Ubuntu :: What Can Use For Backups That Is Faster Then Rsync?
May 9, 2010
I am currently backing up my data but find that it takes way to long to do a rsync, it takes forever to just find the differences and transfer them.Out of 3 separate rsyncs the main one that is slow is my www.skins.be mirror directory which is 41GB and has 392,200 files, sorted into multiple directories. Which grows by around 100 every couple days.I think that something that would be able to track changes by inotify time on directories will speed it up since Picasa sure finds the changes fast when I open it and it is tracking over 26,200 pictures. I just don't know of a backup solution that does that.
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Nov 12, 2009
How do you get Rsync to do incremental backups rather than full backups? At the moment I have a script that will create a backup folder (if it doesnt already exist) then copy the source files into the backup directory with the command
rsync $VERBOSE --exclude=$TARGET/ $EXCLUDE --exclude '/Ls-wtgl1c8/**' -rt --delete $source/ $TARGET/$source/ >> $LOG_FILE
Target is where the files will be backed up to Sources is the dir(s) to be backed up Exclude files is the list of files not to backup
log file is where the output will be saved to. At the moment it only does full backups, but I would only like to do incremental, how would this be achieved? Am I missing out an option in the Rsync that is required.
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Dec 3, 2010
I often have to transfer huge data over our LAN from one computer to another. The size of the files varies and can be somewhere from 2 GB to 50GB or more! The only accepted connection protocol between machines are ssh; and rsync and scp are the only options available for copying over network (unison is not installed). I usually use rsync with "-z" option to copy over network. if "rsync -z" is faster than "scp" for data transfer?
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Jan 21, 2010
I am using rsync to backup dirs on my ubuntu server onto a NAS (which is mounted onto the filesystem), but the problem is that it is constantly doing full backups rather than doing incrementals and I am not really sure why. After doing a bit of expermienting with the script I noticed that if I just backed up a home dir (/home/user) the incremental backups work fine. If however I was to back up a dir like (/home/domain/user) it always does full backups.I have tried various different scripts but still the same end result. The latest script is a variation on the a script found on the samba rsync examples webpage, see below...
#!/bin/bash
# rsyncbu.sh -- backup to nas using rsync
# This script backups files listed in BDIR to the BSERVER. The verbose output along with the date is listed in the LOG_FILE specified
# verbose output
[code]....
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Apr 27, 2011
There are multiple servers to be backed up. Different access rights exist in each server. There are two backup servers with plenty of disk space, one local, and one offsite. The local one feeds to the offsite one. The rsync command is being used to make a replica of backed up data. Deleted data is also being archived. There are two methods that have been considered: One is to have the individual servers run rsync which logs in to the backup server to push data. Two is to have the backup server run rsync which logs in to each individual server to pull data. Because system data is involved and meta information (like owning user) must be stored, root is required to access the data as well as to store it. That means everything runs as root both ends. So method one was quickly dismissed because each server would effectively have rights to access ALL the data on the backup server since it logs into the backup server as root. The security containment here involves different groups using different servers, and they need to be isolated from each other.
But even method two involves some risks that are a concern. This means one machine has access rights to every server. If the backup server were compromised, every machine could be compromised.What I'd like to find is some way to allow backups to be run without either machine granting root access to the other, while still running as root, or something equivalent, that allows accessing all data and storing all metadata. So I was looking at setting up an rsync daemon on each individual server (running as root so it can access what it is specified to access), and running an rsync client on the backup server (as root so it can store metadata). This opens network access issues. Any user on the network can connect to the rsync daemon. So password protection is needed. But this communication is also not encrypted, which exposes the password and the data should the network be sniffed.
So now I'm thinking about a non-root ssh login between machines. The backup server would login to a non-privileged user on each individual server and set up a secure forwarding channel to the rsync daemon. Is this the best that can be done? Is there a way to run rsync via SSL with key verification so it can all be done together? I'd like to have the rsync daemons configured to always talk SSL, and always verify the client's key against a list of authorized keys, and likewise the client verify the server's key against the known public key for that server.
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Jan 29, 2010
Can I use rsync for incremental backups of the running linux server?
