Sorry for the confusion Brad, I could have explained a little better. I am using different file systems for each one. I created two different directories, each having the exact same contents:
file system kernel initrd start-up script I started two different console sessions and from each moved into one of the UML directories. I then took turns going from one to the other running the start-up script. The UML documentation was pretty absolute about not using the same file system for multiple instances. That is, unless you use the COW but that is a different setup as you previously explained Hope this helps, Eric -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Brad Fritz Sent: Friday, October 11, 2002 12:38 AM To: Eric B Kiser Cc: [EMAIL PROTECTED] Subject: Re: [leaf-devel] UML Questions On Thu, 10 Oct 2002 23:12:15 -0400 Eric Kiser wrote: > Brad, > > [snip from below] > it *seems* > like you should be okay unless you try to back up two instances > simultaneously (or perform other simultaneous write operations to > /dev/ubd0) > [/snip] > > I ran simultaneous full back ups and timed it so that I did both, backing up > the same file on both at the same time and backing up different files at the > same time. When I rebooted both UML routers they came up fine. I was unable > to find any problems. I may have misunderstood your setup. Are you using a single Bering file system image for both UML instances (like I assumed), or are you using multiple copies of the file system, one for each UML instance? Your test results seem to indicated the latter, but "I...used the exact same script for each instance of Bering UML" suggests to me the former. Either way, it's hard to argue with success. If it works as you expect and fits your needs, life is good, right? --Brad > [snip from below] > It also seems like you could overwrite a package > backup from one instance with a later backup from a second > instance > [/snip] > > This I have also tested and it did not cause a problem. I just did a simple > name change on each router and then backed one up and then the other. I then > rebooted both and they came up with the new names just as I had set them. > > Let me know if you think of anything else that might cause a problem and I > will go ahead and test it. > > Regards, > Eric > > -----Original Message----- > From: Brad Fritz [mailto:[EMAIL PROTECTED]] > Sent: Thursday, October 10, 2002 1:23 PM > To: Eric B Kiser > Cc: [EMAIL PROTECTED] > Subject: Re: [leaf-devel] UML Questions > > > > On Thu, 10 Oct 2002 11:03:33 -0400 Eric Kiser wrote: > > > Just wanted to close this issue with a little more finality. I decided not > > to mess with the COW files right now and used the exact same script for > each > > instance of Bering UML. > > Since Bering runs from a ram disk and the boot file system is > typically not mounted except during package backups, it *seems* > like you should be okay unless you try to back up two instances > simulaneously (or perform other simultaneous write operations to > /dev/ubd0). It also seems like you could overwrite a package > backup from one instance with a later backup from a second > instance (which may be desirable, depending on what you are > trying to accomplish). All that is untested speculation though. > > > I backed up all my files in case something went wrong. > > I booted up two Bering UML file systems and made some changes. > > Saved changes. > > Backed up /etc. > > Rebooted Bering UML file systems. > > Checked changes. > > Everything seems to be working fine. > > Cool. > > > If I find any bugs in this later then I will post back to the list. > > Please do. > > --Brad > > > Regards, > > Eric Kiser ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf _______________________________________________ leaf-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/leaf-devel ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf _______________________________________________ leaf-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/leaf-devel
