UBI: badblock management confusion!
Adrian Hunter
ext-adrian.hunter at nokia.com
Mon Apr 28 03:59:09 EDT 2008
ext Nancy wrote:
> > > # modprobe ubi mtd=5
> > > UBI: physical eraseblock size: 262144 bytes (256 KiB)
> > > UBI: logical eraseblock size: 258048 bytes
> > > UBI: smallest flash I/O unit: 2048
> > > UBI: VID header offset: 2048 (aligned 2048)
> > > UBI: data offset: 4096
> > > UBI warning: ubi_eba_init_scan: cannot reserve enough PEBs for bad PEB
> > > handling, reserved 19, need 20
> > > UBI: attached mtd5 to ubi0
> > > UBI: MTD device name: "NAND VFAT partition"
> > > UBI: MTD device size: 512 MiB
> > > UBI: number of good PEBs: 2044
> > > UBI: number of bad PEBs: 4
> > > UBI: max. allowed volumes: 128
> > > UBI: wear-leveling threshold: 256
> > > UBI: number of internal volumes: 1
> > > UBI: number of user volumes: 1
> > > UBI: available PEBs: 0
> > > UBI: total number of reserved PEBs: 2044
> > > UBI: number of PEBs reserved for bad PEB handling: 19
> > > UBI: max/mean erase counter: 39/24
> > > UBI: background thread "ubi_bgt0d" started, PID 263
>
> pls:
> > > UBI: available PEBs: 0
> > > UBI: total number of reserved PEBs: 2044
> Quite wrong displaying messages.
>
>
There are no available PEBs so no more volumes can be created.
The number of reserved PEBs includes all existing volumes.
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