Re: Replace hardware without reinstall debian lenny
On Tuesday 11 May 2010 01:10:50 Rob Owens wrote:
> On Mon, May 10, 2010 at 11:52:51AM -0400, Ryan Manikowski wrote:
> > On 5/10/2010 11:37 AM, Vincze Janos Istvan wrote:
> > > Hi list,
> > >
> > > My debian server will soon get a complete new hardware (motherboard,
> > > cpu, memory, stb.).
> > > Have anybody a good idea how to replace the old computer without
> > > reinstall the whole system?
> > >
> > > I have installed and configured:
> > > - The most important is ASTERISK PBX
> > > - Apache2 web server
> > > - Samba
> > > - Postfix & Dovecot
> > > - ProFTP
> > > - etc.
> > >
> > > I do not want to reinstall everything.
> > >
> > > Current debian installation:
> > > - Debian lenny 5.0.4
> > > - Kernel: 2.6.26-2-686
> > >
> > > thank you very much in advance,
> > >
> > > Vinyo
> >
> > Having recently ported a machine (placing drives into new physical
> > hardware), this process was very simple and painless. You really have
> > two primary concerns here.
> >
> > 1) Does the currently running kernel support the hardware you are moving
> > the drive(s) to? If so then its a matter of ensuring the hard drives are
> > attached and presented by the BIOS in the correct order (/dev/sdX
> > mappings). As long as this is the same, the system will boot. Changes on
> > your end, should the drive mappings change, would be to modify
> > /etc/fstab and grub's menu.lst (assuming you're using grub in the first
> > place).
>
> You could use UUID's instead of device names (/dev/sdX) to get around this
> issue.
There was a thread on this recently, and I think it was said that even UUID's
can change with changing hardware. It was suggested, if I remember
correctly, that the only safe way to prevent a name change is to label the
partitions when you first partition the drive and use labels in fstab etc..
I am sure someone will correct me if I have got this wrong, so if noone does
so I have probably remebered correctly.
HTH
Lisi
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