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Diffstat (limited to 'results/scraper/launchpad-without-comments/1858046')
| -rw-r--r-- | results/scraper/launchpad-without-comments/1858046 | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/results/scraper/launchpad-without-comments/1858046 b/results/scraper/launchpad-without-comments/1858046 new file mode 100644 index 000000000..f7ad0eca2 --- /dev/null +++ b/results/scraper/launchpad-without-comments/1858046 @@ -0,0 +1,28 @@ +qemu-aarch64 hangs on cptofs during a build of NixOS SD card image + +First, thank you for this incredible project. + +While following this guide to build my own image of NixOS: https://nixos.wiki/wiki/NixOS_on_ARM#Compiling_through_QEMU on ARM Aarch64. + +I encountered a very strange behavior, qemu is correctly used and build most of the binaries until it executes this exact line over qemu: https://github.com/NixOS/nixpkgs/blob/master/nixos/lib/make-ext4-fs.nix#L55 + +At this step, the qemu process goes to 100 % of CPU, hangs in a certain syscall I don't know which one (according to strace & gdb which has no symbols so breaking and looking the backtrace was useless). + +According to iotop, no I/O was done. + +And it spent all its time in this syscall during more than 10 hours, which looks anomalous to me. + +I attach some of my CPU info: + +model : 142 +model name : Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz +stepping : 10 +microcode : 0x96 +cpu MHz : 3107.071 +cache size : 8192 KB + +I'm using a ThinkPad T480 to perform those builds, I'm uncertain of how to debug further this issue, I discussed this with some people over #nixos-aarch64 and they told me they didn't know how to debug it further too. + +I tried all with this package: https://aur.archlinux.org/packages/qemu-arm-static/ — I'm currently compiling qemu-git to see if it happens on upstream too. Will comment when it's done. + +Thank you in advance! \ No newline at end of file |