How to free drive space

[omfk]

Hi all,

I'm using a FreeNAS system for the whole purpose of acting as a Veeam repository. The FreeNAS repository is connected via iSCSi to the Veeam server. This system worked flawlessly for the last 2 years. During a recent creation of a full backup it seems that the FreeNAS was running out space.

FreeNAS reported > 96% utilization, whereas the server acting as Veeamserver reported nearly 2.5TB of space left.
In the mean time I even deleted another 2.5TB file, so that Windows reports 5TB free but FreeNAS still reports a full drive.

How can I really free some space?

BR
Frank

 

[Chris Moore]

The FreeNAS repository is connected via iSCSi to the Veeam server.

With iSCSI, block storage, you are not supposed to use more than 50% of the pool capacity because, when you do, the performance suffers greatly.

FreeNAS reported > 96% utilization

Once an iSCSI extent consumes space, it is difficult to get that space back.
You should start reading with this resource:
https://www.ixsystems.com/community...quires-more-resources-for-the-same-result.41/
and continue to read other forum posts about iSCSI because you could have saved yourself some pain now by doing this research first.

 

[omfk]

Once an iSCSI extent consumes space, it is difficult to get that space back.

Difficult but not impossible?

I'll definitely read the referenced post and will take the information into account for the next installation.

BR
Frank

 

[Dan Tudora]

Difficult but not impossible?

I'll definitely read the referenced post and will take the information into account for the next installation.

BR
Frank

if the drive is NTFS run a chkdsk /f at drive and verify recycle bin
in other situation I resolve problem with space on a iSCSI "map" with https://docs.microsoft.com/en-us/sysinternals/downloads/sdelete
after run this sysinternals utility I recover the space missing

 

[omfk]

C:\Users\Administrator>chkdsk S: /f
Der Typ des Dateisystems ist NTFS.
Die Volumebezeichnung lautet FreeNASiSCSI.

CHKDSK überprüft Dateien (Phase 1 von 3)...
2304 Datensätze verarbeitet.
Dateiüberprüfung beendet.
77 große Datensätze verarbeitet.
0 ungültige Datensätze verarbeitet.
0 E/A-Datensätze verarbeitet.
0 Analysedatensätze verarbeitet.
CHKDSK überprüft Indizes (Phase 2 von 3)...
2340 Indexeinträge verarbeitet.
Indexüberprüfung beendet.
0 nicht indizierte Dateien überprüft.
0 nicht indizierte Dateien wiederhergestellt.
CHKDSK überprüft Sicherheitsbeschreibungen (Phase 3 von 3)...
2304 SDs/SIDs verarbeitet.
Überprüfung der Sicherheitsbeschreibungen beendet.
18 Datendateien verarbeitet.
Das Dateisystem wurde überprüft. Es wurden keine Probleme festgestellt.

10485629 MB Speicherplatz auf dem Datenträger insgesamt.
4823976 MB in 42 Dateien
16 KB in 20 Indizes
0 KB in fehlerhaften Sektoren
402848 KB vom System benutzt
65536 KB von der Protokolldatei belegt
5661260 MB auf dem Datenträger verfügbar.

4096 Bytes in jeder Zuordnungseinheit
2684321279 Zuordnungseinheiten auf dem Datenträger insgesamt
1449282634 Zuordnungseinheiten auf dem Datenträger verfügbar

I can see hidden Recycle bin directories. When I try to delete them, Windows asks if I'm really sure. There is nothing inside.

The FreeNAS GUI however still shows only 3GiB free.

 

[omfk]

In the mean time I worked with sdelete as mentioned above.

The warnings from FreeNAS are gone but...

[root@srvhh19 ~]# zfs list
NAME USED AVAIL REFER MOUNTPOINT
Veeam 10.2T 50.0G 128K /mnt/Veeam
Veeam/.system 127M 50.0G 140K legacy
Veeam/.system/configs-fe5739137b3643d3a6327c8c1d9b1a34 85.0M 50.0G 85.0M legacy
Veeam/.system/cores 1006K 50.0G 1006K legacy
Veeam/.system/rrd-fe5739137b3643d3a6327c8c1d9b1a34 23.8M 50.0G 23.8M legacy
Veeam/.system/samba4 291K 50.0G 291K legacy
Veeam/.system/syslog-fe5739137b3643d3a6327c8c1d9b1a34 16.4M 50.0G 16.4M legacy
Veeam/.system/webui 128K 50.0G 128K legacy
Veeam/VeeamSC 10.2T 7.51T 2.69T -
freenas-boot 2.01G 11.8G 64K none
freenas-boot/ROOT 2.00G 11.8G 29K none
freenas-boot/ROOT/11.2-U4.1 2.00G 11.8G 760M /
freenas-boot/ROOT/9.10.2-U2 180K 11.8G 637M /
freenas-boot/ROOT/9.10.2-U6 132K 11.8G 638M /
freenas-boot/ROOT/Initial-Install 1K 11.8G 636M legacy
freenas-boot/ROOT/Wizard-2017-03-29_16-40-22 1K 11.8G 637M /
freenas-boot/ROOT/default 173K 11.8G 637M legacy
freenas-boot/grub 6.35M 11.8G 6.35M legacy

Why are the values of available space differ for Veeam (only 50G) and VeeamSC (7.5T)?

BR
Frank

 

[pro lamer]

Why are the values of available space differ for Veeam (only 50G) and VeeamSC (7.5T)

Is VeeamSC the zvol?

Sent from my phone

 

[rvassar]

Do you have any snapshots?

 

[omfk]

I have to admit, that I'm not familiar with the naming scheme. If I select VeeamSC in the storage section of the FreeNAS GUI I see the below Icons with edit/destroy zvol. So I assume that VeeamSC is a zvol.

There are no snapshots, at least I can't see any in that section of the GUI.

BR
Frank