>In message <20040422154403.6452042E2F at denx.de> you wrote: >> >> I have not measure the speed of accessing files, so have not the >> exact concept:) > >Then go back one step: before using any software, start by writing down >the requirements and specifications. > >> Now the EXT2 FS is about 13MB(whithout any applications), maybe it is >> too biger? > >No, this is not the problem. > >> Oh, I am sorry that not write the detail! Now we have two kind of >> 8XX boards, one is MPC855T board, and for low cost, we developed >> MPC852T, one use 32M DOC, another use 8MB+512KB flash. I have success >> building a EXT2 FS on DOC, and a JFFS2 FS on flash, but they all >> seems unstable when turn off/on power frequently, so I am worry now, >> and I want to know what bring on these unstable problems, our design >> problems or DOC/FS inherent bugs? > >Assuming you use recent MTD and JFFS2 code, then JFFS2 should be >absolutely stable on the 8MB flash system. > >As for ext2 on DOC: this is bounmd to fail, as ext2 was not designed >to be used in a mode where sudden power-of without previous umount can >occur. > >> Oh..., because turn off the power through hardware power switch, so >> don't remount the file system! > >This is your problem. You cannot use ext2 for such a system, then.
Thanks a lot:) ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
