diff options
| -rw-r--r-- | src/libstore/optimise-store.cc | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/src/libstore/optimise-store.cc b/src/libstore/optimise-store.cc index d15049201..3ed54e24d 100644 --- a/src/libstore/optimise-store.cc +++ b/src/libstore/optimise-store.cc @@ -119,9 +119,23 @@ static void hashAndLink(bool dryRun, HashToPath & hashToPath, } /* Atomically replace the old file with the new hard link. */ - if (rename(tempLink.c_str(), path.c_str()) == -1) + if (rename(tempLink.c_str(), path.c_str()) == -1) { + if (errno == EMLINK) { + /* Some filesystems generate too many links on the + rename, rather than on the original link. + (Probably it temporarily increases the st_nlink + field before decreasing it again.) */ + printMsg(lvlInfo, format("`%1%' has maximum number of links") % prevPath.first); + hashToPath[hash] = std::pair<Path, ino_t>(path, st.st_ino); + + /* Unlink the temp link. */ + if (unlink(tempLink.c_str()) == -1) + printMsg(lvlError, format("unable to unlink `%1%'") % tempLink); + return; + } throw SysError(format("cannot rename `%1%' to `%2%'") % tempLink % path); + } } else printMsg(lvlTalkative, format("would link `%1%' to `%2%'") % path % prevPath.first); |