| Message ID | 20230824020704.1893521-1-ddouwsma@redhat.com (mailing list archive) |
|---|---|
| State | Deferred, archived |
| Headers | show |
| Series | [v3] xfsrestore: suggest -x rather than assert for false roots | expand |
On Thu, Aug 24, 2023 at 12:07:04PM +1000, Donald Douwsma wrote: > If we're going to have a fix for false root problems its a good idea to > let people know that there's a way to recover, error out with a useful > message that mentions the `-x` option rather than just assert. > > Before > > xfsrestore: searching media for directory dump > xfsrestore: reading directories > xfsrestore: tree.c:757: tree_begindir: Assertion `ino != persp->p_rootino || hardh == persp->p_rooth' failed. > Aborted > > After > > xfsrestore: ERROR: tree.c:791: tree_begindir: Assertion `ino != persp->p_rootino || hardh == persp->p_rooth` failed. > xfsrestore: ERROR: False root detected. Recovery may be possible using the `-x` option > Aborted > > Fixes: d7cba7410710 ("xfsrestore: fix rootdir due to xfsdump bulkstat misuse") > Signed-off-by: Donald Douwsma <ddouwsma@redhat.com> > Reviewed-by: Darrick J. Wong <djwong@kernel.org> Thanks for the patch! Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com> > > --- > Changes for v2 > - Use xfsprogs style for conditional > - Remove trailing white-space > - Place printf format all on one line for grepability > - use __func__ instead of gcc specific __FUNCTION__ > Changes for v3 > - Fix indentation of if statement > --- > restore/tree.c | 11 +++++++++-- > 1 file changed, 9 insertions(+), 2 deletions(-) > > diff --git a/restore/tree.c b/restore/tree.c > index bfa07fe..6f3180f 100644 > --- a/restore/tree.c > +++ b/restore/tree.c > @@ -783,8 +783,15 @@ tree_begindir(filehdr_t *fhdrp, dah_t *dahp) > /* lookup head of hardlink list > */ > hardh = link_hardh(ino, gen); > - if (need_fixrootdir == BOOL_FALSE) > - assert(ino != persp->p_rootino || hardh == persp->p_rooth); > + if (need_fixrootdir == BOOL_FALSE && > + !(ino != persp->p_rootino || hardh == persp->p_rooth)) { > + mlog(MLOG_ERROR | MLOG_TREE, > +"%s:%d: %s: Assertion `ino != persp->p_rootino || hardh == persp->p_rooth` failed.\n", > + __FILE__, __LINE__, __func__); > + mlog(MLOG_ERROR | MLOG_TREE, _( > +"False root detected. Recovery may be possible using the `-x` option\n")); > + return NH_NULL; > + } > > /* already present > */ > -- > 2.39.3 >
diff --git a/restore/tree.c b/restore/tree.c index bfa07fe..6f3180f 100644 --- a/restore/tree.c +++ b/restore/tree.c @@ -783,8 +783,15 @@ tree_begindir(filehdr_t *fhdrp, dah_t *dahp) /* lookup head of hardlink list */ hardh = link_hardh(ino, gen); - if (need_fixrootdir == BOOL_FALSE) - assert(ino != persp->p_rootino || hardh == persp->p_rooth); + if (need_fixrootdir == BOOL_FALSE && + !(ino != persp->p_rootino || hardh == persp->p_rooth)) { + mlog(MLOG_ERROR | MLOG_TREE, +"%s:%d: %s: Assertion `ino != persp->p_rootino || hardh == persp->p_rooth` failed.\n", + __FILE__, __LINE__, __func__); + mlog(MLOG_ERROR | MLOG_TREE, _( +"False root detected. Recovery may be possible using the `-x` option\n")); + return NH_NULL; + } /* already present */
If we're going to have a fix for false root problems its a good idea to let people know that there's a way to recover, error out with a useful message that mentions the `-x` option rather than just assert. Before xfsrestore: searching media for directory dump xfsrestore: reading directories xfsrestore: tree.c:757: tree_begindir: Assertion `ino != persp->p_rootino || hardh == persp->p_rooth' failed. Aborted After xfsrestore: ERROR: tree.c:791: tree_begindir: Assertion `ino != persp->p_rootino || hardh == persp->p_rooth` failed. xfsrestore: ERROR: False root detected. Recovery may be possible using the `-x` option Aborted Fixes: d7cba7410710 ("xfsrestore: fix rootdir due to xfsdump bulkstat misuse") Signed-off-by: Donald Douwsma <ddouwsma@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> --- Changes for v2 - Use xfsprogs style for conditional - Remove trailing white-space - Place printf format all on one line for grepability - use __func__ instead of gcc specific __FUNCTION__ Changes for v3 - Fix indentation of if statement --- restore/tree.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-)