file system known to GPFS.
568	printErrorMsg 252 $mmcmd $device
569	cleanupAndExit
570	fi
571	fi # end of if [[ (${v[$DEV_NAME_Field]} = $deviceName ... ]]
572
573	[[ -n $deleteThisFileSystem ]] && \
574	printLine=false
575	;;
576
577	show )
578	if [[ (${v[$DEV_NAME_Field]} = $deviceName \|\| $device = all \|\|
579	${v[$NODESETID_Field]} = $remoteClusterName) &&
580	${v[$FS_TYPE_Field]} = $remotefs ]]
581	then
582	fsFound=yes
583	displayThisFileSystem=yes
584	if [[ -z $headerOut ]]
585	then
586	# Output the header line.
587	header=$(printInfoMsg 490)
588	printf "%s\n" "$header"
589	headerOut=yes
590	fi
591
592	# Start outputting the individual fields.
593	printf "%-11s %-12s %-22s" "${v[$DEV_NAME_Field]}" \
594	"${v[$REMOTE_DEV_NAME_Field]}" "${v[$NODESETID_Field]}"
595	else
596	displayThisFileSystem=""
597	if [[ ${v[$DEV_NAME_Field]} = $deviceName ]]
598	then
599	# The file system is not a remote file system known to GPFS.
600	printErrorMsg 252 $mmcmd $device
601	cleanupAndExit
602	fi
603	fi # end of if [[ (${v[$DEV_NAME_Field]} = $deviceName ...
604	;;
605
606	*) checkForErrors "unexpected action $action" 1
607	;;
608	esac # end case $action in
609	;;
610
611	$SG_ETCFS )
612	# Processing depends on the specified action:
613	case $action in
614	add )
615	# Make sure that the new mount point is not already used
616	# by some other file system in the nodeset.
617	if [[ ${v[$LINE_NUMBER_Field]} = $MOUNT_POINT_Line &&
618	${v[$ETCFS_TEXT_Field]} = $mountPoint ]]
619	then
620	printErrorMsg 107 $mmcmd $mountPoint
621	cleanupAndExit
622	fi
623
624	# See if any of the existing file systems requires
625	# the system automounter.
626	if [[ ${v[$LINE_NUMBER_Field]} = $MOUNT_Line &&
627	${v[$ETCFS_TEXT_Field]} = automount ]]
628	then
629	automountMounts=yes
630	fi
631	;;
632
633	update )
634	if [[ -n $mountPoint ]]
635	then
636	# We are changing the mount point.
637	if [[ ${v[$LINE_NUMBER_Field]} = $MOUNT_POINT_Line ]]
638	then
639	# This is a mount point line for some file system.
640	# If this is the mount point for our file system,
641	# set it to the new value. Otherwise, add it to
642	# the list of existing mount points.
643	if [[ ${v[$DEV_NAME_Field]} = $deviceName ]]
644	then
645	oldMountPoint=${v[$ETCFS_TEXT_Field]}
646	v[$ETCFS_TEXT_Field]=$mountPoint
647	fsMustNotBeMounted=yes
648	else
649	existingMountPoints="$existingMountPoints ${v[$ETCFS_TEXT_Field]}"
650	fi
651	fi
652	fi # end of if [[ -n $mountPoint ]]
653
654	if [[ -n $automountValue ]]
655	then
656	# We are changing the automount option.
657	if [[ ${v[$LINE_NUMBER_Field]} = $MOUNT_Line ]]
658	then
659	# This is a mount line for some file system, i.e.,
660	# the ' mount = ... ' line in etc/filesystems.
661
662	# See if any file system requires the system automounter.
663	[[ ${v[$ETCFS_TEXT_Field]} = automount ]] && \
664	automountMounts=yes
665
666	# If this is the mount line for our file system,
667	# set the new value for the mount option.
668	if [[ ${v[$DEV_NAME_Field]} = $deviceName ]]
669	then
670	# If switching to or from automount,
671	# the file system must be unmounted.
672	[[ $automountValue = automount \|\|
673	${v[$ETCFS_TEXT_Field]} = automount ]] && \
674	fsMustNotBeMounted=yes
675
676	# Set the new value for the mount option.
677	v[$ETCFS_TEXT_Field]="$MOUNT_Line_Prefix$automountValue"
678	fi # end of if [[ ${v[$DEV_NAME_Field]} = $deviceName ]]
679
680	fi # end of if [[ ${v[$LINE_NUMBER_Field]} = $MOUNT_Line ]]
681	fi # end of if [[ -n $automountValue ]]
682
683	if [[ -n $remoteClusterName && ${v[$DEV_NAME_Field]} = $deviceName ]]
684	then
685	# We are changing the home cluster name.
