managing celerra statistics

EMC® Celerra® Network ServerRelease 6.0

Managing Celerra StatisticsP/N 300-009-994

REV A01

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Published September 2010

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2 Managing Celerra Statistics 6.0

Contents

Preface.....................................................................................................5

Chapter 1: Introduction...........................................................................7System requirements...............................................................................................8User interface choices.............................................................................................8Related Information................................................................................................8

Chapter 2: Concepts...............................................................................9Performance statistics summaries.......................................................................10Performance statistics tables................................................................................11

Chapter 3: Managing............................................................................15Display performance statistics summaries........................................................16

Display a summary of system statistics...................................................17Display a summary of CIFS protocol statistics.......................................20Display a summary for NFS protocol statistics.......................................21Display a summary statistics for caches...................................................22

Display performance statistics tables.................................................................23Display network device statistics..............................................................24Display basic volume statistics..................................................................25Display meta volume or file system statistics.........................................28Display CIFS operations statistics.............................................................31Display NFS operations statistics..............................................................32

Sort by field name..................................................................................................33

Chapter 4: Troubleshooting..................................................................35EMC E-Lab Interoperability Navigator..............................................................36

Managing Celerra Statistics 6.0 3

Error messages.......................................................................................................36EMC Training and Professional Services...........................................................36

Glossary..................................................................................................39

Index.......................................................................................................41


Contents

Preface

As part of an effort to improve and enhance the performance and capabilities of its product lines,EMC periodically releases revisions of its hardware and software. Therefore, some functions describedin this document may not be supported by all versions of the software or hardware currently in use.For the most up-to-date information on product features, refer to your product release notes.

If a product does not function properly or does not function as described in this document, pleasecontact your EMC representative.


Special notice conventions

EMC uses the following conventions for special notices:

CAUTION: A caution contains information essential to avoid data loss or damage to the systemor equipment.

Important: An important note contains information essential to operation of the software.

Note: A note presents information that is important, but not hazard-related.

Hint: A note that provides suggested advice to users, often involving follow-on activity for aparticular action.

Where to get help

EMC support, product, and licensing information can be obtained as follows:

Product information — For documentation, release notes, software updates, or forinformation about EMC products, licensing, and service, go to the EMC Powerlinkwebsite (registration required) at http://Powerlink.EMC.com.

Troubleshooting — Go to Powerlink, search for Celerra Tools, and select CelerraTroubleshooting from the navigation panel on the left.

Technical support — For technical support, go to EMC Customer Service on Powerlink.After logging in to the Powerlink website, go to Support ➤ Request Support. To opena service request through Powerlink, you must have a valid support agreement.Contact your EMC Customer Support Representative for details about obtaining avalid support agreement or to answer any questions about your account.

Note: Do not request a specific support representative unless one has already been assigned toyour particular system problem.

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Preface

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1

Introduction

This document provides an overview of the performance statistics facilityused to monitor system statistics for the EMC Celerra Network Server.Monitoring performance, protocol, and system statistics is essential toensure the optimum performance of the Celerra Network Server. Use theperformance statistics facility to gather and display statistical informationin an easy-to-use format that can be customized for your needs. Statisticscan be viewed as a summary or as a detailed table that can be customized.Chapter 2 provides more details about Celerra performance statistics andfeatures.

This document is part of the Celerra Network Server documentation setand is intended for system administrators and support engineers familiarwith the command line interface. These procedures presume a basicknowledge of the Celerra Network Server.

Topics included are:◆ System requirements on page 8◆ User interface choices on page 8◆ Related Information on page 8


System requirements

Table 1 on page 8 describes the EMC® Celerra® Network Server software, hardware,network, and storage configurations.

Table 1. System requirements

Celerra Network Server version 6.0 or laterSoftware

No specific hardware requirementsHardware

No specific network requirementsNetwork

No specific storage requirementsStorage

User interface choices

This document describes how to configure performance statistics by using the commandline interface (CLI). You cannot use other Celerra management applications to configureperformance statistics.

Related Information

Specific information related to the features and functionality described in this document areincluded in:

◆ Celerra Network Server Command Reference Manual

◆ Celerra Network Server Parameters Guide

◆ Online Celerra man pages


Introduction

2

Concepts

The performance statistics facility gathers and displays statisticalinformation in an easy-to-use format that can be customized. Thisinformation can be used to diagnose performance issues affecting theCelerra Network Server.

You can view performance statistics as a:

◆ Summary of basic, CIFS, NFS, or cache statistics◆ Default table for each specified statistic◆ Table, where the format of the information displayed can be modified

When you view performance statistics as a table, idle rows (where noneof the values have changed from the previous sample) are not displayedin a sample output. However, the summary termination of a table willdisplay all rows, including idle ones.

