Useful Commands

[Bidule0hm]

I just wanted to share my list of useful commands with everyone ;)

Please note that you're the only one responsible of what you do in the CLI so don't blame me if you mess your system.

Feel free to suggest me some commands (by private message to avoid cluttering the thread) ;)

Also I want to say thanks to BigDave for providing some of the commands :)



ZFS

Code:

zpool status -v #shows zpool status infos

zpool iostat 1 #shows IOps and R/W bandwidth every second

zfs list -t snapshot #lists all the snapshots, add | grep "" to filter

arc_summary.py #shows ARC stats

arcstat.py #shows ARC stats

zdb -C your_pool_name | grep ashift #shows the ashift value

SMART

Code:

smartctl -h #shows smart control help, lots of commands examples

smartctl -a /dev/daX #shows all smart attributes

smartctl -A /dev/daX #same as -a but without vendor infos, last test infos, ...

smartctl -l selftest /dev/daX #shows result of last smart test

smartctl -l scttemp /dev/daX #shows the temperatures history

smartctl -t long /dev/daX #executes a long test (replace "long" by "short" for a short test)

HDD

Code:

glabel status  #shows gptids and devices names

gstat -f daX -I 1000ms #shows IOps and R/W bandwidth every second

iostat daX #shows IOps and R/W bandwidth

HBA

Code:

dmesg | grep mps #used to check FW and driver versions on HBA cards using the mps driver

UPS

Code:

upsc ups #shows all ups attributes (change "ups" with your ups name)

Misc

Code:

kldload ipmi.ko #loads ipmitool
ipmitool sensor #shows all ipmi sensors values

systat -vm #shows system infos (cpu load, ram usage, drives I/O, ...)

dmidecode | more #shows all hardware bios infos

cat /var/log/messages | more #shows the log (same as in the GUI footer)

freenas-debug -h more /var/tmp/fndebug #shows all debug infos

camcontrol devlist #shows all devices

usbconfig #shows all usb devices

Burn-in/Benchmark

Code:

dd if=/dev/zero of=/mnt/tank/tmp.zero bs=2048k count=50k #disable shares and compression for the test!!!
dd if=/mnt/tank/tmp.zero of=/dev/null bs=2048k count=50k #disable shares and compression for the test!!! don't forget to delete tmp.zero after

diskinfo -t daX #test seek and transfer times

for i in 1 2 3 4; do while : ; do : ; done & done #cpu burn test for 4 threads

 

[DrKK]

Very useful sir. I recommend the mods @jkh @cyberjock etc move it to some permanent/sticky status and/or location.

 

[Bidule0hm]

Many thanks ;)

 

[TinTIn]

Very helpful, thankyou


Sent from my iPhone using Tapatalk

 

[Ericloewe]

Code:

smartctl -A /dev/adaX

Useful if you only want to check the SMART attributes, without drive information, SMART test log and other less-interesting info.

 

[Snow]

Are the Parameters for Freebsd - mv - Move commands all the same for FreeNas as they are for Freebsd?

 

[droeders]

Are the Parameters for Freebsd - mv - Move commands all the same for FreeNas as they are for Freebsd?

Yes

 

[Snow]

Thanks

 

[socra]

I just wanted to share my list of useful commands with everyone ;)

Please note that you're the only one responsible of what you do in the CLI so don't blame me if you mess your system.

Feel free to suggest me some commands (by private message to avoid cluttering the thread) ;)

Also I want to say thanks to BigDave for providing some of the commands :)



ZFS

Code:

zdb -C your_pool_name | grep ashift #shows the ashift value

Should this code not be changed to

zdb -U /data/zfs/zpool.cache | grep ashift ?

 

[Grunt 031]

Thank this great.