Re: [Buildroot] [PATCH 1/1] package/lxc: bump to version 4.0.11

[Romain Naour <romain.naour@gmail.com>]

Hello Fabrice, Joachim, All,

Le 03/01/2022 à 09:41, Joachim Wiberg a écrit :
> On Sat, Jan 01, 2022 at 23:59, Fabrice Fontaine <fontaine.fabrice@gmail.com> wrote:
>> The LXC 4.0 branch is supported until June 2025.
>> Only bugfixes and securitiy issues get included into the stable bugfix
>> releases, so it's always safe and recommended to keep up and run the
>> latest bugfix release.

Well it also includes new features since this version bump break lxc with all
kernel < 5.6 due to the broken fall back when the new mount API is not supported.

We have a test for lxc using a kernel 4.19 that trigger this issue [1].

See lxc.log:

(kernel 5.5)
DEBUG conf - conf.c:lxc_setup_devpts_child:1682 - No new devpts instance will be
mounted since no pts devices are required
lxc-start lxc_iperf3  DEBUG conf - conf.c:lxc_setup_dev_console:1966 - Cleared
all (0) mounts from "/dev/console"
lxc-start lxc_iperf3  ERROR mount_utils - mount_utils.c:mount_at:661 - No such
file or directory - Failed to mount "/proc/self/fd/44" to "/proc/self/fd/43"
lxc-start lxc_iperf3  ERROR conf - conf.c:lxc_setup_dev_console:1988 - No such
file or directory - Failed to mount "10(/dev/pts/0)" on "43"
lxc-start lxc_iperf3  ERROR conf - conf.c:lxc_setup_console:2143 - No such file
or directory - Failed to setup console

(kernel 5.6)
lxc-start lxc_iperf3  TRACE mount_utils - mount_utils.c:can_use_mount_api:582 -
Kernel supports mount api
lxc-start lxc_iperf3  TRACE mount_utils - mount_utils.c:move_detached_mount:328
- Attach detached mount 45 to filesystem at 43
lxc-start lxc_iperf3  TRACE conf - conf.c:lxc_setup_dev_console:1990 - Setup
console "/dev/pts/0"

[1] https://gitlab.com/buildroot.org/buildroot/-/jobs/2006798998

This issue is not yet fixed in lxc stable-4.0 branch.

Can you have a look?

Best regards,
Romain


>>
>> https://discuss.linuxcontainers.org/t/lxc-4-0-11-has-been-released/12427
>>
>> Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
> 
> Reviewed-by: Joachim Wiberg <troglobit@gmail.com>
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