686	v[$NODESETID_Field]=$remoteClusterName
687	fi
688	;;
689
690	delete )
691	[[ -n $deleteThisFileSystem ]] && \
692	printLine=false
693	;;
694
695	show )
696	if [[ -n $displayThisFileSystem ]]
697	then
698	# Output the mount point.
699	[[ ${v[$LINE_NUMBER_Field]} = $MOUNT_POINT_Line ]] && \
700	printf " %-20s" "${v[$ETCFS_TEXT_Field]}"
701
702	# Determine the automount value. It will be displayed last.
703	if [[ ${v[$LINE_NUMBER_Field]} = $MOUNT_Line ]]
704	then
705	automountSetting=${v[$ETCFS_TEXT_Field]#$MOUNT_Line_Prefix}
706	if [[ $automountSetting = mmfs ]]
707	then
708	automountSetting=yes
709	elif [[ $automountSetting = false ]]
710	then
711	automountSetting=no
712	else
713	: # Leave the value as is.
714	fi
715	fi # end of if [[ ${v[$LINE_NUMBER_Field]} = $MOUNT_Line ]]
716	fi # end of if [[ -n $displayThisFileSystem ]]
717	;;
718
719	*) checkForErrors "unexpected action $action" 1
720	;;
721
722	esac # end case $action in
723	;;
724
725	$SG_MOUNT )
726	# Processing depends on the specified action:
727	case $action in
728	add )
729	: # There is nothing to do.
730	;;
731
732	update )
733	if [[ -n $mountOptions && ${v[$DEV_NAME_Field]} = $deviceName ]]
734	then
735	# We are changing the mount options for this remote file system.
736	v[$RW_OPT_Field]=$sgRW_OPT_Value
737	v[$MTIME_OPT_Field]=$sgMTIME_OPT_Value
738	v[$ATIME_OPT_Field]=$sgATIME_OPT_Value
739	v[$QUOTA_OPT_Field]=$sgQUOTA_OPT_Value
740	v[$OTHER_OPT_Field]=$sgOTHER_OPT_Value
741	fi
742
743	if [[ -n $remoteClusterName && ${v[$DEV_NAME_Field]} = $deviceName ]]
744	then
745	# We are changing the home cluster name.
746	v[$NODESETID_Field]=$remoteClusterName
747	fi
748	;;
749
750	delete )
751	[[ -n $deleteThisFileSystem ]] && \
752	printLine=false
753	;;
754
755	show )
756	if [[ -n $displayThisFileSystem ]]
757	then
758	# Generate the mount options string.
759	optionsString="${v[$RW_OPT_Field]}"
760	[[ -n ${v[$MTIME_OPT_Field]} ]] && \
761	optionsString="${optionsString},${v[$MTIME_OPT_Field]}"
762	[[ -n ${v[$ATIME_OPT_Field]} ]] && \
763	optionsString="${optionsString},${v[$ATIME_OPT_Field]}"
764	[[ -n ${v[$OTHER_OPT_Field]} ]] && \
765	optionsString="${optionsString},${v[$OTHER_OPT_Field]}"
766	[[ -n ${v[$QUOTA_OPT_Field]} ]] && \
767	optionsString="${optionsString},quota=${v[$QUOTA_OPT_Field]}"
768
769	# Put out the last two values and finish the line.
770	printf " %-16s %s\n" "$optionsString" "$automountSetting"
771	fi # end of if [[ -n $displayThisFileSystem ]]
772	;;
773
774	*) checkForErrors "unexpected action $action" 1
775	;;
776
777	esac # end case $action in
778	;;
779
780	$REM_CLUSTER )
781	[[ ${v[$NODESETID_Field]} = $remoteClusterName ]] && \
782	remoteClusterFound=yes
783	;;
784
785	* ) # Pass all other lines without a change.
786	;;
787
788	esac # end of Change some of the fields
789
790	# Build and write the line to the new mmsdrfs file.
791	if [[ $printLine = true ]]
792	then
793	print_newLine >> $newsdrfs
794	checkForErrors "writing to file $newsdrfs" $?
