From: Michael Vrable <mvrable@cs.ucsd.edu>
Date: Sat, 16 Jun 2007 02:29:54 +0000 (-0700)
Subject: Wait to write the backup description until a backup is finished.
X-Git-Url: http://git.vrable.net/?p=cumulus.git;a=commitdiff_plain;h=2031f2b23774af66f34aefb282603e7ea527d580

Wait to write the backup description until a backup is finished.
---

diff --git a/scandir.cc b/scandir.cc
index 3d4dcb5..0f4ba4e 100644
--- a/scandir.cc
+++ b/scandir.cc
@@ -458,17 +458,13 @@ int main(int argc, char *argv[])
     tss = new TarSegmentStore(backup_dest);
     block_buf = new char[LBS_BLOCK_SIZE];
 
-    /* Write a backup descriptor file, which says which segments are needed and
-     * where to start to restore this snapshot.  The filename is based on the
-     * current time. */
+    /* Store the time when the backup started, so it can be included in the
+     * snapshot name. */
     time_t now;
     struct tm time_buf;
     char desc_buf[256];
     time(&now);
     localtime_r(&now, &time_buf);
-    strftime(desc_buf, sizeof(desc_buf), "%Y%m%dT%H%M%S", &time_buf);
-    string desc_filename = backup_dest + "/" + desc_buf + ".lbs";
-    std::ofstream descriptor(desc_filename.c_str());
 
     /* Open the local database which tracks all objects that are stored
      * remotely, for efficient incrementals.  Provide it with the name of this
@@ -491,8 +487,15 @@ int main(int argc, char *argv[])
     root->set_data(md.data(), md.size());
     root->write(tss);
     root->checksum();
-
     segment_list.insert(root->get_ref().get_segment());
+
+    /* Write a backup descriptor file, which says which segments are needed and
+     * where to start to restore this snapshot.  The filename is based on the
+     * current time. */
+    strftime(desc_buf, sizeof(desc_buf), "%Y%m%dT%H%M%S", &time_buf);
+    string desc_filename = backup_dest + "/" + desc_buf + ".lbs";
+    std::ofstream descriptor(desc_filename.c_str());
+
     descriptor << "Format: LBS Snapshot v0.1\n";
     strftime(desc_buf, sizeof(desc_buf), "%Y-%m-%d %H:%M:%S %z", &time_buf);
     descriptor << "Date: " << desc_buf << "\n";