EMC Celerra Network Server

Transcription

1 EMC Celerra Network Server Release 6.0 Managing Celerra Statistics P/N REV A01 EMC Corporation Corporate Headquarters: Hopkinton, MA

2 Copyright EMC Corporation. All rights reserved. Published September 2010 EMC believes the information in this publication is accurate as of its publication date. The information is subject to change without notice. THE INFORMATION IN THIS PUBLICATION IS PROVIDED "AS IS." EMC CORPORATION MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WITH RESPECT TO THE INFORMATION IN THIS PUBLICATION, AND SPECIFICALLY DISCLAIMS IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Use, copying, and distribution of any EMC software described in this publication requires an applicable software license. For the most up-to-date regulatory document for your product line, go to the Technical Documentation and Advisories section on EMC Powerlink. For the most up-to-date listing of EMC product names, see EMC Corporation Trademarks on EMC.com. All other trademarks used herein are the property of their respective owners. Corporate Headquarters: Hopkinton, MA Managing Celerra Statistics 6.0

3 Contents Preface...5 Chapter 1: Introduction...7 System requirements...8 User interface choices...8 Related Information...8 Chapter 2: Concepts...9 Performance statistics summaries...10 Performance statistics tables...11 Chapter 3: Managing...15 Display performance statistics summaries...16 Display a summary of system statistics...17 Display a summary of CIFS protocol statistics...20 Display a summary for NFS protocol statistics...21 Display a summary statistics for caches...22 Display performance statistics tables...23 Display network device statistics...24 Display basic volume statistics...25 Display meta volume or file system statistics...28 Display CIFS operations statistics...31 Display NFS operations statistics...32 Sort by field name...33 Chapter 4: Troubleshooting...35 EMC E-Lab Interoperability Navigator...36 Managing Celerra Statistics 6.0 3

4 Contents Error messages...36 EMC Training and Professional Services...36 Glossary...39 Index Managing Celerra Statistics 6.0

5 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 described in 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, please contact your EMC representative. Managing Celerra Statistics 6.0 5

6 Preface 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 system or 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 a particular 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 for information about EMC products, licensing, and service, go to the EMC Powerlink website (registration required) at Troubleshooting Go to Powerlink, search for Celerra Tools, and select Celerra Troubleshooting 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 open a service request through Powerlink, you must have a valid support agreement. Contact your EMC Customer Support Representative for details about obtaining a valid support agreement or to answer any questions about your account. Note: Do not request a specific support representative unless one has already been assigned to your particular system problem. Your comments Your suggestions will help us continue to improve the accuracy, organization, and overall quality of the user publications. Please send your opinion of this document to: techpubcomments@emc.com 6 Managing Celerra Statistics 6.0

7 1 Introduction This document provides an overview of the performance statistics facility used to monitor system statistics for the EMC Celerra Network Server. Monitoring performance, protocol, and system statistics is essential to ensure the optimum performance of the Celerra Network Server. Use the performance statistics facility to gather and display statistical information in an easy-to-use format that can be customized for your needs. Statistics can be viewed as a summary or as a detailed table that can be customized. Chapter 2 provides more details about Celerra performance statistics and features. This document is part of the Celerra Network Server documentation set and is intended for system administrators and support engineers familiar with the command line interface. These procedures presume a basic knowledge of the Celerra Network Server. Topics included are: System requirements on page 8 User interface choices on page 8 Related Information on page 8 Managing Celerra Statistics 6.0 7

8 Introduction System requirements Table 1 on page 8 describes the EMC Celerra Network Server software, hardware, network, and storage configurations. Table 1. System requirements Software Hardware Network Storage Celerra Network Server version 6.0 or later No specific hardware requirements No specific network requirements No specific storage requirements User interface choices This document describes how to configure performance statistics by using the command line interface (CLI). You cannot use other Celerra management applications to configure performance statistics. Related Information Specific information related to the features and functionality described in this document are included in: Celerra Network Server Command Reference Manual Celerra Network Server Parameters Guide Online Celerra man pages 8 Managing Celerra Statistics 6.0

9 2 Concepts The performance statistics facility gathers and displays statistical information in an easy-to-use format that can be customized. This information can be used to diagnose performance issues affecting the Celerra 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 none of the values have changed from the previous sample) are not displayed in a sample output. However, the summary termination of a table will display all rows, including idle ones. Topics included are: Performance statistics summaries on page 10 Performance statistics tables on page 11 Managing Celerra Statistics 6.0 9