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May 9, 2011
So I am using rsync (3.0.7 on MAC OSX) to backup one hard drive to a folder on another one. The is USB drive to USB drive and I have done the initial backup from one drive to a new formatted other drive with the following command:
Code:
rsync -avX --progress /Volumes/Source /Volumes/Destination
This all appears to be going smoothly as I type. I am going to write a script to do subsequent backups in the
[code]....
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Apr 5, 2011
I am backing up my debian server with rsnapshot which actually uses rsync to perform the backup. The backups are located in an external storage of size 1.4T .
[code]....
I tried to understand what this error message means and i founde that error code 12 : 12 Error in rsync protocol data stream I understand that when rsync find that a file on the target was changed , it will send only the block/blocks that contain the changes and in the destination rsync will create new file and not update the old one (new inod...) . I want to know if this error i get is due to full disk or perhaps it is some other factor
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Sep 30, 2010
I need to login as root, or at least get root privileges, in a cron triggered backup run. The straight way to do this would be the backup server making an ssh connection to the server to be backed up (this way because I want to avoid many servers being backed up in parallel and the backup server itself would be managing this diversity), via the rsync command which would be performing the backup's synchronization step.
I'm looking for alternatives to this in some form. I'd like to disallow direct root login to my ssh port (not 22One idea I have is to have the backup server initiate an ssh login as a non-root user, to either the actual source server, or to a server that can reach the source server ... and set up port forwarding. Over the forwarded port, then initiate the rsync that logs in as root via another port that allows direct root, but cannot be reached from the internet at all (because the border firewall doesn't include this port as allowed in).FYI, these logins will be using ssh keys, not passwords. I do need to keep ownership metadata for files being backed up, so this is why I am using root. Also, rsync is needed to get the incremental updates to keep bandwidth usage lower (otherwise I could just transfer a tarball each day).Anyone have any other ideas or comments, for security issues, based on experience doing things like this (backups, routine data replication, etc)?
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Jul 13, 2011
I am using rsync for incremental backups. I am backing up to a second hard drive on my computer. When I check the individual backup directories (backup.0 through backup.4) with du -hs they each show 12G; when I check the parent directory squeeze it shows 15G. Over 4 backups I have added 3G. I haven't made very much for changes to directories I'm backing up and am using hard links. I have included some info below.
Quote:
Backup script:
#!/bin/bash
mount /mnt/backup
cd /mnt/backup/squeeze/
rm -rf backup.7
[code]....
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Dec 2, 2010
With the --backup and --backup-dir= options on rsync, I can tell it another tree where to put files that are deleted or replaced. I'm hoping it fills out the tree with a replica of the original directory paths (at least for the files put there) or else it's a show stopper. What I'm wanting to find out applies when I'm restoring files. Assuming each time I run rsync (once a day) I make a new directory tree (named by the date) for the backup directory. For each file name/path in the tree, I would start with whatever is in the main tree (the rsync target) and work through the incremental trees going backwards until I reach the date of interest to restore to. If along the way I encounter a file in an incremental, I would replace the previous file at that path with this next one. So by the time I get back to a given date, I should have the version of the file which was present at that date. Do this for each file in the tree and it should be a full restore.
But ... and this is the hard part, it seems. What about files that did not exist at the intended restore date, but do exist (were created) on a date after the intended restore date. What I'd want for a correct restore would be for such files to be absent in the restored tree (just as they were absent in the source tree on that date). How can such a restore be done to correctly exclude these files? Wouldn't rsync have to store some kind of sentinel that indicates that on dates prior, the file did not exist. I suspect someone might suggest I just make a complete hard linked replica tree for each date, and this way absent files will clearly be absent. I can assure you this is completely impractical because I have actually done this before. I ended up with backup filesystems that have so many directories and nodes that it could take over a day, maybe even days, to just do something like "du -s" on it. I'm intending to keep daily changes for at least a couple years, if not more. So that means the 40 million plus files would be multiplied by over 700, making programs like "du -s" have to check over 28 BILLION file names (and that's assuming the number of files does not grow over the next two years).
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Oct 22, 2010
I use openvpn to connect otherwise isolated machines, and use samba to share filesystems across the vpn, which works just fine.But I recently discovered that copying files using rsync -e ssh is so much faster than copying from a mounted filesystem - like about 5 times faster.I've got comp-lzo enabled in both server and the client, at least I think I have, the directive is there in both the server.conf and the client.conf files, but how do I check that it's active?Does anyone know if I can make openvpn behave more like rsync, because copying is easier than rsyncing?
