Messages in this thread | | | Date | Sun, 17 Jun 2012 18:36:41 +0200 | Subject | Re: Partitions: Amiga RDB partition on 2 TB disk way too big, while OK in AmigaOS 4.1 | From | Geert Uytterhoeven <> |
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On Sun, Jun 17, 2012 at 2:58 PM, Martin Steigerwald <Martin@lichtvoll.de> wrote: > Am Sonntag, 17. Juni 2012 schrieb jdow: > | JXFS 64 bit file system > | > | With AmigaOS 4.x a new file system has been introduced called JXFS. It is > | a totally new 64 bit file system that supports partitions up to 16 TB in > | size. It is a modern journalling file system, which means that it reduces > | data loss if data writes to the disk are interrupted. It is the fastest > | and most reliable file system ever created for AmigaOS. > > http://www.amigaos.net/content/1/features > > Well I asked AmigaOS 4 developers about this issue as well. Lets see what > they say about 2 TB limits.
16 TB = 2 TB * 8. Perhaps they increased the block size from 512 to 4096?
block/partitions/amiga.c reads the block size from RigidDiskBlock.rdb_BlockBytes, but after conversion to 512-byte blocks, all further calculations are done on "int", so it will overflow for disks larger than 2 TiB.
Note that in your profile-binary.img, the field is 0x200, i.e. 512 bytes per block, so I'll have to get a deeper look into your RDB first...
Gr{oetje,eeting}s,
Geert
-- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
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