795	fi
796
797	IFS=":" # Change the separator back to ":" for the next iteration.
798
799	done # end while read -u3 mmsdrfsFile
800
801	IFS="$IFS_sv" # Restore the default IFS settings.
802
803
804	if [[ -z $fsFound && $action != add ]]
805	then
806	if [[ (-z $device \|\| $device = all) && ($action = show \|\| $action = delete) ]]
807	then
808	# There are no remote file systems.
809	printErrorMsg 193 $mmcmd
810	else
811	# Remote file system not found.
812	printErrorMsg 194 $mmcmd $device
813	fi
814	cleanupAndExit
815	fi # end of if [[ -z $clusterFound ]]
816
817
818	#########################################
819	# Additional action-specific processing.
820	#########################################
821
822	###############################
823	# If action is "show", return.
824	###############################
825	if [[ $action = show ]]
826	then
827	# Return; we are done.
828	cleanupAndExit $rc
829	fi # end of if [[ $action = show ]]
830
831
832	#######################################################
833	# If action is "update", perform final error checking.
834	#######################################################
835	if [[ $action = update ]]
836	then
837	# If the mount point for a file system is being changed,
838	# ensure that the new mount point is not already in use.
839	if [[ -n $mountPoint ]]
840	then
841	for mpnt in $existingMountPoints
842	do
843	if [[ $mpnt = $mountPoint ]]
844	then
845	# There is already an existing filesystem using this mountpoint.
846	printErrorMsg 107 $mmcmd $mountPoint
847	cleanupAndExit
848	fi
849	done
850	fi # end of if [[ -n $mountPoint ]]
851
852	# If the home cluster for a file system is being changed,
853	# ensure that the new cluster is already defined.
854	if [[ -n $remoteClusterName && -z $remoteClusterFound ]]
855	then
856	# The remote cluster is not defined.
857	printErrorMsg 263 $mmcmd $remoteClusterName
858	cleanupAndExit
859	fi
860
861	# If appropriate, put the file system on the list
862	# of file systems that should not be mounted.
863	if [[ -n $fsMustNotBeMounted ]]
864	then
865	print -- "$fsFullName $deviceName" >> $mountCheckList
866	checkForErrors "writing to file $mountCheckList" $?
867	fi
868	fi # end of if [[ $action = update ]]
869
870
871	#############################################################################
872	# If action is "add", generate the needed information for the mmsdrfs file.
873	#############################################################################
874	if [[ $action = add ]]
875	then
876	# Ensure the remote cluster that we need is already defined.
877	if [[ -z $remoteClusterFound ]]
878	then
879	# The remote cluster was not found.
880	printErrorMsg 188 $mmcmd $remoteClusterName
881	cleanupAndExit
882	fi # end of if [[ -z $remoteClusterFound ]]
883
884	# Determine what the major number should be.
885	if [[ $osName = Linux ]]
886	then
887	checkVfsNumber
888	devMajor=$currentMajorNumber
889	fi
890	[[ -z $devMajor ]] && devMajor=$defaultMajorNumber
891
892	# Assign a minor number to the file system.
893	# Keep trying until we get a minor number that is not used by anybody.
894	rc=0
895	minor=""
896	while [[ -z $minor && $rc -eq 0 ]]
897	do
898	# Assign a minor number to the file system.
899	devMinor=$(assignDevMinor "$existingMinorNumbers")
900	rc=$?
901	if [[ $rc -eq 0 ]]
902	then
903	# Check whether the new device number is being used by somebody.
904	inuse=$($ls -lL /dev 2>/dev/null \| $grep "^${fsDeviceType}.* $devMajor, *$devMinor ")
905	if [[ -z $inuse ]]
906	then
907	# The number seems to be free.
908	minor=$devMinor
909	fi
910
911	# Add the number to the list of existing minor numbers.
912	existingMinorNumbers="$existingMinorNumbers $devMinor"
913
914	fi # end of if [[ $rc -eq 0 ]]
915	done # end of while [[ -z $minor && $rc -eq 0 ]]
916
917	if [[ -z $minor ]]
918	then
919	print -u2 "$mmcmd: Cannot assign a minor number for the file system."
920	cleanupAndExit
921	fi
922
923	# Build the SG-related lines for the new file system.
924	# Note: In order to preserve the tab characters in the /etc/filesystems lines,
925	# we temporarily reset the value of the IFS variable to exclude the tab.
