John L Kohl

US Patent:

7860908, Dec 28, 2010

Filed:

Oct 20, 2005

Appl. No.:

11/254987

Inventors:

John T. Kohl - Arlington MA, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 12/00
G06F 17/30

US Classification:

707822, 707828, 707831

Abstract:

In a subject filesystem, the invention computer method use the filesystem's dentry trees for all file system objects not contained in a corresponding stacking filesystem. The invention method set the process environment to have a reliable inheritance of the stacking filesystem's root context to new processes and uses the subject filesystem's (VFSMNT, dentry) for most lookups. All lookup results are then with respect to the subject filesystem's roots.

US Patent:

20070198540, Aug 23, 2007

Filed:

Feb 1, 2006

Appl. No.:

11/344652

Inventors:

John T. Kohl - Arlington MA, US
Ramachandra N. Pai - Beaverton OR, US

International Classification:

G06F 7/00

US Classification:

707100

Abstract:

A system and method are provided for mitigating propagation of select mounts in a shared mount tree. One or more mounts in the mount tree may be designated as non-bindable. Each non-bindable mount cannot be mirrored to a mount point through a mirror operation of a mount subtree in which the non-bindable mount resides. Similarly, each non-bindable mount prevents a submount residing on the non-bindable mount to be mirrored. However, the non-bindable mount and it's submounts may be mirrored when the entire mount tree is mirrored and attached to a mount point that resides in a no mount tree that acts as a pivot for a new mount tree created through a mirror operation. A mirror of the non-bindable mount maintains the properties of the non-bindable mount.