[CRIU] [PATCH] zdtm: add ability to execute tests on aufs

[Saied Kazemi]

Hi Andrew,

I was kind of afraid of this because none of the kernels that I had
supported mnt_id.  I will install 3.15 to investigate the issue and get
back to you soon.

--Saied



On Tue, Sep 2, 2014 at 7:05 AM, Andrew Vagin <avagin at parallels.com> wrote:

> Hi Saied,
>
> I found an issue, which blocks testing of aufs.
> We can't dump nothing on a new kernel (3.15), which shows mnt_id in
> /proc/PID/fdinfo/FD. Looks like we need to fixup mnt_id for aufs files
> too.
>
> Said, could you look at this issue?
>
>
> [root at avagin-fc19-cr criu]# bash  test/zdtm.sh --aufs  ns/static/env00
> ================================= CRIU CHECK
> =================================
> Error (timerfd.c:56): timerfd: No timerfd support for c/r: Inappropriate
> ioctl for device
> ============================= WARNING =============================
> Not all features needed for CRIU are merged to upstream kernel yet,
> so for now we maintain our own branch which can be cloned from:
> git://git.kernel.org/pub/scm/linux/kernel/git/gorcunov/linux-cr.git
> ===================================================================
> Execute zdtm/live/static/env00
> ./env00 --pidfile=env00.pid --outfile=env00.out --envname=ENV_00_TEST
> /root/git/orig/criu/test
> Dump 30437
> WARNING: env00 returned 1 and left running for debug needs
> Test: zdtm/live/static/env00, Result: FAIL
> ==================================== ERROR
> ====================================
> Test: zdtm/live/static/env00, Namespace: 1
> Dump log   : /root/git/orig/criu/test/dump/static/env00/30437/1/dump.log
> --------------------------------- grep Error
> ---------------------------------
> (00.035741) Error (files-reg.c:629): Unable to look up the 33 mount
> (00.035771) Error (cr-dump.c:1665): Dump mappings (pid: 30437) failed with
> -1
> (00.036042) Error (cr-dump.c:1953): Dumping FAILED.
> ------------------------------------- END
> -------------------------------------
> ================================= ERROR OVER
> =================================
>
> [root at avagin-fc19-cr criu]# cat /proc/30437/mountinfo
> 68 42 0:33 / / rw,relatime - aufs none rw,si=46777ba2737567db
> 43 68 0:35 / /proc rw,relatime - proc proc rw
> 44 68 0:36 / /dev/pts rw,relatime - devpts pts rw,mode=666,ptmxmode=666
>
> [root at avagin-fc19-cr criu]# cat /proc/self/mountinfo | grep ^33
> 33 0 8:3 / / rw,relatime shared:1 - ext4 /dev/sda3 rw,data=ordered
>
>
>
> On Sat, Aug 30, 2014 at 02:49:22PM +0400, Andrew Vagin wrote:
> > And here are a few issues:
> >
> > + cat /tmp/criu-root.7GvnTZ/dump/static/cwd01/6970/1/dump.log
> > (00.012328) Error (cr-dump.c:303): Can't open 6974/cwd on procfs: Stale
> file handle
> > (00.012350) Error (cr-dump.c:1671): Dump fs (pid: 6974) failed with -1
> > (00.012528) Error (cr-dump.c:1953): Dumping FAILED.
> >
> > + cat /tmp/criu-root.HTTKBE/dump/static/unlink_fstat03/14801/1/dump.log
> > (00.009870) Error (files-reg.c:455): Can't link remap to
> /zdtm/live/static/unlink_fstat03.test (deleted): No such file or directory
> > (00.009906) Error (cr-dump.c:1603): Dump files (pid: 14805) failed with
> -1
> > (00.010533) Error (cr-dump.c:1953): Dumping FAILED.
> >
> > + cat /tmp/criu-root.HDf6Nn/dump/static/unlink_mmap00/23065/1/dump.log
> > (00.008996) Error (proc_parse.c:472): Failed stat on 23069's map
> 47071697305600 (/tmp/criu-root.HDf6Nn/zdtm/live/static/unlink_mmap00.test
> (deleted)): No such file or directory
> > (00.009021) Error (cr-dump.c:1515): Collect mappings (pid: 23069) failed
> with -1
> > (00.009228) Error (cr-dump.c:1953): Dumping FAILED.
> >
> > + cat /tmp/criu-root.XULszc/dump/static/inotify00/30616/1/dump.log
> > (00.010422) Error (proc_parse.c:1345): parse_fdinfo_pid_s: error parsing
> [inotify wd:2 ino:1202 sdev:24 mask:800afff ignored_mask:0
> > (00.010465) Error (cr-dump.c:1603): Dump files (pid: 30620) failed with
> -1
> > (00.011124) Error (cr-dump.c:1953): Dumping FAILED.
> >
> > We have problems with unlinked files and fsnotifies.
> >
> > Cc: Saied Kazemi <saied at google.com>
> > Signed-off-by: Andrew Vagin <avagin at openvz.org>
> > ---
> >  test/zdtm.sh | 11 ++++++++++-
> >  1 file changed, 10 insertions(+), 1 deletion(-)
> >
> > diff --git a/test/zdtm.sh b/test/zdtm.sh
> > index eee3342..f92a63f 100755
> > --- a/test/zdtm.sh
> > +++ b/test/zdtm.sh
> > @@ -412,7 +412,12 @@ start_test()
> >                       mkdir -p dump
> >                       ZDTM_ROOT=`mktemp -d /tmp/criu-root.XXXXXX`
> >                       ZDTM_ROOT=`readlink -f $ZDTM_ROOT`
> > -                     mount --make-private --bind . $ZDTM_ROOT || return
> 1
> > +                     if [ -z "$ZDTM_AUFS" ]; then
> > +                             mount --make-private --bind . $ZDTM_ROOT
> || return 1
> > +                     else
> > +                             mount -t aufs -o br=. none $ZDTM_ROOT ||
> return 1
> > +                             cd $ZDTM_ROOT
> > +                     fi
> >               fi
> >               construct_root $ZDTM_ROOT $test || return 1
> >               export ZDTM_NEWNS=1
> > @@ -901,6 +906,10 @@ while :; do
> >               }
> >               shift
> >               ;;
> > +     --aufs)
> > +             export ZDTM_AUFS=1
> > +             shift
> > +             ;;
> >         -*)
> >               echo "Unrecognized option $1, aborting!" 1>&2
> >               usage
> > --
> > 1.9.3
> >
>
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