SG2100 128GB SSD and Swap
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Per @jimp on using the MMC as a swap
“While you could do that with the MMC, I wouldn't. If you have a cheap sacrificial USB thumb drive you could do it to that without worrying about potential harm to the MMC. I don't have the commands handy but you'd format the drive with gpart, add a freebsd-swap partition, then reference that partition in /etc/fstab as the swap parition. Then when you're done, remove the fstab entry, reboot and remove the thumb drive.”I am wondering with my 128GB SSD if I could just creat a swap and use it?
Or should I only use a usb drive to do this?
I am having system crashes with use of my compex card with increased fiber speeds it didn’t do this with DSL.
What would be the best way to attack this?
@jimp do I create the swap on the usb with a system running FreeBSD and or do I create it with pfSense software command line?
Can I please have those commands on how to do this? I like your usb idea. I just want to know what is causing the crash
Ref:
https://www.cyberciti.biz/faq/create-a-freebsd-swap-file/
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The usb storage only lets you mount msdos partitions last time I got a usb drive mounted. If it’s FreeBSD it would mount right? There is non restrictions?
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https://forum.netgate.com/topic/187132/can-users-use-an-external-hdd-for-use-with-boot-environments/
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I show a swap
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Make sure to upvote
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So gpart shows it has a 6GB swap however the fstab file does not list it and swapinfo shows incorrect info?
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@JonathanLee I should be able to just add a mount point for it right?
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Yes you should just be able to add it to the fstab. Like:
[24.03-RELEASE][admin@5100.stevew.lan]/root: cat /etc/fstab # Device Mountpoint FStype Options Dump Pass# /dev/ada0p2 none swap sw 0 0Though you need to use /dev/ada0s3b.
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@stephenw10 thanks after setting this the crash reports should show correct? This is new to me so the swap is essentially extra memory for the kernel? How does this help with getting crash reports? I am excited to test this with the compex card. Do I need to disable this or can I leave it enabled after we are done with it.
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Yes it should store crash reports. The SWAP space still exists and is accessible from the debugger so it is able to store the crash report there. pfSense checks for any reports in the swap at boot and shows an alert if it finds any.
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@stephenw10 is it safe to leave it on? It is on the SSD. I am a bit confused with this as why @jimp recommend using a usb for swap. Is that because that is recommended over using MMC but I have a SSD and that is ok to use? Is it essentially extra memory for only crash reports? Or let’s say I use clamAV and enabled the monster signature file would it overflow into the swap for loading? Kind of like Disk based RAM? It shouldn’t use it all the time right? Again with an SSD that can withstand abuse is it ok? 6GB swap, I only have 4GB memory and I can only access around 3.5 of it.
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Yeah it's safe to leave enabled on an SSD. But, as you say, it should never get used anyway.
We have recommended using a USB drive for SWAP because it's easy to add. In your case it was trivial because the SWAP partition already existed. But on a system with emmc only where there is no SWAP then re-partitioning it to add swap is complex. Easier to reinstall. Or just use a USB drive temporarily.
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@stephenw10
Okay Stephen riddle me this... yesterday I was able to get the swap file to show in the gui under system information by editing the fstab to correct the location of the swap file partition. Today I see my amount of swap is 1024 and "gpart show" says I have 1.06 or "freebsd-swap (1.0G)." What kind of trickery is this! -
This post is deleted! -
Unclear what your question is? You appear to have a 1GB SWAP partition and it's configured correctly if it appears in the gui.
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@stephenw10
Sorry, I was not clear... the gui, system Information says the swap file is 1024mb but the swap file according to gpart is 1.0g. My thinking is these two should match? Am I wrong about that? -
Your in luck that is 1GB
64MB X 2 = 128MB a fourth of a 1GB
128MB X 2 = 512MB or half a 1GB
512 X 2 = 1024MB or Also known as 1GB :)
