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| author | qiaonuohan <qiaonuohan@cn.fujitsu.com> | 2014-02-18 14:11:36 +0800 |
|---|---|---|
| committer | Luiz Capitulino <lcapitulino@redhat.com> | 2014-02-28 11:52:03 -0500 |
| commit | b53ccc30c40df52d192e469a86c188a8649c6df3 (patch) | |
| tree | 65dc01ecc94511c31e184b65dd30280345573659 /qmp-commands.hx | |
| parent | d12f57ec6640d36e380367a0ab6ab9f3f29b6d51 (diff) | |
| download | qemu-b53ccc30c40df52d192e469a86c188a8649c6df3.tar.gz | |
dump: make kdump-compressed format available for 'dump-guest-memory'
Make monitor command 'dump-guest-memory' be able to dump in kdump-compressed
format. The command's usage:
dump [-p] protocol [begin] [length] [format]
'format' is used to specified the format of vmcore and can be:
1. 'elf': ELF format, without compression
2. 'kdump-zlib': kdump-compressed format, with zlib-compressed
3. 'kdump-lzo': kdump-compressed format, with lzo-compressed
4. 'kdump-snappy': kdump-compressed format, with snappy-compressed
Without 'format' being set, it is same as 'elf'. And if non-elf format is
specified, paging and filter is not allowed.
Note:
1. The kdump-compressed format is readable only with the crash utility and
makedumpfile, and it can be smaller than the ELF format because of the
compression support.
2. The kdump-compressed format is the 6th edition.
Signed-off-by: Qiao Nuohan <qiaonuohan@cn.fujitsu.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Diffstat (limited to 'qmp-commands.hx')
| -rw-r--r-- | qmp-commands.hx | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/qmp-commands.hx b/qmp-commands.hx index 8a0e8320c6..8da11acd8d 100644 --- a/qmp-commands.hx +++ b/qmp-commands.hx @@ -791,8 +791,8 @@ EQMP { .name = "dump-guest-memory", - .args_type = "paging:b,protocol:s,begin:i?,end:i?", - .params = "-p protocol [begin] [length]", + .args_type = "paging:b,protocol:s,begin:i?,end:i?,format:s?", + .params = "-p protocol [begin] [length] [format]", .help = "dump guest memory to file", .user_print = monitor_user_noop, .mhandler.cmd_new = qmp_marshal_input_dump_guest_memory, @@ -813,6 +813,9 @@ Arguments: with length together (json-int) - "length": the memory size, in bytes. It's optional, and should be specified with begin together (json-int) +- "format": the format of guest memory dump. It's optional, and can be + elf|kdump-zlib|kdump-lzo|kdump-snappy, but non-elf formats will + conflict with paging and filter, ie. begin and length (json-string) Example: |