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I'd try again with a clean kernel tree but using make oldconfig. It's possible the automagic stuff answered n somewhere where you need a y. |
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|
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On 19 August 2017 21:28:05 EEST, Ralph Seichter <m16+gentoo@×××××××××××.net> wrote: |
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>It seems strange to me as I write it, but since I updated one of my |
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>virtual servers from Kernel version 4.9.34 to 4.12.5, the server |
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>(Gentoo |
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>Linux running as a KVM guest) is experiencing timeouts when trying to |
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>connect to DNS resolvers. For the Kernel update, I followed the same |
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>steps I used for years, like |
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> |
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> cd /usr/src/linux |
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> zcat /proc/config.gz >.config |
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> make silentoldconfig (answering "no" whereever possible) |
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> make ... |
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> |
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>After booting with Kernel 4.12, commands like "dig +trace www.ibm.com" |
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>work just fine for a while, duration depending on server load, but |
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>after |
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>some threshold is passed, all further attempts to contact resolvers |
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>fail |
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>due to timeouts. |
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> |
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>I have tried running a local, caching resolver (BIND 9) on the server, |
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>like I usually do, and also tried using the hoster's dedicated |
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>resolvers. |
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>With Kernel 4.12, I see timeouts in both cases. These problems do not |
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>occur when I boot with the 4.9 Kernel which I have been using for the |
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>past two months. |
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> |
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>It is also worth noting that I updated two other servers to Kernel 4.12 |
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>without any issues, but these are "real" servers, not VMs. At this |
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>point |
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>I am searching for ways to debug the issue, vaguely suspecting some KVM |
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>magic behind it (without any proof). I know that Kernel 4.11 introduced |
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>several KVM related changes, but that's about it. |
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> |
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>I appreciate all pointers. |
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> |
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>-Ralph |
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|
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-- |
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Sent from my Android device with K-9 Mail. Please excuse my brevity. |