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14 <entry align="left"><para>Lustre 2.0 Operations Manual</para></entry>
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45 <informaltable frame="none">
47 <colspec colname="c1" colwidth="100*"/>
51 <entry align="right"><para>Index</para></entry>
57 <title>A<anchor xml:id="dbdoclet.50438146_Symbols" xreflabel=""/><anchor xml:id="dbdoclet.50438146_Numerics" xreflabel=""/><anchor xml:id="dbdoclet.50438146_A" xreflabel=""/></title>
59 <para>access control list (ACL), <link xl:href="ManagingSecurity.html#50438221_marker-1292306">1</link></para>
61 <para>ACL, using, <link xl:href="ManagingSecurity.html#50438221_marker-1292306">1</link></para>
64 <para>examples, <link xl:href="ManagingSecurity.html#50438221_marker-1292325">1</link></para>
66 <para>Lustre support, <link xl:href="ManagingSecurity.html#50438221_marker-1292314">1</link></para>
67 <para>adaptive timeouts</para>
69 <para>configuring, <link xl:href="LustreProc.html#50438271_marker-1293381">1</link></para>
71 <para>interpreting, <link xl:href="LustreProc.html#50438271_marker-1293383">1</link></para>
73 <para>introduction, <link xl:href="LustreProc.html#50438271_marker-1293380">1</link></para>
76 <para>clients, <link xl:href="ConfiguringLustre.html#50438267_marker-1292440">1</link></para>
78 <para>OSTs, <link xl:href="ConfiguringLustre.html#50438267_marker-1292440">1</link></para>
80 <para>allocating quotas, <link xl:href="ConfiguringQuotas.html#50438217_marker-1290226">1</link></para>
82 <title>B<anchor xml:id="dbdoclet.50438146_B" xreflabel=""/></title>
84 <para>bonding, <link xl:href="SettingUpBonding.html#50438258_marker-1301678">1</link></para>
86 <para>configuring Lustre, <link xl:href="SettingUpBonding.html#50438258_marker-1301911">1</link></para>
88 <para>module parameters, <link xl:href="SettingUpBonding.html#50438258_marker-1301747">1</link></para>
90 <para>references, <link xl:href="SettingUpBonding.html#50438258_marker-1301915">1</link></para>
92 <para>requirements, <link xl:href="SettingUpBonding.html#50438258_marker-1301684">1</link></para>
94 <para>setting up, <link xl:href="SettingUpBonding.html#50438258_marker-1301757">1</link></para>
97 <title>C<anchor xml:id="dbdoclet.50438146_C" xreflabel=""/></title>
98 <para>calculating</para>
100 <para>OSS memory requirements, <link xl:href="SettingUpLustreSystem.html#50438256_marker-1292245">1</link></para>
102 <para>changelogs, <link xl:href="LustreMonitoring.html#50438273_marker-1297383">1</link></para>
104 <para>checksums, <link xl:href="ManagingFileSystemIO.html#50438211_marker-1291974">1</link></para>
107 <para>eviction, <link xl:href="LustreRecovery.html#50438268_marker-1292164">1</link></para>
108 <para>client read/write</para>
110 <para>extents survey, <link xl:href="LustreProc.html#50438271_marker-1290612">1</link></para>
112 <para>offset survey, <link xl:href="LustreProc.html#50438271_marker-1290564">1</link></para>
115 <para>adding, <link xl:href="ConfiguringLustre.html#50438267_marker-1292440">1</link></para>
117 <para>CollectL, <link xl:href="LustreMonitoring.html#50438273_marker-1297391">1</link></para>
120 <para>filefrag, <link xl:href="UserUtilities_HTML.html#50438206_marker-1305920">1</link>, <link xl:href="LustreProgrammingInterfaces.html#50438291_marker-1294565">2</link></para>
122 <para>lfs, <link xl:href="UserUtilities_HTML.html#50438206_marker-1305209">1</link></para>
124 <para>lfsck, <link xl:href="UserUtilities_HTML.html#50438206_marker-1305843">1</link></para>
126 <para>mount, <link xl:href="UserUtilities_HTML.html#50438206_marker-1305992">1</link></para>
128 <para>Commit on Share (COS), <link xl:href="LustreRecovery.html#50438268_marker-1292182">1</link></para>
130 <para>components, Lustre, <link xl:href="UnderstandingLustre.html#50438250_marker-1293887">1</link></para>
132 <para>configuration example, Lustre, <link xl:href="ConfiguringLustre.html#50438267_marker-1290955">1</link></para>
134 <para>configuration, logs, regenerating, <link xl:href="LustreMaintenance.html#50438199_marker-1305736">1</link></para>
135 <para>configuration, more complex</para>
137 <para>failover, <link xl:href="LustreOperations.html#50438194_marker-1306313">1</link></para>
138 <para>configuring</para>
140 <para>adaptive timeouts, <link xl:href="LustreProc.html#50438271_marker-1293381">1</link></para>
142 <para>root squash, <link xl:href="ManagingSecurity.html#50438221_marker-1294610">1</link></para>
145 <title>D<anchor xml:id="dbdoclet.50438146_D" xreflabel=""/></title>
147 <para>debug_mb, <link xl:href="LustreDebugging.html#50438274_marker-1295885">1</link></para>
148 <para>debugging</para>
150 <para>adding debugging to source code, <link xl:href="LustreDebugging.html#50438274_marker-1296026">1</link></para>
152 <para>buffer, <link xl:href="LustreDebugging.html#50438274_marker-1295885">1</link></para>
154 <para>controlling the kernel debug log, <link xl:href="LustreDebugging.html#50438274_marker-1295955">1</link></para>
156 <para>finding Lustre UUID of an OST, <link xl:href="LustreDebugging.html#50438274_marker-1296007">1</link></para>
158 <para>finding memory leaks, <link xl:href="LustreDebugging.html#50438274_marker-1296153">1</link></para>
160 <para>looking at disk content, <link xl:href="LustreDebugging.html#50438274_marker-1295982">1</link></para>