Topics included are:◆ Performance statistics summaries on page 10◆ Performance statistics tables on page 11


Performance statistics summaries

Summary statistics provide an overview of high-level system statistics. The four choices fora summary report are basic, CIFS, NFS, and caches. For each summary, you can specify:

◆ Number of output samples by using the -count option◆ Number of seconds between intervals by using the -interval option◆ Appearance of a termination summary by using the -terminationsummary option◆ Print format by using the -format option◆ Sorted Sets based on field values by using the -sort option◆ Sorted Sets in ascending or descending order by using the -order option◆ Limited Set statistics of line output by using the -lines option◆ Display types by using the -type option◆ Table titles by using the -titles option

An overall summary is provided for every command. The default time interval for eachdisplay is 15 seconds. The interval can be changed by using the -interval option. The numberof polls can be changed by using the -count option.

The term kibibytes comes from the kilo binary and stands for 1024 in the ISO for InternationalSystem of Units.

Using the -monitor options in the server_stats command

The -monitor option takes a comma-separated list of statpath and statgroup names. Incases where stats are available for multiple elements, the user can specify an elementname or use 'ALL-ELEMENTS' to refer to all elements at once. Any duplicate statpathor statgroup names is consolidated and reported once. The options below are onlyapplicable to Set and Correlated Set statpath names:

[-sort <field_name>]: Sorts a Set based on <field_name> values.

[-order {asc|desc}]: Sorted Sets can be ordered in ascending or descending order.

[-lines <lines_of_output>]: Sets output can be limited to display the Set statistics<lines_of_output> lines.

Using the nas_stats command to create statgroups

The nas_stats command allows the user to manage Statistics Groups. There are two typesof Statistics Groups: System-defined and User-defined groups. System-defined statisticsgroups are created as part of the installation (or upgrade) process. It creates a statisticsgroup and specifies what statpath names it includes. It also allows the nesting ofstatgroups by adding existing statgroups to new statgroups. Statgroup names can be


Concepts

used with the -info request. A statgroup name is limited to 255 characters. Space, slash,back slash, quote, double quote, and comma are the illegal characters in it.

Basic statistics

The basic option displays the CPU utilization for the time interval and the networkkibibytes sent, received, read, and written. The basic option provides a simple pulse orhealth check of the system.

CIFS statistics

The cifs option displays a summary of the CIFS protocol statistics, including read andwrite operations and active connections.

NFS statistics

The nfs option displays a summary of the NFS protocol statistics, including read andwrite operations and active threads.

Cache statistics

The caches option displays a summary of statistics that are affecting cache, such as theDirectory Name Lookup Cache (DNLC) ratio, the open file cache hit, and the kernelbuffer cache hit ratio.

Performance statistics tables

When using the -table option, statistics are displayed in table format either by default modeor in a modifiable display. Multiple tables can be displayed by specifying table collectionsin a comma-separated list. Available table collections are:

◆ Network device statistics (netDevices-std)◆ Basic volume statistics (diskVolumes-std)◆ Metavolume or file system statistics (metaVolumes-std)◆ cifsOps-std◆ nfsOps-std

Previously defined summary and table collections have been converted to system-definedstatistics groups that can be used as arguments with the new -monitor option:

server_stats collection nameSystem-defined statistics group name

-summary basicbasic-std

-summary cachescaches-std

Performance statistics tables 11

Concepts

server_stats collection nameSystem-defined statistics group name

-summary cifscifs-std

-summary nfsnfs-std

-table cifscifsOps-std

-table dvoldiskVolumes-std

-table fsvolmetaVolumes-std

-table netnetDevices-std

-table nfsnfsOps-std

Each table collection displays statistics relative to the network, volume, or operation asspecified. For each table, you can specify the:

◆ Number of lines of output, by using the -count option◆ Number of seconds between intervals, by using the -interval option◆ Appearance of a termination summary, by using the -terminationsummary option◆ Print format, by using the -format option◆ Display types, by using the -type option◆ Table titles, by using the -titles option

An overall summary is provided for every command. The time interval for each display is15 seconds by default, but can be changed by using the -interval option. The number of pollscan be changed by using the -count option.

Network device statistics (netDevices-std)

The network device statistics reported for each interval are the name of the device, thenetwork kibibytes and packets sent and received per second, and the input and outputerrors encountered.

Basic volume statistics (diskVolumes-std)

The basic volume statistics reported for each interval are the name and queue depth ofthe disk volume, the number of kibibytes read and sent per second, and the number andsize of read and write operations.

