最近在還原 xfsdump 所做的備份時, 碰到幾次無法由原本的備份檔中把所有的檔案還原. 還原的過程會出現

xfsrestore: WARNING: corrupt extent header
xfsrestore: WARNING: unable to resync media file: some portion of dump

這樣的訊息. 在這訊息之後就會中斷還原 (不過最後還是回報成功).

查了一下備份時的訊息, 發現只要有出現這類的訊息, 所產生的備份檔在還原時就會出現上頭這個錯誤.

/sbin/xfsdump: WARNING: could not open regular file ino 33905028 mode
0x00008180: Stale NFS file handle: not dumped
/sbin/xfsdump: WARNING: could not get list of non-root attributes for
nondir ino 33905028: Stale NFS file handle (116)
/sbin/xfsdump: WARNING: could not get list of root attributes for
nondir ino 33905028: Stale NFS file handle (116)
/sbin/xfsdump: WARNING: could not get list of secure attributes for
nondir ino 33905028: Stale NFS file handle (116)

回報給 XFS 的 team 之後, 得到了這一個 patch:

diff --git a/dump/content.c b/dump/content.c
index 3a7f508..f915a8b 100644
--- a/dump/content.c
+++ b/dump/content.c
@@ -270,7 +270,8 @@ static rv_t dump_file_reg( drive_t *drivep,
          context_t *contextp,
          content_inode_hdr_t *scwhdrp,
          jdm_fshandle_t *,
-         xfs_bstat_t * );
+         xfs_bstat_t *,
+         bool_t *);
 static rv_t dump_file_spec( drive_t *drivep,
           context_t *contextp,
           jdm_fshandle_t *,
@@ -3690,6 +3691,7 @@ dump_file( void *arg1,
                cwhdrp->ch_specific;
   startpt_t *startptp = &scwhdrp->cih_startpt;
   startpt_t *endptp = &scwhdrp->cih_endpt;
+  bool_t file_skipped = BOOL_FALSE;
   intgen_t state;
   rv_t rv;
 
@@ -3835,7 +3837,8 @@ dump_file( void *arg1,
             contextp,
             scwhdrp,
             fshandlep,
-            statp );
+            statp,
+            &file_skipped );
     if ( statp->bs_ino > contextp->cc_stat_lastino ) {
       lock( );
       sc_stat_nondirdone++;
@@ -3883,6 +3886,8 @@ dump_file( void *arg1,
 
   if ( rv == RV_OK
        &&
+       file_skipped == BOOL_FALSE
+       &&
        sc_dumpextattrpr
        &&
        ( statp->bs_xflags & XFS_XFLAG_HASATTR )) {
@@ -3903,7 +3908,8 @@ dump_file_reg( drive_t *drivep,
          context_t *contextp,
          content_inode_hdr_t *scwhdrp,
          jdm_fshandle_t *fshandlep,
-         xfs_bstat_t *statp )
+         xfs_bstat_t *statp,
+         bool_t *file_skippedp )
 {
   startpt_t *startptp = &scwhdrp->cih_startpt;
   startpt_t *endptp = &scwhdrp->cih_endpt;
@@ -3996,6 +4002,7 @@ dump_file_reg( drive_t *drivep,
           statp->bs_ino,
           statp->bs_mode,
           strerror( errno ));
+    *file_skippedp = BOOL_TRUE;
     return RV_OK;
   }
 
diff --git a/restore/content.c b/restore/content.c
index a9e0b20..a773552 100644
--- a/restore/content.c
+++ b/restore/content.c
@@ -763,6 +763,7 @@ static rv_t read_filehdr( drive_t *drivep, filehdr_t *fhdrp, bool_t fhcs );
 static rv_t restore_file( drive_t *drivep,
         filehdr_t *fhdrp,
         bool_t ehcs,
+        bool_t ahcs,
         char *path1,
         char *path2 );
 static bool_t restore_reg( drive_t *drivep,
@@ -3425,7 +3426,7 @@ applynondirdump( drive_t *drivep,
       strctxp->sc_path[0] = '\0';
       strctxp->sc_fd = -1;
 
-      rv = restore_file( drivep, fhdrp, ehcs, path1, path2 );
+      rv = restore_file( drivep, fhdrp, ehcs, ahcs, path1, path2 );
 
     } else if ( fhdrp->fh_flags & FILEHDR_FLAGS_EXTATTR ) {
       rv = restore_extattr( drivep,
@@ -7153,6 +7154,7 @@ struct cb_context {
   filehdr_t *cb_fhdrp;
   rv_t cb_rv;
   bool_t cb_ehcs;
+  bool_t cb_ahcs;
   char *cb_path1;
   char *cb_path2;
 };
@@ -7165,6 +7167,7 @@ static rv_t
 restore_file( drive_t *drivep,
         filehdr_t *fhdrp,
         bool_t ehcs,
+        bool_t ahcs,
         char *path1,
         char *path2 )
 {
@@ -7180,6 +7183,7 @@ restore_file( drive_t *drivep,
   context.cb_fhdrp = fhdrp;
   context.cb_rv = RV_OK;
   context.cb_ehcs = ehcs;
+  context.cb_ahcs = ahcs;
   context.cb_path1 = path1;
   context.cb_path2 = path2;
   rv = tree_cb_links( bstatp->bs_ino,
@@ -7212,6 +7216,7 @@ restore_file_cb( void *cp, bool_t linkpr, char *path1, char *path2 )
   bstat_t *bstatp = &fhdrp->fh_stat;
   rv_t *rvp = &contextp->cb_rv;
   bool_t ehcs = contextp->cb_ehcs;
+  bool_t ahcs = contextp->cb_ahcs;
   stream_context_t *strctxp = (stream_context_t *)drivep->d_strmcontextp;
 
   int rval;
@@ -7237,12 +7242,22 @@ restore_file_cb( void *cp, bool_t linkpr, char *path1, char *path2 )
       ok = restore_reg( drivep, fhdrp, rvp, path1 );
       if (!ok)
         return ok;
-      ok = restore_extent_group( drivep,
-               fhdrp,
-               path1,
-               strctxp->sc_fd,
-               ehcs,
-               rvp );
+      if ( fhdrp->fh_flags & FILEHDR_FLAGS_EXTATTR ) {
+        *rvp = restore_extattr( drivep,
+              fhdrp,
+              path1,
+              ahcs,
+              BOOL_FALSE, /* isdirpr */
+              BOOL_FALSE, /* onlydoreadpr */
+              DAH_NULL );
+      } else {
+        ok = restore_extent_group( drivep,
+                 fhdrp,
+                 path1,
+                 strctxp->sc_fd,
+                 ehcs,
+                 rvp );
+      }
       return ok;
     case S_IFBLK:
     case S_IFCHR:

希望修正後不要再發生相同的情形了.