JakeHillion/nixpkgs
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Work around "Input/output error" opening /dev/ttyS0

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E.g. http://hydra.nixos.org/build/5541847

This is a random occurence, maybe due to a race with something else.
So just retry until it works.
This commit is contained in:
Eelco Dolstra 2013-07-16 15:04:32 +02:00
parent 71a197bc6e
commit 90148d6fd1
1 changed files with 2 additions and 1 deletions
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3
modules/testing/test-instrumentation.nix
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@ -22,7 +22,8 @@ let kernel = config.boot.kernelPackages.kernel; in
export DISPLAY=:0.0 export DISPLAY=:0.0
source /etc/profile source /etc/profile
cd /tmp cd /tmp
exec < /dev/hvc0 > /dev/hvc0 2> /dev/ttyS0 exec < /dev/hvc0 > /dev/hvc0
while ! exec 2> /dev/ttyS0; do sleep 0.1; done
echo "connecting to host..." >&2 echo "connecting to host..." >&2
stty -F /dev/hvc0 raw -echo # prevent nl -> cr/nl conversion stty -F /dev/hvc0 raw -echo # prevent nl -> cr/nl conversion
echo echo