*** Reply to note of Mon, 25 Jul 2005 13:17:06 -0500 (EST/CDT) *** by [email protected]
The Linux Journal had an article a while back: http://www.linuxjournal.com/article/7714 For example, if you hava a readonly directory called /ro/etc, that has two files, inittab and fstab: /ro/etc/ inittab fstab And you have a read/write directory called /rw/etc, that has one file called hosts: /rw/etc/ hosts Then, when you union mount them to mount point /etc: mount mount -t unionfs -o dirs=/rw/etc/,/ro/etc=ro none /etc A "ls /etc" displays the union of the two directories, three files: /etc/inittab /etc/fstab /etc/hosts If you change /etc/inittab, the modifed copy is writen to /rw/etc: /rw/etc/ hosts inittab Sal James Melin <[EMAIL PROTECTED]> writes: >What, pray tell, is union mount? > > > > > Alan Altmark > <[EMAIL PROTECTED] > ibm.com> To > Sent by: Linux on [email protected] > 390 Port cc > <[EMAIL PROTECTED] > IST.EDU> Subject > Re: SLES9 and VM Shared Kernel > > 07/25/2005 01:06 > PM > > > Please respond to > Linux on 390 Port > <[EMAIL PROTECTED] > IST.EDU> > > > > > > >On Monday, 07/25/2005 at 07:00 ZE2, Rob van der Heij <[EMAIL PROTECTED]> >wrote: >> And you're right, the potential savings with sharing binaries in DCSS >> are larger (and probably harder to manage from a software management >> point of view). The kernel in NSS and binaries in DCSS are independent >> issues that must be implemented separately. > >When union mount arrives, managing shared binaries should, hopefully, get >easier. Then you don't have to know in advance which files are r/o and >which are r/w. > >Alan Altmark >z/VM Development >IBM Endicott > >---------------------------------------------------------------------- >For LINUX-390 subscribe / signoff / archive access instructions, >send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or >visit >http://www.marist.edu/htbin/wlvindex?LINUX-390 > >---------------------------------------------------------------------- >For LINUX-390 subscribe / signoff / archive access instructions, >send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit >http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
