關鍵詞:ARM Linux YAFFS2 抵岸科技
YAFFS2文件系統在做了創建、刪除等操作後，下次開出現N多Partially written block X detected打印信息。顯示如下：
Creating 6 MTD partitions on "atmel_nand":
0x000000000000-0x000000020000 : "bootstrap"
0x000000020000-0x000000060000 : "uboot"
0x000000060000-0x000000080000 : "env1"
0x000000080000-0x0000000a0000 : "env2"
0x0000000a0000-0x0000002a0000 : "linux"
0x0000002a0000-0x000008000000 : "root"
usbmon: debugfs is not available
ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
at91_ohci at91_ohci: AT91 OHCI
at91_ohci at91_ohci: new USB bus registered, assigned bus number 1
at91_ohci at91_ohci: irq 20, io mem 0x00500000
usb usb1: configuration #1 chosen from 1 choice
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 2 ports detected
Initializing USB Mass Storage driver...
usbcore: registered new interface driver usb-storage
USB Mass Storage support registered.
udc: at91_udc version 3 May 2006
mice: PS/2 mouse device common for all mice
rtc-at91sam9 at91_rtt.0: rtc core: registered at91_rtt as rtc0
IRQ 1/rtc0: IRQF_DISABLED is not guaranteed on shared IRQs
rtc-at91sam9 at91_rtt.0: rtc0: SET TIME!
Registered led device: ds5
Registered led device: ds1
usbcore: registered new interface driver usbhid
usbhid: v2.6:USB HID core driver
Advanced Linux Sound Architecture Driver Version 1.0.20.
ALSA device list:
No soundcards found.
TCP cubic registered
NET: Registered protocol family 17
RPC: Registered udp transport module.
RPC: Registered tcp transport module.
rtc-at91sam9 at91_rtt.0: hctosys: unable to read the hardware clock
yaffs: dev is 32505861 name is "mtdblock5"
yaffs: passed flags ""
yaffs: Attempting MTD mount on 31.5, "mtdblock5"
Partially written block 53 detected
Partially written block 53 detected
Partially written block 53 detected
Partially written block 53 detected
Partially written block 53 detected
Partially written block 53 detected
Partially written block 53 detected
Partially written block 53 detected
Partially written block 53 detected
Partially written block 53 detected
Partially written block 53 detected
Partially written block 53 detected
Partially written block 53 detected
Partially written block 53 detected
Partially written block 53 detected
Partially written block 53 detected
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Partially written block 53 detected
Partially written block 53 detected
Partially written block 51 detected
Partially written block 51 detected
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Partially written block 51 detected
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Partially written block 51 detected
Partially written block 51 detected
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Partially written block 51 detected
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Partially written block 51 detected
Partially written block 51 detected
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Partially written block 51 detected
Partially written block 51 detected
Partially written block 51 detected
Partially written block 51 detected
Partially written block 51 detected
Partially written block 51 detected
Partially written block 51 detected
Partially written block 51 detected
Partially written block 51 detected
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Partially written block 51 detected
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Partially written block 51 detected
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Partially written block 51 detected
Partially written block 51 detected
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Partially written block 50 detected
Partially written block 50 detected
Partially written block 50 detected
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Partially written block 50 detected
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Partially written block 49 detected
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Partially written block 49 detected
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Partially written block 49 detected
Partially written block 49 detected
Partially written block 49 detected
Partially written block 49 detected
Partially written block 49 detected
Partially written block 49 detected
Partially written block 49 detected
Partially written block 49 detected
Partially written block 49 detected
Partially written block 49 detected
Partially written block 49 detected
Partially written block 49 detected
Partially written block 49 detected
Partially written block 49 detected
yaffs_read_super: isCheckpointed 0
VFS: Mounted root (yaffs2 filesystem) on device 31:5.
Freeing init memory: 116K
running /etc/init.d/rcS
mount -t proc proc /proc
mount -t sysfs /sys /sys
解決方法：
方法一，修改 yaffs_fs.c 中 yaffs_auto_checkpoint 改成 值 2
方法二，修改fs/yaffs2/yaffs_guts.cstatic int yaffs_ScanBackwards(yaffs_Device * dev) 函數中
在
。。。。
T(YAFFS_TRACE_ALWAYS, /*YAFFS_TRACE_SCAN*/
(TSTR("Partially written block %d detected" TENDSTR),
blk));
。。。。
報錯是由於YAFFS_TRACE_ALWAYS造成的。只要把它改成YAFFS_TRACE_SCAN 就OK了
