• Red Hat Magazine | Tips and tricks: Why is my system unable to reboot after converting my ext3 partition to a diskdump partition. How can I fix this ? – "This problem occurs and leaves the system in an unbootable state. This is because yaboot tries to to boot from a partition of type 'Linux' (Type 83)." This error does not occur if the partition is labeled as swap (Type 82).
• Red Hat Knowledgebase: How do I use the diskdump utility to capture a vmcore in Red Hat Enterprise Linux 3 and 4? – "The diskdump utility offers the ability to create and collect vmcore (Kernel dumps) on a single system without needing to be connected to a network. Diskdump creates files in an identical format to the netdump core files and can be analyzed with the same tools. Like netdump, diskdump will only work with certain hardware."

 > getfacl file.txt

To modify the ACL on a file:

 > setfacl -m user:rwx file.txt

To recursively change an ACL:

 > setfacl -R -m user:rwx .

To modify the default ACL for a directory:

 > setfacl -d -m user:rwx.

See the getfacl and setfacl man pages for more information.