Re: Question about the "EXPERIMENTAL" tag for dax in XFS

2021-03-04 Thread Darrick J. Wong
On Tue, Mar 02, 2021 at 09:49:30AM -0800, Dan Williams wrote: > On Mon, Mar 1, 2021 at 11:57 PM Dave Chinner wrote: > > > > On Mon, Mar 01, 2021 at 09:41:02PM -0800, Dan Williams wrote: > > > On Mon, Mar 1, 2021 at 7:28 PM Darrick J. Wong wrote: > > > > > > I really don't see you seem to be

Re: Question about the "EXPERIMENTAL" tag for dax in XFS

2021-03-02 Thread Dan Williams
On Mon, Mar 1, 2021 at 11:57 PM Dave Chinner wrote: > > On Mon, Mar 01, 2021 at 09:41:02PM -0800, Dan Williams wrote: > > On Mon, Mar 1, 2021 at 7:28 PM Darrick J. Wong wrote: > > > > > I really don't see you seem to be telling us that invalidation is an > > > > > either/or choice. There's more

Re: Question about the "EXPERIMENTAL" tag for dax in XFS

2021-03-01 Thread Dave Chinner
On Mon, Mar 01, 2021 at 09:41:02PM -0800, Dan Williams wrote: > On Mon, Mar 1, 2021 at 7:28 PM Darrick J. Wong wrote: > > > > I really don't see you seem to be telling us that invalidation is an > > > > either/or choice. There's more ways to convert physical block > > > > address -> inode file

Re: Question about the "EXPERIMENTAL" tag for dax in XFS

2021-03-01 Thread Dan Williams
On Mon, Mar 1, 2021 at 9:38 PM Dave Chinner wrote: > > On Mon, Mar 01, 2021 at 07:33:28PM -0800, Dan Williams wrote: > > On Mon, Mar 1, 2021 at 6:42 PM Dave Chinner wrote: > > [..] > > > We do not need a DAX specific mechanism to tell us "DAX device > > > gone", we need a generic block device

Re: Question about the "EXPERIMENTAL" tag for dax in XFS

2021-03-01 Thread Dan Williams
On Mon, Mar 1, 2021 at 7:28 PM Darrick J. Wong wrote: > > On Mon, Mar 01, 2021 at 12:55:53PM -0800, Dan Williams wrote: > > On Sun, Feb 28, 2021 at 2:39 PM Dave Chinner wrote: > > > > > > On Sat, Feb 27, 2021 at 03:40:24PM -0800, Dan Williams wrote: > > > > On Sat, Feb 27, 2021 at 2:36 PM Dave

Re: Question about the "EXPERIMENTAL" tag for dax in XFS

2021-03-01 Thread Dave Chinner
On Mon, Mar 01, 2021 at 07:33:28PM -0800, Dan Williams wrote: > On Mon, Mar 1, 2021 at 6:42 PM Dave Chinner wrote: > [..] > > We do not need a DAX specific mechanism to tell us "DAX device > > gone", we need a generic block device interface that tells us "range > > of block device is gone". > >

Re: Question about the "EXPERIMENTAL" tag for dax in XFS

2021-03-01 Thread Dan Williams
On Mon, Mar 1, 2021 at 6:42 PM Dave Chinner wrote: [..] > We do not need a DAX specific mechanism to tell us "DAX device > gone", we need a generic block device interface that tells us "range > of block device is gone". This is the crux of the disagreement. The block_device is going away *and*

Re: Question about the "EXPERIMENTAL" tag for dax in XFS

2021-03-01 Thread Darrick J. Wong
On Mon, Mar 01, 2021 at 12:55:53PM -0800, Dan Williams wrote: > On Sun, Feb 28, 2021 at 2:39 PM Dave Chinner wrote: > > > > On Sat, Feb 27, 2021 at 03:40:24PM -0800, Dan Williams wrote: > > > On Sat, Feb 27, 2021 at 2:36 PM Dave Chinner wrote: > > > > On Fri, Feb 26, 2021 at 02:41:34PM -0800,

