Some interesting cmd of netapp

Some interesting cmd of netapp.

mkfile : this cmd is used to make the file on netapp, we can create file on any volume of netapp by this cmd .

the below is the example of this cmd.

vipul1*> mkfile 10kb  /vol/vipul/vipultree/uk

vipul1*> ls /vol/vipul/vipultree

uk

coverletter.txt

Data Migration Clariion to VNX using SAN Copy.pdf

Data Migration Clariion to VNX using SAN Copy1.pdf

Data Migration Clariion to VNX using SAN Copy2.pdf

rdfile : rdfile cmd is used to read the content of the file , so by this cmd we can see the content of any file in any volume.

For example:

vipul1*> rdfile /etc/uk

Vipul

dd: this cmd is used to copy the content of file data from on file to another, this cmd can be used in case of your ndmpcopy is not working.

For example:

vipul1*> dd if=/vol/vol0/etc/uk of=/vol/vol0/etc/vk

vipul1*> rdfile /etc/vk

Vipul

ls: this cmd is used to list the content of the directory .

for example.

vipul1*> ls /vol/vipul/vipultree

uk

coverletter.txt

Data Migration Clariion to VNX using SAN Copy.pdf

Data Migration Clariion to VNX using SAN Copy1.pdf

Data Migration Clariion to VNX using SAN Copy2.pdf

mv: this cmd is used to replace the old file to the new file this work in same volume but not between different volume

for example.

vipul1*> mv /vol/vol0/etc/vk /vol/vol0/etc/uk

vm_stat: gives the output of the wafl space allocation, gives stats of the wafl

for example.

vipul1*> vm_stat

System

        Total Pages in System: 130816

        Total Pages Allocated: 130567

        Total Free Pages: 249

        Non-WAFL Free Pages: 0

        WAFL Free Pages: 249

WAFL

        Pages From WAFL: 8867

        Pages Returned To WAFL: 2668

        Failures while stealing from WAFL: 0

        Times Pages stolen immediately: 8867

        Free Pages in WAFL: 7427

 Free buffers in WAFL: 74278

        WAFL recycled bufs: 3661

Sleep/Wakes

        Times thread slept for pages: 60

        Times woken up for pages: 60

        Times PTE is alloced while sleeping: 0

Hseg

             <8k   <16k   <64k  <512k   <2MB   <8MB  <16MB    big chunks        bytes

alloc          0    237    167    107      2      0      0      1    514     43069440

active         0      3      0      0      0      0      1      0      4      9359360

backup         0      0      0      0      0      0      0      0      0            0

Buffers MemoryPool

      1 portmap

      1 portmap

rm: this cmd is used to delete a file from the qtree.

For example.

vipul1*> ls /vol/vipul/vipultree

uk

coverletter.txt

vipul1*> rm /vol/vipul/vipultree/uk

vipul1*> ls /vol/vipul/vipultree

coverletter.txt

filersio: this cmd is used for the testing purpose , you can run this cmd and test your filer performance and to see if there is any issue.

For example.

vipul1*> filersio asyncio_active 50 -r 50 4 0 10m 60 5 /vol/vol0/filersio.test -                                                                                        create -print_stats 5

filersio: workload initiated asynchronously. Results will be displayed on the

console after completion

vipul1*> filersio: starting workload asyncio_active, instance 0

Read I/Os       Avg. read       Max. read       Write I/Os      Avg. write     M                                                                                        ax write

                latency(ms)     latency(ms)                     latency(ms)    l                                                                                        atency(ms)

16898           0               149             16926           1              8                                                                                        21

8610            0               22              8571            3              2                                                                                        641

5910            0               966             5715            5              2                                                                                        760

11449           0               17              11431           2              2                                                                                        500

11368           0               65              11426           2              2                                                                                        321

Wed Apr 11 18:00:00 IST [kern.uptime.filer:info]:   6:00pm up  2:41 0 NFS ops, 0                                                                                         CIFS ops, 0 HTTP ops, 0 FCP ops, 98 iSCSI ops

14116           0               18              13952           1              1                                                                                        151

8363            0               11              8580            2              2                                                                                        699

18068           0               31              17934           1              2                                                                                        780

10279           0               24              10292           2              1                                                                                        180

5690            0               15              5653            1              1                                                                                        399

Statistics for active_active model, instance 0

Running for 61s

Total read latency(ms)  31531

Read I/Os               113608

Avg. read IOPS          1862

Avg. read latency(ms)   0

Max read latency(ms)    966

Total write latency(ms) 275993

Write I/Os              113392

Avg. write IOPS         1858

Avg. write latency(ms)  2

Max write latency(ms)   3450

filersio: instance 0: workload completed successfully

hammer: this cmd again is good cmd for thesting the performance of your filer but it utilize the cpu power so much. It actually hammer the filer and record its performance. This cmd should be run under some netapp expert, don’t run it simply , because this is dangerous cmd and can create any panic to your filer.

For ecample;

vipul1*> hammer

usage: hammer [abort|pause|restart|status|

       [-f]<# Runs><fileName><# BlocksInFile> (<# Runs> == -1 runs hammer forever)|

       fill <writeSize> (use all available disk space)]

vipul1*> hammer -f 5 /vol/vol0/hammer.txt 400

vipul1*> Wed Apr 11 18:08:18 IST [blacksmith:warning]: blacksmith #0: Starting work.

Wed Apr 11 18:08:25 IST [blacksmith:info]: blacksmith #0: No errors detected. Stopping work

getXXbyYY: this cmd is very useful cmd to find out the information of user, host etc.. this cmd is used to take out the information from the filer , just look its sub cmd and then you will come to know that how useful this cmd is.

vipul1*> getXXbyYY help

usage: getXXbyYY <sub-command> <name>

Where sub-command is one of

gethostbyname_r - Resolves host name to IP address from configured DNS server, same as nslookup
gethostbyaddr_r - Retrieves IP address for host name from configured DNS server, same as reverse lookup
netgrp - Checks group membership for given host from LDAP/Files/NIS
getspwbyname_r - Displays user information using shadow file
getpwbyname_r - Displays user information including encrypted password from LDAP/Files/NIS
getpwbyuid_r - Same as above however you provide uid in this command rather than user name
getgrbyname - Displays group name and gid from LDAP/Files/NIS
getgrbygid - Same as above however you provide gid in this command rather than group name
getgrlist - Shows given user's gid from LDAP/Files/NIS

For more information, try 'man na_getXXbyYY'

vipul1*> getXXbyYY gethostbyname_r root

host entry for root not found: Host not found (authoritative)

vipul1*> getXXbyYY gethostbyname_r vipul

name: vipul

aliases:

IPv4 addresses: 192.168.1.14

All the above cmd  will only run either in diag mode or in advanced mode but will not run in normal mode.

Hope this blog will help you to play with some of the netapp hidden cmd.