On Sunday 06 August 2017 11:43:25 Richard Weinberger wrote: > Pali, > > Am 25.07.2017 um 16:27 schrieb Pali Rohár: > >> I fear this is not correct, it will disable a legit self-check of > >> UBI volumes. If the read-only volume is corrupted/truncated and > >> you miss PEBs, this check will no longer > >> trigger. > >> > >> Especially when dealing with nanddumps, truncation is a common > >> problem. > > > > Any idea how to fix it? Or how to handle read-only images which are > > marked for auto-resize? > > I'd vote for rejecting images that have auto-resize set when the MTD > is read-only. In fact, using UBI on top of a read-only MTD is very > uncommon and not recommended (for NAND). The auto-resize flag should > be also only set when you just have created it using mkfs.ubifs. Why > would you inspect such an image with the kernel UBIFS unless you're > hunting down a bug in mkfs.ubifs? > > Thanks, > //richard
E.g. because when I get UBIFS image and I want to unpack it. IMO UBIFS image which have auto-resize set is also valid UBIFS image and kernel should be able to read it too, even in R/O mode. -- Pali Rohár pali.ro...@gmail.com
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