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| Both sides previous revision Previous revision Next revision | Previous revision Next revision Both sides next revision | ||
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start [2018/10/16 18:42] Dan Williams |
start [2020/06/11 20:00] Ira Weiny [Filesystems] |
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| * NDCTL: https://github.com/pmem/ndctl.git | * NDCTL: https://github.com/pmem/ndctl.git | ||
| * NDCTL man pages online: http://pmem.io/ndctl/ | * NDCTL man pages online: http://pmem.io/ndctl/ | ||
| - | * linux-nvdimm Mailing List: https://lists.01.org/mailman/listinfo/linux-nvdimm | + | * linux-nvdimm Mailing List: https://lists.01.org/postorius/lists/linux-nvdimm.lists.01.org |
| * linux-nvdimm Patchwork: https://patchwork.kernel.org/project/linux-nvdimm/list/ | * linux-nvdimm Patchwork: https://patchwork.kernel.org/project/linux-nvdimm/list/ | ||
| Line 76: | Line 76: | ||
| <code> | <code> | ||
| - | CONFIG_BLK_DEV_RAM_DAX=y | + | CONFIG_ZONE_DEVICE=y |
| - | CONFIG_FS_DAX=y | + | |
| - | CONFIG_X86_PMEM_LEGACY=y | + | |
| - | CONFIG_LIBNVDIMM=y | + | |
| - | CONFIG_BLK_DEV_PMEM=m | + | |
| - | CONFIG_ARCH_HAS_PMEM_API=y | + | |
| - | CONFIG_TRANSPARENT_HUGEPAGE=y | + | |
| CONFIG_MEMORY_HOTPLUG=y | CONFIG_MEMORY_HOTPLUG=y | ||
| CONFIG_MEMORY_HOTREMOVE=y | CONFIG_MEMORY_HOTREMOVE=y | ||
| - | CONFIG_ZONE_DEVICE=y | + | CONFIG_TRANSPARENT_HUGEPAGE=y |
| - | CONFIG_FS_DAX_PMD=y | + | CONFIG_ACPI_NFIT=m |
| + | CONFIG_X86_PMEM_LEGACY=m | ||
| + | CONFIG_OF_PMEM=m | ||
| + | CONFIG_LIBNVDIMM=m | ||
| + | CONFIG_BLK_DEV_PMEM=m | ||
| + | CONFIG_BTT=y | ||
| + | CONFIG_NVDIMM_PFN=y | ||
| + | CONFIG_NVDIMM_DAX=y | ||
| + | CONFIG_FS_DAX=y | ||
| + | CONFIG_DAX=y | ||
| + | CONFIG_DEV_DAX=m | ||
| + | CONFIG_DEV_DAX_PMEM=m | ||
| + | CONFIG_DEV_DAX_KMEM=m | ||
| </code> | </code> | ||
| Line 358: | Line 364: | ||
| The persistent name for a pmem namespace is then listed in /etc/fstab like so: | The persistent name for a pmem namespace is then listed in /etc/fstab like so: | ||
| <code> | <code> | ||
| - | /dev/pmem-206dcdfe-69b7-4e86-a01b-f540621ce62e /mnt/pmem xfs defaults,dax 1 2 | + | /dev/disk/by-id/pmem-206dcdfe-69b7-4e86-a01b-f540621ce62e /mnt/pmem xfs defaults,dax 1 2 |
| </code> | </code> | ||
| Line 423: | Line 429: | ||
| <code> | <code> | ||
| $ mkfs.ext4 -F /dev/pmem0p1 | $ mkfs.ext4 -F /dev/pmem0p1 | ||
| - | $ mkfs.xfs -f /dev/pmem0p2 | + | $ mkfs.xfs -f -m reflink=0 /dev/pmem0p2 |
| $ mkfs.btrfs -f /dev/pmem0p3 | $ mkfs.btrfs -f /dev/pmem0p3 | ||
| - | $ mount -o dax /dev/pmem0p1 /mnt/ext4-pmem0 | + | $ mount [dax_mount_options] /dev/pmem0p1 /mnt/ext4-pmem0 |
| - | $ mount -o dax /dev/pmem0p2 /mnt/xfs-pmem0 | + | $ mount [dax_mount_options] /dev/pmem0p2 /mnt/xfs-pmem0 |
| $ mount /dev/pmem0p3 /mnt/btrfs-pmem0 | $ mount /dev/pmem0p3 /mnt/btrfs-pmem0 | ||
| Line 448: | Line 454: | ||
| /dev/pmem0p3 4.3G 17M 4.1G 1% /mnt/btrfs-pmem0 | /dev/pmem0p3 4.3G 17M 4.1G 1% /mnt/btrfs-pmem0 | ||
| </code> | </code> | ||
| + | |||
| + | Where **[dax_mount_options]** depends on the kernel support you have and the desired behavior. **For kernel version less than 5.8 the legacy '-o dax' option must be used.** In 5.8 new mount options were introduced. See [[fs_mount_options|fs_mount_options]] for details. | ||
| Check the kernel log to ensure the DAX mount option was honored; mount does not print this information. Example failures: | Check the kernel log to ensure the DAX mount option was honored; mount does not print this information. Example failures: | ||
start.txt · Last modified: 2020/06/12 15:58 by Ira Weiny
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