162 <para>messages, <link xl:href="LustreDebugging.html#50438274_marker-1295746">1</link></para>
164 <para>Ptlrpc request history, <link xl:href="LustreDebugging.html#50438274_marker-1296099">1</link></para>
166 <para>sample lctl run, <link xl:href="LustreDebugging.html#50438274_marker-1295914">1</link></para>
168 <para>tracing lock traffic, <link xl:href="LustreDebugging.html#50438274_marker-1296017">1</link></para>
170 <para>troubleshooting with strace, <link xl:href="LustreDebugging.html#50438274_marker-1295969">1</link></para>
172 <para>directory statahead, using, <link xl:href="LustreProc.html#50438271_marker-1294292">1</link></para>
174 <para>downed routers, <link xl:href="ManagingLNET.html#50438203_marker-1288828">1</link></para>
177 <title>E<anchor xml:id="dbdoclet.50438146_E" xreflabel=""/></title>
179 <para>e2fsprogs, <link xl:href="InstallingLustre.html#50438261_marker-1292893">1</link></para>
181 <para>e2scan, <link xl:href="SystemConfigurationUtilities_HTML.html#50438219_marker-1317398">1</link></para>
183 <para>Elan (Quadrics Elan), <link xl:href="UnderstandingLustreNetworking.html#50438191_marker-1289889">1</link></para>
185 <para>environmental requirements, <link xl:href="InstallingLustre.html#50438261_marker-1292914">1</link></para>
187 <para>error messages, <link xl:href="LustreTroubleshooting.html#50438198_marker-1291323">1</link></para>
189 <para>error numbers, <link xl:href="LustreTroubleshooting.html#50438198_marker-1296744">1</link></para>
191 <para>external journal, creating, <link xl:href="ConfiguringStorage.html#50438208_marker-1289927">1</link></para>
194 <title>F<anchor xml:id="dbdoclet.50438146_F" xreflabel=""/></title>
196 <para>failover, <link xl:href="UnderstandingFailover.html#50438253_marker-1304330">1</link></para>
198 <para>capabilities, <link xl:href="UnderstandingFailover.html#50438253_marker-1304336">1</link></para>
200 <para>configuration types, <link xl:href="UnderstandingFailover.html#50438253_marker-1304346">1</link></para>
202 <para>configuring, <link xl:href="LustreOperations.html#50438194_marker-1306313">1</link></para>
204 <para>failover and MMP, <link xl:href="ManagingFailover.html#50438213_marker-1301522">1</link></para>
206 <para>MDT (active/passive), <link xl:href="UnderstandingFailover.html#50438253_marker-1304373">1</link></para>
208 <para>OST (active/active), <link xl:href="UnderstandingFailover.html#50438253_marker-1304382">1</link></para>
210 <para>file formats, quotas, <link xl:href="ConfiguringQuotas.html#50438217_marker-1290326">1</link></para>
212 <para>file readahead, using, <link xl:href="LustreProc.html#50438271_marker-1294292">1</link></para>
214 <para>file size, maximum, <link xl:href="SettingUpLustreSystem.html#50438256_marker-1290761">1</link></para>
216 <para>file striping, <link xl:href="ManagingStripingFreeSpace.html#50438209_marker-1291832">1</link></para>
218 <para>file system size, maximum, <link xl:href="SettingUpLustreSystem.html#50438256_marker-1290753">1</link></para>
220 <para>filefrag command, <link xl:href="UserUtilities_HTML.html#50438206_marker-1305920">1</link>, <link xl:href="LustreProgrammingInterfaces.html#50438291_marker-1294565">2</link></para>
222 <para>filename length, maximum, <link xl:href="SettingUpLustreSystem.html#50438256_marker-1290791">1</link></para>
224 <para>flock utility, <link xl:href="SystemConfigurationUtilities_HTML.html#50438219_marker-1295910">1</link></para>
225 <para>free space management</para>
227 <para>adjusting weighting between free space and location, <link xl:href="ManagingStripingFreeSpace.html#50438209_marker-1294033">1</link></para>
229 <para>round-robin allocator, <link xl:href="ManagingStripingFreeSpace.html#50438209_marker-1293988">1</link></para>
231 <para>weighted allocator, <link xl:href="ManagingStripingFreeSpace.html#50438209_marker-1294020">1</link></para>
233 <para>free space, managing, <link xl:href="ManagingStripingFreeSpace.html#50438209_marker-1295520">1</link></para>
236 <title>H<anchor xml:id="dbdoclet.50438146_G" xreflabel=""/><anchor xml:id="dbdoclet.50438146_H" xreflabel=""/></title>
238 <para>HA software, <link xl:href="InstallingLustre.html#50438261_marker-1292902">1</link></para>
240 <para>handling full OSTs, <link xl:href="ManagingFileSystemIO.html#50438211_marker-1295529">1</link></para>
242 <para>handling timeouts, <link xl:href="UserUtilities_HTML.html#50438206_marker-1306030">1</link></para>
245 <title>I<anchor xml:id="dbdoclet.50438146_I" xreflabel=""/></title>
246 <para>I/O options</para>
248 <para>checksums, <link xl:href="ManagingFileSystemIO.html#50438211_marker-1291974">1</link></para>
250 <para>I/O tunables, <link xl:href="LustreProc.html#50438271_marker-1290508">1</link></para>
252 <para>I/O, direct, performing, <link xl:href="ManagingFileSystemIO.html#50438211_marker-1291962">1</link></para>
254 <para>inode number, OST, <link xl:href="SettingUpLustreSystem.html#50438256_marker-1293235">1</link></para>
256 <para>inode size, MDT, <link xl:href="SettingUpLustreSystem.html#50438256_marker-1293231">1</link></para>
258 <para>installing Lustre, environmental requirements, <link xl:href="InstallingLustre.html#50438261_marker-1292914">1</link></para>
260 <para>installing Lustre, HA software, <link xl:href="InstallingLustre.html#50438261_marker-1292902">1</link></para>
