系统在以读写的方式重新挂载后起不来

pengwater

最近遇到一个很奇怪的问题，我的环境是一个arm的开发板，在终端执行一下命令后，重启，系统起不来：

mount -n -o remount,noatime,rw /
mount -n -o remount,noatime,ro /

两个命令之前没有任何操作，下面是系统日志，请各位大神帮忙分析一下，比较紧急，希望各位大神指点迷境，谢谢。

1. RomBOOT
   
2. Start AT91Bootstrap...
   
3. 
   
4. 
   
5. U-Boot 2010.06-dirty (Sep 07 2015 - 16:15:49)
   
6. 
   
7. DRAM:  32 MiB
   
8. NAND:  128 MiB
   
9. [WFOS] ADC=928, SEQ=1
   
10. [WFOS] PRODUCT_SEQ 01. HARDWARE ID 01
    
11. [WFOS] Init WFET1600XGW
    
12. In:    serial
    
13. Out:   serial
    
14. Err:   serial
    
15. Press space to abort autoboot in: 1
    
16. 
    
17. NAND read: device 0 offset 0x80000, size 0x300000
    
18. 3145728 bytes read: OK
    
19. ## Booting kernel from Legacy Image at 20600000 ...
    
20.    Image Name:   Linux-2.6.39
    
21.    Image Type:   ARM Linux Kernel Image (uncompressed)
    
22.    Data Size:    1545056 Bytes = 1.5 MiB
    
23.    Load Address: 20008000
    
24.    Entry Point:  20008000
    
25.    Verifying Checksum ... OK
    
26.    Loading Kernel Image ... OK
    
27. OK
    
28. 
    
29. Starting kernel ...
    
30. 
    
31. Uncompressing Linux... done, booting the kernel.
    
32. Linux version 2.6.39 (W08582@Debian7) (gcc version 4.7.3 (Sourcery CodeBench Lite 2013.05-24) ) #1 Wed Jul 22 09:13:15 CST 2015
    
33. CPU: ARM926EJ-S [41069265] revision 5 (ARMv5TEJ), cr=00053177
    
34. CPU: VIVT data cache, VIVT instruction cache
    
35. Machine: Atmel AT91SAM9X5-EK
    
36. Memory policy: ECC disabled, Data cache writeback
    
37. Clocks: CPU 400 MHz, master 133 MHz, main 12.000 MHz
    
38. Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 8128
    
39. Kernel command line: rootfstype=ubifs ubi.mtd=4 ro root=ubi0:rootfs mtdparts=at91_nand:128k(bootstrap),256k(u-boot),128k(u-bootenv),3072k(kernel),14m(rootfs),20m(home),66m(data0),-(data1) vlcd=0xC8 console=ttyS2 openwd
    
40. PID hash table entries: 128 (order: -3, 512 bytes)
    
41. Dentry cache hash table entries: 4096 (order: 2, 16384 bytes)
    
42. Inode-cache hash table entries: 2048 (order: 1, 8192 bytes)
    
43. Memory: 32MB = 32MB total
    
44. Memory: 29424k/29424k available, 3344k reserved, 0K highmem
    
45. Virtual kernel memory layout:
    
46.     vector  : 0xffff0000 - 0xffff1000   (   4 kB)
    
47.     fixmap  : 0xfff00000 - 0xfffe0000   ( 896 kB)
    
48.     DMA     : 0xffa00000 - 0xffe00000   (   4 MB)
    
49.     vmalloc : 0xc2800000 - 0xfee00000   ( 966 MB)
    
50.     lowmem  : 0xc0000000 - 0xc2000000   (  32 MB)
    
51.     modules : 0xbf000000 - 0xc0000000   (  16 MB)
    
52.       .init : 0xc0008000 - 0xc0024000   ( 112 kB)
    
53.       .text : 0xc0024000 - 0xc02c72a0   (2701 kB)
    
54.       .data : 0xc02c8000 - 0xc02e3f00   ( 112 kB)
    
