I'm trying to work out how to generate a "valid" UBI image, but I keep getting a "cannot get enough PEBs" warning. I generate my image (destined for a 64MB NAND partition) using:- $ mkfs.ubifs -d output/target -e 0x1f000 -c 483 -m 0x800 -x none -F -o output/images/rootfs.ubifs $ ubinize -o output/images/rootfs.ubi -m 0x800 -p 0x20000 -s 512 -O 2048 ubinize.cfg My .cfg file is:- [ubifs] mode=ubi vol_id=0 vol_type=dynamic vol_name=rootfs vol_alignment=1 vol_flags=autoresize vol_size=61MiB image=output/images/rootfs.ubifs And the resulting image is:- -rw-rw-r-- 1 mpfj mpfj 9437184 Apr 16 10:19 rootfs.ubi This is then written to a freshly erased 64MB NAND partition, and appears to mount correctly, apart from the warning about not enough reserved PEBs, as follows:- ... [ 0.792456] UBI: attaching mtd7 to ubi0 [ 1.540858] UBI: scanning is finished [ 1.557578] UBI warning: print_rsvd_warning: cannot reserve enough PEBs for bad PEB handling, reserved 4, need 40 [ 1.561346] UBI: attached mtd7 (name "rootfs", size 64 MiB) to ubi0 [ 1.561404] UBI: PEB size: 131072 bytes (128 KiB), LEB size: 126976 bytes [ 1.561434] UBI: min./max. I/O unit sizes: 2048/2048, sub-page size 512 [ 1.561464] UBI: VID header offset: 2048 (aligned 2048), data offset: 4096 [ 1.561493] UBI: good PEBs: 512, bad PEBs: 0, corrupted PEBs: 0 [ 1.561520] UBI: user volume: 1, internal volumes: 1, max. volumes count: 128 [ 1.561554] UBI: max/mean erase counter: 2/1, WL threshold: 4096, image sequence number: 1434266085 [ 1.561591] UBI: available PEBs: 0, total reserved PEBs: 512, PEBs reserved for bad PEB handling: 4 [ 1.562374] UBI: background thread "ubi_bgt0d" started, PID 598 ... I think I've calculated the various option values correctly for mkfs.ubifs and ubinize. But since I'm getting the warning, can anyone explain where I've gone wrong ? Thanks in advance Mark J. -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