262 <para>installing Lustre, memory requirements, <link xl:href="SettingUpLustreSystem.html#50438256_marker-1292212">1</link></para>
264 <para>installing Lustre, required tools / utilities, <link xl:href="InstallingLustre.html#50438261_marker-1292890">1</link></para>
266 <para>interoperability, <link xl:href="UpgradingLustre.html#50438205_marker-1293321">1</link></para>
267 <para>interpreting</para>
269 <para>adaptive timeouts, <link xl:href="LustreProc.html#50438271_marker-1293383">1</link></para>
272 <title>K<anchor xml:id="dbdoclet.50438146_J" xreflabel=""/><anchor xml:id="dbdoclet.50438146_K" xreflabel=""/></title>
274 <para>key features, <link xl:href="UnderstandingLustre.html#50438250_marker-1293792">1</link></para>
277 <title>L<anchor xml:id="dbdoclet.50438146_L" xreflabel=""/></title>
279 <para>l_getidentity, <link xl:href="SystemConfigurationUtilities_HTML.html#50438219_marker-1318227">1</link>, <link xl:href="SystemConfigurationUtilities_HTML.html#50438219_marker-1317750">2</link>, <link xl:href="SystemConfigurationUtilities_HTML.html#50438219_marker-1317690">3</link></para>
281 <para>lctl, <link xl:href="SystemConfigurationUtilities_HTML.html#50438219_marker-1302539">1</link></para>
283 <para>setting parameters, <link xl:href="LustreOperations.html#50438194_marker-1305718">1</link></para>
285 <para>lfs command, <link xl:href="UserUtilities_HTML.html#50438206_marker-1305209">1</link></para>
287 <para>lfsck command, <link xl:href="UserUtilities_HTML.html#50438206_marker-1305843">1</link></para>
289 <para>ll_recover_lost_found_objs, <link xl:href="SystemConfigurationUtilities_HTML.html#50438219_marker-1317865">1</link></para>
291 <para>llapi, <link xl:href="SettingLustreProperties_HTML.html#50438215_marker-1297700">1</link></para>
293 <para>llstat, <link xl:href="SystemConfigurationUtilities_HTML.html#50438219_marker-1318052">1</link></para>
296 <para>starting, <link xl:href="ManagingLNET.html#50438203_marker-1287400">1</link></para>
298 <para>stopping, <link xl:href="ManagingLNET.html#50438203_marker-1288543">1</link></para>
299 <para>LNET self-test</para>
301 <para>commands, <link xl:href="LNETSelfTest.html#50438223_marker-1298562">1</link></para>
302 <para>Load balancing with InfiniBand</para>
304 <para>modprobe.conf, <link xl:href="ManagingLNET.html#50438203_marker-1290316">1</link></para>
306 <para>locking proc entries, <link xl:href="LustreProc.html#50438271_marker-1290874">1</link></para>
308 <para>lst, <link xl:href="SystemConfigurationUtilities_HTML.html#50438219_marker-1318121">1</link></para>
311 <para>administration, aborting recovery, <link xl:href="LustreMaintenance.html#50438199_marker-1299023">1</link></para>
313 <para>administration, changing a server NID, <link xl:href="LustreMaintenance.html#50438199_marker-1305737">1</link></para>
315 <para>administration, determining which machine is serving an OST, <link xl:href="LustreMaintenance.html#50438199_marker-1305741">1</link></para>
317 <para>administration, failout / failover mode for OSTs, <link xl:href="LustreOperations.html#50438194_marker-1298926">1</link></para>
319 <para>administration, finding nodes in the file system, <link xl:href="LustreMaintenance.html#50438199_marker-1298897">1</link></para>
321 <para>administration, mounting a server, <link xl:href="LustreOperations.html#50438194_marker-1298863">1</link></para>
323 <para>administration, mounting a server without Lustre service, <link xl:href="LustreMaintenance.html#50438199_marker-1298918">1</link></para>
325 <para>administration, regenerating Lustre configuration logs, <link xl:href="LustreMaintenance.html#50438199_marker-1305736">1</link></para>
327 <para>administration, removing and restoring OSTs, <link xl:href="LustreMaintenance.html#50438199_marker-1298976">1</link></para>
329 <para>administration, running multiple Lustre file systems, <link xl:href="LustreOperations.html#50438194_marker-1298939">1</link></para>
331 <para>administration, setting and retrieving Lustre parameters, <link xl:href="LustreOperations.html#50438194_marker-1302467">1</link></para>
333 <para>administration, starting Lustre, <link xl:href="LustreOperations.html#50438194_marker-1305696">1</link></para>
335 <para>administration, working with inactive OSTs, <link xl:href="LustreMaintenance.html#50438199_marker-1298888">1</link></para>
337 <para>adminstration, unmounting a server, <link xl:href="LustreOperations.html#50438194_marker-1298879">1</link></para>
339 <para>components, <link xl:href="UnderstandingLustre.html#50438250_marker-1293887">1</link></para>
341 <para>configuration example, <link xl:href="ConfiguringLustre.html#50438267_marker-1290955">1</link></para>
343 <para>COS, <link xl:href="LustreRecovery.html#50438268_marker-1292182">1</link></para>
345 <para>failover, <link xl:href="UnderstandingFailover.html#50438253_marker-1304330">1</link></para>
347 <para>installing, environmental requirements, <link xl:href="InstallingLustre.html#50438261_marker-1292914">1</link></para>
349 <para>installing, HA software, <link xl:href="InstallingLustre.html#50438261_marker-1292902">1</link></para>
351 <para>installing, memory requirements, <link xl:href="SettingUpLustreSystem.html#50438256_marker-1292212">1</link></para>
353 <para>installing, required tools / utilities, <link xl:href="InstallingLustre.html#50438261_marker-1292890">1</link></para>
