Unable to ZFS Dataset

[pralon]

Hi... i have a 2TB storage on my freeNAS-9.2.1.5 and so far i have used 1TB for several ZFS dataset. The problem is after some time, now i m not able to create new dataset. The error said that there is no space left, but i can see that i still have 1TB left.

I can shrink other dataset however, but increasing is not possible with the same error. Any helpful hint why i couldnt create new dataset? thx.

 

[SweetAndLow]

Ummm you can't expand or decrease datasets. What exactly are you trying to do?

 

[pralon]

Ummm you can't expand or decrease datasets. What exactly are you trying to do?

i CAN decrease, but unable to increase.

I am trying to create a new dataset from my storage. Everytime i decrease a dataset, my storage will have more free space, but again i m unable to CREATE new dataset.

 

[SweetAndLow]

Nope it doesn't work like that. Please follow the forum rules and describe your hardware, error message and exactly what you are doing.

 

[danb35]

Ummm you can't expand or decrease datasets. What exactly are you trying to do?

Sure you can, to the extent that the size of a dataset is defined at all--quotas and reservations can be changed at will.

@pralon, in addition to describing your hardware and FreeNAS version, what's the output of 'zfs list'?

 

[cyberjock]

You probably have reservations or refreservations taking up what you think is free space.

 

[pralon]

Sure you can, to the extent that the size of a dataset is defined at all--quotas and reservations can be changed at will.

@pralon, in addition to describing your hardware and FreeNAS version, what's the output of 'zfs list'?

here is the output:
[root@freenas ~]# zfs list
NAME USED AVAIL REFER MOUNTPOINT
storage 737G 1.05T 200K /mnt/storage <-- a lot of free space, but couldnt create new dataset
storage/.system 4.93M 1.05T 168K /mnt/storage/.system
storage/.system/cores 412K 1.05T 412K /mnt/storage/.system/cores
storage/.system/samba4 3.55M 1.05T 3.55M /mnt/storage/.system/samba4
storage/.system/syslog 840K 1.05T 840K /mnt/storage/.system/syslog
storage/Accounting 10G 99.0G 992M /mnt/storage/Accounting
storage/Collector 1.00G 0 1.00G /mnt/storage/Collector
storage/ERPBackUp 287G 12.9G 287G /mnt/storage/ERPBackUp
storage/ERPPatch 200G 144G 55.9G /mnt/storage/ERPPatch
storage/ERPTest 200G 49.3G 151G /mnt/storage/ERPTest
storage/ICT 39.2G 70.8G 39.2G /mnt/storage/ICT

and system info:
System Information
Hostnamefreenas.PRALON Edit
BuildFreeNAS-9.2.1.5-RELEASE-x64 (80c1d35)
PlatformIntel(R) Xeon(R) CPU L5520 @ 2.27GHz
Memory4075MB
System TimeSun Mar 29 19:13:35 WIT 2015
Uptime7:13PM up 272 days, 20:33, 0 users
Load Average0.00, 0.02, 0.02

 

[SweetAndLow]

again what exactly do you mean by expanding a dataset? Are you talking about quotas, adding a vdev or expanding a pool? You should also know that your system doesn't meet the minimum system requirements. You need at least 8GB of memory to have a stable working system.