lop2.autonlab.org temp replaced with deimos.autonlab.org

Predrag Punosevac predragp at andrew.cmu.edu
Mon May 30 17:41:00 EDT 2022


Dear Autonians,

I hope you have a good Memorial day weekend. Instead of barbequing, I
decided to upgrade our Xen host from Alpine Linux 3.15.4 to 3.16.0.
Unfortunately, things didn't go well and it appears that Xen host is
temporarily broken. For the record the upstream broke things as they rolled
out 3.16.0 without sufficient testing. Obviouly I was dumb enough not to
check things before upgrading.


xen1:/etc/xen/my-guests/auto# xl create lop2.cfg
Parsing config from lop2.cfg
libxl: info: libxl_create.c:121:libxl__domain_build_info_setdefault:
qemu-xen is unavailable, using qemu-xen-traditional instead: No such file
or directory
xc: error: panic: xg_dom_core.c:206: failed to open file
'/usr/lib/xen/boot/ipxe.bin': No such file or directory: Internal error
libxl: error: libxl_dom.c:990:libxl__domain_firmware: failed to load IPXE
/usr/lib/xen/boot/ipxe.bin (-1): No such file or directory
libxl: error: libxl_dom.c:1087:libxl__build_hvm: initializing domain
firmware failed
libxl: error: libxl_create.c:1611:domcreate_rebuild_done: Domain 6:cannot
(re-)build domain: -3
libxl: error: libxl_domain.c:1183:libxl__destroy_domid: Domain
6:Non-existant domain
libxl: error: libxl_domain.c:1137:domain_destroy_callback: Domain 6:Unable
to destroy guest
libxl: error: libxl_domain.c:1064:domain_destroy_cb: Domain 6:Destruction
of domain failed


That affects a handful of lightly used virtual machines but also shell
gateway

lop2.autonlab.org

I quickly changed routing tables so that you can use

deimos.autonlab.org

instead.  That way the number of shell gateways for people who don't have
Auton Lab desktops remains 3 with the caveat that bash is unstable due to
the hardware problems. I will try to replace it in a day or two.

The ssh to demos.autonlab.org will take you to foxconn CPU computing node.
Please don't use that computing node unless you don't have other
alternatives.

Most Kind Regards,
P^2
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