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scripts: qmp-shell: add transaction subshell
Add a special processing mode to craft transactions. By entering "transaction(" the shell will enter a special mode where each subsequent command will be saved as a transaction instead of executed as an individual command. The transaction can be submitted by entering ")" on a line by itself. Examples: Separate lines: (QEMU) transaction( TRANS> block-dirty-bitmap-add node=drive0 name=bitmap1 TRANS> block-dirty-bitmap-clear node=drive0 name=bitmap0 TRANS> ) With a transaction action included on the first line: (QEMU) transaction( block-dirty-bitmap-add node=drive0 name=bitmap2 TRANS> block-dirty-bitmap-add node=drive0 name=bitmap3 TRANS> ) As a one-liner, with just one transaction action: (QEMU) transaction( block-dirty-bitmap-add node=drive0 name=bitmap0 ) As a side-effect of this patch, blank lines are now parsed as no-ops, regardless of which shell mode you are in. Signed-off-by: John Snow <jsnow@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Tested-by: Kashyap Chamarthy <kchamart@redhat.com> Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
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