Metavolume or file system statistics (metaVolumes-std)

The mounted file systems statistics reported for each interval are the name and associatedmetavolume, and the number, average size, and percentage of total metavolume readand write requests.


Concepts

CIFS statistics (cifsOps-std)

The CIFS statistics reported for each interval are the name of the CIFS operation, thenumber of calls to this operation, the percent total, and the average time in microsecondsconsumed by the call.

NFS statistics (nfsOps-std)

The NFS statistics reported for each interval are the name of the NFS operation, thenumber of calls to this operation, the percent total, and the average time in microsecondsconsumed by the call.

Performance statistics tables 13

Concepts


Concepts

3

Managing

The tasks to manage performance statistics are:◆ Display performance statistics summaries on page 16◆ Display performance statistics tables on page 23◆ Sort by field name on page 33


Display performance statistics summaries

Summary statistics can be reported for basic system statistics (default), CIFS, NFS, or cache.You can specify how the statistics are reported by using the -count, -interval,-terminationsummary, -format, or -titles options.

The tasks to display performance statistics summaries include:

◆ Display a summary of system statistics on page 17◆ Display a summary of CIFS protocol statistics on page 20◆ Display a summary for NFS protocol statistics on page 21◆ Display a summary statistics for caches on page 22


Managing

Display a summary of system statistics

A basic health check displays CPU utilization, the number of network kibibytes sent andreceived, and the number of storage system kibibytes read and written.

Action

To display the basic-std group, use this command syntax:

$ server_stats <movername> -monitor basic-std -interval <seconds> -count<count> -type {rate|diff|accu}

where:

<movername> = name of the Data Mover

<seconds> = number of seconds in each interval

<count> = number of reports

Example:

To display the basic-std group by indicating the rate of change since the previous sample, type:

$ server_stats server_2 -monitor basic-std -interval 5 -count 5 -type rate

Output

server_2 CPU Network Network dVol dVolTimestamp Util In Out Read Write

% KiB/s KiB/s KiB/s KiB/s02:53:09 33 88618 729 9988 8973002:53:11 61 142057 1087 18632 16707602:53:13 29 98110 762 8976 7859902:53:15 46 109783 836 14288 12571702:53:17 34 111847 886 10652 95719

server_2 CPU Network Network dVol dVolSummary Util In Out Read Write

% KiB/s KiB/s KiB/s KiB/sMinimum 29 88618 729 8976 78599Average 41 110083 860 12507 111368Maximum 61 142057 1087 18632 167076

Note

Column definitions:Timestamp - Time the poll was taken.CPU Util - CPU utilization in percentage in this interval.Network In KiB/s - Network kibibytes received over all network interfaces.Network Out KiB/s - Network kibibytes sent over all network interfaces.dVol Read KiB/s - Storage kibibytes received from all server-storage inter-faces.dVol Write Kib/s - Storage kibibytes sent to all server-storage interfaces.

Display performance statistics summaries 17

Managing

Action



where:




Example:

To display the basic-std group by indicating the change in value since the previous sample, type:

$ server_stats server_2 -monitor basic-std -interval 5 -count 5 -type diff

Output

server_2 CPU Network Network dVol dVolTimestamp Util In KiB Out KiB Read KiB Write

% diff diff diff KiB diff02:53:29 46 267660 2136 26128 23265402:53:31 38 200668 1543 23144 21118202:53:33 46 226761 1749 26488 23055802:53:35 48 246921 1876 28720 25595702:53:37 40 212353 1673 23016 210573

server_2 CPU Network Network dVol dVolSummary Util In KiB Out KiB Read KiB Write

% diff diff diff KiB diffMinimum 38 200668 1543 23016 210573Average 44 230873 1795 25499 228185Maximum 48 267660 2136 28720 255957

Note

Column definitions:Timestamp - Time the poll was taken.CPU Util % - CPU Utilization utilized in percentage in this interval.Network In KiB diff - Network kibibytes received over all network interfacesper differential value.Network Out KiB diff - Network kibibytes sent over all network interfacesper differential value.dVol Read KiB diff - Storage kibibytes received from all server-storageinterfaces per differential value.dVol Write KiB diff - Storage kibibytes sent to all server-storage inter-faces per differential value.

