Errno 28 after upgrade freenas 9.10

[abadanvolek]

I upgraded my freenas from 9.21 to 9.10 and when the zpool was imported it reports error:

[Errno 28] No space left on device: '/var/db/system/cores'

[root@freenas] ~# df -h
Filesystem Size Used Avail Capacity Mounted on
freenas-boot/ROOT/default 7.7G 594M 7.1G 8% /
devfs 1.0K 1.0K 0B 100% /dev
tmpfs 32M 8.1M 24M 25% /etc
tmpfs 4.0M 8.0K 4.0M 0% /mnt
tmpfs 2.7G 82M 2.6G 3% /var
freenas-boot/grub 7.1G 6.3M 7.1G 0% /boot/grub
fdescfs 1.0K 1.0K 0B 100% /dev/fd
linprocfs 4.0K 4.0K 0B 100% /compat/linux/proc
freenas_vol1 128K 128K 0B 100% /mnt/freenas_vol1
freenas_vol1/.system 144K 144K 0B 100% /var/db/system
freenas_vol1/.system/cores 584K 584K 0B 100% /var/db/system/cores
freenas_vol1/.system/samba4 196K 196K 0B 100% /var/db/system/samba4

[root@freenas] ~# zfs list
NAME USED AVAIL REFER MOUNTPOINT
freenas-boot 604M 7.10G 31K none
freenas-boot/ROOT 597M 7.10G 25K none
freenas-boot/ROOT/Initial-Install 1K 7.10G 594M legacy
freenas-boot/ROOT/default 597M 7.10G 594M legacy
freenas-boot/grub 6.33M 7.10G 6.33M legacy
freenas_vol1 3.56T 0 128K /mnt/freenas_vol1
freenas_vol1/.system 1.72M 0 144K legacy
freenas_vol1/.system/cores 584K 0 584K legacy
freenas_vol1/.system/rrd-be4fe75a1a20491bb9c8a8ad950f3be0 144K 0 144K legacy
freenas_vol1/.system/samba4 196K 0 196K legacy
freenas_vol1/.system/syslog-be4fe75a1a20491bb9c8a8ad950f3be0 692K 0 692K legacy
freenas_vol1/NAS_VOL1 3.56T 3.15T 420G -

 

[dlavigne]

Please paste the output of zpool status using Insert -> Code.

 

[abadanvolek]

I cannot login to GUI. I only have ssh connection. zpool status shows no error.

 

[dlavigne]

If zpool status is happy, your volume is fine. Looks like Volume Manager is confused by migrating from such an earlier version. Changing the location of the system dataset in System -> System Dataset would might unconfuse it.