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#xen IRC Logs for 2022-02-08

---Logopened Tue Feb 08 00:00:04 2022
00:32-!-jgross_ is now known as jgross
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04:23-!-Knorrie is "Hans van Kranenburg" on #mch2022-logistics #debian-xen #xen
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06:50<astevanato>Hi all, I'm trying to study the behaviour of xen, how PV network works and stuff like that. I would like to collect info of the path that the packets follow from the guest to dom0. A sort of debug. I inserted the loglvl=all and guest_loglvl=all. Is that the correct way? Since the /var/log/xen is mostly empty. There are some tools/utility that I can exploit? Do you have any resource(s) to suggest?
06:55<andyhhp>depends what you're trying to look for
06:56<andyhhp>Xen isn't involved (really)
06:56<andyhhp>it's domU kernel (netfront) talking to dom0 kernel (netback)
06:56<andyhhp>this communication is facilitated by Xen's grant table (shared memory) and evtchn (interrupts) interfaces
06:57<andyhhp>but they're probably too low-level primitiives to be worth looking at
06:57<astevanato>Actually I don't know. I just want to collect something like info/debug information
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06:58<astevanato>damnt connection
06:59<andyhhp>you didn't miss anything
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06:59<astevanato>I was saying that I don't actually know what I'm looking at. Just general debug information that help me understand how things works. What happen from the pv driver on the guest till to the pv driver on the dom0
06:59<andyhhp>but yeah - you don't want to go debug logging any of this
07:00<andyhhp>there's far too much data
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07:00<astevanato>xen should also act in between?
07:00<andyhhp>tbh, you're better off looking up various XenSummit presentations from the past
07:00<andyhhp>which have explainations how how this all works
07:01<astevanato>I've read https://wiki.xenproject.org/wiki/Xen_Networking but I think I need more details
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11:49-!-ChmEarl is "Mark Pryor" on #xen ##xen-packaging #mock #packaging #virt
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15:49-!-murb is "William Boughton (0xC0FBCCA4)" on #debian-raspberrypi #vmdb2 #tor-relays #grml #tor-project #debian-xen #cryptodotis #tor-dev #tor #xen #oftc #moocows #kvm
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18:34-!-andyhhp is "Andrew Cooper" on #x86 #xsxoteams #xen @#xendevel
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---Logclosed Wed Feb 09 00:00:05 2022