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Groups > linux.kernel > #1297808
| From | Christoph Hellwig <hch@infradead.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: A blocksize problem about dax and ext4 |
| Date | 2015-12-24 11:20 +0100 |
| Message-ID | <qJba2-5to-17@gated-at.bofh.it> (permalink) |
| References | (3 earlier) <qJ1DK-83A-57@gated-at.bofh.it> <qJ2q6-8kk-13@gated-at.bofh.it> <qJ2q6-8kk-11@gated-at.bofh.it> <qJ48x-WX-7@gated-at.bofh.it> <qJ48x-WX-5@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Thu, Dec 24, 2015 at 02:47:07AM +0000, Elliott, Robert (Persistent Memory) wrote: > > Did you mean that I should make the blocksize bigger until the mount > > command tell me that dax is enabled? > > To really use DAX, the filesystem block size must match the > system CPU's page size, which is probably 4096 bytes. No, it doesn't. File you use for DAX must be aligne at page size granularity. For XFS you could do this with the per-inode extent size hint for example even if the overall block size is smaller. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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RE: A blocksize problem about dax and ext4 "Elliott, Robert (Persistent Memory)" <elliott@hpe.com> - 2015-12-23 22:20 +0100
Re: A blocksize problem about dax and ext4 Dave Chinner <david@fromorbit.com> - 2015-12-24 01:10 +0100
Re: A blocksize problem about dax and ext4 Dan Williams <dan.j.williams@intel.com> - 2015-12-24 02:00 +0100
RE: A blocksize problem about dax and ext4 "Elliott, Robert (Persistent Memory)" <elliott@hpe.com> - 2015-12-24 03:50 +0100
Re: A blocksize problem about dax and ext4 Christoph Hellwig <hch@infradead.org> - 2015-12-24 11:20 +0100
RE: A blocksize problem about dax and ext4 "Elliott, Robert (Persistent Memory)" <elliott@hpe.com> - 2015-12-24 13:30 +0100
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