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    SG2100 128GB SSD and Swap

    Scheduled Pinned Locked Moved General pfSense Questions
    swapcrashing
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    • 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.

      Make sure to upvote

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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.

          Make sure to upvote

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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

            Make sure to upvote

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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.

              T 2 Replies Last reply Reply Quote 1
              • 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.

                          1 Reply Last reply Reply Quote 1
                          • stephenw10S
                            stephenw10 Netgate Administrator
                            last edited by

                            Your rep is over 5 now you should be good.

                            T 1 Reply Last reply Reply Quote 0
                            • JonathanLeeJ JonathanLee referenced this topic on
                            • T
                              The Party of Hell No @stephenw10
                              last edited by

                              @stephenw10 Thank you.

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                              • JonathanLeeJ
                                JonathanLee
                                last edited by

                                Quick Question @stephenw10 @jimp

                                I am testing SWAP on a USB drive and I used gpart to create a swap partition on the drive, I have it referenced and it is working...

                                Screenshot 2024-05-09 at 15.35.46.png

                                But it doesn't show usage here...
                                Screenshot 2024-05-09 at 15.36.07.png

                                But it does here

                                Screenshot 2024-05-09 at 15.37.07.png

                                This all seemed to math up with the SSD use

                                Screenshot 2024-05-09 at 15.37.46.png

                                Geom name: ada0
                                modified: false
                                state: OK
                                fwheads: 16
                                fwsectors: 63
                                last: 250069679
                                first: 1
                                entries: 4
                                scheme: MBR
                                Providers:
                                1. Name: ada0s1
                                   Mediasize: 272629760 (260M)
                                   Sectorsize: 512
                                   Stripesize: 0
                                   Stripeoffset: 512
                                   Mode: r0w0e0
                                   efimedia: HD(1,MBR,00000000,0x1,0x82000)
                                   rawtype: 239
                                   length: 272629760
                                   offset: 512
                                   type: efi
                                   index: 1
                                   end: 532480
                                   start: 1
                                2. Name: ada0s2
                                   Mediasize: 67108864 (64M)
                                   Sectorsize: 512
                                   Stripesize: 0
                                   Stripeoffset: 272630272
                                   Mode: r0w0e0
                                   efimedia: HD(2,MBR,00000000,0x82001,0x20000)
                                   rawtype: 11
                                   length: 67108864
                                   offset: 272630272
                                   type: fat32
                                   index: 2
                                   end: 663552
                                   start: 532481
                                3. Name: ada0s3
                                   Mediasize: 127695937024 (119G)
                                   Sectorsize: 512
                                   Stripesize: 0
                                   Stripeoffset: 339739136
                                   Mode: r1w1e2
                                   efimedia: HD(3,MBR,00000000,0xa2001,0xedda2af)
                                   attrib: active
                                   rawtype: 165
                                   length: 127695937024
                                   offset: 339739136
                                   type: freebsd
                                   index: 3
                                   end: 250069679
                                   start: 663553
                                Consumers:
                                1. Name: ada0
                                   Mediasize: 128035676160 (119G)
                                   Sectorsize: 512
                                   Mode: r1w1e3
                                
                                Geom name: ada0s3
                                modified: false
                                state: OK
                                fwheads: 16
                                fwsectors: 63
                                last: 249406126
                                first: 0
                                entries: 8
                                scheme: BSD
                                Providers:
                                1. Name: ada0s3a
                                   Mediasize: 120590425600 (112G)
                                   Sectorsize: 512
                                   Stripesize: 0
                                   Stripeoffset: 339747328
                                   Mode: r1w1e1
                                   rawtype: 27
                                   length: 120590425600
                                   offset: 8192
                                   type: freebsd-zfs
                                   index: 1
                                   end: 235528190
                                   start: 16
                                2. Name: ada0s3b
                                   Mediasize: 7105150976 (6.6G)
                                   Sectorsize: 512
                                   Stripesize: 0
                                   Stripeoffset: 120930172928
                                   Mode: r0w0e0
                                   rawtype: 1
                                   length: 7105150976
                                   offset: 120590433792
                                   type: freebsd-swap
                                   index: 2
                                   end: 249405438
                                   start: 235528191
                                Consumers:
                                1. Name: ada0s3
                                   Mediasize: 127695937024 (119G)
                                   Sectorsize: 512
                                   Stripesize: 0
                                   Stripeoffset: 339739136
                                   Mode: r1w1e2
                                

                                Just to confirm this is correct right I can hear the drive running seeking etc

                                I checked the ada0 made sure it would work unplugged it to make use it was the right drive name also

                                Make sure to upvote

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                                • JonathanLeeJ
                                  JonathanLee
                                  last edited by

                                  Screenshot 2024-05-09 at 15.40.28.png

                                  Disregard I spoke to soon...

                                  Make sure to upvote

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                                  • JonathanLeeJ
                                    JonathanLee
                                    last edited by JonathanLee

                                    @stephenw10 said in SG2100 128GB SSD and Swap:

                                    /dev/ada0s3b

                                    With use of the drive "da0" in place of "/dev/ada0s3b how can I still use the SWAP and have coredumps generate?

                                    How can I still use the external drive for swap and access core dumps in /var/crashes?

                                    Make sure to upvote

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                                    • JonathanLeeJ
                                      JonathanLee
                                      last edited by

                                      I need to use

                                      /dev/ada0s3b for dump

                                      and
                                      /dev/da0 for swapping

                                      can I separate them?

                                      Make sure to upvote

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                                      • stephenw10S
                                        stephenw10 Netgate Administrator
                                        last edited by

                                        Not easily. Not as far as I know at least.

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