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ZFS not freeing up space after file deletion
Posted: 07 Jan 2017 10:22
by jmpapi
Hello,
I have a big ZFS raidz2 storage where I deleted some big files in order to free up space. I deleted the files from a Windows PC via SMB.
But free space is not growing.
Snapshots are disabled and there are no hidden snapshots.
Code: Select all
zfs list -o space
NAME AVAIL USED USEDSNAP USEDDS USEDREFRESERV USEDCHILD
Internal 787G 112G 0 107G 0 5.69G
Internal/Internal 787G 144K 0 144K 0 0
Internal/www 787G 5.65G 0 5.65G 0 0
StorageZ2Pool 0 20.0T 0 358K 0 20.0T
StorageZ2Pool/Backup 0 2.14T 0 2.14T 0 0
StorageZ2Pool/MediaZ2 0 17.9T 0 17.9T 0 0
Code: Select all
zfs list -t snapshot
no datasets available
I also deleted some files over terminal, but it's the same.
And I can't find any hidden trash folders.
THe NAS4Free system information page shows this:
Code: Select all
StorageZ2Pool
97% of 29TB
Total: 29T | Alloc: 28.2T | Free: 849G | State: ONLINE
Any ideas?
Thank you very much
Regards
Re: ZFS not freeing up space after file deletion
Posted: 07 Jan 2017 12:06
by mooblie
Has your SMB Share been setup with a Recycle Bin? If so, that's maybe the cause. You need to periodically manually empty it (with File Manager or Command line?) and/or just turn the Recycle Bin off?
Re: ZFS not freeing up space after file deletion
Posted: 07 Jan 2017 13:01
by slaycock
THe NAS4Free system information page shows this:
CODE: SELECT ALL
StorageZ2Pool
97% of 29TB
Total: 29T | Alloc: 28.2T | Free: 849G | State: ONLINE
Your pool seems pretty full so you might be at the stage where deleting a file normally won't work. ZFS can't delete a file if the free space on a pool is smaller than the size of the file you are trying to delete. (See if you can figure out why yourself
).
Have you tried deleting files form the console?
Re: ZFS not freeing up space after file deletion
Posted: 07 Jan 2017 17:31
by jmpapi
@mooblie:
recycle bin is already off for all the SMB shares.
Here my settings:
smb.png
Re: ZFS not freeing up space after file deletion
Posted: 07 Jan 2017 17:33
by jmpapi
@slaycock
really?!
Yes I already tried. Files are deleted, but sill no free space.
Re: ZFS not freeing up space after file deletion
Posted: 07 Jan 2017 19:32
by slaycock
Try exporting and then reimporting the zpool.
Re: ZFS not freeing up space after file deletion
Posted: 08 Jan 2017 01:23
by jmpapi
@slaycock:
tried it, but no luck
Re: ZFS not freeing up space after file deletion
Posted: 08 Jan 2017 19:26
by jmpapi
I don't get any error when deleting from the console. It deletes, but no free space. Files are really visually gone.
Re: ZFS not freeing up space after file deletion
Posted: 08 Jan 2017 20:09
by ChriZathens
Delete your snapshots.
Edit: Just noticed that you said there aren't any..
So scratch that...
Re: ZFS not freeing up space after file deletion
Posted: 08 Jan 2017 20:46
by jmpapi
I just now moved +-240Gb of data to my PC.
And I deleted 2 small Datasets on that pool.
Now I have this:
FreeSpace.png
Name Size Alloc Free Expandsz Frag Dedup Health Mount Point AltRoot
StorageZ2Pool 29T 27.5T (94%) 1.53T - 4% 1.00x ONLINE /mnt/StorageZ2Pool -
The Nas4Free configpage gives me 1,53T free.
What I don't understand. Shouldn't I have more than just 18,4 TB with 9*4 TB disks as RaidZ2 as the configpage shows aswell?
What could that be?
Thanks
Regards