mkfs and forcemkfs Command Reference

Use mkfs and forcemkfs to format the OMS uber file placed in a PMEM DAX mount point.

Syntax

mkfs PMEM_device blksz
forcemkfs PMEM_device blksz

In this example, PMEM_device is the uber file.

Both mkfs and forcemks accept an optional block size blksz argument. Currently, 4 KB is the only supported block size. mkfs and forcemkfs will not format an uber file that is mounted as an OMS file system.

Usage Notes

The uber file size must be an exact multiple of 2 MB. mkfs checks if the uber file includes a preexisting OMS file system. If mkfs finds a preexisting OMS file system, mkfs will print an error.

forcemkfs does not check for a preexisting OMS file system in the uber file and proceeds with laying out a new OMS file system in the uber file.

Caution:

After you run forcemkfs, the data in the uber file cannot be restored.

Parent topic: Oracle Memory Speed CLI Commands