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    SG2100 128GB SSD and Swap

    Scheduled Pinned Locked Moved General pfSense Questions
    swapcrashing
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    • JonathanLeeJ
      JonathanLee
      last edited by

      Screenshot 2024-05-06 at 23.52.33.png

      I show a swap

      Make sure to upvote

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      • JonathanLeeJ
        JonathanLee
        last edited by

        Screenshot 2024-05-07 at 00.03.24.png

        Make sure to upvote

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        • JonathanLeeJ
          JonathanLee
          last edited by

          Screenshot 2024-05-07 at 00.04.40.png

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          • JonathanLeeJ
            JonathanLee
            last edited by

            Screenshot 2024-05-07 at 00.07.20.png

            Make sure to upvote

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            • JonathanLeeJ
              JonathanLee
              last edited by

              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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              • JonathanLeeJ
                JonathanLee @JonathanLee
                last edited by

                @JonathanLee I should be able to just add a mount point for it right?

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                • stephenw10S
                  stephenw10 Netgate Administrator
                  last edited by

                  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	0
                  

                  Though you need to use /dev/ada0s3b.

                  JonathanLeeJ 1 Reply Last reply Reply Quote 1
                  • JonathanLeeJ
                    JonathanLee @stephenw10
                    last edited by

                    @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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                    • stephenw10S
                      stephenw10 Netgate Administrator
                      last edited by

                      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.

                      JonathanLeeJ 1 Reply Last reply Reply Quote 1
                      • JonathanLeeJ
                        JonathanLee @stephenw10
                        last edited by JonathanLee

                        @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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                        • JonathanLeeJ
                          JonathanLee
                          last edited by

                          @stephenw10 @jimp

                          It is on the SSD working :)

                          Thanks,

                          Screenshot 2024-05-07 at 07.47.35.png

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                          • stephenw10S
                            stephenw10 Netgate Administrator
                            last edited by

                            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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                            • T
                              The Party of Hell No @stephenw10
                              last edited by

                              @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!

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                              • T
                                The Party of Hell No @stephenw10
                                last edited by

                                This post is deleted!
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                                • stephenw10S
                                  stephenw10 Netgate Administrator
                                  last edited by

                                  Unclear what your question is? You appear to have a 1GB SWAP partition and it's configured correctly if it appears in the gui.

                                  T 1 Reply Last reply Reply Quote 0
                                  • T
                                    The Party of Hell No @stephenw10
                                    last edited by

                                    @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?

                                    JonathanLeeJ 1 Reply Last reply Reply Quote 1
                                    • JonathanLeeJ
                                      JonathanLee @The Party of Hell No
                                      last edited by

                                      @The-Party-of-Hell-No

                                      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 :)

                                      Make sure to upvote

                                      T 1 Reply Last reply Reply Quote 1
                                      • T
                                        The Party of Hell No @JonathanLee
                                        last edited by The Party of Hell No

                                        @JonathanLee said in SG2100 128GB SSD and Swap:

                                        @The-Party-of-Hell-No

                                        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 :)

                                        Ahh shit, I sound like a bumpkin... never mind.
                                        Hey could someone upvote me so I am not stopped from submitting posts because I have to wait 140 seconds as a new user.

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                                        • stephenw10S
                                          stephenw10 Netgate Administrator
                                          last edited by

                                          Your rep is over 5 now you should be good.

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                                          • JonathanLeeJ JonathanLee referenced this topic on
                                          • T
                                            The Party of Hell No @stephenw10
                                            last edited by

                                            @stephenw10 Thank you.

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