Hi Rohan, Thanks for looking into this. I did what you wrote: Downloaded the source tarball and did a "./configure && make && make check-dmtcp1". Indeed, the test fails. For completeness sake, I attached to this e-mail (build.log) a log of a complete "./configure && make && make check". All tests are failing.
The other attachment (testdir-contents) is a directory listing of the location
where the test scripts copies the checkpoints to. To prove that the checkpoints
files are not all-zeros, below are the first 10 lines of a hexdump of the
dmtcp1 checkpoint
wijnand@linux-6ea7:~/bla> hexdump -C
/tmp/dmtcp-wijn...@linux-6ea7.site/dmtcp-autotest-845315162/ckpt_dmtcp1_1b03894b1c5e0f7-40000-54e6847e.dmtcp
| head -n 10
00000000 1f 8b 08 00 7e 84 e6 54 04 03 ec dd 7d 6c 5d 67 |....~..T....}l]g|
00000010 7d 07 f0 63 a7 49 4c db 39 e6 65 9d 29 2f 75 a1 |}..c.IL.9.e.)/u.|
00000020 65 06 c9 76 ec bc 60 82 18 76 9b b4 37 5b 80 ac |e..v..`..v..7[..|
00000030 24 23 ac 4b 6d 27 76 70 da c4 31 f5 0d 35 94 d1 |$#.Km'vp..1..5..|
00000040 8c b4 2c 16 2b 64 13 db bc a9 62 a1 2a 34 9b d0 |..,.+d....b.*4..|
00000050 94 49 fb 23 e2 0f 9a ae 94 04 6d 62 65 05 2d 7b |.I.#......mbe.-{|
00000060 11 ca 50 db 39 65 48 45 bc 79 08 c8 ce 73 ce f3 |..P.9eHE.y...s..|
00000070 a4 f6 95 9d bb 21 9a 32 fa 39 d5 bd df f3 7b 9e |.....!.2.9....{.|
00000080 e7 bc 7d ee 71 ee cb b9 76 d7 bf 6d cb f5 9b 07 |..}.q...v..m....|
00000090 ae af 6c b8 fe 37 36 bf 63 e3 db b7 0c 6c 7c 5b |..l..76.c....l|[|
I can imagine that the error occurs because of a recent change in the Linux
kernel. Therefore, here is the output of uname on my system:
wijnand@linux-6ea7:~/bla> uname -a
Linux linux-6ea7.site 3.16.7-7-desktop #1 SMP PREEMPT Wed Dec 17 18:00:44 UTC
2014 (762f27a) x86_64 x86_64 x86_64 GNU/Linux
Kind regards,
Wijnand Suijlen
-----Original Message-----
From: Rohan Garg [mailto:rohg...@ccs.neu.edu]
Sent: Friday, February 20, 2015 5:57 PM
To: Wijnand SUIJLEN
Cc: dmtcp-forum
Subject: Re: [Dmtcp-forum] dmtcp_restart (dmtcp 2.3.1) won't restart from
checkpoint on OpenSUSE 13.2
Hi Wijnand,
Could you please try the following steps?
1) Download the source tarball from:
http://sourceforge.net/projects/dmtcp/files/dmtcp-2.x/2.3.1/
2) ./configure && make && make check-dmtcp1
3) Verify that the test passes
Also, could you please verify that the checkpoint image is of non-zero size? It
could be that dmtcp_launch is failing to create a valid checkpoint image.
Thanks,
Rohan
----- Original Message -----
From: "Kapil Arya" <kapil.arya...@gmail.com>
To: "Wijnand SUIJLEN" <wijnand.suij...@huawei.com>
Cc: "dmtcp-forum" <dmtcp-forum@lists.sourceforge.net>
Sent: Friday, February 20, 2015 11:04:04 AM
Subject: Re: [Dmtcp-forum] dmtcp_restart (dmtcp 2.3.1) won't restart from
checkpoint on OpenSUSE 13.2
Rohan/Jiajun,
Can you take a look at it?
Best,
Kapil
On Thu, Feb 19, 2015 at 11:40 AM, Wijnand SUIJLEN < wijnand.suij...@huawei.com
> wrote:
Hi,
I am running OpenSUSE 13.2 (64-bit) inside VirtualBox and I am trying to get
DMTCP 2.3.1 to work on the simple example 'dmtcp1.c' as supplied in the source
tar.gz distribution of the package (dmtcp-2.3.1/test/dmtcp1.c). There are no
complaints from DMTCP when writing the checkpoint. However, the dmtcp_restart
fails to restart the program with the error message "only read 0 bytes instead
of 4096 from checkpoint file".
What am I doing wrong and what should I do to make it work?