55. NR_IRQS:192
    
56. AT91: 128 gpio irqs in 4 banks
    
57. Calibrating delay loop... 199.06 BogoMIPS (lpj=995328)
    
58. pid_max: default: 32768 minimum: 301
    
59. Mount-cache hash table entries: 512
    
60. CPU: Testing write buffer coherency: ok
    
61. NET: Registered protocol family 16
    
62. AT91: CM rev B and higher
    
63. AT91: No default serial console defined.
    
64. AT91: EK rev A
    
65. bio: create slab <bio-0> at 0
    
66. SCSI subsystem initialized
    
67. usbcore: registered new interface driver usbfs
    
68. usbcore: registered new interface driver hub
    
69. usbcore: registered new device driver usb
    
70. at_hdmac at_hdmac.0: Atmel AHB DMA Controller ( cpy slave ), 8 channels
    
71. at_hdmac at_hdmac.1: Atmel AHB DMA Controller ( cpy slave ), 8 channels
    
72. Switching to clocksource pit
    
73. NET: Registered protocol family 2
    
74. IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
    
75. TCP established hash table entries: 1024 (order: 1, 8192 bytes)
    
76. TCP bind hash table entries: 1024 (order: 0, 4096 bytes)
    
77. TCP: Hash tables configured (established 1024 bind 1024)
    
78. TCP reno registered
    
79. UDP hash table entries: 256 (order: 0, 4096 bytes)
    
80. UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
    
81. NET: Registered protocol family 1
    
82. NetWinder Floating Point Emulator V0.97 (double precision)
    
83. msgmni has been set to 57
    
84. io scheduler noop registered (default)
    
85. atmel_usart.0: ttyS0 at MMIO 0xf801c000 (irq = 5) is a ATMEL_SERIAL
    
86. atmel_usart.1: ttyS1 at MMIO 0xf8044000 (irq = 16) is a ATMEL_SERIAL
    
87. atmel_usart.2: ttyS2 at MMIO 0xfefff200 (irq = 1) is a ATMEL_SERIAL
    
88. console [ttyS2] enabled
    
89. atmel_usart.3: ttyS3 at MMIO 0xf8020000 (irq = 6) is a ATMEL_SERIAL
    
90. atmel_usart.4: ttyS4 at MMIO 0xf8024000 (irq = 7) is a ATMEL_SERIAL
    
91. atmel_usart.5: ttyS5 at MMIO 0xf8028000 (irq = 8) is a ATMEL_SERIAL
    
92. atmel_usart.6: ttyS6 at MMIO 0xf8040000 (irq = 15) is a ATMEL_SERIAL
    
93. atmel_nand atmel_nand: No DMA support for NAND access.
    
94. NAND device: Manufacturer ID: 0x98, Chip ID: 0xd1 (Toshiba NAND 128MiB 3,3V 8-bit)
    
95. atmel_pmecc_init_params
    
96. Scanning device for bad blocks
    
97. mtd_name=bootstrap,mtd_size=0x20000,offset=0x0
    
98. mtd_name=u-boot,mtd_size=0x40000,offset=0x0
    
99. mtd_name=u-bootenv,mtd_size=0x20000,offset=0x0
    
100. mtd_name=kernel,mtd_size=0x300000,offset=0x0
     
101. mtd_name=rootfs,mtd_size=0xe00000,offset=0x0
     
102. mtd_name=home,mtd_size=0x1400000,offset=0x0
     
103. mtd_name=data0,mtd_size=0x4200000,offset=0x0
     
104. mtd_name=data1,mtd_size=0x1880000,offset=0x0
     
105. 8 cmdlinepart partitions found on MTD device at91_nand
     
106. Creating 8 MTD partitions on "at91_nand":
     
107. 0x000000000000-0x000000020000 : "bootstrap"
     
108. 0x000000020000-0x000000060000 : "u-boot"
     
109. 0x000000060000-0x000000080000 : "u-bootenv"
     
110. 0x000000080000-0x000000380000 : "kernel"
     
111. 0x000000380000-0x000001180000 : "rootfs"
     
112. 0x000001180000-0x000002580000 : "home"
     
113. 0x000002580000-0x000006780000 : "data0"
     
114. 0x000006780000-0x000008000000 : "data1"
     
