omvzsfs plugin zfs set spamming

chrisq · 12. Januar 2020

I'm on omv 4.1.31-1. I installed proxmox kernel and zfs, created a zpool manually (for more control over how the raidz2 was created) and it showed up in the openzfs plugin in omv so I haven't touched anything in the plugin itself other than to note that my zpool was there (and the underlying datasets) and have been using it with a few bumps (bad cable causing udma cmc error that is now fixed). When I look at zpool history there's constant spamming in there with zfs set commands, I assume from the plugin and I'm curious how to get this to stop.

An example of the spam, this is just the latest it happens every minute or two:

Code

2020-01-12.09:09:06 zfs set omvzfsplugin:uuid=8fd025c3-c908-4b89-b37f-acae0444081a zdata
2020-01-12.09:09:10 zfs set omvzfsplugin:uuid=068d155c-3d32-4992-9c5d-57567b1b6a48 zdata/archive
2020-01-12.09:09:15 zfs set omvzfsplugin:uuid=467afe74-5169-4eea-90c3-6ca0bf9f5392 zdata/backupdockerconf
2020-01-12.09:09:19 zfs set omvzfsplugin:uuid=8eb92b9a-9a28-453f-aff0-e14a0c9a724e zdata/dockerconf
2020-01-12.09:09:23 zfs set omvzfsplugin:uuid=980d894d-4bc1-44ae-b04d-ba8d2db43ebf zdata/dockerpath
2020-01-12.09:09:27 zfs set omvzfsplugin:uuid=fcda2be3-a3fa-415a-9ddb-37c94865c315 zdata/downloads
2020-01-12.09:09:31 zfs set omvzfsplugin:uuid=26275790-9085-457a-a971-77995f59291a zdata/incomplete
2020-01-12.09:09:35 zfs set omvzfsplugin:uuid=1e9c735e-9520-4fe7-bcde-f3074e2b939b zdata/mayan
2020-01-12.09:09:40 zfs set omvzfsplugin:uuid=cda757e9-0dd6-4500-b05e-2e90f061309d zdata/mayanbackup
2020-01-12.09:09:44 zfs set omvzfsplugin:uuid=4d1dc217-0e99-4170-a937-86939c954f07 zdata/mayanwatch
2020-01-12.09:09:48 zfs set omvzfsplugin:uuid=1c5d2959-dcfe-470e-807a-c7c36f9c4914 zdata/omvbackup
2020-01-12.09:09:52 zfs set omvzfsplugin:uuid=48d8e290-4eaa-47a2-a8e5-57913fa73982 zdata/test
2020-01-12.09:09:57 zfs set omvzfsplugin:uuid=0bba8625-6b20-441a-b029-951f5731e5ac zdata/urbackup
2020-01-12.09:10:21 zfs set omvzfsplugin:uuid=8fd025c3-c908-4b89-b37f-acae0444081a zdata
2020-01-12.09:10:25 zfs set omvzfsplugin:uuid=068d155c-3d32-4992-9c5d-57567b1b6a48 zdata/archive
2020-01-12.09:10:30 zfs set omvzfsplugin:uuid=467afe74-5169-4eea-90c3-6ca0bf9f5392 zdata/backupdockerconf
2020-01-12.09:10:34 zfs set omvzfsplugin:uuid=8eb92b9a-9a28-453f-aff0-e14a0c9a724e zdata/dockerconf
2020-01-12.09:10:38 zfs set omvzfsplugin:uuid=980d894d-4bc1-44ae-b04d-ba8d2db43ebf zdata/dockerpath
2020-01-12.09:10:42 zfs set omvzfsplugin:uuid=fcda2be3-a3fa-415a-9ddb-37c94865c315 zdata/downloads
2020-01-12.09:10:47 zfs set omvzfsplugin:uuid=26275790-9085-457a-a971-77995f59291a zdata/incomplete
2020-01-12.09:10:51 zfs set omvzfsplugin:uuid=1e9c735e-9520-4fe7-bcde-f3074e2b939b zdata/mayan
2020-01-12.09:10:55 zfs set omvzfsplugin:uuid=cda757e9-0dd6-4500-b05e-2e90f061309d zdata/mayanbackup
2020-01-12.09:10:59 zfs set omvzfsplugin:uuid=4d1dc217-0e99-4170-a937-86939c954f07 zdata/mayanwatch
2020-01-12.09:11:03 zfs set omvzfsplugin:uuid=1c5d2959-dcfe-470e-807a-c7c36f9c4914 zdata/omvbackup
2020-01-12.09:11:08 zfs set omvzfsplugin:uuid=48d8e290-4eaa-47a2-a8e5-57913fa73982 zdata/test
2020-01-12.09:11:12 zfs set omvzfsplugin:uuid=0bba8625-6b20-441a-b029-951f5731e5ac zdata/urbackup

Alles anzeigen

Also, it set off a zfs scrub last night, where do I configure when that should happen, as I don't see anything in the scheduled jobs plugin or in the zfs plugin for that and would like to make sure it doesn't happen again until I'm done moving all my data to the drive.

crashtest · 12. Januar 2020

There's one automated scrub per month, that's set as part of the plugin install.

I looked at my own zfs history and noted the uuid entries as well. (recent history attached) Some are less than a minute apart, some are days apart. This could be triggered by something like a write to the pool. Do you have something automated, that's writing to the pool on a regular basis?

Unless you're having problems, I wouldn't worry about it.

zfs.txt

chrisq · 13. Januar 2020

I'm currently copying all my data from elsewhere to this zfs pool into a few of the datasets. Do you know where I can change the scrub settings? I don't see anything in crontab on omv or in my root crontab.

crashtest · 13. Januar 2020

Look at this location/file:
/etc/cron.d/zfsutils-linux

It's set for the second Sunday of the month.
I left the default scrub in place and set a zpool status command in Scheduled Tasks, for the day after the scrub, to get the scrub results E-mailed to me.
_____________________________________________
Some useful CLI commands: (Where the name of the pool is ZFS1)

zpool scrub ZFS1
zpool scrub -s ZFS1 #stop a scrub#
zpool status -v ZFS1
_____________________________________________

BTW: To get a close approximation of posix permissions/acl's, extra attributes etc., you might want to run the following commands on your pool before you copy data onto it. The compression line is optional but it might save you some space. (Where the name of the pool is ZFS1)

zfs set aclinherit=passthrough ZFS1
zfs set acltype=posixacl ZFS1
zfs set xattr=sa ZFS1
zfs set compression=lz4 ZFS1
____________________________________________

Once you're set up, you might be interested in automated snapshots. If so, this may be interesting to you -> autosnap.

chrisq · 13. Januar 2020

Thanks, I did those already, lz4 saved a ton of space on config dirs. They are all very good advice

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