Samba and MS Shadow Copy

Stefan (metze) Metzmacher metze at metzemix.de
Wed Aug 6 10:07:35 GMT 2003


At 11:08 06.08.2003 +0200, Stefan (metze) Metzmacher wrote:
>At 10:59 06.08.2003 +0200, Stefan (metze) Metzmacher wrote:
>>At 13:22 04.08.2003 -0400, Ken Cross wrote:
>>>typedef struct
>>>
>>>{
>>>
>>>     uint32      num_volumes;    /* Total number of shadow volumes currently
>>>mounted */
>>>     uint32      num_labels;     /* Number of volume labels in the "labels"
>>>array */
>>>     uint32      data_size;      /* Total bytes being sent back */
>>
>>This is not what I see in the trace you sent to me...
>>It's const 0x98 0x00 0x00 0x00 on the wire
>>for both calls
>>
>>
>>>     smb_ucs2_t  labels[2];      /* Concatenated list of null-terminated 
>>> UCS2
>>>(2-byte) labels */
>>>} SHADOW_COPY_DATA;
>>>
>>>
>>>num_volumes is the number of snapshots available for this volume.
>>>Determining this value is highly dependent on the file system.
>>>
>>>data_size should be 50 * num_volumes, since each label is exactly 50 bytes
>>>long (24 UCS2 characters + 1 UCS2 null terminator).
>>>
>>>If max_data_count == sizeof( SHADOW_COPY_DATA ) == 16, then the handler must
>>>compute num_volumes and data_size, and the other elements must be zero.
>>>Nothing should be returned in labels.
>>
>>the lables field is 0x70 0x00 0x5c 0x00
>>in this case....
>>
>>>If max_data_count > 16, then fill the labels array with UCS2 strings in
>>>*exactly* this format:
>>>
>>>    @GMT-YYYY.MM.DD-HH.MM.SS
>>>
>>>which is the timestamp of the snapshot, e.g., "@GMT-2003.03.03-03.04.04".
>>>Set num_labels to the number of labels provided (should be the same as
>>>num_volumes).
>>
>>
>>and there are extra 6 0x00 bytes at the end
>>
>>Can you send also a trace from a windows client a samba server?
>
>also a trace of the win2k3 server when there are more or less then 3 volumes.
>
>to see if the 6 0x00  extra bytes are constant...
>
>what happens when the amount of label cause the data_count to be greater 
>then max_data_count?
>
>a trace of this would be fine too...
>
>does the win2k3 return NT_STATUS_BUFFER_TOO_SMALL
>
>or does returns paged results....

what is if we have 0 volumes and lables?



metze
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Stefan "metze" Metzmacher <metze at metzemix.de> 




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