Lu, Baolu wrote:
Hopefully I can get one of those who actually did the work to post
a blog entry about it. Anyway, the executables and libraries which
need to remain stable during the entire duration of the patching
application and would be affected by the patch operation are copied
into a temporary location, lofs is used to mount them up into the
original location, and then we can patch the originals without
adversely affecting the binaries
How can the originals be accessed while another file system mounting
on its dir? In my understanding, the originals will be covered by the
new mounted file system until it is umounted.
The original root is also loopback mounted into another alternate root
so that it can be operated on.
Dave
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