Commit Graph
8 Commits
Author SHA1 Message Date
Andrew Cooper 7bac300b42 tools/migration: Drop IHDR_VERSION constant from libxc and python
Migration v3 is in the process of being introduced, meaning that the code has
to cope with both versions.  Use an explicit 2 for now.

For the verify-stream-v2 and convert-legacy-stream scripts, update text to say
"v2 (or later)".  What matters is the distinction vs legacy streams.

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
2020-05-29 17:33:03 +01:00
Andrew Cooper 321b658847 tools/migration: Formatting and style cleanup
The code has devating from the prevailing style in many ways.  Adjust spacing,
indentation, position of operators, layout of multiline comments, removal of
superfluous comments, constness, trailing commas, and use of unqualified
'unsigned'.

No functional change.

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
2020-01-16 15:16:42 +00:00
Andrew Cooper 50ea2445f4 libxc/migration: Rename TSC_INFO to X86_TSC_INFO
This record is specific to x86, and should have had a prefix to being with.

No functional change.

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
2019-12-24 14:59:04 +00:00
Andrew Cooper 1430c5a8ca tools/python: Python 3 compatibility
convert-legacy-stream is only used for incomming migration from pre Xen 4.7,
and verify-stream-v2 appears to only be used by me during migration
development - it is little surprise that they missed the main converstion
effort in Xen 4.13.

Fix it all up.

Move open_file_or_fd() into a new util.py to avoid duplication, making it a
more generic wrapper around open() or fdopen().

In libxc.py, drop all long() conversion.  Python 2 will DTRT with int => long
promotion, even on 32bit builds.

In convert-legacy-stream, don't pass empty strings to write_record().  Join on
the empty argl will do the right thing.

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Acked-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
2019-12-20 11:19:56 +00:00
Olaf Hering 281962851f tools: handle xl migrate --debug in legacy stream
Doing a 'xl migrate --debug domU host' on xen-4.5 adds a
XC_SAVE_ID_ENABLE_VERIFY_MODE marker, which is not handled.
Since using --debug is valid usage, handle it by logging the fact
instead of aborting the migration.

Signed-off-by: Olaf Hering <olaf@aepfle.de>
Cc: Ian Jackson <ian.jackson@eu.citrix.com>
Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
2016-04-08 14:44:28 +01:00
Andrew Cooper 6b3da2ba3b libxl/save&restore&convert: Switch to new EMULATOR_XENSTORE_DATA records
Read and write "toolstack" information using the new
EMULATOR_XENSTORE_DATA record, and have the conversion script take care
of the old format.

The entire libxc and libxl migration v2 streams are now bitness-neutral
in their records.

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
2015-08-05 10:46:46 +01:00
Andrew Cooper 47801b0451 docs/libxl: Re-specify XENSTORE_DATA as EMULATOR_XENSTORE_DATA
The legacy "toolstack" record as implemented in libxl turns out not to
be 32/64bit safe.  As migration v2 has not shipped yet, take this
opportunity to adjust the specification and fix the incompatibility.

Libxl shall loose all knowledge of the old "toolstack" blob and use this
EMULATOR_XENSTORE_DATA record instead.  Compatibility shall be handled
by the legacy conversion script.

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
2015-08-05 10:46:30 +01:00
Andrew Cooper 74a7c7a928 tools/python: Conversion utility for legacy migration streams
This utility will take a legacy stream as in input, and produce a v2
stream as an output.  It is exec()'d by libxl to provide backwards
compatibility.

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Acked-by: Ian Campbell <Ian.Campbell@citrix.com>
CC: Ian Jackson <Ian.Jackson@eu.citrix.com>
CC: Wei Liu <wei.liu2@citrix.com>
2015-07-15 11:22:53 +01:00