Messages in this thread | | | Date | Mon, 25 Jul 2011 13:47:30 -0700 | From | "H. Peter Anvin" <> | Subject | Re: [PATCH v3 1/2] init: add root=PARTUUID=UUID/PARTNROFF=%d support |
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On 06/30/2011 02:10 PM, Will Drewry wrote: > Expand root=PARTUUID=UUID syntax to support selecting a root partition > by integer offset from a known, unique partition. This approach > provides similar properties to specifying a device and partition number, > but using the UUID as the unique path prior to evaluating the offset. > > For example, > root=PARTUUID=99DE9194-FC15-4223-9192-FC243948F88B/PARTNROFF=1 > selects the partition with UUID 99DE.. then select the next > partition. > > This change is motivated by a particular usecase in Chromium OS where > the bootloader can easily determine what partition it is on (by UUID) > but doesn't perform general partition table walking. > > That said, support for this model provides a direct mechanism for the > user to modify the root partition to boot without specifically needing > to extract each UUID or update the bootloader explicitly when the root > partition UUID is changed (if it is recreated to be larger, for > instance). Pinning to a /boot-style partition UUID allows the arbitrary > root partition reconfiguration/modifications with slightly less > ambiguity than just [dev][partition] and less stringency than the > specific root partition UUID. >
Obklibcsnark:
Does anyone still doubt that as long as this kind of code exists in the kernel that it will not get continually added to?
-hpa
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