10 Concepts Performance statistics summaries Summary statistics provide an overview of high-level system statistics. The four choices for a 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 each display is 15 seconds. The interval can be changed by using the -interval option. The number of 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 International System of Units. Using the -monitor options in the server_stats command The -monitor option takes a comma-separated list of statpath and statgroup names. In cases where stats are available for multiple elements, the user can specify an element name or use 'ALL-ELEMENTS' to refer to all elements at once. Any duplicate statpath or statgroup names is consolidated and reported once. The options below are only applicable 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 types of Statistics Groups: System-defined and User-defined groups. System-defined statistics groups are created as part of the installation (or upgrade) process. It creates a statistics group and specifies what statpath names it includes. It also allows the nesting of statgroups by adding existing statgroups to new statgroups. Statgroup names can be 10 Managing Celerra Statistics 6.0

11 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 network kibibytes sent, received, read, and written. The basic option provides a simple pulse or health check of the system. CIFS statistics The cifs option displays a summary of the CIFS protocol statistics, including read and write operations and active connections. NFS statistics The nfs option displays a summary of the NFS protocol statistics, including read and write operations and active threads. Cache statistics The caches option displays a summary of statistics that are affecting cache, such as the Directory Name Lookup Cache (DNLC) ratio, the open file cache hit, and the kernel buffer cache hit ratio. Performance statistics tables When using the -table option, statistics are displayed in table format either by default mode or in a modifiable display. Multiple tables can be displayed by specifying table collections in 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-defined statistics groups that can be used as arguments with the new -monitor option: System-defined statistics group name basic-std caches-std server_stats collection name -summary basic -summary caches Performance statistics tables 11

12 Concepts System-defined statistics group name cifs-std nfs-std cifsops-std diskvolumes-std metavolumes-std netdevices-std nfsops-std server_stats collection name -summary cifs -summary nfs -table cifs -table dvol -table fsvol -table net -table nfs Each table collection displays statistics relative to the network, volume, or operation as specified. 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 is 15 seconds by default, but can be changed by using the -interval option. The number of polls can 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, the network kibibytes and packets sent and received per second, and the input and output errors encountered. Basic volume statistics (diskvolumes-std) The basic volume statistics reported for each interval are the name and queue depth of the disk volume, the number of kibibytes read and sent per second, and the number and size 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 associated metavolume, and the number, average size, and percentage of total metavolume read and write requests. 12 Managing Celerra Statistics 6.0

13 Concepts CIFS statistics (cifsops-std) The CIFS statistics reported for each interval are the name of the CIFS operation, the number of calls to this operation, the percent total, and the average time in microseconds consumed by the call. NFS statistics (nfsops-std) The NFS statistics reported for each interval are the name of the NFS operation, the number of calls to this operation, the percent total, and the average time in microseconds consumed by the call. Performance statistics tables 13

14 Concepts 14 Managing Celerra Statistics 6.0

15 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 Managing Celerra Statistics

16 Managing 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 Managing Celerra Statistics 6.0

17 Managing Display a summary of system statistics A basic health check displays CPU utilization, the number of network kibibytes sent and received, 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 dvol Timestamp Util In Out Read Write % KiB/s KiB/s KiB/s KiB/s 02:53: :53: :53: :53: :53: server_2 CPU Network Network dvol dvol Summary Util In Out Read Write % KiB/s KiB/s KiB/s KiB/s Minimum Average Maximum 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 interfaces. dvol Write Kib/s - Storage kibibytes sent to all server-storage interfaces. Display performance statistics summaries 17

18 Managing 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 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 dvol Timestamp Util In KiB Out KiB Read KiB Write % diff diff diff KiB diff 02:53: :53: :53: :53: :53: server_2 CPU Network Network dvol dvol Summary Util In KiB Out KiB Read KiB Write % diff diff diff KiB diff Minimum Average Maximum 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 interfaces per differential value. Network Out KiB diff - Network kibibytes sent over all network interfaces per differential value. dvol Read KiB diff - Storage kibibytes received from all server-storage interfaces per differential value. dvol Write KiB diff - Storage kibibytes sent to all server-storage interfaces per differential value. Action To display the basic-std group, use this command syntax: 18 Managing Celerra Statistics 6.0

19 Managing Action $ 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 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 dvol Timestamp Util In Out Read Write % KiB KiB KiB KiB 02:53: :53: :53: :53: :53: server_2 CPU Network Network dvol dvol Summary Util In Out Read Write % KiB KiB KiB KiB Minimum Average Maximum 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 interfaces per accumulated value. Network Out KiB - Network kibibytes sent over all network interfaces per accumulated value. dvol Read KiB - Storage kibibytes received from all server-storage interfaces per accumulated value. dvol Write KiB - Storage kibibytes sent to all server-storage interfaces per accumulated value. Display performance statistics summaries 19

