[Xen-devel] xen 4.5 non-debug error logging misleading when xz support is unavailable

[svenvan svenvan <svenvan.van@xxxxxxxxx>]

Hi,

xen 4.5 building from source on debian wheezy kernel 3.16 amd64

$ xl create wheezy-template-amd64.cfg
Parsing config from wheezy-template64.mens-net.private.cfg
xc: error: panic: xc_dom_bzimageloader.c:730: xc_dom_probe_bzimage_kernel unable to XZ decompress kernel: Invalid kernel
xc: error: panic: xc_dom_core.c:677: xc_dom_find_loader: no loader found: Invalid kernel
libxl: error: libxl_dom.c:583:libxl__build_pv: xc_dom_parse_image failed: No such file or directory
libxl: error: libxl_create.c:1121:domcreate_rebuild_done: cannot (re-)build domain: -3


$ xl -v create wheezy-template-amd64.cfg
Parsing config from wheezy-template64.mens-net.private.cfg
domainbuilder: detail: xc_dom_allocate: cmdline="root=/dev/xvda2 ro elevator=noop", features="(null)"
domainbuilder: detail: xc_dom_kernel_file: filename="/boot/vmlinuz-3.16.0-0.bpo.4-amd64"
domainbuilder: detail: xc_dom_malloc_filemapÂÂÂ : 3058 kB
domainbuilder: detail: xc_dom_ramdisk_file: filename="/boot/initrd.img-3.16.0-0.bpo.4-amd64"
domainbuilder: detail: xc_dom_malloc_filemapÂÂÂ : 13523 kB
domainbuilder: detail: xc_dom_boot_xen_init: ver 4.5, caps xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32 hvm-3.0-x86_32p hvm-3.0-x86_64
domainbuilder: detail: xc_dom_parse_image: called
domainbuilder: detail: xc_dom_find_loader: trying multiboot-binary loader ...
domainbuilder: detail: loader probe failed
domainbuilder: detail: xc_dom_find_loader: trying Linux bzImage loader ...
domainbuilder: detail: xc_try_xz_decode: XZ decompress support unavailable
xc: error: panic: xc_dom_bzimageloader.c:730: xc_dom_probe_bzimage_kernel unable to XZ decompress kernel: Invalid kernel
domainbuilder: detail: loader probe failed
domainbuilder: detail: xc_dom_find_loader: trying ELF-generic loader ...
domainbuilder: detail: loader probe failed
xc: error: panic: xc_dom_core.c:677: xc_dom_find_loader: no loader found: Invalid kernel
libxl: error: libxl_dom.c:583:libxl__build_pv: xc_dom_parse_image failed: No such file or directory
domainbuilder: detail: xc_dom_release: called
libxl: error: libxl_create.c:1121:domcreate_rebuild_done: cannot (re-)build domain: -3

After installing liblzma-dev and recompiling from source I was able to launch domU with no issues.

Thanks

Regards

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