355 <para>interoperability, <link xl:href="UpgradingLustre.html#50438205_marker-1293321">1</link></para>
357 <para>key features, <link xl:href="UnderstandingLustre.html#50438250_marker-1293792">1</link></para>
359 <para>metadata replay, <link xl:href="LustreRecovery.html#50438268_marker-1292175">1</link></para>
361 <para>orphaned objects, <link xl:href="TroubleShootingRecovery.html#50438225_marker-1292187">1</link></para>
363 <para>parameters, reporting current, <link xl:href="LustreOperations.html#50438194_marker-1302474">1</link></para>
365 <para>parameters, setting and retrieving, <link xl:href="LustreOperations.html#50438194_marker-1302467">1</link></para>
367 <para>parameters, setting with lctl, <link xl:href="LustreOperations.html#50438194_marker-1305718">1</link></para>
369 <para>parameters, setting with mkfs.lustre, <link xl:href="LustreOperations.html#50438194_marker-1305722">1</link></para>
371 <para>parameters, setting with tunefs.lustre, <link xl:href="LustreOperations.html#50438194_marker-1305720">1</link></para>
373 <para>recovering from corruption in Lustre file system, <link xl:href="TroubleShootingRecovery.html#50438225_marker-1292186">1</link></para>
375 <para>recovering from errors on backing file system, <link xl:href="TroubleShootingRecovery.html#50438225_marker-1292184">1</link></para>
377 <para>recovery, client eviction, <link xl:href="LustreRecovery.html#50438268_marker-1292164">1</link></para>
379 <para>reply reconstruction, <link xl:href="LustreRecovery.html#50438268_marker-1292176">1</link></para>
381 <para>scaling, <link xl:href="ConfiguringLustre.html#50438267_marker-1292440">1</link></para>
383 <para>starting, <link xl:href="LustreOperations.html#50438194_marker-1305696">1</link></para>
385 <para>upgrading, 1.6.x to 1.8.x, <link xl:href="UpgradingLustre.html#50438205_marker-1294652">1</link></para>
387 <para>VBR, introduction, <link xl:href="LustreRecovery.html#50438268_marker-1288580">1</link></para>
389 <para>VBR, tips, <link xl:href="LustreRecovery.html#50438268_marker-1288584">1</link></para>
391 <para>VBR, working with, <link xl:href="LustreRecovery.html#50438268_marker-1288583">1</link></para>
392 <para>Lustre I/O kit</para>
394 <para>downloading, <link xl:href="BenchmarkingTests.html#50438212_marker-1289913">1</link></para>
396 <para>obdfilter_survey tool, <link xl:href="BenchmarkingTests.html#50438212_marker-1289957">1</link></para>
398 <para>ost_survey tool, <link xl:href="BenchmarkingTests.html#50438212_marker-1290067">1</link></para>
400 <para>sgpdd_survey tool, <link xl:href="BenchmarkingTests.html#50438212_marker-1302844">1</link></para>
402 <para>Lustre Monitoring Tool (LMT), <link xl:href="LustreMonitoring.html#50438273_marker-1297386">1</link></para>
404 <para>lustre_rmmod.sh, <link xl:href="SystemConfigurationUtilities_HTML.html#50438219_marker-1317379">1</link></para>
406 <para>lustre_rsync, <link xl:href="SystemConfigurationUtilities_HTML.html#50438219_marker-1317224">1</link></para>
409 <title>M<anchor xml:id="dbdoclet.50438146_M" xreflabel=""/></title>
412 <para>filefrag, <link xl:href="UserUtilities_HTML.html#50438206_marker-1305920">1</link>, <link xl:href="LustreProgrammingInterfaces.html#50438291_marker-1294565">2</link></para>
414 <para>lfs, <link xl:href="UserUtilities_HTML.html#50438206_marker-1305209">1</link></para>
416 <para>lfsck, <link xl:href="UserUtilities_HTML.html#50438206_marker-1305843">1</link></para>
418 <para>mount, <link xl:href="UserUtilities_HTML.html#50438206_marker-1305992">1</link></para>
421 <para>user/group cache upcall, <link xl:href="LustreProgrammingInterfaces.html#50438291_marker-1293215">1</link></para>
424 <para>LNET options, <link xl:href="ConfigurationFilesModuleParameters.html#50438293_marker-1293320">1</link></para>
426 <para>module options, <link xl:href="ConfigurationFilesModuleParameters.html#50438293_marker-1293311">1</link></para>
428 <para>MX LND, <link xl:href="ConfigurationFilesModuleParameters.html#50438293_marker-1295997">1</link></para>
430 <para>Portals LND (Linux), <link xl:href="ConfigurationFilesModuleParameters.html#50438293_marker-1293719">1</link></para>
432 <para>SOCKLND kernel TCP/IP LND, <link xl:href="ConfigurationFilesModuleParameters.html#50438293_marker-1293448">1</link></para>
435 <para>application profiling utilties, <link xl:href="SystemConfigurationUtilities_HTML.html#50438219_marker-1313051">1</link></para>
437 <para>l_getidentity, <link xl:href="SystemConfigurationUtilities_HTML.html#50438219_marker-1318227">1</link>, <link xl:href="SystemConfigurationUtilities_HTML.html#50438219_marker-1317750">2</link>, <link xl:href="SystemConfigurationUtilities_HTML.html#50438219_marker-1317690">3</link></para>
439 <para>lctl, <link xl:href="SystemConfigurationUtilities_HTML.html#50438219_marker-1302539">1</link></para>
441 <para>ll_recover_lost_found_objs, <link xl:href="SystemConfigurationUtilities_HTML.html#50438219_marker-1317865">1</link></para>
443 <para>llstat, <link xl:href="SystemConfigurationUtilities_HTML.html#50438219_marker-1318052">1</link></para>
445 <para>lst, <link xl:href="SystemConfigurationUtilities_HTML.html#50438219_marker-1318121">1</link></para>
447 <para>lustre_rsync, <link xl:href="SystemConfigurationUtilities_HTML.html#50438219_marker-1317224">1</link></para>
449 <para>mkfs.lustre, <link xl:href="SystemConfigurationUtilities_HTML.html#50438219_marker-1316695">1</link></para>
451 <para>mount.lustre, <link xl:href="SystemConfigurationUtilities_HTML.html#50438219_marker-1310637">1</link></para>
453 <para>plot-llstat, <link xl:href="SystemConfigurationUtilities_HTML.html#50438219_marker-1317989">1</link></para>
455 <para>proc statistics, <link xl:href="SystemConfigurationUtilities_HTML.html#50438219_marker-1313052">1</link></para>
457 <para>routerstat, <link xl:href="SystemConfigurationUtilities_HTML.html#50438219_marker-1317921">1</link></para>
459 <para>system configuration utilities, <link xl:href="SystemConfigurationUtilities_HTML.html#50438219_marker-1313048">1</link></para>
461 <para>test/debug utilities, <link xl:href="SystemConfigurationUtilities_HTML.html#50438219_marker-1313053">1</link></para>
463 <para>tunefs.lustre, <link xl:href="SystemConfigurationUtilities_HTML.html#50438219_marker-1317076">1</link></para>
465 <para>managing free space, <link xl:href="ManagingStripingFreeSpace.html#50438209_marker-1295520">1</link></para>
468 <para>file size, <link xl:href="SettingUpLustreSystem.html#50438256_marker-1290761">1</link></para>
470 <para>file system size, <link xl:href="SettingUpLustreSystem.html#50438256_marker-1290753">1</link></para>
472 <para>filename/pathname length, <link xl:href="SettingUpLustreSystem.html#50438256_marker-1290791">1</link></para>
474 <para>number of clients, <link xl:href="SettingUpLustreSystem.html#50438256_marker-1290746">1</link></para>
476 <para>number of files in a directory, <link xl:href="SettingUpLustreSystem.html#50438256_marker-1290770">1</link></para>
478 <para>number of open files, <link xl:href="SettingUpLustreSystem.html#50438256_marker-1290800">1</link></para>
480 <para>number of OSTs and MDTs, <link xl:href="SettingUpLustreSystem.html#50438256_marker-1290738">1</link></para>
482 <para>stripe count, <link xl:href="SettingUpLustreSystem.html#50438256_marker-1290714">1</link></para>
484 <para>stripe size, <link xl:href="SettingUpLustreSystem.html#50438256_marker-1290722">1</link></para>
487 <para>history, <link xl:href="LustreProc.html#50438271_marker-1297045">1</link></para>
488 <para>mballoc3</para>
490 <para>tunables, <link xl:href="LustreProc.html#50438271_marker-1290795">1</link></para>
493 <para>service thread count, <link xl:href="LustreTuning.html#50438272_marker-1293755">1</link></para>
496 <para>failover, <link xl:href="UnderstandingFailover.html#50438253_marker-1304373">1</link></para>
498 <para>inode size, <link xl:href="SettingUpLustreSystem.html#50438256_marker-1293231">1</link></para>
500 <para>memory requirements, <link xl:href="SettingUpLustreSystem.html#50438256_marker-1292212">1</link></para>
502 <para>metadata replay, <link xl:href="LustreRecovery.html#50438268_marker-1292175">1</link></para>
505 <para>stripe size, <link xl:href="SettingUpLustreSystem.html#50438256_marker-1290730">1</link></para>
507 <para>mkfs.lustre, <link xl:href="SystemConfigurationUtilities_HTML.html#50438219_marker-1316695">1</link></para>
509 <para>setting parameters, <link xl:href="LustreOperations.html#50438194_marker-1305722">1</link></para>
512 <para>MMP and failover, <link xl:href="ManagingFailover.html#50438213_marker-1301522">1</link></para>
514 <para>modprobe.conf, <link xl:href="ManagingLNET.html#50438203_marker-1290316">1</link></para>
515 <para>monitoring</para>
517 <para>changelogs, <link xl:href="LustreMonitoring.html#50438273_marker-1297383">1</link></para>
519 <para>CollectL, <link xl:href="LustreMonitoring.html#50438273_marker-1297391">1</link></para>
521 <para>Lustre Monitoring Tool, <link xl:href="LustreMonitoring.html#50438273_marker-1297386">1</link></para>
523 <para>mount command, <link xl:href="UserUtilities_HTML.html#50438206_marker-1305992">1</link></para>
525 <para>mount.lustre, <link xl:href="SystemConfigurationUtilities_HTML.html#50438219_marker-1310637">1</link></para>
527 <para>MX LND, <link xl:href="ConfigurationFilesModuleParameters.html#50438293_marker-1295997">1</link></para>
530 <title>N<anchor xml:id="dbdoclet.50438146_N" xreflabel=""/></title>
533 <para>bonding, <link xl:href="SettingUpBonding.html#50438258_marker-1301678">1</link></para>
534 <para>networks, supported</para>
536 <para>Elan (Quadrics Elan), <link xl:href="UnderstandingLustreNetworking.html#50438191_marker-1289889">1</link></para>
538 <para>ra (RapidArray), <link xl:href="UnderstandingLustreNetworking.html#50438191_marker-1289887">1</link></para>
540 <para>NID, server, changing, <link xl:href="LustreMaintenance.html#50438199_marker-1305737">1</link></para>
542 <para>number of clients, maximum, <link xl:href="SettingUpLustreSystem.html#50438256_marker-1290746">1</link></para>
544 <para>number of files in a directory, maximum, <link xl:href="SettingUpLustreSystem.html#50438256_marker-1290770">1</link></para>
546 <para>number of open files, maximum, <link xl:href="SettingUpLustreSystem.html#50438256_marker-1290800">1</link></para>
549 <title>O<anchor xml:id="dbdoclet.50438146_O" xreflabel=""/></title>
551 <para>obdfilter_survey tool, <link xl:href="BenchmarkingTests.html#50438212_marker-1289957">1</link></para>
553 <para>orphaned objects, working with, <link xl:href="TroubleShootingRecovery.html#50438225_marker-1292187">1</link></para>
556 <para>memory, determining, <link xl:href="SettingUpLustreSystem.html#50438256_marker-1292245">1</link></para>