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Oct 6, 2010
I'm trying to set up rsync backups on my ReadyNAS and I'm getting the following error: ERROR: The remote path must start with a module name not a / This error is accompanied by the following information:
[Code]...
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Mar 20, 2010
I've been using dump/restore for backups, for quite some time. It's worked fine, but the process of recovering from a HD failure takes too long. What with eSATA and external drive docks, what I'd really like is to use rsync to maintain a current clone of my entire system drive. That is, start with a full disk clone, and then use rsync to keep it current.
I've seen plenty of instructions on how to do this with a directory tree, but I've seen none for doing it with a copy of the entire disk. If, for example, I copy /etc/fdisk, then the copied disk would have entries with the same UUIDs as the original disk. Which would mean that if the clone disk were to be bootable, its partitions would need the same UUIDs as the original disk. Which they would be, if the cloned disk started as a full-disk clone, I think. Am I wrong? But that means that when the clone disk was active, I'd have partitions with duplicated UUIDs. Is this going to cause problems? When I boot, will I get the correct partitions loaded?
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May 16, 2011
I am in the process of writing an rsync script to run unattended backups of my entire file system to another system located on my local network using ssh and password-less rsa keys.
I will absolutely will not use password-less keys with the root account and this is the limitation preventing me from accomplishing my goal because root is required by rsync to access the / tree and copy it to another location. I decided that if I compiled the script into a binary that I didn't have a problem with the password being contained within the binary itself but from what I've read there is no way to elevate to root and then back down to user level from within the script/binary.
I can create the script as the user and use chroot to make it owned by root but retain execution permission for the user but it will still cause the ssh login to be under root and therefore require either that I am there to enter my password or the use of password-less keys under the root account which I reiterate I will NOT do. Currently the script is executed by the user on the machine containing the files to be backed up.
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Feb 3, 2011
I've been a DOS/Windows guy for 20 years, and recently became a SW test lab helper. My company uses CentOS for a lot, so I've become familiar with it, but obviously not as comfortable as I am with Windows.
Here's what I have planned:
machine: Core 2 Duo E8400, 8GB DDR2, 60GB SSD OS drive, ATI 4650 video card, other storage is flexible (I have 3 1TB drives and 4 750GB drives around that can be used in this machine.)
uses: HTPC, Network Storage, VMWare server host: SMTP, FTP server, and Web server virtual machines
I've figured out how to do much of this, but I haven't figured out how to do backups in Linux. I've been spoiled with Windows, with the built in backup system so simple to use. I find myself overwhelmed with the array of backup software, and unable to determine which to use. none of them seem to do everything I need them to do, but some come close, I think. I'm hoping someone here can help me out in figuring out which program to use and how to use it.
Here is what I need the backup software to do:
1. scheduled unattended backups, with alerts if the backups fail
2. a weekly full backup with incremental every 12 hours
3. removing the old backups when the new full backup runs, I would prefer to keep 2 weeks of backups, but that's not necessary
4. a GUI would be preferable, since my arthritic fingers don't always do as I want them to do. I typo things a lot, and the label worn off my backspace can attest to that.
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Nov 17, 2010
Thought I'd post it here because it's more server related than desktop... I have a script that does:
[Code]....
This is used to sync my local development snapshot with the live web server. There has to be a more compact way of doing this? Can I combine some of the rsyncs? Can I make the rsync set or keep the user and group affiliations? Can I exclude .* yet include .htaccess?
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Jan 7, 2011
When I run rsync --recursive --times --perms --links --delete --exclude-from='Documents/exclude.txt' ./ /media/myusb/
where Documents/exclude.txt is
- /Downloads/
- /Desktop/books/
the files in those directories are still copied onto my USB.
And...
I used fetchmail to download all my gmail emails. When I run rsync -ar --exclude-from='/home/xtheunknown0/Documents/exclude.txt' ./ /media/myusb/ I get the first image at url.
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Apr 12, 2011
I have a tiny shell script to rsync files between two servers and remove the source files.
This script works fine, when it has been initiated manually or even when the rsync command is executed on the command line.
But the same script doesn't work, when I try to automate it through crontab.