Re: Question about the "EXPERIMENTAL" tag for dax in XFS

2021-03-01 Thread Dave Chinner
On Mon, Mar 01, 2021 at 04:32:36PM -0800, Dan Williams wrote: > On Mon, Mar 1, 2021 at 2:47 PM Dave Chinner wrote: > > Now we have the filesytem people providing a mechanism for the pmem > > devices to tell the filesystems about physical device failures so > > they can handle such failures

Re: Question about the "EXPERIMENTAL" tag for dax in XFS

2021-03-01 Thread Dan Williams
On Mon, Mar 1, 2021 at 2:47 PM Dave Chinner wrote: > > On Mon, Mar 01, 2021 at 12:55:53PM -0800, Dan Williams wrote: > > On Sun, Feb 28, 2021 at 2:39 PM Dave Chinner wrote: > > > > > > On Sat, Feb 27, 2021 at 03:40:24PM -0800, Dan Williams wrote: > > > > On Sat, Feb 27, 2021 at 2:36 PM Dave

Re: Question about the "EXPERIMENTAL" tag for dax in XFS

2021-03-01 Thread Dave Chinner
On Mon, Mar 01, 2021 at 12:55:53PM -0800, Dan Williams wrote: > On Sun, Feb 28, 2021 at 2:39 PM Dave Chinner wrote: > > > > On Sat, Feb 27, 2021 at 03:40:24PM -0800, Dan Williams wrote: > > > On Sat, Feb 27, 2021 at 2:36 PM Dave Chinner wrote: > > > > On Fri, Feb 26, 2021 at 02:41:34PM -0800,

Re: Question about the "EXPERIMENTAL" tag for dax in XFS

2021-03-01 Thread Dan Williams
On Sun, Feb 28, 2021 at 11:27 PM Yasunori Goto wrote: > > Hello, Dan-san, > > On 2021/02/27 4:24, Dan Williams wrote: > > On Fri, Feb 26, 2021 at 11:05 AM Darrick J. Wong wrote: > >> > >> On Fri, Feb 26, 2021 at 09:45:45AM +, ruansy.f...@fujitsu.com wrote: > >>> Hi, guys > >>> > >>> Beside

Re: Question about the "EXPERIMENTAL" tag for dax in XFS

2021-03-01 Thread Dan Williams
On Sun, Feb 28, 2021 at 2:39 PM Dave Chinner wrote: > > On Sat, Feb 27, 2021 at 03:40:24PM -0800, Dan Williams wrote: > > On Sat, Feb 27, 2021 at 2:36 PM Dave Chinner wrote: > > > On Fri, Feb 26, 2021 at 02:41:34PM -0800, Dan Williams wrote: > > > > On Fri, Feb 26, 2021 at 1:28 PM Dave Chinner

Re: Question about the "EXPERIMENTAL" tag for dax in XFS

2021-02-28 Thread Yasunori Goto
Hello, Dan-san, On 2021/02/27 4:24, Dan Williams wrote: On Fri, Feb 26, 2021 at 11:05 AM Darrick J. Wong wrote: On Fri, Feb 26, 2021 at 09:45:45AM +, ruansy.f...@fujitsu.com wrote: Hi, guys Beside this patchset, I'd like to confirm something about the "EXPERIMENTAL" tag for dax in XFS.

Re: Question about the "EXPERIMENTAL" tag for dax in XFS

2021-02-28 Thread Dave Chinner
On Sat, Feb 27, 2021 at 03:40:24PM -0800, Dan Williams wrote: > On Sat, Feb 27, 2021 at 2:36 PM Dave Chinner wrote: > > On Fri, Feb 26, 2021 at 02:41:34PM -0800, Dan Williams wrote: > > > On Fri, Feb 26, 2021 at 1:28 PM Dave Chinner wrote: > > > > On Fri, Feb 26, 2021 at 12:59:53PM -0800, Dan

