Hi, I am debugging the save/restore work in Windows PV Driver, and always hit a problem after restore. after VBD PV driver initialize the backend parameters, the domain0 can read back those parameters correctly, then begin the backend initialization, but i always hit the error in this step. the error information is (error/backend/vbd/40/768/error 1 mapping ring-ref 335 port 5), please referring to the following xenstored-trace.log. what may result in this problem? any help is appreciated. Thanks Annie IN 0x9ba76d0 20081128 14:16:07 WRITE (device/vbd/768/state 1) OUT 0x9ba6aa8 20081128 14:16:07 WATCH_EVENT (/local/domain/40/device/vbd/768/state E14C7210 ) IN 0x9ba6aa8 20081128 14:16:07 READ (/local/domain/40/device/vbd/768/state ) OUT 0x9ba6aa8 20081128 14:16:07 READ (1) OUT 0x9ba76d0 20081128 14:16:07 WRITE (OK ) IN 0x9ba76d0 20081128 14:16:07 READ (control/shutdown ) OUT 0x9ba76d0 20081128 14:16:07 ERROR (ENOENT ) OUT 0x9ba49e0 20081128 14:16:07 TRANSACTION_END (OK ) IN 0x9ba76d0 20081128 14:16:07 WRITE (device/vbd/768/ring-ref 335) OUT 0x9ba76d0 20081128 14:16:07 WRITE (OK ) IN 0x9ba76d0 20081128 14:16:07 WRITE (device/vbd/768/event-channel 5) OUT 0x9ba76d0 20081128 14:16:07 WRITE (OK ) IN 0x9ba76d0 20081128 14:16:07 WRITE (device/vbd/768/state 3) OUT 0x9ba6aa8 20081128 14:16:07 WATCH_EVENT (/local/domain/40/device/vbd/768/state E14C7210 ) IN 0x9ba6aa8 20081128 14:16:07 READ (/local/domain/40/device/vbd/768/state ) OUT 0x9ba6aa8 20081128 14:16:07 READ (3) IN 0x9ba6aa8 20081128 14:16:07 READ (/local/domain/40/device/vbd/768/ring-ref ) OUT 0x9ba6aa8 20081128 14:16:07 READ (335) IN 0x9ba6aa8 20081128 14:16:07 READ (/local/domain/40/device/vbd/768/event-channel ) OUT 0x9ba6aa8 20081128 14:16:07 READ (5) IN 0x9ba6aa8 20081128 14:16:07 READ (/local/domain/40/device/vbd/768/protocol ) OUT 0x9ba6aa8 20081128 14:16:07 ERROR (ENOENT ) OUT 0x9ba76d0 20081128 14:16:07 WRITE (OK ) IN 0x9ba6aa8 20081128 14:16:07 WRITE (error/backend/vbd/40/768/error 1 mapping ring-ref 335 port 5) OUT 0x9ba6aa8 20081128 14:16:07 WRITE (OK ) IN 0x9ba6aa8 20081128 14:16:07 READ (backend/vbd/40/768/state ) OUT 0x9ba6aa8 20081128 14:16:07 READ (2) IN 0x9ba6aa8 20081128 14:16:07 WRITE (backend/vbd/40/768/state 5) OUT 0x9ba6aa8 20081128 14:16:07 WATCH_EVENT (backend/vbd/40/768/state C0673A14 ) OUT 0x9ba6aa8 20081128 14:16:07 WRITE (OK ) IN 0x9ba6aa8 20081128 14:16:07 DIRECTORY (backend/vbd/40/768/state ) OUT 0x9ba6aa8 20081128 14:16:07 DIRECTORY () IN 0x9ba76d0 20081128 14:16:07 WRITE (device/vbd/768/state 4) OUT 0x9ba6aa8 20081128 14:16:07 WATCH_EVENT (/local/domain/40/device/vbd/768/state E14C7210 ) IN 0x9ba6aa8 20081128 14:16:07 READ (/local/domain/40/device/vbd/768/state ) OUT 0x9ba6aa8 20081128 14:16:07 READ (4) IN 0x9ba6aa8 20081128 14:16:07 READ (/local/domain/40/device/vbd/768/ring-ref ) OUT 0x9ba6aa8 20081128 14:16:07 READ (335) IN 0x9ba6aa8 20081128 14:16:07 READ (/local/domain/40/device/vbd/768/event-channel ) OUT 0x9ba6aa8 20081128 14:16:07 READ (5) IN 0x9ba6aa8 20081128 14:16:07 READ (/local/domain/40/device/vbd/768/protocol ) OUT 0x9ba6aa8 20081128 14:16:07 ERROR (ENOENT ) OUT 0x9ba76d0 20081128 14:16:07 WATCH_EVENT (/local/domain/0/backend/vbd/40/768/state 8255819C ) IN 0x9ba6aa8 20081128 14:16:07 WRITE (error/backend/vbd/40/768/error 1 mapping ring-ref 335 port 5) OUT 0x9ba6aa8 20081128 14:16:07 WRITE (OK ) OUT 0x9ba76d0 20081128 14:16:07 WRITE (OK ) _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel