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Truncate the log just before starting the remote build

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This gets rid of all those remote substitution messages that were
polluting the build logs.
This commit is contained in:
Eelco Dolstra 2016-10-26 13:39:43 +02:00
parent a12e9478e7
commit 8e1d791d0c
1 changed files with 10 additions and 2 deletions
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12
src/hydra-queue-runner/build-remote.cc
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@ -136,8 +136,6 @@ void State::buildRemote(ref<Store> destStore,
Child child;
openConnection(machine, tmpDir, logFD.get(), child);
logFD = -1;
FdSource from(child.from.get());
FdSink to(child.to.get());
@ -223,6 +221,16 @@ void State::buildRemote(ref<Store> destStore,
autoDelete.cancel();
/* Truncate the log to get rid of messages about substitutions
etc. on the remote system. */
if (lseek(logFD.get(), SEEK_SET, 0) != 0)
throw SysError("seeking to the start of log file ‘%s’", result.logFile);
if (ftruncate(logFD.get(), 0) == -1)
throw SysError("truncating log file ‘%s’", result.logFile);
logFD = -1;
/* Do the build. */
printMsg(lvlDebug, format("building ‘%1%’ on ‘%2%’") % step->drvPath % machine->sshName);