Re: atomic write & T10 standards

2013-07-05 Thread Ric Wheeler
ux-scsi-ow...@vger.kernel.org [mailto:linux-scsi- ow...@vger.kernel.org] On Behalf Of Ric Wheeler Sent: Thursday, 04 July, 2013 7:35 AM To: Vladislav Bolkhovitin Cc: Chris Mason; James Bottomley; Martin K. Petersen; linux- s...@vger.kernel.org Subject: Re: atomic write & T10 standards On 07/03/2013 11:18

RE: atomic write & T10 standards

2013-07-05 Thread Elliott, Robert (Server Storage)
> Cc: Chris Mason; James Bottomley; Martin K. Petersen; linux- > s...@vger.kernel.org > Subject: Re: atomic write & T10 standards > > On 07/03/2013 11:18 PM, Vladislav Bolkhovitin wrote: > > Ric Wheeler, on 07/03/2013 11:31 AM wrote: > >>>> Journals are normall

Re: atomic write & T10 standards

2013-07-04 Thread Ric Wheeler
On 07/03/2013 11:18 PM, Vladislav Bolkhovitin wrote: Ric Wheeler, on 07/03/2013 11:31 AM wrote: Journals are normally big (128MB or so?) - I don't think that this is unique to xfs. We're mixing a bunch of concepts here. The filesystems have a lot of different requirements, and atomics are jus

Re: atomic write & T10 standards

2013-07-03 Thread Vladislav Bolkhovitin
Ric Wheeler, on 07/03/2013 11:31 AM wrote: >>> Journals are normally big (128MB or so?) - I don't think that this is >>> unique to xfs. >> We're mixing a bunch of concepts here. The filesystems have a lot of >> different requirements, and atomics are just one small part. >> >> Creating a new file

Re: atomic write & T10 standards

2013-07-03 Thread Ric Wheeler
On 07/03/2013 02:54 PM, Chris Mason wrote: Quoting Ric Wheeler (2013-07-03 14:31:59) On 07/03/2013 11:54 AM, Chris Mason wrote: Quoting Ric Wheeler (2013-07-03 11:42:38) On 07/03/2013 11:37 AM, James Bottomley wrote: On Wed, 2013-07-03 at 11:27 -0400, Ric Wheeler wrote: On 07/03/2013 11:22 A

Re: atomic write & T10 standards

2013-07-03 Thread Chris Mason
Quoting Ric Wheeler (2013-07-03 14:31:59) > On 07/03/2013 11:54 AM, Chris Mason wrote: > > Quoting Ric Wheeler (2013-07-03 11:42:38) > >> On 07/03/2013 11:37 AM, James Bottomley wrote: > >>> On Wed, 2013-07-03 at 11:27 -0400, Ric Wheeler wrote: > On 07/03/2013 11:22 AM, James Bottomley wrote:

Re: atomic write & T10 standards

2013-07-03 Thread Ric Wheeler
On 07/03/2013 11:54 AM, Chris Mason wrote: Quoting Ric Wheeler (2013-07-03 11:42:38) On 07/03/2013 11:37 AM, James Bottomley wrote: On Wed, 2013-07-03 at 11:27 -0400, Ric Wheeler wrote: On 07/03/2013 11:22 AM, James Bottomley wrote: On Wed, 2013-07-03 at 11:04 -0400, Ric Wheeler wrote: Why n

Re: atomic write & T10 standards

2013-07-03 Thread Chris Mason
Quoting Ric Wheeler (2013-07-03 11:42:38) > On 07/03/2013 11:37 AM, James Bottomley wrote: > > On Wed, 2013-07-03 at 11:27 -0400, Ric Wheeler wrote: > >> On 07/03/2013 11:22 AM, James Bottomley wrote: > >>> On Wed, 2013-07-03 at 11:04 -0400, Ric Wheeler wrote: > Why not have the atomic write a

Re: atomic write & T10 standards

2013-07-03 Thread Ric Wheeler
On 07/03/2013 11:37 AM, James Bottomley wrote: On Wed, 2013-07-03 at 11:27 -0400, Ric Wheeler wrote: On 07/03/2013 11:22 AM, James Bottomley wrote: On Wed, 2013-07-03 at 11:04 -0400, Ric Wheeler wrote: Why not have the atomic write actually imply that it is atomic and durable for just that com

Re: atomic write & T10 standards

2013-07-03 Thread James Bottomley
On Wed, 2013-07-03 at 11:27 -0400, Ric Wheeler wrote: > On 07/03/2013 11:22 AM, James Bottomley wrote: > > On Wed, 2013-07-03 at 11:04 -0400, Ric Wheeler wrote: > >> Why not have the atomic write actually imply that it is atomic and durable > >> for > >> just that command? > > I don't understand w

Re: atomic write & T10 standards

2013-07-03 Thread Ric Wheeler
On 07/03/2013 11:22 AM, James Bottomley wrote: On Wed, 2013-07-03 at 11:04 -0400, Ric Wheeler wrote: On 07/03/2013 11:00 AM, James Bottomley wrote: On Wed, 2013-07-03 at 10:56 -0400, Ric Wheeler wrote: On 07/03/2013 10:38 AM, Chris Mason wrote: Quoting Ric Wheeler (2013-07-03 10:34:04) As I

Re: atomic write & T10 standards

2013-07-03 Thread Chris Mason
Quoting Ric Wheeler (2013-07-03 11:04:12) > On 07/03/2013 11:00 AM, James Bottomley wrote: > > On Wed, 2013-07-03 at 10:56 -0400, Ric Wheeler wrote: > >> On 07/03/2013 10:38 AM, Chris Mason wrote: > >>> Quoting Ric Wheeler (2013-07-03 10:34:04) > As I was out walking Skeeter this morning, I wa

Re: atomic write & T10 standards

2013-07-03 Thread James Bottomley
On Wed, 2013-07-03 at 11:04 -0400, Ric Wheeler wrote: > On 07/03/2013 11:00 AM, James Bottomley wrote: > > On Wed, 2013-07-03 at 10:56 -0400, Ric Wheeler wrote: > >> On 07/03/2013 10:38 AM, Chris Mason wrote: > >>> Quoting Ric Wheeler (2013-07-03 10:34:04) > As I was out walking Skeeter this m

atomic write & T10 standards

2013-07-03 Thread Ric Wheeler
On 07/03/2013 11:00 AM, James Bottomley wrote: On Wed, 2013-07-03 at 10:56 -0400, Ric Wheeler wrote: On 07/03/2013 10:38 AM, Chris Mason wrote: Quoting Ric Wheeler (2013-07-03 10:34:04) As I was out walking Skeeter this morning, I was thinking a bit about the new T10 atomic write proposal that