20 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: <movername> = name of the Data Mover <seconds> = number of seconds in each interval <count> = number of reports 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 CIFS Avg Avg Timestamp Total Read Read Read Write Write Write Connections Open Size Size Files Ops/s Ops/s KiB/s Bytes Ops/s KiB/s Bytes 09:57: :57: :57: :57: :57: Note Column definitions: Timestamp Time the poll was taken CIFS Total Ops/s Total number of operations CIFS Read Ops/s CIFS read operations per second in the interval CIFS Read KiB/s CIFS read data response in kibibytes per second CIFS Avg Size Read Bytes Average read data response during the sample CIFS Write Ops/s CIFS write operations per second CIFS Write KiB/s CIFS write data response in kibibytes per second CIFS Avg Write Size Bytes Average write data size during the sample CIFS connections Number of CIFS protocol connections at the time of the sample CIFS Open Files Number of open CIFS files at the time of the sample 20 Managing Celerra Statistics 6.0

21 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: <movername> = name of the Data Mover <seconds> = number of seconds in each interval <count> = number of reports 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 NFS Timestamp NFS Read Read Read Size Write Write Write Size Active Ops/s Ops/s KiB/s Bytes Ops/s KiB/s Bytes Threads 02:55: :55: :55: :55: :55: server_2 Total NFS NFS NFS Avg NFS NFS NFS Avg NFS Summary NFS Read Read Read Size Write Write Write Size Active Ops/s Ops/s KiB/s Bytes Ops/s KiB/s Bytes Threads Minimum Average Maximum 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. Display performance statistics summaries 21

22 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: <movername> = name of the Data Mover <seconds> = number of seconds in each interval <count> = number of reports 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 Buffer Timestamp Hit Hit Cache Ratio % Ratio % Hit % 02:55: :55: :55: :55: :55: server_2 DNLC OF Cache Buffer Summary Hit Hit Cache Ratio % Ratio % Hit % Minimum Average Maximum 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. 22 Managing Celerra Statistics 6.0

23 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

24 Managing Display network device statistics The netdevices-std reports the Network devices statistics table. The table output can be altered 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: <movername> = name of the Data Mover <seconds> = number of seconds for each interval <count> = number of reports 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 Network Timestamp In In In Out Out Out Pkts/s Errors/s KiB/s Pkts/s Errors/s KiB/s 02:55:52 mge mge cge cge cge :55:55 mge mge cge cge cge :55:58 mge mge cge cge cge Managing Celerra Statistics 6.0

25 Managing Output server_2 device Network Network Network Network Network Network Summary In In In Out Out Out Pkts/s Errors/s KiB/s Pkts/s Errors/s KiB/s Minimum mge mge cge cge cge cge Average mge mge cge cge cge cge Maximum mge mge cge cge cge cge 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: <movername> = name of the Data Mover <seconds> = number of seconds for each interval <count> = number of reports Display performance statistics tables 25

26 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/s 02:58:09 NBS root_ldisk d d d d d d d d :58:12 root_ldisk NBS d d d d 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/s d d d d :58:15 NBS root_ldisk NBS d d d d d d d d Managing Celerra Statistics 6.0

27 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. Display performance statistics tables 27

28 Managing Display meta volume or file system statistics metavolumes-std reports the Meta Volumes statistics table. The table output can be altered using 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: <movername> = name of the Data Mover <seconds> = number of seconds for each interval <count> = number of reports 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 28 Managing Celerra Statistics 6.0

29 Managing Output server_2 MetaVol Read Read Avg Read Read Write Write Avg Write Write Timestamp Requests/s KiB/s Size Ops/s Requests/s KiB/s Size Ops/s Bytes Bytes 02:58:37 SNBS ufs_ ufs_ ufs_ ufs_ ufs_ ufs_ root_fs_ :58:40 SNBS SNBS ufs_ ufs_ ufs_ ufs_ ufs_ ufs_ root_fs_ :58:43 SNBS SNBS ufs_ ufs_ ufs_ ufs_ ufs_ ufs_ Display performance statistics tables 29

30 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. 30 Managing Celerra Statistics 6.0

31 Managing Display CIFS operations statistics The cifsops-std reports the CIFS operations statistics table. The table output can be altered using 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: <movername> = name of the Data Mover <seconds> = number of seconds for each interval <count> = number of reports 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 Avg Timestamp Calls/s usec usec usec/call 02:57:24 SMB1_Close SMB1_WriteX SMB1_CreateNTX :57:27 SMB1_Close SMB1_WriteX SMB1_CreateNTX :57:30 SMB1_Close SMB1_WriteX SMB1_CreateNTX Display performance statistics tables 31

32 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: <movername> = name of the Data Mover <seconds> = number of seconds for each interval <count> = number of reports 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/call 03:18:21 v3read v3write :18:24 v3read v3write :18:27 v3read v3write 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. 32 Managing Celerra Statistics 6.0

