Samba and MS Shadow Copy
Ken Cross
kcross at nssolutions.com
Tue Aug 5 16:53:32 GMT 2003
No problem -- all sounds very reasonable.
I couldn't find any name from MS for this FSCTL function, so I just made one
up. If anyone know a better one, please feel free to use it.
Ken
________________________________
Ken Cross
Network Storage Solutions
Phone 865.675.4070 ext 31
kcross at nssolutions.com
> -----Original Message-----
> From: Stefan (metze) Metzmacher [mailto:metze at metzemix.de]
> Sent: Tuesday, August 05, 2003 12:50 PM
> To: Ken Cross; 'Multiple recipients of list SAMBA-TECHNICAL';
> Jeremy Allison; Alexander Bokovoy
> Subject: Re: Samba and MS Shadow Copy
>
>
> At 13:22 04.08.2003 -0400, Ken Cross wrote:
> >Samba-folk:
> >
> >Microsoft's Shadow Copy is their version of snapshots for
> NTFS. It is
> >standard in Windows Server 2003. Windows Explorer can very
> >conveniently view "Previous Versions" of files and/or
> directories. (To
> >add this feature to Explorer on XP or Win2k SP3 or higher, see
> >http://www.microsoft.com/downloads/details.aspx?FamilyID=e382
358f-33c3-
>4de7-
>acd8-a33ac92d295e)
>
>Some file systems, including ours at Network Storage Solutions, have
>snapshot capability. Adding this support in Samba involves the 3 steps
>described below. (Much of this is extremely vendor-specific, so sample
>code wouldn't mean much on another file system.)
Ken,
would it be ok if I modify your patch a bit?
just make the names unique
inn your patch is FSCTL_GET_SHADOW_DATA and the DEBUG()'s say
FSCTL_GET_SHADOW_VOLUME
the macros are SMB_VFS_GET_SHADOW_DATA and the function pointers are
->getshadowdata...
What name should we use here?
Does Microsoft have defined a FSCTL_* name for this call?(or does anyone
knows this name?)
and the ioctl call should only return NT_STATUS_NOT_IMPLEMENTED when errno
== ENOSYS...
otherwise it should return NT_STATUS_UNSUCCESSFUL
metze
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Stefan "metze" Metzmacher <metze at metzemix.de>
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