926	IFS=' '
927
928	newLine="$remoteClusterName:$SG_HEADR:$deviceName::$minor::$remotefs:$remoteDevice"
929	print -- "$newLine" >> $newsdrfs
930
931	newLine="$remoteClusterName:$SG_ETCFS:$deviceName:$MOUNT_POINT_Line:$mountPoint:"
932	print -- "$newLine" >> $newsdrfs
933
934	newLine="$remoteClusterName:$SG_ETCFS:$deviceName:$DEV_Line"
935	newLine="$newLine:$DEV_Line_Prefix$fqDeviceName"
936	print -- "$newLine" >> $newsdrfs
937
938	newLine="$remoteClusterName:$SG_ETCFS:$deviceName:$VFS_Line"
939	newLine="$newLine:$VFS_Line_Prefix$sgVFS_Line_Value"
940	print -- "$newLine" >> $newsdrfs
941
942	newLine="$remoteClusterName:$SG_ETCFS:$deviceName:$NODENAME_Line"
943	newLine="$newLine:$NODENAME_Line_Prefix$sgNODENAME_Line_Value"
944	print -- "$newLine" >> $newsdrfs
945
946	newLine="$remoteClusterName:$SG_ETCFS:$deviceName:$MOUNT_Line"
947	newLine="$newLine:$MOUNT_Line_Prefix$sgMOUNT_Line_Value"
948	print -- "$newLine" >> $newsdrfs
949
950	newLine="$remoteClusterName:$SG_ETCFS:$deviceName:$TYPE_Line"
951	newLine="$newLine:$TYPE_Line_Prefix$sgTYPE_Line_Value"
952	print -- "$newLine" >> $newsdrfs
953
954	newLine="$remoteClusterName:$SG_ETCFS:$deviceName:$ACCOUNT_Line"
955	newLine="$newLine:$ACCOUNT_Line_Prefix$sgACCOUNT_Line_Value"
956	print -- "$newLine" >> $newsdrfs
957
958	newLine="$remoteClusterName:$SG_MOUNT:$deviceName::$sgRW_OPT_Value"
959	newLine="$newLine:$sgMTIME_OPT_Value:$sgATIME_OPT_Value"
960	newLine="$newLine:$sgQUOTA_OPT_Value:$sgOTHER_OPT_Value:"
961	print -- "$newLine" >> $newsdrfs
962	checkForErrors "writing to file $newsdrfs" $?
963
964	IFS="$IFS_sv"
965
966	fi # end of if [[ $action = add ]]
967
968
969	#########################################################
970	# If this is the first automountable GPFS file system,
971	# run the automount command on the nodes in the cluster.
972	#########################################################
973	if [[ $automountValue = "automount" && -z $automountMounts ]]
974	then
975	# Determine the value of the automountDir parameter.
976	automountDir=$(showCfgValue automountDir)
977	[[ -z $automountDir ]] && automountDir=$defaultAutomountDir
978
979	# Run the automount command on the nodes on which GPFS is active.
980	# On nodes that do not have GPFS running right now, this will be
981	# done by the mmchecksubsys processing when the daemon is started.
982	$mmcommon onactive $preferredNode $nodefile \
983	$NO_FILE_COPY $NO_MOUNT_CHECK NULL $NO_LINK \
984	tsdsh $mmremote startAutomounter $automountDir >$tmpfile 2>&1
985	rc=$?
986
987	# Ignore errors but show messages from the nodes, if any.
988	if [[ $rc -ne 0 && $rc -ne $MM_DaemonDown && -s $tmpfile ]]
989	then
990	$awk ' \
991	# Skip the lines with rc values. \
992	$2 == "rc" { next } \
993	# Print everything else. \
994	{ print $0 } \
995	' $tmpfile
996	fi # end of if [[ -s $tmpfile ]]
997	fi # end of if [[ $automountValue = "automount" && -z $automountMounts ]]
998
999
1000	############################################
1001	# Sort the new version of the mmsdrfs file.
1002	############################################
1003	LC_ALL=C $SORT_MMSDRFS $newsdrfs -o $newsdrfs
1004	checkForErrors "sorting $newsdrfs" $?
1005
1006
1007	###################################################
1008	# Lock the gpfs object to prevent any GPFS daemons
1009	# from starting during the commit phase.
1010	###################################################
1011	[[ $getCredCalled = no ]] && getCred
1012	setRunningCommand "$mmcmd" $primaryServer
1013	checkForErrors setRunningCommand $?
1014	gpfsLocked=yes
1015
1016
1017	################################################################
1018	# Make sure that file systems that should not be mounted
1019	# are indeed not mounted. Note that the scope of the mount
1020	# restriction is our own cluster only. It is OK for the file
1021	# systems to be mounted elsewhere.
