Re: [gentoo-user] Migrating a system
Daniel Pielmeier wrote: tar --atime-preserve --same-owner --numeric-owner -Spvcjf back.tar.bz2 / Is it really necessary to back up /sys and /proc? What about /dev? Also, to Björn, I didn't find a -a option in man tar, what does it do? Is it different that --atime-preserve? Thanks! -- Randy Barlow http://electronsweatshop.com -- [EMAIL PROTECTED] mailing list
Re: [gentoo-user] Migrating a system
Randy Barlow schrieb: Is it really necessary to back up /sys and /proc? What about /dev? I don't think it is necessary but it will consume almost no disk space so I don't worry. Also, to Björn, I didn't find a -a option in man tar, what does it do? Didn't find this option too! Is it different that --atime-preserve? Thanks! -- [EMAIL PROTECTED] mailing list
Re: [gentoo-user] Migrating a system
Hello Daniel Pielmeier, Is it really necessary to back up /sys and /proc? What about /dev? I don't think it is necessary but it will consume almost no disk space so I don't worry. /proc/kcore can get rather large. You are not only using the disk space when backing up, but when restoring too. If you have 4GB of RAM, you will waste 4GB of your root partition when you restore /proc/kmem, which could be a problem if root is only a few hundred MB. The --one-filesystem option would be useful here. I prefer to back up each filesystem separately, since the main planned use for them is a hosed filesystem I would hope to need only one of them (at most). -- Neil Bothwick We are sorry, but the number you have dialed is imaginary. signature.asc Description: PGP signature
Re: [gentoo-user] Migrating a system
On Wednesday 03 October 2007, Daniel Pielmeier wrote: Randy Barlow schrieb: Is it really necessary to back up /sys and /proc? What about /dev? I don't think it is necessary but it will consume almost no disk space so I don't worry. Also, to Björn, I didn't find a -a option in man tar, what does it do? Didn't find this option too! Is it different that --atime-preserve? Thanks! Run tar from a LiveCD to back up the fs' in each partition. Virtual fs won't bother you then. -- Regards, Mick signature.asc Description: This is a digitally signed message part.
Re: [gentoo-user] Migrating a system
On Tue, 02 Oct 2007 16:45:23 -0400 Randy Barlow [EMAIL PROTECTED] wrote: So I was an idiot when I set up my system and didn't use LVM. Now that I'm out of disk space on one of my drives and kicking myself, I want to do it without doing a reinstall. If I use tar -cvjpf oldSystemThatShouldStillWorkWhenUnTarred.tar.bz2 /, then setup LVM, then tar all that junk back to the new system via tar -xvpf oldSystemThatShouldStillWorkWhenUnTarred.tar.bz2 with / as my working directory, should that do the trick (with, of course, another go at grub-install)? Is the -p flag to tar enough to store ALL the necessary file system information? I just want to make sure I'm not forgetting anything... P.S. And I'll have to build LVM support into the kernel too... R You could always just move a few very large or very critical pieces of the filesystem (like /home) over to a new drive. Then you'd have lots of extra space and you'd have a backup disk to use in case your primary went down. You could also back up the primary stuff on an unmounted backup partition on the second drive, effectively providing an almost-hot backup. BTW, I highly recommend not compressing the archive ...tar.bz2 because it will take a really long time. Just tar it and leave it at that. It might be a few hundred megs bigger, but it'll get done before december. -- [EMAIL PROTECTED] mailing list
[gentoo-user] Migrating a system
So I was an idiot when I set up my system and didn't use LVM. Now that I'm out of disk space on one of my drives and kicking myself, I want to do it without doing a reinstall. If I use tar -cvjpf oldSystemThatShouldStillWorkWhenUnTarred.tar.bz2 /, then setup LVM, then tar all that junk back to the new system via tar -xvpf oldSystemThatShouldStillWorkWhenUnTarred.tar.bz2 with / as my working directory, should that do the trick (with, of course, another go at grub-install)? Is the -p flag to tar enough to store ALL the necessary file system information? I just want to make sure I'm not forgetting anything... P.S. And I'll have to build LVM support into the kernel too... R -- [EMAIL PROTECTED] mailing list
Re: [gentoo-user] Migrating a system
Randy Barlow schrieb: So I was an idiot when I set up my system and didn't use LVM. Now that I'm out of disk space on one of my drives and kicking myself, I want to do it without doing a reinstall. If I use tar -cvjpf oldSystemThatShouldStillWorkWhenUnTarred.tar.bz2 /, then setup LVM, then tar all that junk back to the new system via tar -xvpf oldSystemThatShouldStillWorkWhenUnTarred.tar.bz2 with / as my working directory, should that do the trick (with, of course, another go at grub-install)? Is the -p flag to tar enough to store ALL the necessary file system information? I just want to make sure I'm not forgetting anything... P.S. And I'll have to build LVM support into the kernel too... R From time to time i backup my complete system to avoid a reinstall after failures. I used something like this and it worked for me (tested it after a hard drive crash)! tar --atime-preserve --same-owner --numeric-owner -Spvcjf back.tar.bz2 / Maybe some flags are not necessary but --same owner would be a good option to preserve the user and group permissions of the files too, as i don't know if -p already covers this. Also take care to mount all partitions you want to backup! I don't know about lvm as i did not use a logical-volume-manager this time and now i use lvm within evms. -- [EMAIL PROTECTED] mailing list
Re: [gentoo-user] Migrating a system
On Tue, 2007-10-02 at 16:45 -0400, Randy Barlow wrote: So I was an idiot when I set up my system and didn't use LVM. Now that I'm out of disk space on one of my drives and kicking myself, I want to do it without doing a reinstall. If I use tar -cvjpf oldSystemThatShouldStillWorkWhenUnTarred.tar.bz2 /, then setup LVM, then tar all that junk back to the new system via tar -xvpf oldSystemThatShouldStillWorkWhenUnTarred.tar.bz2 with / as my working directory, should that do the trick (with, of course, another go at grub-install)? Is the -p flag to tar enough to store ALL the necessary file system information? I just want to make sure I'm not forgetting anything... P.S. And I'll have to build LVM support into the kernel too... R The -a option might be a good choice, and i like the --one-file-system as well, for backup purpouses. Its very convenient to be able to restore partitions separatly, without having to remember whats mounted where and 'what parts of this and that did I archive'. rsync is nice too. And faster... Just remember not to rsync to a non UNIX FS, as that would cause some troubles with permissions and other things. Good luck. :) /Björn -- [EMAIL PROTECTED] mailing list
