Problems with disks

[ikon_pl]

Hello,
Recently i have problems with my disks. 2x 4TB Ironwolfs (red nas). What can i do to delete errors in Truenas. There were 2 errors before, now i see 8 errors on disk.

 

[artlessknave]

errors mean your disks are returning bad data.
you can clear it with zpool clear tank , but you need to keep an eye on it.

 

[ikon_pl]

errors mean your disks are returning bad data.
you can clear it with zpool clear tank , but you need to keep an eye on it.

But still i have unhealthy topology and zfs healthy pool is not healthy

And i have critical alert.

 

[artlessknave]

again, your disks are returning bad data. you can either put up with the bad data being returned or replace the disks.
zpool clear will only clear the zfs count of the errors.
zpool status -v will show any damaged files. you have to work out what to do with any damaged files.
as you have a mirror zfs will attempt to repair damage but it can only do so much. if the disk returns enough bad data zfs will fail it out of the pool.
your topology isnt unhealthy; mirrors are perfectly fine, but something in your pool isn't healthy.

 

[ikon_pl]

again, your disks are returning bad data. you can either put up with the bad data being returned or replace the disks.
zpool clear will only clear the zfs count of the errors.
zpool status -v will show any damaged files. you have to work out what to do with any damaged files.
as you have a mirror zfs will attempt to repair damage but it can only do so much. if the disk returns enough bad data zfs will fail it out of the pool.
your topology isnt unhealthy; mirrors are perfectly fine, but something in your pool isn't healthy.

How can i repair this?

 

[artlessknave]

i missed it before but I see that you had 8 errors on each vdev in the mirror. that means dataloss, as zfs does not have an uncorrupted copy to work with. you will have to delete or replace the files. they have been permanently damaged.
as the corrupted files are in your .system and applications dataset, though. hmm. im not sure how best to replace those. should be able to just delete the syslog ones but the catalogs and docker would affect applications - are you using applications?

 

[ikon_pl]

przegapiłem to wcześniej ale widzę, że miałeś 8 błędów na każdym vdev w lustrze. Oznacza to utratę danych, ponieważ ZFS nie ma nieuszkodzonej kopii, z którą mógłby pracować. Będziesz musiał usunąć lub zastąpić pliki. zostały trwale uszkodzone.
ponieważ uszkodzone pliki znajdują się w zestawie danych .system i aplikacji. hmm. Nie jestem pewien, jak najlepiej je wymienić. Powinien być w stanie po prostu usunąć te z dziennika systemowego, ale katalogi i docker wpłynęłyby na aplikacje - czy używasz aplikacji?

Yes, i'm using nextcloud.

 

[ChrisRJ]

You should really check your system. If something like that has happened, there is a serious problem. The typical culprits are

• power supply
• disks
• SATA cables

If you don't change anything, there is a big risk that you will face problems (perhaps bigger) again.

Also, please provide hardware information as detailed as asked for in the forum rules.

 

[ikon_pl]

You should really check your system. If something like that has happened, there is a serious problem. The typical culprits are

• power supply
• disks
• SATA cables

If you don't change anything, there is a big risk that you will face problems (perhaps bigger) again.

Also, please provide hardware information as detailed as asked for in the forum rules.

How I can check that power suply or disks or SATA cables can do errors.

 

[ikon_pl]

I'm turn on my nas now, use nextcloud on phone and see 54 errors on truenas (with one disk this errors). So i restart truenas and now this one disk is degraded, what does it mean?What i must do?

And after one more restart