If I plan to run FreeNAS off a USB stick, what actually get written to the USB? I presume it is not stateless and I am guessing your configuration data (IP, LUN, drive info) get written to the USB. Does it also used the USB for temp/scratch disk also? Or can that be redirect ?
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What get written to the USB drive
- Thread starter dwchan69
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It's almost stateless. The OS is loaded into RAM, with all logs in RAM. The USB stick itself is read-only, with one exception. /data which is where your config file goes is not read-only. The FreeNAS devs aren't a bunch of noobs that would do stupid things like putting logs on the USB stick and such.
Thanks, I do have couple more quick questions.
1. If it is relatively stateless, where does swap goes? Assuming you do not have enough memory. For the system I am building, it has 32G of memory, and based on "top", I am seeing 30GB so far.
2. What is the best way to upgrade/patch FreeNAS on a usb? Do you do just burn a new USB stick and copy /data contents onto its?
Thanks
Nindustries
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1. ZFS will try to use ALL of your memory (which is good). Swap is spread across the pool, but not sure..
2. Best practice is to use a second usb drive I think so you always have a backup of your old config.
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2. Best practice is to use a second usb drive I think so you always have a backup of your old config.
- Sent from mobile.
You mean having a second USB readily available? What about the data on the 1st USB. Can I just copy and paste the /data folder between USB or between version during upgrade?
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