Storage warning after update fo 9.2.1.4

[FlyingPersian]

Hi
I updated from 9.2.0 to 9.2.1.4 couple minutes ago and the first thing that happened was that I got an alert that my Volume is used up to 90%, which isn't true. I have about 8TB of storage and around 500-600GB should still be free.. Why am I getting this warning? Is it a bug?

Also why is the size not shown as the total size of 8TB? I have one Volume called "Data", then there are two subdatasets, one for my stuff and one for my jails and then there are a bunch of subdatasets to those two with all my stuff.
Also I don't understand why it says like "size 1,1TB, available 563,8GB, used 572,3GB as an example. Like why does that dataset has so much available and only some of it is used? I never devided the datasets into parts.. I think before the update the size was the total amount of 8TB, the used was what was actually used and the available was the total minus what was used in total, so in my case it should be around 500-600GB.

Kind Regards

 

[jpaetzel]

The output of zfs list and zpool list would be helpful.

 

[D4nthr4x]

Available = total available for use over all datasets, Size = used + available, so basically potential size. So to find out how much you are using add all of the used together, lets call that x. Then do x/(x+available)= percentage used. And from my calculations you are at ~91%

 

[FlyingPersian]

zfs list

Code:

NAME                                      USED  AVAIL  REFER  MOUNTPOINT
Data                                      6.58T  564G  21.2M  /mnt/Data
Data/.system                              4.21M  564G  224K  /mnt/Data/.system
Data/.system/cores                        192K  564G  192K  /mnt/Data/.system/cores
Data/.system/samba4                      3.18M  564G  3.18M  /mnt/Data/.system/samba4
Data/.system/syslog                        639K  564G  639K  /mnt/Data/.system/syslog
Data/xxx                                  6.56T  564G  3.99M  /mnt/Data/xxx
Data/xxx/yyy                              14.9G  564G  14.9G  /mnt/Data/xxx/yyy
Data/xxx/yyy                              7.60M  564G  7.60M  /mnt/Data/xxx/yyy
Data/xxx/yyy                              5.51G  564G  5.51G  /mnt/Data/xxx/yyy
Data/xxx/yyy                              572G  564G  572G  /mnt/Data/xxx/yyy
Data/xxx/yyy                              108G  564G  108G  /mnt/Data/xxx/yyy
Data/xxx/yyy                              4.37T  564G  4.37T  /mnt/Data/xxx/yyy
Data/xxx/yyy                              21.5G  564G  21.5G  /mnt/Data/xxx/yyy
Data/xxx/yyy                              9.89G  564G  9.89G  /mnt/Data/xxx/yyy
Data/xxx/yyy                              1.44T  564G  1.44T  /mnt/Data/xxx/yyy
Data/xxx/yyy                              43.5G  564G  43.5G  /mnt/Data/xxx/yyy
Data/xxx/yyy                              1.04M  564G  1.04M  /mnt/Data/xxx/yyy
Data/myjails                              15.2G  564G  1023K  /mnt/Data/myjails
Data/myjails/.warden-template-pluginjail  1.26G  564G  1.25G  /mnt/Data/myjails/.warden-template-pluginjail
Data/myjails/couchpotato_1                333M  564G  1.57G  /mnt/Data/myjails/couchpotato_1
Data/myjails/headphones_1                  478M  564G  1.71G  /mnt/Data/myjails/headphones_1
Data/myjails/owncloud_1                  3.52G  564G  4.76G  /mnt/Data/myjails/owncloud_1
Data/myjails/plexmediaserver_1            6.09G  564G  7.34G  /mnt/Data/myjails/plexmediaserver_1
Data/myjails/pyload                        917M  564G  2.02G  /mnt/Data/myjails/pyload
Data/myjails/rtorrent                    2.00G  564G  3.12G  /mnt/Data/myjails/rtorrent
Data/myjails/sickbeard_1                  354M  564G  1.59G  /mnt/Data/myjails/sickbeard_1
Data/myjails/transmission_1                309M  564G  1.44G  /mnt/Data/myjails/transmission_1

zpool list

Code:

NAME   SIZE  ALLOC   FREE    CAP  DEDUP  HEALTH  ALTROOT
Data  10.9T  9.88T  1021G    90%  1.00x  ONLINE  /mnt

 

[eraser]

Maybe it is related to this: https://bugs.freenas.org/issues/4419

 

[jpaetzel]

It looks 90% full to me.

We need to do a better job of representing pool space to the GUI.

 

[FlyingPersian]

Hm true, but why didn't I get this before? This came out of nowhere right after the update

 

[warri]

I think 9.2.0 didn't warn you yet when the pool was getting too full, it was introduced at some point with 9.2.1.

The warning makes sense, because ZFS performs a lot worse when the pool is almost full (I think it was when there is only 4% space left - see other threads). Additionally, if the pool is completely full, you cannot delete files any more. So a lot of people regularly complain in the forums who cannot free any space when that happens. There is a workaround using "echo" instead of "rm" to solve this, though.