[pkg-cryptsetup-devel] UUID in fstab for device mapper devices?

[Ritesh Raj Sarraf]

On Friday 07 Aug 2009 19:58:46 Max Vozeler wrote:
> [Resend to @packages.debian.org]
>
> Hello fellow maintainers,
>
> we recently changed d-i (partman-target, to be precise) to use
> UUIDs in fstab in order to get stable device naming.
>
> Currently UUIDs are used for all devices except
>  - /dev/fd*
>  - cryptsetup mappings
>  - those specified by explicit /dev/disk/by-* paths
>
> Since then, we concluded that it is preferable to go back to plain
> /dev/mapper/ paths for LVM LVs because those already provide stable
> device naming (and are more descriptive).
>
> What about your types of devices? (dmraid, multipath)
>
> Should we refer to them by UUID or with the /dev/mapper/ paths?

Accessing device mapper devices with device id would be a safer bet.
Because for a use case, the multipathed LUNs are also used as raw devices by 
many apps (oracle).

IMO, any block device which can be used without a file system shouldn't be 
referred using UUID.
From my experience, referring device mapper devices by their device IDs has 
worked very reliably and persistently in all cases.


Ritesh
-- 
Ritesh Raj Sarraf
RESEARCHUT - http://www.researchut.com
"Necessity is the mother of invention."
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 835 bytes
Desc: This is a digitally signed message part.
URL: <http://lists.alioth.debian.org/pipermail/pkg-cryptsetup-devel/attachments/20090807/2c1d4423/attachment.pgp>