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Report daemon OOM better 

When copying a large path causes the daemon to run out of memory, you
now get:

  error: Nix daemon out of memory

instead of:

  error: writing to file: Broken pipe
This commit is contained in:
Eelco Dolstra 2014-06-10 13:45:50 +02:00
parent 829af22759
commit b1beed97a0
2 changed files with 19 additions and 9 deletions
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22
src/libstore/remote-store.cc
View File

@ -402,11 +402,23 @@ Path RemoteStore::addToStore(const Path & _srcPath,
writeInt((hashAlgo == htSHA256 && recursive) ? 0 : 1, to);
writeInt(recursive ? 1 : 0, to);
writeString(printHashType(hashAlgo), to);
to.written = 0;
to.warn = true;
dumpPath(srcPath, to, filter);
to.warn = false;
processStderr();
try {
to.written = 0;
to.warn = true;
dumpPath(srcPath, to, filter);
to.warn = false;
processStderr();
} catch (SysError & e) {
/* Daemon closed while we were sending the path. Probably OOM
or I/O error. */
if (e.errNo == EPIPE)
try {
processStderr();
} catch (EndOfFile & e) { }
throw;
}
return readStorePath(from);
}

6
src/nix-daemon/nix-daemon.cc
View File

@ -735,12 +735,10 @@ static void processConnection(bool trusted)
during addTextToStore() / importPath(). If that
happens, just send the error message and exit. */
bool errorAllowed = canSendStderr;
if (!errorAllowed) printMsg(lvlError, format("error processing client input: %1%") % e.msg());
stopWork(false, e.msg(), GET_PROTOCOL_MINOR(clientVersion) >= 8 ? e.status : 0);
if (!errorAllowed) break;
if (!errorAllowed) throw;
} catch (std::bad_alloc & e) {
if (canSendStderr)
stopWork(false, "Nix daemon out of memory", GET_PROTOCOL_MINOR(clientVersion) >= 8 ? 1 : 0);
stopWork(false, "Nix daemon out of memory", GET_PROTOCOL_MINOR(clientVersion) >= 8 ? 1 : 0);
throw;
}