Hi All, I am trying to analyze the OSC-OST communication by putting some prints in the code. Basically I want to print the data that is sent by OSC and received by OST. But I am not able to print the correct, may be because of I am not printing the correct buffers. Please correct me in the following approach which I have taken.
On the OST side, whenever the OST_WRITE request comes, following code path is taken ost_brw_write() -- target_bulk_io() -- -- ptlrpc_start_bulk_transfer() -- -- -- LNetGet() In the ptlrpc_start_bulk_transfer(), the "desc" parameter contains the pages and that is filled into the "MD". I assume if I print those pages at this point (before calling LNetGet()), I will not get the data. Once the LNetGet() is called, the GET request will be served by lower layer and lnet_finalize() will be invoked as a call back routine to notify that the operation is complete. In "lnet_finalize()", I am filtering the "msg" (passed in as parameter) with type LNET_MSG_GET to pin point the correct "msg". This struct "msg" will contain the "lnet_libmd_t" type of MD which will have the kiov as well as "start" buffer. If I print that buffer, still the data is garbage. I would appreciate any help on this issue. Thanks, J _______________________________________________ Lustre-discuss mailing list [email protected] http://lists.lustre.org/mailman/listinfo/lustre-discuss