558 <para>service thread count, <link xl:href="LustreTuning.html#50438272_marker-1294858">1</link></para>
560 <para>OSS read cache, <link xl:href="LustreProc.html#50438271_marker-1296183">1</link></para>
563 <para>failover, <link xl:href="UnderstandingFailover.html#50438253_marker-1304382">1</link></para>
565 <para>number of inodes, <link xl:href="SettingUpLustreSystem.html#50438256_marker-1293235">1</link></para>
567 <para>removing and restoring, <link xl:href="LustreMaintenance.html#50438199_marker-1298976">1</link></para>
569 <para>OST block I/O stream, watching, <link xl:href="LustreProc.html#50438271_marker-1290631">1</link></para>
571 <para>OST pools, <link xl:href="ManagingFileSystemIO.html#50438211_marker-1295531">1</link></para>
573 <para>OST, adding, <link xl:href="LustreMaintenance.html#50438199_marker-1306353">1</link></para>
575 <para>OST, determining which machine is serving, <link xl:href="LustreMaintenance.html#50438199_marker-1305741">1</link></para>
577 <para>ost_survey tool, <link xl:href="BenchmarkingTests.html#50438212_marker-1290067">1</link></para>
580 <para>adding, <link xl:href="ConfiguringLustre.html#50438267_marker-1292440">1</link></para>
582 <para>OSTs and MDTs, maximum, <link xl:href="SettingUpLustreSystem.html#50438256_marker-1290738">1</link></para>
584 <para>OSTs, full, handling, <link xl:href="ManagingFileSystemIO.html#50438211_marker-1295529">1</link></para>
587 <title>P<anchor xml:id="dbdoclet.50438146_P" xreflabel=""/></title>
589 <para>parameters, setting with lctl, <link xl:href="LustreOperations.html#50438194_marker-1305718">1</link></para>
591 <para>parameters, setting with mkfs.lustre, <link xl:href="LustreOperations.html#50438194_marker-1305722">1</link></para>
593 <para>parameters, setting with tunefs.lustre, <link xl:href="LustreOperations.html#50438194_marker-1305720">1</link></para>
595 <para>pathname length, maximum, <link xl:href="SettingUpLustreSystem.html#50438256_marker-1290791">1</link></para>
597 <para>performing direct I/O, <link xl:href="ManagingFileSystemIO.html#50438211_marker-1291962">1</link></para>
599 <para>Perl, <link xl:href="InstallingLustre.html#50438261_marker-1292899">1</link></para>
601 <para>plot-llstat, <link xl:href="SystemConfigurationUtilities_HTML.html#50438219_marker-1317989">1</link></para>
603 <para>pools, OST, <link xl:href="ManagingFileSystemIO.html#50438211_marker-1295531">1</link></para>
604 <para>Portals LND</para>
606 <para>Linux, <link xl:href="ConfigurationFilesModuleParameters.html#50438293_marker-1293719">1</link></para>
607 <para>proc entries</para>
609 <para>free space distribution, <link xl:href="LustreProc.html#50438271_marker-1296165">1</link></para>
611 <para>LNET information, <link xl:href="LustreProc.html#50438271_marker-1296164">1</link></para>
613 <para>locating file systems and servers, <link xl:href="LustreProc.html#50438271_marker-1296151">1</link></para>
615 <para>locking, <link xl:href="LustreProc.html#50438271_marker-1290874">1</link></para>
617 <para>timeouts, <link xl:href="LustreProc.html#50438271_marker-1296153">1</link></para>
620 <title>Q<anchor xml:id="dbdoclet.50438146_Q" xreflabel=""/></title>
622 <para>Quadrics Elan, <link xl:href="UnderstandingLustreNetworking.html#50438191_marker-1289889">1</link></para>
624 <para>quota limits, <link xl:href="ConfiguringQuotas.html#50438217_marker-1290282">1</link></para>
626 <para>quota statistics, <link xl:href="ConfiguringQuotas.html#50438217_marker-1290343">1</link></para>
629 <para>administering, <link xl:href="ConfiguringQuotas.html#50438217_marker-1290170">1</link></para>
631 <para>allocating, <link xl:href="ConfiguringQuotas.html#50438217_marker-1290226">1</link></para>
633 <para>creating files, <link xl:href="ConfiguringQuotas.html#50438217_marker-1290170">1</link></para>
635 <para>enabling, <link xl:href="ConfiguringQuotas.html#50438217_marker-1290128">1</link></para>
637 <para>file formats, <link xl:href="ConfiguringQuotas.html#50438217_marker-1290326">1</link></para>
639 <para>granted cache, <link xl:href="ConfiguringQuotas.html#50438217_marker-1290272">1</link></para>
641 <para>known issues, <link xl:href="ConfiguringQuotas.html#50438217_marker-1290269">1</link></para>
643 <para>limits, <link xl:href="ConfiguringQuotas.html#50438217_marker-1290282">1</link></para>
645 <para>statistics, <link xl:href="ConfiguringQuotas.html#50438217_marker-1290343">1</link></para>
647 <para>working with, <link xl:href="ConfiguringQuotas.html#50438217_marker-1290118">1</link></para>
650 <title>R<anchor xml:id="dbdoclet.50438146_R" xreflabel=""/></title>
652 <para>ra (RapidArray), <link xl:href="UnderstandingLustreNetworking.html#50438191_marker-1289887">1</link></para>
655 <para>creating an external journal, <link xl:href="ConfiguringStorage.html#50438208_marker-1289927">1</link></para>
657 <para>formatting options, <link xl:href="ConfiguringStorage.html#50438208_marker-1291599">1</link></para>
659 <para>handling degraded arrays, <link xl:href="LustreOperations.html#50438194_marker-1307136">1</link></para>
661 <para>performance tradeoffs, <link xl:href="ConfiguringStorage.html#50438208_marker-1291593">1</link></para>
663 <para>reliability best practices, <link xl:href="ConfiguringStorage.html#50438208_marker-1291581">1</link></para>
665 <para>selecting storage for MDS or OSTs, <link xl:href="ConfiguringStorage.html#50438208_marker-1291567">1</link></para>
