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The VxFS commands for manipulating extent attributes are setext and getext; they allow the user to set up files with a given set of extent attributes or view any attributes that are already associated with a file.
See the setext(1) and getext(1) manual pages.
The VxFS-specific commands vxdump, vxrestore, mv_vxfs, cp_vxfs, and cpio_vxfs preserve extent attributes when backing up, restoring, moving, or copying files. Make sure to modify your PATH when using the VxFS versions of mv, cp, and cpio.
Most of these commands include a command line option (-e) for maintaining extent attributes on files. This option specifies dealing with a VxFS file that has extent attribute information including reserved space, a fixed extent size, and extent alignment. The extent attribute information may be lost if the destination file system does not support extent attributes, has a different block size than the source file system, or lacks free extents appropriate to satisfy the extent attribute requirements.
The -e option takes any of the following keywords as an argument:
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Issues a warning message if extent attribute information cannot be maintained (the default) |
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Fails the copy if extent attribute information cannot be maintained |
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