115. UBI: attaching mtd4 to ubi0
     
116. UBI: physical eraseblock size:   131072 bytes (128 KiB)
     
117. UBI: logical eraseblock size:    126976 bytes
     
118. UBI: smallest flash I/O unit:    2048
     
119. UBI: VID header offset:          2048 (aligned 2048)
     
120. UBI: data offset:                4096
     
121. UBI: max. sequence number:       3
     
122. UBI: attached mtd4 to ubi0
     
123. UBI: MTD device name:            "rootfs"
     
124. UBI: MTD device size:            14 MiB
     
125. UBI: number of good PEBs:        112
     
126. UBI: number of bad PEBs:         0
     
127. UBI: number of corrupted PEBs:   0
     
128. UBI: max. allowed volumes:       128
     
129. UBI: wear-leveling threshold:    4096
     
130. UBI: number of internal volumes: 1
     
131. UBI: number of user volumes:     1
     
132. UBI: available PEBs:             0
     
133. UBI: total number of reserved PEBs: 112
     
134. UBI: number of PEBs reserved for bad PEB handling: 2
     
135. UBI: max/mean erase counter: 1/0
     
136. UBI: image sequence number:  1445395432
     
137. ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
     
138. at91_ohci at91_ohci: AT91 OHCI
     
139. at91_ohci at91_ohci: new USB bus registered, assigned bus number 1
     
140. at91_ohci at91_ohci: irq 22, io mem 0x00600000
     
141. UBI: background thread "ubi_bgt0d" started, PID 205
     
142. hub 1-0:1.0: USB hub found
     
143. hub 1-0:1.0: 3 ports detected
     
144. Initializing USB Mass Storage driver...
     
145. usbcore: registered new interface driver usb-storage
     
146. USB Mass Storage support registered.
     
147. [WFOS] Hardware watchdog heartbeat 500 ms.
     
148. [WFOS] AT91 Watchdog Timer boot enabled (15 seconds, nowayout)
     
149. TCP cubic registered
     
150. NET: Registered protocol family 17
     
151. Registering the dns_resolver key type
     
152. name=ubi0:rootfs
     
153. fs_names=/init
     
154. atmel_nand atmel_nand: Too many error.
     
155. atmel_nand atmel_nand: Too many error.
     
156. atmel_nand atmel_nand: Too many error.
     
157. atmel_nand atmel_nand: Too many error.
     
158. UBI error: ubi_io_read: error -1 while reading 126976 bytes from PEB 3:4096, read 2048 bytes
     
159. UBIFS error (pid 1): ubifs_start_scan: cannot read 126976 bytes from LEB 1:0, error -1
     
160. VFS: Cannot open root device "ubi0:rootfs" or unknown-block(0,0)
     
161. Please append a correct "root=" boot option; here are the available partitions:
     
162. 1f00             128 mtdblock0  (driver?)
     
163. 1f01             256 mtdblock1  (driver?)
     
164. 1f02             128 mtdblock2  (driver?)
     
165. 1f03            3072 mtdblock3  (driver?)
     
166. 1f04           14336 mtdblock4  (driver?)
     
167. 1f05           20480 mtdblock5  (driver?)
     
168. 1f06           67584 mtdblock6  (driver?)
     
169. 1f07           25088 mtdblock7  (driver?)
     
170. Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
     
171. [<c002eca8>] (unwind_backtrace+0x0/0xe0) from [<c01fa1e4>] (panic+0x50/0x178)
     
172. [<c01fa1e4>] (panic+0x50/0x178) from [<c0008d44>] (mount_block_root+0x24c/0x2a4)
     
173. [<c0008d44>] (mount_block_root+0x24c/0x2a4) from [<c0008e8c>] (prepare_namespace+0x88/0x17c)
     
174. [<c0008e8c>] (prepare_namespace+0x88/0x17c) from [<c00089c0>] (kernel_init+0x100/0x134)
     
175. [<c00089c0>] (kernel_init+0x100/0x134) from [<c002aef8>] (kernel_thread_exit+0x0/0x8)
     

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流氓无产者

感觉要么是驱动，要么是硬件有问题
可能一回写，就导致校验或者别的什么数据结构被破坏

pengwater

回复 2# 流氓无产者

谢谢，问题解决了，是当初烧制镜像的时候出了问题，在开发板上写入rootfs.img时，没有去掉0xFF，是PMECC的原因。