TrueNAS Core - Connecting to TrueNAS...Make sure the TrueNAS...

[mastropizza]

Hi,
i'm working with the latest version of TrueNAS Core (checked 3 days ago): suddenly i got the following message on web UI
"Connecting to TrueNAS...Make sure the TrueNAS system is powered on and connected to the network".
I've tried many times to reboot: nothing to do
Console does not state any evident errors
My network computers may access both SMB and iSCSI shares on that NAS system...so it seems is a web UI problem only.
Surfing the web i've found out similar problem: i've then tried to execute commands like
service middlewared restart (no output errors)
and
service nginx restart (ngix does not exist in /etc/rc.d or the local startup directories (....), or is not executable)

Any idea?
Thx
Mastropizza

 

[pschatz100]

You need to provide your system specs or else it will be impossible to comment. Take a moment to read the Forum Rules at the top of the page.

 

[mastropizza]

oooppps.....apologies.
I'm working with a quite old HP Micro N36L...i know that i'm out of min req (i'm only sure it has 3GB RAM) but i need of iSCSI service only, nothing more. It worked flawlessly for several weeks.
Thanks for your support

 

[jgreco]

64GB is the general lower limit for iSCSI, though 32GB or even 16GB *might* work for very light duty needs.

Discussed in

The path to success for block storage

It seems like I haven't written a sticky for awhile, but just in the last week I've had to cover this topic several times. ZFS does two different things very well. One is storage of large sequentially-written files, such as archives, logs, or data files, where the file does not have the middle...

www.truenas.com

In general, iSCSI is more stressful on the system than file level sharing protocols like SMB

Discussed in

Some differences between RAIDZ and mirrors, and why we use mirrors for block storage

ZFS is a complicated, powerful system. Unfortunately, it isn't actually magic, and there's a lot of opportunity for disappointment if you don't understand what's going on. RAIDZ (including Z2, Z3) is good for storing large sequential files...

www.truenas.com

out of min req (i'm only sure it has 3GB RAM)

The minimum memory requirement, per the downloads page, is 16GB. 3GB won't work even for basic filesharing operations, you will run out of memory and the middleware/web UI will crash. 8GB might work for very basic light duty NFS or SMB operations, but it is not going to work well for iSCSI.

The N36L can unofficially support 16GB of RAM, so my suggestion is to ditch the iSCSI, switch to SMB, upgrade to 16GB RAM, and move on with your life.

 

[mastropizza]

great jgreco, many thanks for your detailed explanation!
M