I am using 'abc' user to execute this rsync, instead of root, as root login to servers are restricted in all of our servers, by us.
As I mentioned earlier, manual execution works like charm!
When this rsync.sh is initiated through crontab, it runs the first command(chown abc.abc ...) perfectly without any issues. But the second line is not at all executed, and there is no log entry i can find at /mnt/xyz/folder/rsync.log.
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Sep 18, 2009
I just tried to sync files from one server to another. After the sync process, I found the files are bigger than original ones.
I looked up the web and found someone mentions the rsync daemon. So I have to run the daemon on one server before I run the rsync?
The command I used is rsync --partial --progress -r source destination
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Jul 21, 2010
use rsync to cp such files and dirs under /var/www/html/mydir directory but these two files(/dir4/1.html /dir4/2.html) cant rsync to dest mechine.
rsync configure file,below...
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Dec 8, 2010
I'm using Ubuntu 10.04 LTS server and Postgresql 8.4. I have a .sh script that is run by cron every other hour. That works fine. The .sh script includes an rsync command that copies a postgresql dump .tar file to a remote archive location via ssh. That fails when run by cron; I think because it is (quietly) asking for the remote user's password (and not getting it). I set up the public/private ssh key arrangement. The script succeeds when run manually as the same user that the cron job uses, and does not ask for the password. I am able to ssh to the remote server from the source server (using the same username) and not get the password prompt (both directions), so why doesn't rsync work? I even put a .pgpass file in the root of that user's directory with that user's password, and the user/password are identical on both servers.
I think the problem is rsync is not able to use the ssh key correctly. I tried adding this to my script but it didn't help.
Code:
Here is the rsync command embedding in the .sh script.
Code:
Here is the cron entry:
Code:
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Apr 26, 2010
I currently have the Ubuntu 32 bit 9.10 installed on my laptop. I wanted to install WinXP 64 bit using VirtualBox. My question is: will WinXP 64 bit run faster on Ubuntu 64 bit than it will run on Ubuntu 32 bit (my current OS)? Is the upgrade from Ubuntu 32 bit to Ubuntu 64 bit worth it for running a virtual Windows XP 64 bit?
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Jun 2, 2010
according to this article i read, its definitely faster. this is what i read: Since 64-bit systems can process twice as many instructions per second as a comparable 32-bit system, 64-bit systems are definitely faster than their 32-bit counterparts. it was from this article link: [URL]... Is this true? I always thought it wouldnt make a difference, besides more memory addressing?
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Jul 16, 2010
I put together a p4 that has 3 slots for ddr memory and the specs say maximum memory is 2 G at 400 Mhz or 3 G at 333 Mhz. Now, I assume this means that if you install a third memory stick, it will run at 333 Mhz. Is this right? Which would be better out of curiosity?
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Mar 26, 2011
I am using Ubuntu 10.10 64-Bit Desktop Edition, and I am looking for a faster way to rip CDs, without having to resort to Windows. I try to rip a CD, but it takes 20+ minutes just to get the files copied, then another 5 or so minutes to burn the cd!I have a new SATA interface CD/DVD burner, so I know it is not the hardware.
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May 22, 2011
I installed preload, I unchecked all startup applications, I uninstalled programs I wouldn't use. Any other tips for a faster Ubuntu?
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May 14, 2010
I am considering installing Linux on my workstation to develop and run fortran codes much faster than windows. I wonder if there is significant speed difference between Linux distros. Especially between Redhat and Ubuntu or Debian. I havent used any Linux distro longer enough to have an idea about its speed while running long codes.
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Aug 14, 2010
I have windows xp professional installed and I have 256 MB RAM and 80 GB hard disk.I installed Ubuntu 10.04 LTS Desktop Edition alongside on windows on a formatted 12 GB C drive(windows on E drive).When I used linux it was very slow but my windows is running smoothly.How can I get normal and smooth speed on linux as I have it on windows.Will removing the windows speed up linux?
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Nov 17, 2010
I backed my photographs with K3B in Suse, prior to installing Ubuntu. Now I can't access them. Well I can but not with Ubuntu or Windows 7. Suse (KDE) on the family computer reads them with no problem?? I'm confused. Is there something that KDE has that Debian doesn't. there's nothing wrong with my system exept for this. Reads cd's and dvd's.
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