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<div class="links"> '''Re: [vserver] Copy-on-write files:'''<br /> <span class="small">vserver development mailing list</span> <br /> [<nowiki/>[[../|Next/Previous Months]]] [<nowiki/>[http://www.solucorp.qc.ca/miscprj/s_context.hc Main vserver Project Homepage]] [<nowiki/>[http://www.solucorp.qc.ca/mlist/index.hc?list=vserver Howto Subscribe/Unsubscribe]] [<nowiki/>[http://www.paul.sladen.org/vserver/ Paul Sladen's vserver stuff]] </div> <div align="center"> {| class="wikitable" border="2" width="100%" |- ! [[../|About this list]] ! [[date.html|Date view]] ! [[index.html|Thread view]] ! [[subject.html|Subject view]] ! [[author.html|Author view]] ! [[attachment.html|Attachment view]] |} </div> '''From:''' [mailto:ragnar_at_this.is?Subject=Re:%20%5Bvserver%5D%20%20Copy-on-write%20files ''ragnar_at_this.is'']<br /> '''Date:''' Wed 18 Jun 2003 - 06:11:17 BST * '''Previous message:''' [[0166.html|Brian Ipsen: "[vserver] User Quota's - how to do it ?"]] * '''In reply to:''' [[0163.html|Herbert Poetzl: "Re: [vserver] Copy-on-write files"]] * '''Next in thread:''' [[0168.html|Roland Moriz: "[vserver] [OT] Anyone runs Nagios on vserver/ctx"]] * '''Reply:''' [[0168.html|Roland Moriz: "[vserver] [OT] Anyone runs Nagios on vserver/ctx"]] * '''Reply:''' [[0170.html|Herbert Poetzl: "Re: [vserver] Copy-on-write files"]] ----- Hi,<br /> Quoting Herbert Poetzl <[mailto:herbert_at_13thfloor.at?Subject=Re:%20%5Bvserver%5D%20%20Copy-on-write%20files herbert_at_13thfloor.at]>:<br /> Ading to Herberts comments.<br /> ''> On Tue, Jun 17, 2003 at 01:44:00PM -0500, John Goerzen wrote:''<br /> ''> > it can do "copy on write" hard links for binaries''<br /> ''> > between one system and the next.''<br /> Yes, but it does not work that way....<br /> tar has a -U option<br /> unlink & recreate files instead of overwriting<br /> Package istallation from .rpm or .deb does this<br /> or rename and copy.<br /> ''> anyway, there is something called IMMUTABLE-LINK-INVERSION''<br /> ''>From - vserver 0.6 changes log''<br /> http://www.solucorp.qc.ca/changes.hc?projet=vserver&version=0.6<br /> it looks like this is now part of the ctx patch<br /> but probably only for ext2<br /> Does anyone maintain the modified e2fsprogs package?<br /> Sam's patch is for version 1.25.<br /> ''> > I have never used this feature since I'm running Debian.''<br /> ''> > However, I'm interested in the mechanics, and I'm wondering''<br /> ''> > if the system can ... "combine" systems post-install.''<br /> I know of no problem doing this any time you like.<br /> ''> it can be used, although it's not copy on write, as you''<br /> ''> will know now ...''<br /> copy on write would be better, then one could blindly unify<br /> all files that are the same. If you can work that out, e.g.<br /> using VFS or something you would make many people happy.<br /> Interesting comment from<br /> GCFS: a Garbage-Collected Filesystem for Linux<br /> http://www.eleves.ens.fr:8080/home/madore/linux/gcfs/<br /> .....<br /> This �copy on write� idea is also completely independent<br /> from the GCFS. I should be asking myself whether it could<br /> be implemented in a traditional (gc-less) filesystem, but<br /> every time I try to think about this question,<br /> my mind seems to go bezerk.<br /> .....<br /> ''> > If I knew the APIs, I'd be happy to write such a tool myself.''<br /> You can look at:<br /> fdupes - install with dselect<br /> or a perl script fast-dupemerge<br /> http://www.furryterror.org/~zblaxell/dupemerge/<br /> ''> there where several proposals, and as far as I remember''<br /> ''> Sam is actually maintaining (at least from time to time)''<br /> ''> a tool to unify on debian and similar systems ...''<br /> I found unify-dirs at<br /> http://mirrors.paul.sladen.org/sam.vilain.net/vserver/<br /> <pre> --- Also interesting to look at User-mode Linux -- Sharing Filesystems between Virtual Machines http://user-mode-linux.sourceforge.net/shared_fs.html -- Host file access http://user-mode-linux.sourceforge.net/hostfs.html best ragnar</pre> ----- * '''Previous message:''' [[0166.html|Brian Ipsen: "[vserver] User Quota's - how to do it ?"]] * '''In reply to:''' [[0163.html|Herbert Poetzl: "Re: [vserver] Copy-on-write files"]] * '''Next in thread:''' [[0168.html|Roland Moriz: "[vserver] [OT] Anyone runs Nagios on vserver/ctx"]] * '''Reply:''' [[0168.html|Roland Moriz: "[vserver] [OT] Anyone runs Nagios on vserver/ctx"]] * '''Reply:''' [[0170.html|Herbert Poetzl: "Re: [vserver] Copy-on-write files"]] <div align="center"> {| class="wikitable" border="2" width="100%" |- ! [[../|About this list]] ! [[date.html|Date view]] ! [[index.html|Thread view]] ! [[subject.html|Subject view]] ! [[author.html|Author view]] ! [[attachment.html|Attachment view]] |} </div> <div align="center"> [<nowiki/>[[../|Next/Previous Months]]] [<nowiki/>[http://www.solucorp.qc.ca/miscprj/s_context.hc Main vserver Project Homepage]] [<nowiki/>[http://www.solucorp.qc.ca/mlist/index.hc?list=vserver Howto Subscribe/Unsubscribe]] [<nowiki/>[http://www.paul.sladen.org/vserver/ Paul Sladen's vserver stuff]]<br /> <span class="small">Generated on Wed 18 Jun 2003 - 06:40:31 BST by [http://www.hypermail.org/ hypermail 2.1.3]</span> </div>
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