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From: Szakacsits S. <sz...@si...> - 2004-03-23 22:27:49
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On Fri, 19 Mar 2004, Szakacsits Szabolcs wrote: > On Thu, 18 Mar 2004, Szakacsits Szabolcs wrote: > > > 2) use a compressing filesystem on the local partition so you could get > > transparent compression and ntfsclone would just work. > > > > Unfortunately there aren't many for Linux. None of ext2, ext3, > > reiserfs, xfs, jfs supports this (ext2 had a broken compression > > module long ago but today it's a totally dead project). IMHO > > jffs2, compressed iso fs or gzipfs (www.filesystems.org) could > > do it but I've never tried. > > Another way came to my mind, cloop (compressed loop device) what > Knoppix and most Live CD uses. It's available here (I think), > > http://developer.linuxtag.net/knoppix/sources/ > > Backup: > > ntfsclone -o - device | create_compressed_fs - blocksize > cloop.compressed Just for the record, I tried this out and the create_compressed_fs has a very serious drawback: it compresses first _everything_ in memory then it writes out the compressed data. If you don't have enough RAM + swap then the kernel's out of memory killer will kill the process. I'll take a look at create_compressed_fs if this could be improved ... > Restore: > > install cloop kernel module losetup /dev/cloop1 cloop.compressed ntfsclone --overwrite device /dev/cloop1 Szaka |
