[Fedora-livecd-list] persistence testing howto

[Mike Dickson]

I just finished trying to download JBoss Developer Studio and installing
it on the thumb drive.  It filled up again.  I then dropped the .jar on
the stick hoping that I could install from that and it filled up again.
Checkmate.  

MikeD

On Thu, 2008-01-03 at 15:30 -0800, Mike Dickson wrote:

> Ran that and yes the snapshot area filled up BEFORE the errors.  Let
> me know what I can do....
> 
> MikeD
> 
> On Thu, 2008-01-03 at 16:31 -0600, Douglas McClendon wrote: 
> 
> > Mike Dickson wrote:
> > > Guys,
> > > 
> > > I got a LiveCD + Persistence usb drive running from your scripts, but 
> > > got I/O errors if I tried to do a yum update.
> > > 
> > > Before that I was able to vi test.txt and put some text in and it 
> > > survived a reboot.
> > > 
> > > What can I do to address the i/o errors?
> > 
> > My first question/explanation would be that you filled up the snapshot 
> > device.  This is quite possible, as a yum install involves creating 
> > several copies of the actual files you end up installing.
> > 
> > The way to see if this is what is happening would be to have another 
> > terminal open, and periodically watch the output of "dmsetup status". 
> > As new blocks are written to the rootfs snapshot device, you will see 
> > the snapshot filling up.
> > 
> > If you get these IO errors even before the snapshot fills up, please try 
> > to post some more detailed output.
> > 
> > In general, as discussed there are pros and cons with this method, and a 
> > unionfs method.  I do think there are ways to work around the cons of 
> > this method in such a way that it is useful.  For instance, I'll play 
> > around and see if I can prescribe a process of using yum that will get 
> > it to create all of its intermediate files in a native tmpfs (/dev/shm 
> > or the like) instead of the rootfs, so that they don't eat into the 
> > snapshot space.  Likewise, now that I have my first actual tester, maybe 
> > I'll figure out some other creative ways to improve the method (I have 
> > some ideas I need to experiment with...).
> > 
> > Thanks,
> > 
> > -dmc
> > 
> > 
> > 
> > > 
> > > MikeD
> > > 
> > > "Messsage from syslogd at localhost <mailto:syslogd at localhost> at
> > >   kernel: journal commit i/o error"
> > > 
> > > 
> > > On Wed, 2008-01-02 at 04:07 -0800, Mike Dickson wrote:
> > >> I have some time now.  I am attempting this tonight and tomorrow.  I 
> > >> will let you know.
> > >>
> > >> MikeD
> > >>
> > > 
> > > 
> > > ------------------------------------------------------------------------
> > > 
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> > 
> 
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