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

Saied Kazemi saied at google.com
Tue Sep 2 11:36:16 PDT 2014


Andrew,

I installed 3.15 and ran the env00 test but it succeeded for me (please see
below).  I also verified that checkpointing and restoring Docker containers
using AUFS still works.

I noticed that you're specifying --aufs which was removed in commit
102a6778.

Can you please try again with CRIU source from the head?  If it still
fails, please send me specific information on how to reproduce the problem.

Thanks,

--Saied

$ uname -a
Linux saied-docker 3.15.0-031500-generic #201406131105 SMP Fri Jun 13
15:06:46 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
$ sudo bash test/zdtm.sh 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
/home/saied/work/crtools.upstream/test
Dump 6558
Restore
Check results 6587
18:26:23.831:     5: PASS
Test: zdtm/live/static/env00, Result: PASS
ZDTM tests PASS.

$


On Tue, Sep 2, 2014 at 9:07 AM, Saied Kazemi <saied at google.com> wrote:

> 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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