http://www.snell-pym.org.uk/archives/2009/01/10/backup-system-progress-update/ Sarah and Alaric Snell-Pym living in interesting times Tue, 22 May 2012 23:03:38 +0000 http://wordpress.org/?v=2.7 hourly 1 http://www.snell-pym.org.uk/archives/2009/01/10/backup-system-progress-update/comment-page-1/#comment-85199 Faré Tue, 13 Jan 2009 11:51:36 +0000 http://www.snell-pym.org.uk/?p=907#comment-85199 <p>lzma makes total sense for long-term archiving, however, even more so than gzip or bzip2, it probably requires either having a very big block size (how many megabytes? maybe 1MB from what squashfs experiments suggest. For bzip2 you'd want say .5MB with bzip -6 or 1MB with the equivalent of bzip2 -11) or whole-file compression (at which point it may be a layer on top of your block archive rather than below it).</p> lzma makes total sense for long-term archiving, however, even more so than gzip or bzip2, it probably requires either having a very big block size (how many megabytes? maybe 1MB from what squashfs experiments suggest. For bzip2 you'd want say .5MB with bzip -6 or 1MB with the equivalent of bzip2 -11) or whole-file compression (at which point it may be a layer on top of your block archive rather than below it).

]]> http://www.snell-pym.org.uk/archives/2009/01/10/backup-system-progress-update/comment-page-1/#comment-85171 David Cantrell Mon, 12 Jan 2009 18:26:43 +0000 http://www.snell-pym.org.uk/?p=907#comment-85171 <p>So what you're saying really is that you've written a shiny new filesystem? :-)</p> So what you're saying really is that you've written a shiny new filesystem?

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