667 <para>RapidArray, <link xl:href="UnderstandingLustreNetworking.html#50438191_marker-1289887">1</link></para>
669 <para>readahead, tuning, <link xl:href="LustreProc.html#50438271_marker-1295183">1</link></para>
670 <para>recovery mode, failure types</para>
672 <para>client failure, <link xl:href="LustreRecovery.html#50438268_marker-1287394">1</link></para>
674 <para>MDS failure/failover, <link xl:href="LustreRecovery.html#50438268_marker-1287397">1</link></para>
676 <para>network partition, <link xl:href="LustreRecovery.html#50438268_marker-1289388">1</link></para>
678 <para>OST failure, <link xl:href="LustreRecovery.html#50438268_marker-1289240">1</link></para>
680 <para>recovery, aborting, <link xl:href="LustreMaintenance.html#50438199_marker-1299023">1</link></para>
682 <para>regenerating configuration logs, <link xl:href="LustreMaintenance.html#50438199_marker-1305736">1</link></para>
684 <para>reply reconstruction, <link xl:href="LustreRecovery.html#50438268_marker-1292176">1</link></para>
686 <para>reporting current Lustre parameters, <link xl:href="LustreOperations.html#50438194_marker-1302474">1</link></para>
688 <para>required tools / utilities, <link xl:href="InstallingLustre.html#50438261_marker-1292890">1</link></para>
689 <para>root squash</para>
691 <para>configuring, <link xl:href="ManagingSecurity.html#50438221_marker-1294610">1</link></para>
693 <para>tips, <link xl:href="ManagingSecurity.html#50438221_marker-1296366">1</link></para>
695 <para>tuning, <link xl:href="ManagingSecurity.html#50438221_marker-1294611">1</link></para>
697 <para>root squash, using, <link xl:href="ManagingSecurity.html#50438221_marker-1294644">1</link></para>
699 <para>round-robin allocator, <link xl:href="ManagingStripingFreeSpace.html#50438209_marker-1293988">1</link></para>
701 <para>routers, downed, <link xl:href="ManagingLNET.html#50438203_marker-1288828">1</link></para>
703 <para>routerstat, <link xl:href="SystemConfigurationUtilities_HTML.html#50438219_marker-1317921">1</link></para>
705 <para>RPC stream tunables, <link xl:href="LustreProc.html#50438271_marker-1290514">1</link></para>
707 <para>RPC stream, watching, <link xl:href="LustreProc.html#50438271_marker-1290535">1</link></para>
710 <title>S<anchor xml:id="dbdoclet.50438146_S" xreflabel=""/></title>
712 <para>scaling Lustre, <link xl:href="ConfiguringLustre.html#50438267_marker-1292440">1</link></para>
715 <para>mounting, <link xl:href="LustreOperations.html#50438194_marker-1298863">1</link></para>
717 <para>unmounting, <link xl:href="LustreOperations.html#50438194_marker-1298879">1</link></para>
719 <para>server NID, changing, <link xl:href="LustreMaintenance.html#50438199_marker-1305737">1</link></para>
720 <para>service threads</para>
722 <para>MDS, <link xl:href="LustreTuning.html#50438272_marker-1293755">1</link></para>
724 <para>OSS, <link xl:href="LustreTuning.html#50438272_marker-1294858">1</link></para>
727 <para>SCSI I/O sizes, <link xl:href="LustreTroubleshooting.html#50438198_marker-1294800">1</link></para>
729 <para>setting and retrieving Lustre parameters, <link xl:href="LustreOperations.html#50438194_marker-1302467">1</link></para>
731 <para>sgpdd_survey tool, <link xl:href="BenchmarkingTests.html#50438212_marker-1302844">1</link></para>
733 <para>SOCKLND kernel TCP/IP LND, <link xl:href="ConfigurationFilesModuleParameters.html#50438293_marker-1293448">1</link></para>
734 <para>starting</para>
736 <para>LNET, <link xl:href="ManagingLNET.html#50438203_marker-1287400">1</link></para>
738 <para>statahead, tuning, <link xl:href="LustreProc.html#50438271_marker-1295184">1</link></para>
739 <para>stopping</para>
741 <para>LNET, <link xl:href="ManagingLNET.html#50438203_marker-1288543">1</link></para>
743 <para>strace, <link xl:href="LustreDebugging.html#50438274_marker-1295969">1</link></para>
745 <para>stripe count, maximum, <link xl:href="SettingUpLustreSystem.html#50438256_marker-1290714">1</link></para>
747 <para>stripe size, maximum, <link xl:href="SettingUpLustreSystem.html#50438256_marker-1290722">1</link></para>
749 <para>stripe size, minimum, <link xl:href="SettingUpLustreSystem.html#50438256_marker-1290730">1</link></para>
750 <para>striping</para>
752 <para>managing free space, <link xl:href="ManagingStripingFreeSpace.html#50438209_marker-1295520">1</link></para>
754 <para>size, <link xl:href="ManagingStripingFreeSpace.html#50438209_marker-1291859">1</link></para>
756 <para>striping using llapi, <link xl:href="SettingLustreProperties_HTML.html#50438215_marker-1297700">1</link></para>
757 <para>supported networks</para>
759 <para>Elan (Quadrics Elan), <link xl:href="UnderstandingLustreNetworking.html#50438191_marker-1289889">1</link></para>
761 <para>ra (RapidArray), <link xl:href="UnderstandingLustreNetworking.html#50438191_marker-1289887">1</link></para>
764 <title>T<anchor xml:id="dbdoclet.50438146_T" xreflabel=""/></title>
766 <para>timeouts, handling, <link xl:href="UserUtilities_HTML.html#50438206_marker-1306030">1</link></para>
767 <para>troubleshooting</para>
769 <para>drawbacks in doing multi-client O_APPEND writes, <link xl:href="LustreTroubleshooting.html#50438198_marker-1291520">1</link></para>
771 <para>erasing a file system, <link xl:href="LustreOperations.html#50438194_marker-1307237">1</link></para>
