[cs615asa] Query..!!

[Jan Schaumann]

Gaurav Sharma <gsharma1 at stevens.edu> wrote:
 
> First, I was trying to understand what  'zfs snapshot -r' command does in
> solaris.

Filesystem snapshots are a copy of all the data of the filesystem at
that point in time, often for the purpose of backups.  We will discuss
them in more details in lecture 06.

A memory snapshot, often also referred to as a "core dump" (of either a
process or the kernel) is a full copy of all the contents of the memory
at the given point in time.  For an individual process, it just contains
the information and data from that processes's image; for the kernel, it
contains the information and data from so-called "kernel space".

The core(5) manual page on linux-lab is a good point to read up on; a
lot of the related information can also often be found in the /proc
filesystem or using the strace(1)/ktrace(1)/dtrace(1) commands
(depending on your unix flavor).

-Jan