Action



Managing

Action


where:




Example:

To display the basic-std group by indicating the change in value since the first sample, type:

$ server_stats server_2 -monitor basic-std -interval 5 -count 5 -type accu

Output

server_2 CPU Network Network dVol dVolTimestamp Util In Out Read Write

% KiB KiB KiB KiB02:53:48 42 236257 1880 25504 22483202:53:50 54 505640 3983 55760 50053802:53:52 29 686282 5377 74096 66249402:53:54 46 922765 7183 101704 90881302:53:56 41 1125518 8777 126640 1134362

server_2 CPU Network Network dVol dVolSummary Util In Out Read Write

% KiB KiB KiB KiBMinimum 29 236257 1880 25504 224832Average 42 695293 5440 76741 686208Maximum 54 1125518 8777 126640 1134362

Note

Column definitions:Timestamp - Time the poll was taken.CPU Util - CPU utilization in percentage in this interval.Network In KiB - Network kibibytes received over all network interfacesper accumulated value.Network Out KiB - Network kibibytes sent over all network interfaces peraccumulated value.dVol Read KiB - Storage kibibytes received from all server-storage inter-faces per accumulated value.dVol Write KiB - Storage kibibytes sent to all server-storage interfacesper accumulated value.


Managing

Display a summary of CIFS protocol statistics

Action

To display a summary of CIFS protocol statistics, use this command syntax:

$ server_stats <movername> -summary cifs -interval <seconds>-count <count>

where:




Example:

To display a summary of CIFS protocol statistics for five counts every 3 seconds, type:

$ server_stats server_2 -summary cifs -interval 3 -count 5

Output

server_2 CIFS CIFS CIFS CIFS CIFS CIFS CIFS CIFS CIFSAvg Avg

Timestamp Total Read Read Read Write Write Write Connections OpenSize Size Files

Ops/s Ops/s KiB/s Bytes Ops/s KiB/s Bytes09:57:15 1687 0 0 0 1586 6344 4096 2 209:57:18 1588 0 0 0 1487 5949 4096 2 209:57:21 1611 0 0 0 1510 6041 4096 2 209:57:24 1536 0 0 0 1435 5740 4096 2 209:57:27 1642 0 0 0 1541 6163 4096 2 2

Note

Column definitions:Timestamp — Time the poll was takenCIFS Total Ops/s — Total number of operationsCIFS Read Ops/s — CIFS read operations per second in the intervalCIFS Read KiB/s – CIFS read data response in kibibytes per secondCIFS Avg Size Read Bytes — Average read data response during the sampleCIFS Write Ops/s — CIFS write operations per secondCIFS Write KiB/s – CIFS write data response in kibibytes per secondCIFS Avg Write Size Bytes — Average write data size during the sampleCIFS connections — Number of CIFS protocol connections at the time of thesampleCIFS Open Files — Number of open CIFS files at the time of the sample


Managing

Display a summary for NFS protocol statistics

Action

To display five iterations of the summary for NFS protocol statistics, use this command syntax:

$ server_stats <movername> -monitor nfs-std -i <seconds> -c <count>

where:




Example:

To display five iterations of the summary for NFS protocol statistics with a three second interval, type:

$ server_stats server_2 -monitor nfs-std -i 3 -c 5

Output

server_2 Total NFS NFS NFS Avg NFS NFS NFS Avg NFSTimestamp NFS Read Read Read Size Write Write Write Size Active

Ops/s Ops/s KiB/s Bytes Ops/s KiB/s Bytes Threads02:55:00 441 0 0 - 446 231457 531727 2002:55:03 466 0 0 - 476 237714 511420 002:55:06 465 0 0 - 478 244053 522826 002:55:09 463 0 0 - 475 244736 527229 1002:55:12 456 0 0 - 469 244565 534356 44

server_2 Total NFS NFS NFS Avg NFS NFS NFS Avg NFSSummary NFS Read Read Read Size Write Write Write Size Active

Ops/s Ops/s KiB/s Bytes Ops/s KiB/s Bytes ThreadsMinimum 441 0 0 - 446 231457 511420 0Average 458 0 0 - 469 240505 525512 15Maximum 466 0 0 - 478 244736 534356 44

Note

Column definitions:Timestamp - Time the poll was taken.Total NFS Ops/s - Total number of operations per second.NFS Read Ops/s - NFS read operations per second in the interval.NFS Read KiB/s - NFS read data response in kibibytes per second.NFS Avg Read Size Bytes - Average read data response.NFS Write Ops/s - NFS write operations per second.NFS Write KiB/s - NFS write data response in kibibytes per second.NFS Avg Write Size Bytes - Average write data size.NFS Active Threads - Number of NFS active threads.


