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dump: Add command interface for kdump-raw formats

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The QMP dump API represents the dump format as an enumeration. Add three
new enumerators, one for each supported kdump compression, each named
"kdump-raw-*".

For the HMP command line, rather than adding a new flag corresponding to
each format, it seems more human-friendly to add a single flag "-R" to
switch the kdump formats to "raw" mode. The choice of "-R" also
correlates nicely to the "makedumpfile -R" option, which would serve to
reassemble a flattened vmcore.

Signed-off-by: Stephen Brennan <stephen.s.brennan@oracle.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
[ Marc-André: replace loff_t with off_t, indent fixes ]
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20230918233233.1431858-4-stephen.s.brennan@oracle.com>
This commit is contained in:
Stephen Brennan
2023-09-18 16:32:33 -07:00
committed by Marc-André Lureau
parent d43a01db28
commit e6549197f7
4 changed files with 76 additions and 11 deletions
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9
hmp-commands.hx
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@ -1085,14 +1085,16 @@ ERST
{
.name = "dump-guest-memory",
.args_type = "paging:-p,detach:-d,windmp:-w,zlib:-z,lzo:-l,snappy:-s,filename:F,begin:l?,length:l?",
.params = "[-p] [-d] [-z|-l|-s|-w] filename [begin length]",
.args_type = "paging:-p,detach:-d,windmp:-w,zlib:-z,lzo:-l,snappy:-s,raw:-R,filename:F,begin:l?,length:l?",
.params = "[-p] [-d] [-z|-l|-s|-w] [-R] filename [begin length]",
.help = "dump guest memory into file 'filename'.\n\t\t\t"
"-p: do paging to get guest's memory mapping.\n\t\t\t"
"-d: return immediately (do not wait for completion).\n\t\t\t"
"-z: dump in kdump-compressed format, with zlib compression.\n\t\t\t"
"-l: dump in kdump-compressed format, with lzo compression.\n\t\t\t"
"-s: dump in kdump-compressed format, with snappy compression.\n\t\t\t"
"-R: when using kdump (-z, -l, -s), use raw rather than makedumpfile-flattened\n\t\t\t"
" format\n\t\t\t"
"-w: dump in Windows crashdump format (can be used instead of ELF-dump converting),\n\t\t\t"
" for Windows x86 and x64 guests with vmcoreinfo driver only.\n\t\t\t"
"begin: the starting physical address.\n\t\t\t"
@ -1115,6 +1117,9 @@ SRST
dump in kdump-compressed format, with lzo compression.
``-s``
dump in kdump-compressed format, with snappy compression.
``-R``
when using kdump (-z, -l, -s), use raw rather than makedumpfile-flattened
format
``-w``
dump in Windows crashdump format (can be used instead of ELF-dump converting),
for Windows x64 guests with vmcoreinfo driver only