The following is an analysis record:
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The parameters of the above command can be extracted from the Ubifs mount information:
Ubi:attaching Mtd5 to Ubi0
Ubi:physical eraseblock size:131072 bytes (+ KiB)//-P: Physical Erase block size
Ubi:logical eraseblock size:129024 Bytes//-E: Logical erase block Size (leb size)
Ubi:smallest Flash I/O unit:2048//-M: Page size
Ubi:sub-page size:512/s: Minimum hardware input/output page size
Ubi:vid Header offset:512 (aligned 512)
Ubi:data offset:2048
Ubi:attached Mtd5 to Ubi0
UBI:MTD device Name: "File System-1"
UBI:MTD Device size:162 MiB
Ubi:number of good pebs:1295//-C: Maximum number of logical erase blocks, typically less than or equal to block count-1
Ubi:number of Bad pebs:1//-c:162*1024*1024/129024 = 1316, 162*1024*1024/(128*1024) = 1296 (Error!!!) ）
In our case, the file system can access up to 129024*812=100m space on the volume (feasible!!!) ）
Ubi:max. Allowed volumes:128
Ubi:wear-leveling threshold:4096
Ubi:number of Internal volumes:1
Ubi:number of User Volumes:1
Ubi:available pebs:0
Ubi:total number of reserved pebs:1295
Ubi:number of PEBs reserved for bad PEB handling:12
Ubi:max/mean Erase counter:2/0
Ubi:image sequence number:936292432
Ubi:background thread "ubi_bgt0d" started, PID 471
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Ubifs:recovery needed
Ubifs:recovery completed
ubifs:mounted UBI device 0, Volume 0, name "Rootfs"
Ubifs:file system size:163602432 Bytes (159768 KiB, 156 MiB, 1268 Lebs)
Ubifs:journal size:9033728 bytes (8822 KiB, 8 MiB, Lebs)
Ubifs:media format:w4/r0 (Latest is w4/r0)
Ubifs:default Compressor:lzo
ubifs:reserved for root:0 bytes (0 KiB)
vfs:mounted Root (ubifs filesystem) on device 0:12.
Freeing Init memory:164k
Failed to Execute/init. Attempting defaults ...
Init:version 2.86 booting
Starting udevtar:removing leading '/' from member names
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Cd/devkit8500d/work
/devkit8500d/tools/bin/mkfs.ubifs-r rootfs-m 2048-e 129024-c 1996-o ubifs.img
# ubifs File system image produced by the mkfs.ubifs command can be burned to NAND flash using UBI write command under U-boot
# Use the ubinize command to produce a ubi format image of the actual free space so that the file system image can be written to the board via the Ubiformat command:
# ubinize, with Ubi file system mirrored volume label
/devkit8500d/tools/bin/ubinize-o ubi.img-m 2048-p 128kib-s 512/devkit8500d/tools/bin/ubinize.cfg
#/devkit8500d/tools/bin/ubinize-o ubi.img-m 2048-p 128kib-s 512-o 2048/devkit8500d/tools/bin/ubinize.cfg
cp/devkit8500d/work/ubi.img/mnt/hgfs/ubuntu10.04/dyz/omap3devkit8500/image/
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/devkit8500d/tools/bin/mkfs.ubifs-m 2048-c 1296-e 129024-r/devkit8500d/work/rootfs-o ubifs.img
/devkit8500d/tools/bin/ubinize-o ubi.img-m 2048-p 128kib-s 512/devkit8500d/tools/bin/ubinize.cfg
Error occurred:
...
UBIFS error (PID 1): Ubifs_get_sb:cannot open "Ubi0:rootfs", error-19
Vfs:cannot Open Root Device "Ubi0:rootfs" or Unknown-block (0,0)
Please append a correct "root=" boot option; Here is the available partitions:
1f00 mtdblock0 (driver?)
...
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Modify the Ubinize.cfg file
[Ubifs]
Mode=ubi
Image=ubifs.img
Vol_id=0
Vol_size=162mib
Vol_type=dynamic
Vol_name=rootfs
Vol_flags=autoresize
Results:
Failed!!!
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Reference information for successful times
Omap_vout omap_vout:: Registered and initialized video device 1
ubifs:mounted UBI device 0, Volume 0, name "Rootfs"
Ubifs:file system size:163602432 Bytes (159768 KiB, 156 MiB, 1268 Lebs)//1268 Lebs very IMPORTANT!!!
Ubifs:journal size:9033728 bytes (8822 KiB, 8 MiB, Lebs)
Ubifs:media format:w4/r0 (Latest is w4/r0)
Ubifs:default Compressor:lzo
ubifs:reserved for root:0 bytes (0 KiB)
vfs:mounted Root (ubifs filesystem) on device 0:12.
Freeing Init memory:164k
Failed to Execute/init. Attempting defaults ...
Init:version 2.86 booting
Starting udevtar:removing leading '/' from member names
Re-run:
/devkit8500d/tools/bin/mkfs.ubifs-m 2048-c 1268-e 129024-r/devkit8500d/work/rootfs-o ubifs.img
/devkit8500d/tools/bin/ubinize-o ubi.img-m 2048-p 128kib-s 512/devkit8500d/tools/bin/ubinize.cfg
Results:
Failed!!!
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/devkit8500d/tools/bin/mkfs.ubifs-m 2048-c 812-e 129024-r/devkit8500d/work/rootfs-o ubifs.img
/devkit8500d/tools/bin/ubinize-o ubi.img-m 2048-p 128kib-s 512/devkit8500d/tools/bin/ubinize.cfg
Success, or the problem of-C
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Ubi file system production, or "-C" option problem
