Forum Discussion

Aspirant

Dec 14, 2020

space is full even though i deleted a complete share

hi i have rn422 nas for 20 users data with 2 3TB hdd in raid 1 mode. i had a problem that 1 of my shares occupied a lot of space (1.8 TB) even though the files in it take just 300 GB (without snapsho...

StephenB

Guru - Experienced User

Dec 22, 2020

rn_enthusiast wrote:

After reboot, please post output of these commands:
btrfs fi sh /data
btrfs fi df /data
btrfs subv list /data
du -hd1 /data
btrfs qgroup show /data (this command should fail, it is just to check quotas are disabled).

This requires you to enable ssh on system->settings. From there you can log in from Windows 10 by entering "ssh root@nas-ip-address" in the windows search box (using the real NAS IP address of course). Enter the NAS admin password when prompted.

If you are a Mac owner you can also enter that command from terminal.

tcbrssa

Aspirant

Dec 23, 2020

StephenB rn_enthusiast

thanks for the help!

i did the last update (6.10.4) and magically the capacity got normal! very thanks!

do you think still do delete the qouta or this isn't needed now?

https://postimg.cc/0KypjmwG

https://postimg.cc/8jF6YTBC

rn_enthusiast
Virtuoso
Dec 23, 2020
Good to hear. It was definitely an issue with quotas going wack for whatever reason.
Quotas are handy but they can be problematic at times, such as in your case.

You can keep them enabled if you so wish. I have them disabled on my system as I know they can be messy at times. The ReadyNAS uses BTRFS version 4.16 which is from 2 years ago (https://btrfs.wiki.kernel.org/index.php/Changelog). At least 10 BTRFS versions has come out since then but even in newer versions many admins would recommend not using them. They are just problematic in general and they have a tendency to spike CPU very high at times when handling snapshots creation/deletion and stuff.

Given that the NAS uses an older version of BTRFS (hopefully will be updated soon!) I don't go near them, but it is your own choice.
https://btrfs.wiki.kernel.org/index.php/Quota_support (Look at the "Known Issues" section). You VERY likely ran into
"Bugs in accounting code might cause false out of space situations"

Cheers
tcbrssa
Aspirant
Dec 23, 2020
i will disable them, it's dont a 'must' for me. thanks!