09-13-2012
Not a command, no. What guarantee would you have that you caught it at the right instant? You need something more fundamental.
Linux can do so at the filesystem level with
NILFS, a snapshotting filesystem which keeps past versions of files in case you need them. Each snapshot is independently accessible.
It'd be a big space waster for files that change often of course! A huge file that completely changes all the time would take a lot of space to snapshot.
Last edited by Corona688; 09-13-2012 at 02:49 PM..
9 More Discussions You Might Find Interesting
1. AIX
Hi ,
Can you suggest me how to back to back printing in UNIX? Is there any way?
Kindly advise.
Regards
Vijaya Amirtha Raj (3 Replies)
Discussion started by: amirthraj_12
3 Replies
2. IP Networking
Hi every body,
Is it possible to connect two servers Back-to-Back (Point-to-Point) using HBA adapters & using Fiber.
Note it is direct connection & there is no switches between the servers.
I'm concern about using HBA adapters, it is possible or not.
Thanks in advance. :) (3 Replies)
Discussion started by: aldowsary
3 Replies
3. Shell Programming and Scripting
Hi,
I am accepting a string from user. compare this output with the awk output as below...
echo "\n\n\tDay : \c"
read day
awk '{ if($day == $2) { if ($mon == $1) { print "Yes" }}}' syslog.txt
I am getting the follwoing error
awk: Field $() is not correct.
The input line... (5 Replies)
Discussion started by: EmbedUX
5 Replies
4. Programming
Hey Guys
I am trying to implement the malloc function for my OS class and I am having a little trouble with it. I would be really grateful if I could get some hints on this problem.
So I am using a doubly-linked list as my data structure and I have to allocate memory for it (duh...). The... (1 Reply)
Discussion started by: Gambit_b
1 Replies
5. UNIX for Advanced & Expert Users
Hey Guys
Some of my friends have got together and we are trying to write a basic kernel similar to Linux. I am trying to implement the malloc function in C and I am using a doubly linked list as the primary data structure. I need to allocate memory for this link list (duh...) and I don't feel... (2 Replies)
Discussion started by: rbansal2
2 Replies
6. Programming
Hi all,I'm reading <Advanced programming in the UNIX environment>,that book asked the reader to implement a function which has same functions with dup2 without calling fcntl.Could anyone give me a tip?Any help will be appreciated.:) (8 Replies)
Discussion started by: homeboy
8 Replies
7. Linux
Hi
I'm trying to implement CAPWAP protocol for my application.i'm able to configure my server side but i'm getting error at client(WTP) side as IOCTL error.while running the command
#./WTP /mnt/cf/capwap/
: wlan2
Starting WTP...
# WTP Loads... (0 Replies)
Discussion started by: ran789
0 Replies
8. UNIX for Dummies Questions & Answers
Hi everybody,
i've been googling for ages now and gotten kinda desperate... The question, however, might be rather trivial for the experts: What is it exactly, i.e. physically, the POSIX function (for a file) "lseek" does? Does it trigger some kind of synchronization on disk? Is it just for the... (4 Replies)
Discussion started by: Humudituu
4 Replies
9. Programming
I have this code from a programming book:
#include <stdio.h>
#include <string.h>
char buf; /* input line buffer */
char* field; /* fields */
char* unquote( char* );
/* csvgetline: read and parse line, return field count */
/* sample input:... (3 Replies)
Discussion started by: totoro125
3 Replies
LEARN ABOUT CENTOS
yum-fs-snapshot.conf
YUM-FS-SNAPSHOT.CONF(5) File Formats YUM-FS-SNAPSHOT.CONF(5)
NAME
yum-fs-snapshot.conf(5)
SYNOPSIS
yum-fs-snapshot.conf(5) is the configuration file for yum-fs-snapshot(1) Yum plugin for snapshotting your filesystems before running a yum
transaction. By default, this plugin will snapshot all filesystems that it is capable of snapshotting. This includes block-level snap-
shots using LVM snapshots.
FILES
/etc/yum/pluginconf.d/fs-snapshot.conf
FILE FORMAT
yum-fs-snapshot.conf(5) utilizes configuration options in the form of
OPTION=VALUE
OPTION
exclude
This is a space delimited list of the mount points you do not wish to have snapshotted by this plugin.
OPTION
create_snapshots_in_post
This is a boolean value used to control whether snapshots are also created after running the yum transaction.
OPTION - [lvm] section
enabled
This is a boolean value used to control whether LVM snapshots will be created for filesystems built on LVM logical volumes.
OPTION - [lvm] section
lvcreate_size_args
This is the space delimited lvcreate argument list that is used to specify the size of the snapshot LV. Valid lvcreate size options
are -l or -L. If not specified then LVM snapshots will not be created for volumes that are not thinly provisioned.
AUTHOR
Josef Bacik <josef@toxicpanda.com>
Mike Snitzer <msnitzer@fedoraproject.org>
SEE ALSO
yum-fs-snapshot(1)
3 February 2010 YUM-FS-SNAPSHOT.CONF(5)