Messages in this thread | | | Date | Fri, 5 Dec 2003 09:09:29 +0200 | From | Ville Herva <> | Subject | Re: Is there a "make hole" (truncate in middle) syscall? |
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On Thu, Dec 04, 2003 at 06:03:12PM -0800, you [Mike Fedyk] wrote: > > o per file compression > > Ext2/3 has a flag for it, but support hasn't been implemented.
It has (for 2.0, 2.2, 2.4 ext2) - it just was never merged into baseline.
2.4: http://sourceforge.net/projects/e2compr/ 2.2: http://his.luky.org/ftp/mirrors/e2compr/www.netspace.net.au/%257Ereiter/e2compr/
FWIW, I have a 2.2 server keeping >20 workstations' daily backups on compressed ext2:
/dev/md2 441G 154G 287G 35% /backup-versioned /dev/md4 144G 141G 3.5G 98% /backup-versioned2
and it's really solid.
> o make hole support
According to Andreas Dilger, Peter Braam has implemented this (sys_punch): http://groups.google.com/groups?hl=en&lr=&ie=UTF-8&oe=utf-8&threadm=linux.kernel.200106291838.f5TIcbAM015809%40webber.adilger.int&rnum=2&prev=/groups%3Fhl%3Den%26lr%3D%26ie%3DUTF-8%26oe%3Dutf-8%26q%3Dhole%2Bpunch%2Bgroup%253Amlist.linux.kernel%26btnG%3DGoogle%2BSearch
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