LinuxQuestions.org
Review your favorite Linux distribution.
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Software
User Name
Password
Linux - Software This forum is for Software issues.
Having a problem installing a new program? Want to know which application is best for the job? Post your question in this forum.

Notices

Reply
 
Search this Thread
Old 08-18-2003, 10:19 PM   #1
tgardner
LQ Newbie
 
Registered: Mar 2003
Posts: 17

Rep: Reputation: 0
dd command for backups


I'm using dd to make backup images using PCMCIA based firewire or USB 2.0 cards and an external hard drive. I was wondering if there is a way to optimize my process to increase speed. Right now the command that I'm using is dd if=/dev/hda of=/mnt/sda1/name bs=2M to backup an entire hard drive. Can I make it faster? Maybe enabling dma? Any idea is helpful.
 
Old 08-19-2003, 04:43 AM   #2
jonas_larson
Member
 
Registered: Jul 2003
Location: Stockholm, Sweden
Distribution: RH9
Posts: 37

Rep: Reputation: 15
Quote:
dd if=/dev/hda of=/mnt/sda1/name bs=2M
Have you tried with a smaller blocksize? 2MB seems a bit large to me...

(Don't know if it works...)

Otherwise I wouldn't use DD for normal backups since it is a block-level backup and it takes all the blocks on your device even if they are "filled" with data or not...

Maybe you should try something else? (like tar...)


Regards

Jonas
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Help with backups??? graystarr Red Hat 2 05-04-2005 06:29 PM
backups shelbyg75 Red Hat 3 09-24-2004 06:16 PM
How "low-level" is the dd-command? (Backups) JZL240I-U Linux - Software 11 05-28-2004 11:30 AM
security for backups (tar command) wedgeworth Linux - Software 1 03-18-2004 12:00 PM
backups storkiam Linux - Newbie 0 12-07-2001 03:35 PM


All times are GMT -5. The time now is 01:37 PM.

Main Menu
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
identi.ca: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration