Does not alert on cksum errors

[killmasta93]

Hi, on zabbix it does not alert if the pool has an error on the cksum

root@prometheus26:~# zpool status pool: rpool state: ONLINE status: One or more devices has experienced an unrecoverable error. An attempt was made to correct the error. Applications are unaffected. action: Determine if the device needs to be replaced, and clear the errors using 'zpool clear' or replace the device with 'zpool replace'. see: http://zfsonlinux.org/msg/ZFS-8000-9P scan: none requested config:

NAME        STATE     READ WRITE CKSUM
rpool       ONLINE       0     0     0
  mirror-0  ONLINE       0     0     0
    sda3    ONLINE       0     0     0
    sdb3    ONLINE       0     0     0
  mirror-1  ONLINE       0     0     0
    sdc     ONLINE       0     0     0
    sdd     ONLINE       0     0    33

[AceSlash]

You are right, this is not currently supported, usually you will be alerted by other metrics outside of ZFS for disk errors.

Nevertheless, this could be a good improvement.

[killmasta93]

Thanks for the reply, is there going to be planned to update this? Thank you

[AceSlash]

@killmasta93 : I cannot give you a specific date. Currently the template doesn't handle the discovery of the vdevs, I took a quick look and I didn't see any other way than the parsing of the output of "zpool status" to get the list of the vdevs, which is not that easy and seems a little brittle.

I'll get back to you when I have some time to look further.

[AceSlash]

I have started the implementation. I got the list of all vdev with their state and read, write and checksum error counters.

For the alerting, I think that I'll raise an alert when any counter is > 0, but only once. I don't think there is any value to raising 2 or 3 alerts if a vdev has more than 1 counter > 0.

For example in your case, it will raise an alert saying "vdev /dev/sdd has 33 errors". If you got 5 write errors and 33 checksum error, it will instead say "vdev /dev/sdd has 38 errors". I want to avoid 2 alerts for the same vdev like "vdev /dev/sdd has 33 checksum errors" and "vdev /dev/sdd has 5 write errors".

[killmasta93]

Thanks for the reply, should i update the script? to see on the alert? as i still have not clear the cksum error on my pool

[AceSlash]

@killmasta93 : not yet, I'm still testing it and it's not public yet. It should be done by the end of week if everything goes well. I'll tell you when it's done.

[killmasta93]

thank you again, if i can help in anyway let me know :)

[AceSlash]

@killmasta93 testing is done and the new userparameters and template have been deployed on my infrastructure. I actually found out that I had an error on one disk with it!

It was a good idea ;-)

[killmasta93]

Thank you so much, im glad it helped the idea, quick question for updating do i need to download the template.xml and replace it?

[killmasta93]

edit: just updated it and got the alert thank very much

[AceSlash]

you're welcome