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nix-store --gc: Make ‘--max-freed 0’ do the right thing 

That is, delete almost nothing (it will still remove unused links from
/nix/store/.links).
This commit is contained in:
Eelco Dolstra 2012-08-01 19:14:30 -04:00
parent 1df702d347
commit 967d066d8e
4 changed files with 6 additions and 7 deletions
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4
src/libstore/gc.cc
View File

@ -550,7 +550,7 @@ bool LocalStore::tryToDelete(GCState & state, const Path & path)
} else } else
deleteGarbage(state, path); deleteGarbage(state, path);
if (state.options.maxFreed && state.results.bytesFreed + state.bytesInvalidated > state.options.maxFreed) { if (state.results.bytesFreed + state.bytesInvalidated > state.options.maxFreed) {
printMsg(lvlInfo, format("deleted or invalidated more than %1% bytes; stopping") % state.options.maxFreed); printMsg(lvlInfo, format("deleted or invalidated more than %1% bytes; stopping") % state.options.maxFreed);
throw GCLimitReached(); throw GCLimitReached();
} }
@ -675,7 +675,7 @@ void LocalStore::collectGarbage(const GCOptions & options, GCResults & results)
throw Error(format("cannot delete path `%1%' since it is still alive") % *i); throw Error(format("cannot delete path `%1%' since it is still alive") % *i);
} }
} else { } else if (options.maxFreed > 0) {
if (shouldDelete(state.options.action)) if (shouldDelete(state.options.action))
printMsg(lvlError, format("deleting garbage...")); printMsg(lvlError, format("deleting garbage..."));

4
src/libstore/store-api.cc
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@ -2,7 +2,7 @@
#include "globals.hh" #include "globals.hh"
#include "util.hh" #include "util.hh"
#include <limits.h> #include <climits>
namespace nix { namespace nix {
@ -12,7 +12,7 @@ GCOptions::GCOptions()
{ {
action = gcDeleteDead; action = gcDeleteDead;
ignoreLiveness = false; ignoreLiveness = false;
maxFreed = 0; maxFreed = ULLONG_MAX;
} }

3
src/libstore/store-api.hh
View File

@ -48,8 +48,7 @@ struct GCOptions
/* For `gcDeleteSpecific', the paths to delete. */ /* For `gcDeleteSpecific', the paths to delete. */
PathSet pathsToDelete; PathSet pathsToDelete;
/* Stop after at least `maxFreed' bytes have been freed. 0 means /* Stop after at least `maxFreed' bytes have been freed. */
no limit. */
unsigned long long maxFreed; unsigned long long maxFreed;
GCOptions(); GCOptions();

2
src/nix-store/nix-store.cc
View File

@ -583,7 +583,7 @@ static void opGC(Strings opFlags, Strings opArgs)
else if (*i == "--delete") options.action = GCOptions::gcDeleteDead; else if (*i == "--delete") options.action = GCOptions::gcDeleteDead;
else if (*i == "--max-freed") { else if (*i == "--max-freed") {
long long maxFreed = getIntArg<long long>(*i, i, opFlags.end()); long long maxFreed = getIntArg<long long>(*i, i, opFlags.end());
options.maxFreed = maxFreed >= 1 ? maxFreed : 1; options.maxFreed = maxFreed >= 0 ? maxFreed : 0;
} }
else throw UsageError(format("bad sub-operation `%1%' in GC") % *i); else throw UsageError(format("bad sub-operation `%1%' in GC") % *i);