On 02/18/2014 01:51 AM, Luiz Capitulino wrote:
On Tue, 11 Feb 2014 12:00:56 -0500
Luiz Capitulino<lcapitul...@redhat.com> wrote:
On Tue, 28 Jan 2014 14:21:53 +0800
qiaonuohan<qiaonuo...@cn.fujitsu.com> wrote:
Hi, all
The last version is here:
http://lists.nongnu.org/archive/html/qemu-devel/2014-01/msg00209.html
Command 'dump-guest-memory' was introduced to dump guest's memory. But the
vmcore's format is only elf32 or elf64. The message is here:
http://lists.gnu.org/archive/html/qemu-devel/2012-04/msg03379.html
Compared with migration, the missing of compression feature means regression
to 'dump-guest-memory'. So we post these patches to make 'dump-guest-memory' be
able to dump guest's in kdump-compressed format. Then vmcore can be much
smaller, and easily to be delivered.
The kdump-compressed format is *linux specific* *linux standard* crash dump
format used in kdump framework. The kdump-compressed format is readable only
with the crash utility, and it can be smaller than the ELF format because of
the compression support. To get more detailed information about
kdump-compressed format, please refer to the following URL:
http://sourceforge.net/projects/makedumpfile/
I did what was requested by Paolo. I applied patches 1 to 12 and will wait
for the rework on patch 13.
Unfortunately this series doesn't build on 32-bit hosts, so I had to drop it
from my queue (see error below). Can you please do the following:
1. Fix the build
2. Add new patch 13/13 to the series
3. Add Ekaterina's patch to your series
Thanks. Here's the error message:
ar: creating libfdt/libfdt.a
/root/qmp-unstable/dump.c: In function ‘write_dump_pages’:
/root/qmp-unstable/dump.c:1356:21: error: passing argument 2 of ‘compress2’
from incompatible pointer type [-Werror]
Z_BEST_SPEED) == Z_OK)&& (size_out< s->page_size)) {
^
In file included from /root/qmp-unstable/dump.c:28:0:
/usr/include/zlib.h:1174:21: note: expected ‘uLongf *’ but argument is of type
‘size_t *’
ZEXTERN int ZEXPORT compress2 OF((Bytef *dest, uLongf *destLen,
^
cc1: all warnings being treated as errors
make[1]: *** [dump.o] Error 1
make: *** [subdir-aarch64-softmmu] Error 2
make: *** Waiting for unfinished jobs....
/root/qmp-unstable/dump.c: In function ‘write_dump_pages’:
/root/qmp-unstable/dump.c:1356:21: error: passing argument 2 of ‘compress2’
from incompatible pointer type [-Werror]
Z_BEST_SPEED) == Z_OK)&& (size_out< s->page_size)) {
^
In file included from /root/qmp-unstable/dump.c:28:0:
/usr/include/zlib.h:1174:21: note: expected ‘uLongf *’ but argument is of type
‘size_t *’
ZEXTERN int ZEXPORT compress2 OF((Bytef *dest, uLongf *destLen,
^
cc1: all warnings being treated as errors
make[1]: *** [dump.o] Error 1
make[1]: *** Waiting for unfinished jobs....
make: *** [subdir-alpha-softmmu] Error 2
Hello Luiz,
It seems both zlib and lzo will output the error message because of the
incompatible type. And I have fixed patches and sent them to the qemu list.
P.S.
lzo/snappy will need '--enable-lzo' or '--enable-snappy' at configure.
--
Regards
Qiao Nuohan