773 <para>error messages, <link xl:href="LustreTroubleshooting.html#50438198_marker-1291323">1</link></para>
775 <para>error numbers, <link xl:href="LustreTroubleshooting.html#50438198_marker-1296744">1</link></para>
777 <para>handling timeouts on initial Lustre setup, <link xl:href="LustreTroubleshooting.html#50438198_marker-1291503">1</link></para>
778 <para>handling/debugging "bind</para>
780 <para>address already in use" error, <link xl:href="LustreTroubleshooting.html#50438198_marker-1291446">1</link></para>
781 <para>handling/debugging "Lustre Error</para>
783 <para>xxx went back in time", <link xl:href="LustreTroubleshooting.html#50438198_marker-1291509">1</link></para>
785 <para>handling/debugging error "28", <link xl:href="LustreTroubleshooting.html#50438198_marker-1291470">1</link></para>
787 <para>identifying a missing OST, <link xl:href="LustreTroubleshooting.html#50438198_marker-1291366">1</link></para>
789 <para>improving Lustre performance when working with small files, <link xl:href="LustreTuning.html#50438272_marker-1295851">1</link></para>
791 <para>log message 'out of memory' on OST, <link xl:href="LustreTroubleshooting.html#50438198_marker-1292113">1</link></para>
792 <para>Lustre Error</para>
794 <para>"slow start_page_write", <link xl:href="LustreTroubleshooting.html#50438198_marker-1291517">1</link></para>
796 <para>OST object missing or damaged, <link xl:href="LustreTroubleshooting.html#50438198_marker-1291349">1</link></para>
798 <para>OSTs become read-only, <link xl:href="LustreTroubleshooting.html#50438198_marker-1291361">1</link></para>
800 <para>reclaiming reserved disk space, <link xl:href="LustreOperations.html#50438194_marker-1307251">1</link></para>
802 <para>recovering from an unavailable OST, <link xl:href="TroubleShootingRecovery.html#50438225_marker-1292768">1</link></para>
804 <para>replacing an existing OST or MDS, <link xl:href="LustreOperations.html#50438194_marker-1307278">1</link></para>
806 <para>reporting a Lustre bug, <link xl:href="LustreTroubleshooting.html#50438198_marker-1296753">1</link></para>
808 <para>setting SCSI I/O sizes, <link xl:href="LustreTroubleshooting.html#50438198_marker-1294800">1</link></para>
810 <para>slowdown occurs during Lustre startup, <link xl:href="LustreTroubleshooting.html#50438198_marker-1291921">1</link></para>
812 <para>triggering watchdog for PID NNN, <link xl:href="LustreTroubleshooting.html#50438198_marker-1291480">1</link></para>
813 <para>tunables</para>
815 <para>RPC stream, <link xl:href="LustreProc.html#50438271_marker-1290514">1</link></para>
817 <para>tunables, lockless, <link xl:href="LustreTuning.html#50438272_marker-1291703">1</link></para>
819 <para>tunefs.lustre, <link xl:href="SystemConfigurationUtilities_HTML.html#50438219_marker-1317076">1</link></para>
821 <para>setting parameters, <link xl:href="LustreOperations.html#50438194_marker-1305720">1</link></para>
824 <para>directory statahead, <link xl:href="LustreProc.html#50438271_marker-1295184">1</link></para>
826 <para>file readahead, <link xl:href="LustreProc.html#50438271_marker-1295183">1</link></para>
828 <para>lockless tunables, <link xl:href="LustreTuning.html#50438272_marker-1291703">1</link></para>
830 <para>MDS threads, <link xl:href="LustreTuning.html#50438272_marker-1293755">1</link></para>
832 <para>OSS threads, <link xl:href="LustreTuning.html#50438272_marker-1294858">1</link></para>
834 <para>root squash, <link xl:href="ManagingSecurity.html#50438221_marker-1294611">1</link></para>
837 <title>U<anchor xml:id="dbdoclet.50438146_U" xreflabel=""/></title>
840 <para>1.6.x to 1.8.x, <link xl:href="UpgradingLustre.html#50438205_marker-1294652">1</link></para>
842 <para>complete file system, <link xl:href="UpgradingLustre.html#50438205_marker-1293327">1</link></para>
843 <para>utilities, third-party</para>
845 <para>e2fsprogs, <link xl:href="InstallingLustre.html#50438261_marker-1292893">1</link></para>
847 <para>Perl, <link xl:href="InstallingLustre.html#50438261_marker-1292899">1</link></para>
850 <title>V<anchor xml:id="dbdoclet.50438146_V" xreflabel=""/></title>
852 <para>VBR, introduction, <link xl:href="LustreRecovery.html#50438268_marker-1288580">1</link></para>
854 <para>VBR, tips, <link xl:href="LustreRecovery.html#50438268_marker-1288584">1</link></para>
856 <para>VBR, working with, <link xl:href="LustreRecovery.html#50438268_marker-1288583">1</link></para>
858 <para>Version-based recovery (VBR), <link xl:href="LustreRecovery.html#50438268_marker-1288580">1</link></para>
861 <title>W<anchor xml:id="dbdoclet.50438146_W" xreflabel=""/></title>
863 <para>weighted allocator, <link xl:href="ManagingStripingFreeSpace.html#50438209_marker-1294020">1</link></para>
865 <para>weighting, adjusting between free space and location, <link xl:href="ManagingStripingFreeSpace.html#50438209_marker-1294033">1</link></para>
867 Begin SiteCatalyst code version: G.5.
870 End SiteCatalyst code version: G.5.
872 <informaltable frame="none">
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882 <entry align="left"><para>Lustre 2.0 Operations Manual</para></entry>
883 <entry align="right"><para>821-2076-10</para></entry>
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914 <para><link xl:href="copyright.html">Copyright</link> © 2011, Oracle and/or its affiliates. All rights reserved.</para>