Managing

Display a summary statistics for caches

Action

To display iterations of the summary statistics for caches, use this command syntax:

$ server_stats <movername> -monitor caches-std -i <seconds> -c <count>

where:




Example:

To display five iterations of the summary statistics for caches with a three second interval, type:

$ server_stats server_2 -monitor caches-std -i 3 -c 5

Output

server_2 DNLC OF Cache BufferTimestamp Hit Hit Cache

Ratio % Ratio % Hit %02:55:26 - 100 7102:55:29 - 100 7202:55:32 - 100 7302:55:35 - 100 7302:55:38 - 100 72

server_2 DNLC OF Cache BufferSummary Hit Hit Cache

Ratio % Ratio % Hit %Minimum - 100 71Average - 100 72Maximum - 100 73

Note

Column definitions:Timestamp - Time the poll was taken.DNLC Hit Ratio % - Directory Name Lookup Cache (DNLC) hit ratio.OF Cache Hit Ratio % - Open file cache hit ratio.Buffer Cache Hit % - Kernel buffer cache hit ratio.


Managing

Display performance statistics tables

The tasks to display performance statistics tables include:

◆ Display network device statistics on page 24◆ Display basic volume statistics on page 25◆ Display meta volume or file system statistics on page 28◆ Display CIFS operations statistics on page 31◆ Display NFS operations statistics on page 32

Display performance statistics tables 23

Managing

Display network device statistics

The netDevices-std reports the Network devices statistics table. The table output can bealtered using the –sort, -lines, or –order table options.

Action

To display a table of network statistics, use this command syntax:

$ server_stats <movername> -monitor netDevices-std -interval <seconds> -count<count>

where:


<seconds> = number of seconds for each interval


Example:

To display the netDevices-std statistics group with a three second interval, type:

$ server_stats server_2 -monitor netDevices-std -i 3 -c 3

Output

server_2 device Network Network Network Network Network NetworkTimestamp In In In Out Out Out

Pkts/s Errors/s KiB/s Pkts/s Errors/s KiB/s02:55:52 mge0 2 0 0 1 0 0

mge1 17 0 23 9 0 1cge0 3593 0 26566 2289 0 203cge1 6912 0 50206 4444 0 378cge2 3637 0 25570 2342 0 209

02:55:55 mge0 0 0 0 0 0 0mge1 7 0 9 4 0 0cge0 3444 0 24744 2252 0 204cge1 7415 0 53354 4721 0 400cge2 3913 0 27796 2502 0 222

02:55:58 mge0 2 0 0 2 0 0mge1 32 0 39 19 0 2cge0 4029 0 29334 2594 0 230cge1 7461 0 54030 4791 0 406cge2 3902 0 27319 2505 0 223


Managing

Output

server_2 device Network Network Network Network Network NetworkSummary In In In Out Out Out

Pkts/s Errors/s KiB/s Pkts/s Errors/s KiB/sMinimum mge0 0 0 0 0 0 0

mge1 7 0 9 4 0 0cge0 3444 0 24744 2252 0 203cge1 6912 0 50206 4444 0 378cge2 3637 0 25570 2342 0 209cge3 0 0 0 0 0 0

Average mge0 1 0 0 1 0 0mge1 19 0 24 11 0 1cge0 3689 0 26882 2378 0 213cge1 7263 0 52530 4652 0 395cge2 3817 0 26895 2450 0 218cge3 0 0 0 0 0 0

Maximum mge0 2 0 0 2 0 0mge1 32 0 39 19 0 2cge0 4029 0 29334 2594 0 230cge1 7461 0 54030 4791 0 406cge2 3913 0 27796 2505 0 223cge3 0 0 0 0 0 0

Note

Column Definition:Timestamp - Time the poll was taken.Device - Name of the network device.Network In Pkts/s - Network packets received per second.Network In Errors/s - Network input errors encountered per second.Network In KiB/s - Network kibibytes received per second.Network Out Pkts/s - Network packets sent per second.Network Out Errors/s - Network output errors encountered per second.Network Out KiB/s - Network kibibytes sent per second.

Display basic volume statistics

-diskVolumes-std reports the Basic Volumes table. The table output can be altered using-sort, -lines, or -order table options.