Some details:
I have tried it with an installation as built directly from the source
distribution and I tried it with the binary distribution as supplied by
OpenSUSE 13.2: It doesn't make any difference.
http://download.opensuse.org/distribution/13.2/repo/oss/suse/x86_64/dmtcp-2.3.1-2.2.2.x86_64.rpm
http://download.opensuse.org/distribution/13.2/repo/oss/suse/x86_64/dmtcp-devel-2.3.1-2.2.2.x86_64.rpm
--- start console log ---
wijnand@linux-6ea7:~/bla/dmtcp-2.3.1/test> gcc -fPIC -o dmtcp1 dmtcp1.c
wijnand@linux-6ea7:~/bla/dmtcp-2.3.1/test> dmtcp_checkpoint ./dmtcp1
1 2 3 4 5 6 7 8 9 ^C
wijnand@linux-6ea7:~/bla/dmtcp-2.3.1/test> dmtcp_restart
ckpt_dmtcp1_1b03894b1c5e0f7-40000-54e602b1.dmtcp
[27865] mtcp_util.ic:235 mtcp_readfile:
only read 0 bytes instead of 4096 from checkpoint file [27865] mtcp_util.ic:235
mtcp_readfile:
only read 0 bytes instead of 4096 from checkpoint file [27865] mtcp_util.ic:235
mtcp_readfile:
only read 0 bytes instead of 4096 from checkpoint file [27865] mtcp_util.ic:235
mtcp_readfile:
only read 0 bytes instead of 4096 from checkpoint file [27865] mtcp_util.ic:235
mtcp_readfile:
only read 0 bytes instead of 4096 from checkpoint file [27865] mtcp_util.ic:235
mtcp_readfile:
only read 0 bytes instead of 4096 from checkpoint file [27865] mtcp_util.ic:235
mtcp_readfile:
only read 0 bytes instead of 4096 from checkpoint file [27865] mtcp_util.ic:235
mtcp_readfile:
only read 0 bytes instead of 4096 from checkpoint file [27865] mtcp_util.ic:235
mtcp_readfile:
only read 0 bytes instead of 4096 from checkpoint file [27865] mtcp_util.ic:235
mtcp_readfile:
only read 0 bytes instead of 4096 from checkpoint file [27865] mtcp_util.ic:235
mtcp_readfile:
only read 0 bytes instead of 4096 from checkpoint file [27865] mtcp_util.ic:237
mtcp_readfile:
failed to read after 10 tries in a row.
Segmentation fault
wijnand@linux-6ea7:~/bla/dmtcp-2.3.1/test>
--- end console log ---
--- start dmtcp_coordinator log ---
wijnand@linux-6ea7:~/bla/dmtcp-2.3.1/test> dmtcp_coordinator dmtcp_coordinator
(DMTCP) 2.3.1 License LGPLv3+: GNU LGPL version 3 or later <
http://gnu.org/licenses/lgpl.html >.
This program comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to redistribute it under certain
conditions; see COPYING file for details.
(Use flag "-q" to hide this message.)
dmtcp_coordinator starting...
Host: linux-6ea7.site (0.0.0.0)
Port: 7779
Checkpoint Interval: disabled (checkpoint manually instead) Exit on last
client: 0 Type '?' for help.
[27848] NOTE at dmtcp_coordinator.cpp:1040 in onConnect; REASON='worker
connected'
hello_remote.from = 1b03894b1c5e0f7-27851-54e602b1 [27848] NOTE at
dmtcp_coordinator.cpp:825 in onData; REASON='Updating process Information after
exec()'
progname = dmtcp1
msg.from = 1b03894b1c5e0f7-40000-54e602b1
client->identity() = 1b03894b1c5e0f7-27851-54e602b1
c
[27848] NOTE at dmtcp_coordinator.cpp:1271 in startCheckpoint; REASON='starting
checkpoint, suspending all nodes'
s.numPeers = 1
[27848] NOTE at dmtcp_coordinator.cpp:1273 in startCheckpoint;
REASON='Incremented Generation'
compId.generation() = 1
[27848] NOTE at dmtcp_coordinator.cpp:615 in updateMinimumState;
REASON='locking all nodes'
[27848] NOTE at dmtcp_coordinator.cpp:621 in updateMinimumState;
REASON='draining all nodes'
[27848] NOTE at dmtcp_coordinator.cpp:627 in updateMinimumState;
REASON='checkpointing all nodes'
[27848] NOTE at dmtcp_coordinator.cpp:641 in updateMinimumState;
REASON='building name service database'
[27848] NOTE at dmtcp_coordinator.cpp:657 in updateMinimumState;
REASON='entertaining queries now'
[27848] NOTE at dmtcp_coordinator.cpp:662 in updateMinimumState;
REASON='refilling all nodes'
[27848] NOTE at dmtcp_coordinator.cpp:693 in updateMinimumState;
REASON='restarting all nodes'
[27848] NOTE at dmtcp_coordinator.cpp:875 in onDisconnect; REASON='client
disconnected'
client->identity() = 1b03894b1c5e0f7-40000-54e602b1
[27848] NOTE at dmtcp_coordinator.cpp:1096 in validateRestartingWorkerProcess;
REASON='FIRST dmtcp_restart connection. Set numPeers. Generate timestamp'
numPeers = 1
curTimeStamp = 22789762212
compId = 1b03894b1c5e0f7-40000-54e602b1 [27848] NOTE at
dmtcp_coordinator.cpp:1040 in onConnect; REASON='worker connected'
hello_remote.from = 1b03894b1c5e0f7-40000-54e602b1 [27848] NOTE at
dmtcp_coordinator.cpp:875 in onDisconnect; REASON='client disconnected'
client->identity() = 1b03894b1c5e0f7-40000-54e602b1
--- end dmtcp_coordinator log ---
Kind regards,
Wijnand Suijlen
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build.log
Description: build.log
testdir-contents
Description: testdir-contents
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