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 telli

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 w

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

2021-03-02 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 off

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

2021-03-02 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 int

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

2021-03-02 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 Ch

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

2021-03-02 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". > > T

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

2021-03-02 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* th

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, Dan

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 correct

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 Chinn

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, Dan

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 th

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 Wil

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 recent

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 Darrick

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 0

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 > > > "E

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, whi

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 dax

Question about the "EXPERIMENTAL" tag for dax in XFS

2021-02-26 Thread ruansy.f...@fujitsu.com
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 dax option, has been existed for a while. It's a bit annoying when using fsdax feature