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On Sun, May 04, 2008 at 04:12:08PM -0700, Mark Knecht wrote: |
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> 1) I'm having trouble figuring how to best run tar. I end up with |
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> files at the wrong level every time so far. |
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> |
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> Assume I first mount a partition that's empty, and then mount a |
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> partition I want to save that contains a number of system directories |
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> - /, tmp, etc. lib, mnt and others: |
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> |
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> mount /dev/sda8 /mnt/gentoo [[ This is empty except for a mount |
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> point called TarPoint ]] |
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> cd /mnt/gentoo |
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> mount /dev/sda5 TarPoint [[ The partition I want to backup ]] |
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> |
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> Now I can see all my directories under TarPoint. What's the best way |
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> to run tar, creating a file called SYSTEM.tar.bz2 in /mnt/gentoo, so |
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> that later, when I have an empty partition on a different hard drive |
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> (hda) where I'm going to restore the system, I can do this |
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> |
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> mount /dev/hda11 /mnt/gentoo |
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> cd /mnt/gentoo |
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> scp mark@server:SYSTEM.tar.bz2 . |
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> tar xvfp SYSTEM.tar.bz2 |
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|
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To extract bzip2 files with tar, you need to add the "j" option. |
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|
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> and I get the system directory hierarchy back again. |
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> |
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> 2) This laptop is a dual boot machine so the system clock is set to |
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> local when I'm in my Gentoo environment. When I drop into the install |
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> CD I presume it's set to UTC as is the standard. My question has to do |
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> with any requirements to setting time prior to making the tar ball or |
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> untarring to build the environment. |
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> |
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> What I'm seeing is that the command |
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> |
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> tar xcjf SYSTEM.tar.bz2 |
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|
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You have conflicting options there. To extract, use "x". To |
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create, use "c". |
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|
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> generates lots of messages about file times being in the |
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> future. Maybe this won't matter if I use the backup later than |
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> 8 hours from the time I make it but in the short term will it |
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> cause any problems? |
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|
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Any problems? Probably. They may be inconsequential though. |
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Follow the instructions below for a possible solution to your |
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problem. |
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|
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First, make sure your time is set correctly under UTC with the |
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date command. For help with it, |
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<http://www.gentoo.org/doc/en/handbook/handbook-x86.xml?part=1&chap=5> |
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|
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Then, you might try setting the TZ variable in the shell |
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environment to the timezone in which the tar'ed files |
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resided. Afterwards, untar the tarball. Not sure how this will |
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work in an "install" environment. |
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|
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-- |
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Ian Graeme Hilt |
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ian.hilt (at) gmail.com |
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GnuPG key: 0x4AFC1EE3 |
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-- |
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gentoo-user@l.g.o mailing list |
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