[U-Boot] UBI: volume auto-resize

[Marek Vasut]

Dear Matevz Langus,

> Hi,
> 
> Thanks, initial problem about the subpage size was solved fast.

How, so you can only use 2048b big subpage?

> The
> question still remains, is it wise to let u-boot resize volumes if it only
> boots from one of the volumes.

Sure, why not?

btw please avoid top-posting when replying to emails.

> 
> Matevz Langus
> 
> On 13. maj 2012, at 19:09, Marek Vasut <marek.vasut at gmail.com> wrote:
> > Dear Matevz Langus,
> > 
> >> Hi,
> >> 
> >> I found an interesting situation where I can not decide whether it is a
> >> bug or functionality that should not be included at all.
> >> 
> >> If I generate UBI image consisting of 3 Volumes to NAND flash on my
> >> board, U-boot  does not attach UBI to MTD. This happens only if UBI
> >> contains a volume that has auto-resize flag set. U-boot tries to resize
> >> it but fails.
> >> 
> >> Just started fixing it, but I have a question. Is it desirable that
> >> U-boot changes something in the FS? Would it not be better if U-boot
> >> would just read things out (that is all I want, to get uImage and dtb
> >> file) and leave the rest to Linux. (Linux handles the procedure without
> >> any issues).
> >> 
> >> Any opinion welcome.
> >> 
> >> Creating 1 MTD partitions on "nand0":
> >> 0x000000200000-0x000008000000 : "mtd=2"
> >> Bad block table found at page 65472, version 0x01
> >> Bad block table found at page 65408, version 0x01
> >> nand_read_bbt: Bad block at 0x0000011a0000
> >> UBI: attaching mtd1 to ubi0
> >> UBI: physical eraseblock size:   131072 bytes (128 KiB)
> >> UBI: logical eraseblock size:    129024 bytes
> >> UBI: smallest flash I/O unit:    2048
> >> UBI: sub-page size:              512
> > 
> > Is the subpage size here correct? I know at least about one driver that
> > might misreport it under certain conditions.
> > 
> > Best regards,
> > Marek Vasut

Best regards,
Marek Vasut