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From: Paul Holzinger <pholzing@redhat.com>
To: passt-dev@passt.top
Subject: Race condition with pasta COMMAND...
Date: Mon, 30 Jan 2023 19:08:14 +0100	[thread overview]
Message-ID: <984f4c24-8fe4-71db-1fa6-174a1f5b055f@redhat.com> (raw)

Hi all,

while debugging some things I used `./pasta --config-net -- nslookup 
google.com 1.1.1.1` to test dns.
The problem is that does not work because the nslookup process will be 
executed before pasta is
ready with the netns setup, i.e. compare `./pasta --config-net -- ip a`.

So a workaround is to spawn a shell and sleep: `sh -c "sleep 1; nslookup 
google.com 1.1.1.1"`
However this is ugly and does not ensure that the netns is ready after 
one second. As a user
I would expect pasta to wait until the setup is finished before it calls 
exec().
I can send a patch if you agree and I find some time.

---
Paul


             reply	other threads:[~2023-01-30 18:08 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-01-30 18:08 Paul Holzinger [this message]
2023-01-31 13:02 ` Race condition with pasta COMMAND Stefano Brivio
2023-01-31 18:00   ` Paul Holzinger
2023-01-31 18:43     ` Stefano Brivio

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