Re: Question about the "EXPERIMENTAL" tag for dax in XFS

2021-02-27 Thread Dan Williams
On Sat, Feb 27, 2021 at 2:36 PM Dave Chinner wrote: > > On Fri, Feb 26, 2021 at 02:41:34PM -0800, Dan Williams wrote: > > On Fri, Feb 26, 2021 at 1:28 PM Dave Chinner wrote: > > > On Fri, Feb 26, 2021 at 12:59:53PM -0800, Dan Williams wrote: > > > > On Fri, Feb 26, 2021 at 12:51 PM Dave Chinner

Re: Question about the "EXPERIMENTAL" tag for dax in XFS

2021-02-27 Thread Dave Chinner
On Fri, Feb 26, 2021 at 02:41:34PM -0800, Dan Williams wrote: > On Fri, Feb 26, 2021 at 1:28 PM Dave Chinner wrote: > > On Fri, Feb 26, 2021 at 12:59:53PM -0800, Dan Williams wrote: > > > On Fri, Feb 26, 2021 at 12:51 PM Dave Chinner wrote: > > > > > My immediate concern is the issue Jason

Re: Question about the "EXPERIMENTAL" tag for dax in XFS

2021-02-26 Thread Dan Williams
On Fri, Feb 26, 2021 at 1:28 PM Dave Chinner wrote: > > On Fri, Feb 26, 2021 at 12:59:53PM -0800, Dan Williams wrote: > > On Fri, Feb 26, 2021 at 12:51 PM Dave Chinner wrote: > > > > > > On Fri, Feb 26, 2021 at 11:24:53AM -0800, Dan Williams wrote: > > > > On Fri, Feb 26, 2021 at 11:05 AM

Re: Question about the "EXPERIMENTAL" tag for dax in XFS

2021-02-26 Thread Dave Chinner
On Fri, Feb 26, 2021 at 12:59:53PM -0800, Dan Williams wrote: > On Fri, Feb 26, 2021 at 12:51 PM Dave Chinner wrote: > > > > On Fri, Feb 26, 2021 at 11:24:53AM -0800, Dan Williams wrote: > > > On Fri, Feb 26, 2021 at 11:05 AM Darrick J. Wong > > > wrote: > > > > > > > > On Fri, Feb 26, 2021 at

Re: Question about the "EXPERIMENTAL" tag for dax in XFS

2021-02-26 Thread Dan Williams
On Fri, Feb 26, 2021 at 12:51 PM Dave Chinner wrote: > > On Fri, Feb 26, 2021 at 11:24:53AM -0800, Dan Williams wrote: > > On Fri, Feb 26, 2021 at 11:05 AM Darrick J. Wong wrote: > > > > > > On Fri, Feb 26, 2021 at 09:45:45AM +, ruansy.f...@fujitsu.com wrote: > > > > Hi, guys > > > > > > > >

Re: Question about the "EXPERIMENTAL" tag for dax in XFS

2021-02-26 Thread Dave Chinner
On Fri, Feb 26, 2021 at 11:24:53AM -0800, Dan Williams wrote: > On Fri, Feb 26, 2021 at 11:05 AM Darrick J. Wong wrote: > > > > On Fri, Feb 26, 2021 at 09:45:45AM +, ruansy.f...@fujitsu.com wrote: > > > Hi, guys > > > > > > Beside this patchset, I'd like to confirm something about the > > >

Re: Question about the "EXPERIMENTAL" tag for dax in XFS

2021-02-26 Thread Dan Williams
On Fri, Feb 26, 2021 at 11:05 AM Darrick J. Wong wrote: > > On Fri, Feb 26, 2021 at 09:45:45AM +, ruansy.f...@fujitsu.com wrote: > > Hi, guys > > > > Beside this patchset, I'd like to confirm something about the > > "EXPERIMENTAL" tag for dax in XFS. > > > > In XFS, the "EXPERIMENTAL" tag,

Re: Question about the "EXPERIMENTAL" tag for dax in XFS

2021-02-26 Thread Darrick J. Wong
On Fri, Feb 26, 2021 at 09:45:45AM +, ruansy.f...@fujitsu.com wrote: > Hi, guys > > Beside this patchset, I'd like to confirm something about the > "EXPERIMENTAL" tag for dax in XFS. > > In XFS, the "EXPERIMENTAL" tag, which is reported in waring message > when we mount a pmem device with