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Ernst Herzberg wrote: |
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>On Tuesday 24 January 2006 21:40, Jeff wrote: |
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> |
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> |
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>>DUH ME! Open mouth, insert face... |
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>> |
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>>Ok, what I *meant* to say from post #1, is, the filesystem I'm |
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>>tarballing is quite large - 25g. The tar command should be able to |
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>>digest this, yes? Should I be worried? |
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>> |
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>> |
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> |
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>Last week i back'ed up a machine with 4 80G disks as RAID5 with the method |
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>mentioned before. tar-size on the desination machine was about 120GB |
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>compressed (yes, one File:). Both filesystems are reiserfs. |
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> |
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>Restore again wih the same method, only the other way around, to 4 |
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>250GB-disks. No problems. |
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> |
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>Tip: check your destination tar file with tar -tzf ... or tar -tjf ... before |
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>you delete the source. Compression is a good check that no data has been |
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>changed during transfer of the data. |
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> |
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><earny/> |
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> |
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> |
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Hey, I think I might have something useful to add here... :-D |
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To keep my tar file sizes more manageable, any directories containing |
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large directories have script blocks within the backup script that |
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create a tar file for each directory in that directory. (Whoa! Did I |
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just say that!?) Here's the block of code that, for example, handles my |
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/home directories: |
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|
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<code> |
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dt=`date +%G%m%d-%H%M%S` |
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find /home/ -type s > /tmp/home-sockets.tmp |
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for x in `ls -lA /home/ | awk '{print $9}'` |
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do |
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tar cpPj -X /tmp/home-sockets.tmp -f |
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/var/backups/home-$x-$dt.tbz2 /home/$x |
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done |
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rm -f /tmp/home-sockets.tmp |
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</code> |
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|
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This creates a separate tar file for each directory in /home. The $dt |
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var isn't required, of course... I just use it to "time stamp" all of my |
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backup files as it makes it easier to track them. |
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Regardless of whether or not the kernel or file system can support the |
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huge tar files others have referred to, I prefer to always make things |
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as manageable and "modular" as possible. The smaller the files, the |
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easier (quicker, really) they are to work with. |
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|
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Just food for thought... |
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-- |
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