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| Both sides previous revision Previous revision | Next revision Both sides next revision | ||
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start [2018/09/20 14:53] Barret Rhoden [Quick Setup Guide] added config options for huge pages / FS_DAX_PMD |
start [2018/09/26 22:47] Robert Elliott |
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| Line 128: | Line 128: | ||
| ndctl create-namespace ties a namespace to a block device or character device: | ndctl create-namespace ties a namespace to a block device or character device: | ||
| - | ^ mode ^ description ^ device path ^ label metadata ^ atomicity ^ filesystems ^ DAX ^ PFN metadata ^ former name ^ | + | ^ mode ^ description ^ device path ^ device type ^ label metadata ^ atomicity ^ filesystems ^ DAX ^ PFN metadata ^ former name ^ |
| - | | raw | raw | /dev/pmemN | no | no | yes | no | no | | | + | | raw | raw | /dev/pmemN | block | no | no | yes | no | no | | |
| - | | sector | sector atomic | /dev/pmemNs | yes | yes | yes | no | no | | | + | | sector | sector atomic | /dev/pmemNs | block | yes | yes | yes | no | no | | |
| - | | fsdax | filesystem DAX | /dev/pmemN | yes | no | yes | yes | yes | memory | | + | | fsdax | filesystem DAX | /dev/pmemN | block | yes | no | yes | yes | yes | memory | |
| - | | devdax | device DAX | /dev/daxN.M | yes | no | no | yes | yes | dax | | + | | devdax | device DAX | /dev/daxN.M | character | yes | no | no | yes | yes | dax | |
| For modes with PFN metadata ("struct page" metadata), overhead is 64 bytes per 4 KiB of persistent memory. | For modes with PFN metadata ("struct page" metadata), overhead is 64 bytes per 4 KiB of persistent memory. | ||
start.txt · Last modified: 2020/06/12 15:58 by Ira Weiny
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