vfs.dev.read[/dev/sda,bytes, ] not support on centos 6.5

[pswen]

vfs.dev.read[/dev/sda,bytes, ]

zabbix 2.2.3 , this item not support on centos 6.5 ?

[ingus.vilnis]

Hello!

Try this item with the extra space removed in the third parameter.

vfs.dev.read[/dev/sda,bytes,]

Best Regards,
Ingus

[aib]

I have the same problem, sorry.

[root@zabbix ~]# cat /etc/system-release
CentOS release 6.5 (Final)
[root@zabbix ~]# df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/vg_zabbix2-lv_root
                      114G   22G   87G  21% /
tmpfs                 1.5G     0  1.5G   0% /dev/shm
[B]/dev/sda1             485M  140M  320M  31% /boot[/B]
/dev/mapper/vg_zabbix2-LogVol02
                      1.4T  1.4G  1.3T   1% /home
/dev/mapper/vg_zabbix2-LogVol03
                      917G  2.8G  868G   1% /usr
tmpfs                 100M   76K  100M   1% /tmp
[root@zabbix ~]# zabbix_get -s localhost -k vfs.dev.read[/dev/sda1,bytes,]
[B]ZBX_NOTSUPPORTED[/B]
[root@zabbix ~]#

[ingus.vilnis]

Interesting.

I looked up documentation https://www.zabbix.com/documentation...s/zabbix_agent for key vfs.dev.write and read that it is OS dependent.

Then I tested it on my Ubuntu 12.04 and got not supported as well.

ingus@ingus:~$ zabbix_get -s localhost -k vfs.dev.read[/dev/sda1,bytes]
ZBX_NOTSUPPORTED
ingus@ingus:~$ zabbix_get -s localhost -k vfs.dev.read[/dev/sda1,operations]
64091

So can you get a correct result using different type parameters?

Best Regards,
Ingus

[aib]

Ok, there are CentOS 6.5

[root@zabbix ~]# zabbix_get -s localhost -k vfs.dev.write[/dev/sda1,bytes,]
ZBX_NOTSUPPORTED
[root@zabbix ~]# zabbix_get -s localhost -k vfs.dev.write[/dev/sda1,operations]
128

PS Your link is not going to Documentation. It's a link to my other topic (Windows agent - memory leaking)

[ingus.vilnis]

Aleksey, thank you for noticing the wrong link! Corrected now.

So is operations the solution?

Best Regards,
Ingus

[aib]

It looks like that.
Only one way to get any information about disk activity is to use operations type of parameter.

I wish I know how to convert "operations" to "bytes" or "bytes per second"

[jan.garaj]

Use item:

vfs.dev.read[/dev/sda1,sectors]

And then create calculated item, which calculated bytes:

vfs.dev.read[/dev/sda1,sectors]*<sector_size>

<sector_size> is usually 512 (logical sector size), but check fdisk:

fdisk -l /dev/sda1

[ahowell]

Just use vfs.dev.read[/dev/sda1,sectors] and use a custom multiplier of 512

[ZabbixFun]

Or use:

UserParameter=custom.vfs.dev.read.sectors[*],cat /proc/diskstats | grep $1 | head -1 | awk '{print $$6}'
UserParameter=custom.vfs.dev.write.sectors[*],cat /proc/diskstats | grep $1 | head -1 | awk '{print $$10}'