diff options
Diffstat (limited to 'scripts/analyze-migration.py')
| -rwxr-xr-x | scripts/analyze-migration.py | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/scripts/analyze-migration.py b/scripts/analyze-migration.py index f2457b1dde..fcda11f31d 100755 --- a/scripts/analyze-migration.py +++ b/scripts/analyze-migration.py @@ -65,6 +65,9 @@ class MigrationFile(object): def tell(self): return self.file.tell() + def seek(self, a, b): + return self.file.seek(a, b) + # The VMSD description is at the end of the file, after EOF. Look for # the last NULL byte, then for the beginning brace of JSON. def read_migration_debug_json(self): @@ -272,11 +275,24 @@ class S390StorageAttributes(object): self.section_key = section_key def read(self): + pos = 0 while True: addr_flags = self.file.read64() flags = addr_flags & 0xfff - if (flags & (self.STATTR_FLAG_DONE | self.STATTR_FLAG_EOS)): + + if flags & self.STATTR_FLAG_DONE: + pos = self.file.tell() + continue + elif flags & self.STATTR_FLAG_EOS: return + else: + # No EOS came after DONE, that's OK, but rewind the + # stream because this is not our data. + if pos: + self.file.seek(pos, os.SEEK_SET) + return + raise Exception("Unknown flags %x", flags) + if (flags & self.STATTR_FLAG_ERROR): raise Exception("Error in migration stream") count = self.file.read64() |