BIRD 3.0alpha2

[Daniel Suchy]

Thanks! I can confirm it works now even with `-f` :-)

On 5/13/23 20:46, Maria Matejka via Bird-users wrote:
> Hello!
> 
> Thank you for your report.
> 
> The systemd unit file should definitely be Type=forking and without -f 
> for BIRD. Will fix that soon also in v2.
> 
> The bad fd itself was caused by an invalid pointer usage caused by 
> missing else.
> 
> Here you can download new packages to check it for yourself.
> 
> https://gitlab.nic.cz/labs/bird/-/pipelines/112818
> 
> Maria
> 
> On 5/13/23 13:59, Daniel Suchy via Bird-users wrote:
>> Hello,
>> when I'm using prebuilt packages from your CI [1], I noticed issue 
>> with Bird 3.0alpha2 startup using provided systemd unit, but only when 
>> BFD protocol is enabled (but, for example BGP or static protocols 
>> weren't affected). This isn't happening with version 2.13 [2], which 
>> uses similar unit file.
>>
>> When BFD is enabled, v 3.0 daemon terminates on:
>> [pid 55564] write(14</var/log/bird/bird.log>, "2023-05-13 13:00:03.281 
>> [0001] <TRACE> bfd1: Initializing\n", 58)                  = 58
>> [pid 55564] write(14</var/log/bird/bird.log>, "2023-05-13 13:00:03.281 
>> [0001] <TRACE> bfd1: Starting\n", 54)                      = 54
>> [pid 55564] write(0</dev/null<char 1:3>>, "\1", 1) = -1 EBADF (Bad 
>> file descriptor)
>> [pid 55564] write(14</var/log/bird/bird.log>, "2023-05-13 13:00:03.281 
>> [0001] <BUG> wakeup write: Bad file descriptor\n", 71)     = 71
>> [pid 55564] --- SIGABRT {si_signo=SIGABRT, si_code=SI_TKILL, 
>> si_pid=55564, si_uid=101} ---
>>
>> This is hapenning only when systemd unit starts bird with "-f" 
>> (foreground) parameter.  If i modify systemd unit to run daemon in 
>> background, daemon starts:
>>
>> -ExecStart=/usr/sbin/bird -f -u $BIRD_RUN_USER -g $BIRD_RUN_GROUP 
>> $BIRD_ARGS
>> +ExecStart=/usr/sbin/bird -u $BIRD_RUN_USER -g $BIRD_RUN_GROUP $BIRD_ARGS
>> +Type=forking
>>
>> There is something strange between bird and systemd :-) When I start 
>> bird manually in foreground, everything also works as expected. Below 
>> is very also minimalist configuration I used for debug the issue.
>>
>> - Daniel
>>
>> [1] 
>> https://gitlab.nic.cz/labs/bird/-/jobs/892286/artifacts/browse/pkg/pkgs/debian-11/bird2_3.0alpha2.1683909033.deb303a4-cznic.1/
>> [2] 
>> https://gitlab.nic.cz/labs/bird/-/jobs/883883/artifacts/browse/pkg/pkgs/debian-11/bird2_2.13.1682261375.ca0f239c-cznic.1/
>>
>> ----
>> log "/var/log/bird/bird.log" all;
>> debug protocols all;
>>
>> protocol device {
>> }
>>
>> protocol bfd {
>> }
>> ----
>>
>>
>> On 5/12/23 18:37, Ondrej Filip wrote:
>>> Dear BIRD Users,
>>> we are releasing another alpha version of BIRD 3. We've found some 
>>> annoying bugs and fixed some usability issues as well as several 
>>> issues with BIRD crashing. We also added a simple work balancing 
>>> algorithm between threads. MRT is still switched off, BMP is not 
>>> merged; they will get into some future alpha version.
>>>
>>> Measured performance in BGP is approx. 6-10x better (with 20 threads) 
>>> than version 2.13, depending on the actual configuration. Kernel 
>>> synchronization is slow with a large number of routes; we will look 
>>> into it soon.
>>>
>>> If you have some time for trying this version out, we would love to 
>>> hear your feedback.
>>>
>>> I thank my colleagues and namely Maria for this release!
>>>
>>> Cheers
>>>      Ondrej
>