Action

To display the diskVolumes-std statistics group, use this command syntax:

$ server_stats <movername> -m diskVolumes-std -interval <seconds> -count<count> -terminationsummary {no|yes|only}

where:





Managing

Action

Example:

To display the diskVolumes-std statistics group without the summary and with a five second interval, type:

$ server_stats server_2 -m diskVolumes-std -i 5 -c 3 -te no

Output

server_2 dVol Queue Read Read Avg Read Write Write Avg Write Util%Timestamp Depth Ops/s KiB/s Size Ops/s KiB/s Size

Bytes/s Bytes/s02:58:09 NBS1 0 0 3 8192 1 7 6827 0

root_ldisk 0 0 0 - 461 490 1090 47d7 0 113 904 8192 530 19619 37881 83d11 0 249 1995 8192 431 11640 27634 91d8 0 68 547 8192 372 11472 31607 79d12 33 424 3389 8192 609 20045 33705 99d9 0 36 291 8192 592 20339 35161 67d13 0 333 2664 8192 347 11925 35158 93d10 0 24 189 8192 385 11896 31668 63d14 36 573 4581 8192 454 20173 45468 100

02:58:12 root_ldisk 0 0 0 - 401 462 1182 44NBS6 0 0 0 - 1 3 3072 0d7 0 78 624 8192 388 13851 36523 70d11 0 216 1728 8192 470 11147 24268 84d8 0 51 411 8192 333 10672 32850 85d12 0 301 2408 8192 483 14411 30531 98

Output

server_2 dVol Queue Read Read Avg Read Write Write Avg Write Util%Timestamp Depth Ops/s KiB/s Size Ops/s KiB/s Size

Bytes/s Bytes/sd9 0 24 192 8192 422 14285 34691 50d13 0 290 2317 8192 340 10920 32856 87d10 0 19 152 8192 346 10944 32389 70d14 47 407 3259 8192 342 14288 42822 100

02:58:15 NBS1 0 0 0 - 3 1 512 0root_ldisk 0 0 0 - 409 454 1135 43NBS5 0 0 0 - 9 83 9070 1d7 0 122 976 8192 471 20179 43839 90d11 1 144 1149 8192 225 6608 30118 94d8 2 33 261 8192 229 6515 29131 48d12 41 424 3395 8192 666 20632 31722 93d9 0 44 355 8192 577 20848 36999 82d13 2 185 1483 8192 201 6768 34423 93d10 0 13 101 8192 238 6789 29252 36d14 0 583 4667 8192 521 21131 41505 95


Managing

Note

Column Definition:Timestamp - Time the poll was taken.dVol - Name of the disk volume.Queue Depth - Queue depth of the disk volume.Read Ops/s - Number of read operations per second.Read KiB/s - Kibibytes read per second.Avg Read Size Bytes - Average size in bytes of read requests per second.Write Ops/s - Number of write operations per second.Write KiB/s - Kibibytes written per second.Avg Write Size Bytes - Average size in bytes for write requests per second.Util % - Disk utilized in percetage.


Managing

Display meta volume or file system statistics

metaVolumes-std reports the Meta Volumes statistics table. The table output can be alteredusing the -sort, -lines, or -order options.

Action

To display the metaVolumes-std statistics group without the summary, use this command syntax:

$ server_stats <movername> -m metaVolumes-std -interval <seconds> -count<count> -terminationsummary {no|yes|only}

where:




Example:

To display the metaVolumes-std statistics group without the summary and with a five second interval, type:

$ server_stats server_2 -m metaVolumes-std -i 5 -c 3 -te no


Managing

Output

server_2 MetaVol Read Read Avg Read Read Write Write Avg WriteWriteTimestamp Requests/s KiB/s Size Ops/s Requests/s KiB/s SizeOps/s

Bytes Bytes02:58:37 SNBS6 0 0 - 0 1 3 3072

1ufs_4 0 0 - 0 160 1285 8209

161ufs_5 0 0 - 0 163 1299 8175

162ufs_3 0 0 - 0 11 2155 200580

11ufs_2 347 2776 8192 347 140 3544 172208

140ufs_0 315 2517 8192 315 148 1427 147916

148ufs_1 654 5229 8192 654 313 5512 148895

313root_fs_3 1 11 8192 1 0 0 -

002:58:40 SNBS5 0 0 - 0 3 37 12743

3SNBS1 0 0 - 0 3 1 512

3ufs_4 0 0 - 0 159 1257 8089

157ufs_5 0 0 - 0 160 1273 8158

159ufs_3 0 0 - 0 2 511 224695

2ufs_2 396 3166 8192 396 195 27326 143200

195ufs_0 431 3446 8192 431 187 29574 162161

187ufs_1 408 3262 8192 408 159 27782 178784

159root_fs_3 1 5 8192 1 0 0 -

002:58:43 SNBS5 0 0 - 0 1 5 5461

1SNBS6 0 0 - 0 1 3 4608

1ufs_4 0 0 - 0 146 1159 8136

145ufs_5 0 0 - 0 148 1183 8174

148ufs_3 0 0 - 0 8 1965 262144

8ufs_2 522 4174 8192 522 219 35546 166238

219ufs_0 492 3933 8192 492 222 33356 153886

222ufs_1 467 3736 8192 467 188 31955 173819

188


Managing

Note

Column Definition:MetaVol - Name of the meta volume associated with the file system.Read Request/s - Number of read requests per second to this volume.Read KiB/s - Kibibytes read per second.Avg Read Size Bytes - Average size for read requests to this volume.Read Ops/s - Number of read operations per second.Write Requests/s - Number of write requests per second.Write KiB/s - Number of kibibytes written per second to this volume.Avg Write Size Bytes - Average size in bytes for write requests.Write Ops/s - Number of write operations per second.