1022	################################################################
1023	if [[ -s $mountCheckList ]]
1024	then
1025	exec 3<&-
1026	exec 3< $mountCheckList
1027	while read -u3 mountCheckLine
1028	do
1029	# Parse the line.
1030	set -f ; set -- $mountCheckLine ; set +f
1031	fsFullName=$1
1032	localDevName=$2
1033
1034	$mmcommon onactive $preferredNode $nodefile $NO_FILE_COPY \
1035	$fsFullName $ourClusterName $NO_LINK $MOUNT_CHECK_ONLY ldev=$localDevName 2>$errMsg
1036	rc=$?
1037	if [[ $rc -eq $MM_FsMounted ]]
1038	then
1039	# The file system is still mounted (messages were issued by mmcommon).
1040	$rm -f $errMsg
1041	cleanupAndExit
1042	elif [[ $rc -eq $MM_FsNotFound \|\| $rc -eq $MM_Remotefs ]]
1043	then
1044	# The file system was not found, so it cannot be mounted.
1045	rc=0
1046	elif [[ $rc -eq $MM_HostDown \|\|
1047	$rc -eq $MM_TimedOut \|\|
1048	$rc -eq $MM_UnknownCluster \|\|
1049	$rc -eq $MM_SecurityCfg \|\|
1050	$rc -eq $MM_AuthorizationFailed ]]
1051	then
1052	# We failed to connect to the remote cluster.
1053	rc=0
1054	if [[ $device != all ]]
1055	then
1056	# There is only one remote cluster, and we could not connect to it.
1057	# Exit the loop since none of its file systems can be mounted.
1058	break
1059	fi
1060	elif [[ $rc -eq $MM_DaemonDown ]]
1061	then
1062	# GPFS is down on all nodes in the local cluster.
1063	# There are no mounted file systems, so exit the loop.
1064	rc=0
1065	break
1066	elif [[ $rc -eq $MM_ConnectionReset ]]
1067	then
1068	# An internode connection was reset.
1069	printErrorMsg 257 $mmcmd
1070	elif [[ $rc -ne 0 ]]
1071	then
1072	if [[ -s $errMsg ]]
1073	then
1074	# Show the error messages from the daemon.
1075	$cat $errMsg 1>&2
1076	else
1077	# The mount check failed and there were no messages from the daemon.
1078	printErrorMsg 171 $mmcmd "mount check for $fsFullName" $rc
1079	fi
1080	# The command was unable to determine whether the file system is mounted.
1081	printErrorMsg 564 $mmcmd $localDevName
1082	cleanupAndExit
1083	fi # end of if [[ $rc -eq $MM_FsMounted ]]
1084	$rm -f $errMsg
1085	done # end of while read -u3 mountCheckLine
1086	$rm -f $errMsg
1087	fi # end of if [[ -s $mountCheckList ]]
1088
1089
1090	############################################################
1091	# Replace the mmsdrfs file in the sdr with the new version.
1092	############################################################
1093	trap "" HUP INT QUIT KILL
1094	gpfsObjectInfo=$(commitChanges \
1095	$nsId $nsId $gpfsObjectInfo $newGenNumber $newsdrfs $primaryServer)
1096	rc=$?
1097	if [[ $rc -ne 0 ]]
1098	then
1099	# The commit step failed; we cannot replace the file in the sdr.
1100	printErrorMsg 381 $mmcmd
1101	cleanupAndExit
1102	fi
1103
1104
1105	#############################################################
1106	# Unlock the sdr.
1107	#############################################################
1108	freeLockOnServer $primaryServer $ourNodeNumber >/dev/null
1109	sdrLocked=no
1110	trap posttrap HUP INT QUIT KILL
1111
1112
1113	#########################################################################
1114	# Make the new file system visible to the nodes. This includes adding
1115	# a stanza to /etc/filesystems and creating the mount point directory.
1116	# If the mount point changed, remove the old mount point.
1117	# This process is asynchronous.
1118	#########################################################################
1119	[[ -n $oldMountPoint && $mountPoint != $oldMountPoint ]] && \
1120	propagateOptions="rmdir$oldMountPoint"
1121
1122	propagateSdrfsFile async $nodefile $newsdrfs $newGenNumber $propagateOptions
1123
1124	cleanupAndExit 0
1125

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source: gpfs_3.1_ker2.6.20/lpp/mmfs/bin/mmremotefs

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