UBIFS
From Openmoko
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With kernel 2.6.32
1) booting 2.6.32 kernel on uSD http://build.shr-project.org/tests/mrmoku/2.6.32/images/om-gta02/ download uImage to /boot download modules and untar it to / update uImage link in /boot
2) flash image flash_eraseall /dev/mtd6 nandwrite -p /dev/mtd6 shr-full-eglibc-ipk--20100105-om-gta02.rootfs.ubi (almost the same ubinized image will finish build in few mins as http://build.shr-project.org/shr-unstable/images/om-gta02/shr-full-eglibc-ipk--20100105-om-gta02.rootfs.ubi)
3) then test if it works ubiattach /dev/ubi_ctrl -O 2048 -m 6 mount -t ubifs ubi0:om-gta02-rootfs /media/om ls /media/om
3) update Qi with dfu-util qi built here http://build.shr-project.org/shr-unstable/images/om-gta02/ is still using jffs2 in kernel params but you can use the binary from here http://jama.homelinux.org/org.openembedded.shr.images/om-gta02/qi-s3c2442-1.0.2+gitr0+c38b062a609f1442e6a9e13005cfbdfd59a5ac0d.udfu or build Qi yourself with bitbake from latest shr/merge branch + this patch: http://jama.homelinux.org/org.openembedded.shr.images/om-gta02/0014-qi-update-kernel-params-for-ubi-rootfs.patch
4) flash 2.6.32 also to NAND
5) boot it, test it, play with it
(Written by Martin Jansa [1])
Performance
UBIFS
max_posedon provided some bonnie++ results from UBI (http://pastebin.ca/1739342) using kernel 2.6.29
root@localhost / $ bonnie\+\+ -u 0:0
Using uid:0, gid:0.
Writing with putc()...done
Writing intelligently...done
Rewriting...done
Reading with getc()...done
Reading intelligently...done
start 'em...done...done...done...
Create files in sequential order...done.
Stat files in sequential order...done.
Delete files in sequential order...done.
Create files in random order...done.
Stat files in random order...done.
Delete files in random order...done.
Version 1.03c ------Sequential Output------ --Sequential Input- --Random-
-Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP
localhost 300M 1512 72 4878 60 2696 58 1587 98 5519 96 640.6 96
------Sequential Create------ --------Random Create--------
-Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP
16 889 98 2619 99 802 95 883 97 15728 87 640 98
localhost,300M,1512,72,4878,60,2696,58,1587,98,5519,96,640.6,96,16,889,98,2619,99,802,95,883,97,15728,87,640,98
JFFS2
Latest 2.6.29-andy-tracking with jffs2 and SHR-testing (by Dima Kogan[2])
Using uid:0, gid:0.
Writing with putc()...done
Writing intelligently...done
Rewriting...done
Reading with getc()...done
Reading intelligently...done
start 'em...done...done...done...
Create files in sequential order...done.
Stat files in sequential order...done.
Delete files in sequential order...done.
Create files in random order...done.
Stat files in random order...done.
Delete files in random order...done.
Version 1.03c ------Sequential Output------ --Sequential Input- --Random-
-Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP
om-gta02 300M 844 96 1552 92 1550 94 1508 96 4252 92 462.4 94
------Sequential Create------ --------Random Create--------
-Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP
16 174 68 17360 99 275 92 208 80 18970 99 236 79
om-gta02,300M,844,96,1552,92,1550,94,1508,96,4252,92,462.4,94,16,174,68,17360,99,275,92,208,80,18970,99,236,79
Please run bonnie++ on jffs2 if you have jffs2 partition (bonnie++ is now in shr-unstable feeds).
