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Code Issues Releases Wiki Activity

restore --verify: buffer reuse consistency and comment

This commit is contained in:
greatroar 2020-03-19 12:56:11 +01:00 committed by Michael Eischer
parent 2b94742ca5
commit bdcdfaf6b4
1 changed files with 4 additions and 1 deletions
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5
internal/restorer/restorer.go
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@ -363,7 +363,10 @@ func (res *Restorer) VerifyFiles(ctx context.Context, dst string) (int, error) {
}
// Verify that the file target has the contents of node.
//
// buf and the first return value are scratch space, passed around for reuse.
// Reusing buffers prevents the verifier goroutines allocating all of RAM and
// flushing the filesystem cache (at least on Linux).
func (res *Restorer) verifyFile(target string, node *restic.Node, buf []byte) ([]byte, error) {
f, err := os.Open(target)
if err != nil {
@ -374,7 +377,7 @@ func (res *Restorer) verifyFile(target string, node *restic.Node, buf []byte) ([
fi, err := f.Stat()
switch {
case err != nil:
return nil, err
return buf, err
case int64(node.Size) != fi.Size():
return buf, errors.Errorf("Invalid file size for %s: expected %d, got %d",
target, node.Size, fi.Size())