Messages in this thread | | | Subject | Re: [PATCH 00/22 take 3] UBI: Unsorted Block Images | From | Thomas Gleixner <> | Date | Wed, 21 Mar 2007 12:57:42 +0100 |
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On Wed, 2007-03-21 at 12:35 +0100, Jörn Engel wrote: > Even if such flashes still contain a bootloader and a kernel, that will > occupy less than 1% of the device. Wear leveling across the device is > fairly pointless here. This is what I designed LogFS for.
Still you need to have a solution for handling bitflips in those bootloader and kernel areas.
I don't dispute, that on a Terrabyte solid state disk which is used in a totally different way, UBI is not necessarily the right tool.
> There is some middle ground where a combination of UBI and LogFS may > make sense. LogFS can still make sense for devices as small as 64MiB. > But I'm not too concerned about that because flashes will continue to > grow and the advantages of cross-device wear leveling will continue to > diminish.
Flashes will grow, but this will not change the embedded use case with a relativly small FLASH and the bootloader / kernel / rootfs / datafs scenario, where UBI is the right tool to use.
There is no hammer for all nails and I don't see device mapper doing what UBI does right now.
tglx
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