Managing

Display CIFS operations statistics

The cifsOps-std reports the CIFS operations statistics table. The table output can be alteredusing the –sort, -lines, or –order table options.

Action

To display the cifsOps-std statistics group without the summary, use this command syntax:

$ server_stats <movername> -m cifsops-std -interval <seconds> -count <count>-terminationsummary {no|yes|only}

where:




Example:

To display the cifsOps-std statistics group without the summary and with a five second interval, type:

$ server_stats server_2 -m cifsops-std -i 5-c 3 -te no

Output

server_2 SMB Operation Op Min Max AvgTimestamp Calls/s uSec uSec uSec/call02:57:24 SMB1_Close 56 45 552768 25299

SMB1_WriteX 1360 29 1618776 161125SMB1_CreateNTX 46 51 458090 971

02:57:27 SMB1_Close 130 45 568291 16814SMB1_WriteX 1627 29 1618776 182622SMB1_CreateNTX 147 51 458090 276

02:57:30 SMB1_Close 50 45 568291 29992SMB1_WriteX 1615 29 1618776 151924SMB1_CreateNTX 37 51 458090 2850


Managing

Display NFS operations statistics

-nfsOps-std reports the NFS operations statistics table. The table output can be altered using-sort, -lines, or -order table options.

Action

To display the nfsOps-std statistics group, use this command syntax:

$ server_stats <movername> -m nfsops-std -interval <seconds> -count <count>-terminationsummary {yes|no}

where:




Example:

To display the nfsOps-std statistics group without the summary and with a five second interval, type:

$ server_stats server_2 -m nfsops-std -i 5 -c 3 -te no

Output

server_2 NFS Op NFS NFS NFS NFS Op %Timestamp Op Op Op

Calls/s Errors/s uSec/call03:18:21 v3Read 23442 0 63846 50

v3Write 23372 0 99156 5003:18:24 v3Read 23260 0 65756 50

v3Write 23243 0 101135 5003:18:27 v3Read 23385 0 66808 50

v3Write 23323 0 102201 50

Note

Column Definition:Timestamp - Time the poll was taken.NFS Op - Name of the NFS operation.NFS Op Calls/s - Number of calls to this NFS operation per second.NFS Op Errors/s - Number of times the NFS operation failed per second.NFS Op uSec/Call - Average time in microseconds consumed per call.NFS Op % - Percent of total NFS calls attributed to this operation.


Managing

Sort by field name

Action

To display the nfsOps-std statistics group sorted by the average time in microseconds, use this command syntax:

$ server_stats <movername> -m nfsops-std -sort <field_name> avgTime -order{asc|desc} -lines <lines_of_output> -interval <seconds> -count <count> -terminationsummary {no|yes|only}

where:


<field_name> = name of the output field

<lines_of_output> = number of output lines



Example:

To display the nfsOps-std statistics group sorted by the average time in microseconds used for the five second interval,in descending order, and including the three counts of data output, type:

$ server_stats server_2 -m nfsops-std -sort avgTime -order desc -lines 3 -i 5 -c 3-te no

Output

server_2 NFS Op NFS NFS NFS NFS Op %Timestamp Op Op Op

Calls/s Errors/s uSec/call04:09:39 v3Create 1 0 31657550 0

v3Write 610 0 6223366 10004:09:44 v3Write 607 0 6275942 98

v3Create 11 0 3978054 204:09:49 v3Write 574 0 6691264 93

v3Create 42 0 1073819 7

Sort by field name 33

Managing


Managing

4

Troubleshooting

As part of an effort to continuously improve and enhance the performanceand capabilities of its product lines, EMC periodically releases new versionsof its hardware and software. Therefore, some functions described in thisdocument may not be supported by all versions of the software orhardware currently in use. For the most up-to-date information on productfeatures, refer to your product release notes.

If a product does not function properly or does not function as describedin this document, contact your EMC Customer Support Representative.

Problem Resolution Roadmap for Celerra contains additional informationabout using Powerlink and resolving problems.

