I recently upgraded from 6.6.3 to 6.10.3.  I took a flash backup before upgrading with no issues.  After upgrading I tried to take a Flash Backup again.  However, I now get an error "Creation error. Insufficient free disk space available".  I had the same error on another identical server.  Not sure what I did but it is now working on the other server.  There is 3.5 GB free on the 4 GB flash drive.

 

I've attached the syslog but it doesn't seem to be capturing the latest data.  It's showing about 1pm when it's actually 9pm.

 

Let me know if I can provide anything additional

 

Thanks in advance.

 

Gigabyte Technology Co., Ltd. EP45T-USB3P , Version x.x
Award Software International, Inc., Version F1
BIOS dated: Wed 30 Dec 2009 12:00:00 AM MST

Intel® Celeron® CPU E34 @ 2600 MHz

 

t2-syslog-20220920-0305.zip

t2-diagnostics-20220919-2116.zip

Edited September 20, 20223 yr by dschock

2 hours ago, dschock said:

However, I now get an error "Creation error. Insufficient free disk space available".  I had the same error on another identical server.  Not sure what I did but it is now working on the other server.  There is 3.5 GB free on the 4 GB flash drive.

I would guess that the issue is lack of RAM, you only run with 2GB. The OS is installed in RAM, so the 'disk space' would be RAM.

 

The minimum requirement has been 4GB for some time.

https://unraid.net/product#data-storage-and-protection

 

Maybe removing the 'previous' directory on the flashdrive could help ? It's the previous OS version for easy roll back, but you already have a backup of that.

(that is, if 6.6.3 already provided that feature)

1 minute ago, dschock said:

I am using a 4 GB flash with 3.5 GB free.  I would have thought that would be enough.

That is fine for the flash drive, but RAM in the server needs to be at least 4GB (8GB if you have a lot of docker containers, even more for VMs) and you only have 2GB.

Thanks @ChatNoir  I will remove "previous" and try again.  I guess I didn't suspect RAM because the error said "Insufficient free disk space available".  I set up these servers many years ago and haven't kept up with the hardware specs for the new Unraid versions.

Yeah, on unraid the rootfs is a ramdisk that gets allocated half your total ram so it is a "disk" hence the message... but that's held in RAM. Current Unraid would pretty much fill up the 1GB it's got in your case, so no way to hold the 350ish MB of the flash backup as it's being created. 

Thanks all for the feedback.  I'm upgrading to 8-16 GB RAM.  Honestly I though I had more than 2 GB.  Just shows how old these servers are.  😮