[Samba] open(2) O_DIRECT on smbmount gives EINVAL
samba at esilo.com
Sun Oct 15 11:59:40 GMT 2006
>>not in the server.
I am aware that we are talking about a client mount and not a samba server. Did
I post to the wrong list? Is this for samba server questions? That is the
second time you mentioned the server although I never mentioned it? Actually in
my setup, there is no samba server. There is a win2k box and a linux box. I am
trying to do directio from the linux box to the win2k box through a smb or cifs
My goal is to have the metadata and data flushed out of the linux machine after
each write/fs_transaction. Whether the target machine on the network, in this
case a win2k box, actually flushes that to disk, is not a requirement. My only
requirement is that the smb or cifs mount on the linux box does not buffer
anything: reads, writes, find_files, mkdirs, etc... Everything is flushed out
to the target.
With that in mind, does the mount.cifs "directio" option meet this requirement.
Does the "directio" option behave/accomplish the same things as open(2)'s
O_DIRECT or O_SYNC? Is buffer alignment required when using mount.cifs's directio?
Jeremy Allison wrote:
> On Sat, Oct 14, 2006 at 11:20:57PM -0400, Andrew Chernow wrote:
>> I tried this but got the same results, EINVAL?
>> mount.cifs //machine/share /cifstest \
>> -o username=xxx,password=xxx,directio,rw,noperm,soft
>> Is the samba client utils, like smbmount and mount.cifs, supposed to
>> support O_DIRECT? There is mention of it in release notes, mostly samba4.
>> Wondering if I need a patch or something.
> It's something that needs to be supported in the client
> redirector code I think, not in the server.
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