Topics included are:◆ EMC E-Lab Interoperability Navigator on page 36◆ Error messages on page 36◆ EMC Training and Professional Services on page 36



EMC E-Lab Interoperability Navigator

The EMC E-Lab™ Interoperability Navigator is a searchable, web-based application thatprovides access to EMC interoperability support matrices. It is available athttp://Powerlink.EMC.com. After logging in to Powerlink, go to Support ➤ Interoperabilityand Product Lifecycle Information ➤ E-Lab Interoperability Navigator.

Error messages

All event, alert, and status messages provide detailed information and recommended actionsto help you troubleshoot the situation.

To view message details, use any of these methods:

◆ Unisphere software:

• Right-click an event, alert, or status message and select to view Event Details, AlertDetails, or Status Details.

◆ CLI:

• Type nas_message -info <MessageID>, where <MessageID> is the messageidentification number.

◆ Celerra Network Server Error Messages Guide:

• Use this guide to locate information about messages that are in the earlier-releasemessage format.

◆ Powerlink:

• Use the text from the error message's brief description or the message's ID to searchthe Knowledgebase on Powerlink. After logging in to Powerlink, go to Support ➤Search Support.

EMC Training and Professional Services

EMC Customer Education courses help you learn how EMC storage products work togetherwithin your environment to maximize your entire infrastructure investment. EMC CustomerEducation features online and hands-on training in state-of-the-art labs conveniently locatedthroughout the world. EMC customer training courses are developed and delivered by EMCexperts. Go to EMC Powerlink at http://Powerlink.EMC.com for course and registrationinformation.


Troubleshooting




EMC Professional Services can help you implement your Celerra Network Server efficiently.Consultants evaluate your business, IT processes and technology, and recommend waysthat you can leverage your information for the most benefit. From business plan toimplementation, you get the experience and expertise that you need without straining yourIT staff or hiring and training new personnel. Contact your EMC representative for moreinformation.

EMC Training and Professional Services 37

Troubleshooting


Troubleshooting

Glossary

C

cacheTemporary storage used to retain frequently used data for faster access. For example, a memorycache may be used between a CPU and main memory.

Common Internet File System (CIFS)File-sharing protocol based on the Microsoft Server Message Block (SMB). It allows users toshare file systems over the Internet and intranets.

F

file systemMethod of cataloging and managing the files and directories on a storage system.

K

kibibytesKibibytes comes from kilo binary and stands for 1024 in the ISO International System of Units.Network performance is measured in kibibytes.

M

metavolumeOn a Celerra system, a concatenation of volumes, which can consist of disk, slice, or stripevolumes. Also called a hypervolume or hyper. Every file system must be created on top of aunique metavolume.

See also disk volume, slice volume, stripe volume, and volume.

N

networkCombination of devices, cabling, and software that makes up a communication infrastructure.


network file system (NFS)Network file system (NFS) is a network file system protocol that allows a user on a clientcomputer to access files over a network as easily as if the network devices were attached to itslocal disks.

P

packetIn communications, a fixed block of data transmitted as a single entity. In local area networks(LANs), the terms frame and packet are used synonymously.

See also frame.

portPhysical connection point to a network or a number used at the transport layer to trackhost-to-host virtual circuits.

T

threadSequential flow of control in a computer program. A thread consists of address space, a stack,local variables, and global variables.


Terminology

Index

Bbasic

check 17statistics summary 11volume statistics 11

Ccache statistics summary 11CIFS

statistics 13statistics summary 11

cifsOps-std 11count, for summary statistics 10, 12CPU utilization 11

DDirectory Name Lookup Cache ratio 11diskVolumes-std 11display

basic summary statistics 17cache statistics summary 22CIFS statistics summary 20file system statistics 28NFS statistics summary 21volume statistics 25

DNLC 11

EEMC E-Lab Navigator 36

error messages 36

Ffile system statistic table 28format, for summary statistics 10, 12

Iinterval, for summary statistics 10, 12ISO International System of Units 10

Kkernel buffer cache hit ratio 11kibibytes 10

Mmessages, error 36metavolume or file system statistics 11metavolume/file system statistics (fsvol) 12metaVolumes-std 11

NnetDevices-std 11network device statistics 11, 12NFS

statistic table 32statistics summary 11


nfsOps-std 11

Oopen file cache hit 11

Pperformance statistics

summaries 10tables 11, 23

print format 10, 12pulsehealth check 11

Rrequirements

requirements (continued)system requirements 8

Sbasic

cifs 10

Ttables 10, 11, 12, 28, 32

file system statistics 28NFS statistics 32titles 10, 12

termination summary, for summary statistics 10, 12titles, for summary statistics 10, 12troubleshooting 35


Index

managing celerra statistics

Documents