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Stefan Hajnoczi
e974bdd134
Introduce a new vendor-specific SCSI command that acts similar to REGISTER AND IGNORE EXISTING KEY but also discards multipathd's state (including /etc/multipath/prkeys). This command will be used on the source after live migration completes successfully. This cleanup step is necessary because multipathd will register the key it has stored when the path comes up again. This is undesirable when the guest has migrated to another host and can interfere with the migration process or the application running inside the guest. Add a qemu-pr-manager protocol feature bit indicating that the new PR_HELPER_CLEANUP command is available. The command has no CDB fields other than OPCODE and the response contains no data aside from the usual result and sense data. Note that the linker needs an explicit libmpathcmd dependency for mpath_disconnect() even though qemu-pr-helper.c already #included the mpath_cmd.h header before. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Link: https://lore.kernel.org/r/20261013181752.1299456-5-stefanha@redhat.com Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>