33 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> -termi nationsummary {no yes only} where: <movername> = name of the Data Mover <field_name> = name of the output field <lines_of_output> = number of output lines <seconds> = number of seconds for each interval <count> = number of reports 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/call 04:09:39 v3create v3write :09:44 v3write v3create :09:49 v3write v3create Sort by field name 33

34 Managing 34 Managing Celerra Statistics 6.0

35 4 Troubleshooting As part of an effort to continuously improve and enhance the performance and capabilities of its product lines, EMC periodically releases new versions of its hardware and software. Therefore, some functions described in 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, contact your EMC Customer Support Representative. Problem Resolution Roadmap for Celerra contains additional information about 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 Managing Celerra Statistics

36 Troubleshooting EMC E-Lab Interoperability Navigator The EMC E-Lab Interoperability Navigator is a searchable, web-based application that provides access to EMC interoperability support matrices. It is available at After logging in to Powerlink, go to Support Interoperability and Product Lifecycle Information E-Lab Interoperability Navigator. Error messages All event, alert, and status messages provide detailed information and recommended actions to 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, Alert Details, or Status Details. CLI: Type nas_message -info <MessageID>, where <MessageID> is the message identification number. Celerra Network Server Error Messages Guide: Use this guide to locate information about messages that are in the earlier-release message format. Powerlink: Use the text from the error message's brief description or the message's ID to search the 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 together within your environment to maximize your entire infrastructure investment. EMC Customer Education features online and hands-on training in state-of-the-art labs conveniently located throughout the world. EMC customer training courses are developed and delivered by EMC experts. Go to EMC Powerlink at for course and registration information. 36 Managing Celerra Statistics 6.0

37 Troubleshooting EMC Professional Services can help you implement your Celerra Network Server efficiently. Consultants evaluate your business, IT processes and technology, and recommend ways that you can leverage your information for the most benefit. From business plan to implementation, you get the experience and expertise that you need without straining your IT staff or hiring and training new personnel. Contact your EMC representative for more information. EMC Training and Professional Services 37

38 Troubleshooting 38 Managing Celerra Statistics 6.0

39 Glossary C cache Temporary storage used to retain frequently used data for faster access. For example, a memory cache 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 to share file systems over the Internet and intranets. F file system Method of cataloging and managing the files and directories on a storage system. K kibibytes Kibibytes comes from kilo binary and stands for 1024 in the ISO International System of Units. Network performance is measured in kibibytes. M metavolume On a Celerra system, a concatenation of volumes, which can consist of disk, slice, or stripe volumes. Also called a hypervolume or hyper. Every file system must be created on top of a unique metavolume. See also disk volume, slice volume, stripe volume, and volume. N network Combination of devices, cabling, and software that makes up a communication infrastructure. Managing Celerra Statistics

40 Terminology network file system (NFS) Network file system (NFS) is a network file system protocol that allows a user on a client computer to access files over a network as easily as if the network devices were attached to its local disks. P packet In 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. port Physical connection point to a network or a number used at the transport layer to track host-to-host virtual circuits. T thread Sequential flow of control in a computer program. A thread consists of address space, a stack, local variables, and global variables. 40 Managing Celerra Statistics 6.0

41 Index B basic check 17 statistics summary 11 volume statistics 11 C cache statistics summary 11 CIFS statistics 13 statistics summary 11 cifsops-std 11 count, for summary statistics 10, 12 CPU utilization 11 D Directory Name Lookup Cache ratio 11 diskvolumes-std 11 display basic summary statistics 17 cache statistics summary 22 CIFS statistics summary 20 file system statistics 28 NFS statistics summary 21 volume statistics 25 DNLC 11 E EMC E-Lab Navigator 36 error messages 36 F file system statistic table 28 format, for summary statistics 10, 12 I interval, for summary statistics 10, 12 ISO International System of Units 10 K kernel buffer cache hit ratio 11 kibibytes 10 M messages, error 36 metavolume or file system statistics 11 metavolume/file system statistics (fsvol) 12 metavolumes-std 11 N netdevices-std 11 network device statistics 11, 12 NFS statistic table 32 statistics summary 11 Managing Celerra Statistics

42 Index nfsops-std 11 O open file cache hit 11 P performance statistics summaries 10 tables 11, 23 print format 10, 12 pulsehealth check 11 R requirements requirements (continued) system requirements 8 S T basic cifs 10 tables 10, 11, 12, 28, 32 file system statistics 28 NFS statistics 32 titles 10, 12 termination summary, for summary statistics 10, 12 titles, for summary statistics 10, 12 troubleshooting Managing Celerra Statistics 6.0