OpenWrt Forum Archive

Topic: Mount drive: the device path will change once every half an hour,why?

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Post #1
peaktwowood
31 Jan 2015, 06:23

I tried replacing the hard drive box and other hard disk, but does not solve the problem.

openwrt discriminated the path of hard device was '/dev/sda',After about half an hour the path becomes '/dev/sdb',After about

half an hour the path becomes '/dev/sdc' again.

My hard disk: ext4, 250gb (independent power supply)

openwrt:    Barrier Breaker 14.07
                  Released: Thu, 02 Oct 2014

===============================================================
My English is poor, please forgive me, thank you.

Post #2
tmo26
31 Jan 2015, 07:22

What do logread / dmesg say?

Post #3
peaktwowood
31 Jan 2015, 14:42
tmo26 wrote:

What do logread / dmesg say?



[11535.850000] usb 1-1: USB disconnect, device number 2
[11535.860000] usblp0: removed
[11604.270000] usb 1-1: new full-speed USB device number 3 using ehci-platform
[11604.450000] usblp 1-1:1.0: usblp0: USB Bidirectional printer dev 3 if 0 alt 0 proto 2 vid 0x04B8 pid 0x0005
[15706.840000] usb 1-1: USB disconnect, device number 3
[15706.840000] usblp0: removed
[15744.910000] usb 1-1: new high-speed USB device number 4 using ehci-platform
[15745.070000] hub 1-1:1.0: USB hub found
[15745.070000] hub 1-1:1.0: 4 ports detected
[15754.800000] usb 1-1.4: new high-speed USB device number 5 using ehci-platform
[15754.940000] usb-storage 1-1.4:1.0: USB Mass Storage device detected
[15754.940000] scsi0 : usb-storage 1-1.4:1.0
[15757.460000] scsi 0:0:0:0: Direct-Access     ATA      ST9250827AS      A    PQ: 0 ANSI: 6
[15757.480000] sd 0:0:0:0: Attached scsi generic sg0 type 0
[15757.480000] sd 0:0:0:0: [sda] 488397168 512-byte logical blocks: (250 GB/232 GiB)
[15757.490000] sd 0:0:0:0: [sda] Write Protect is off
[15757.500000] sd 0:0:0:0: [sda] Mode Sense: 43 00 00 00
[15757.500000] sd 0:0:0:0: [sda] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
[15757.660000]  sda: unknown partition table
[15757.670000] sd 0:0:0:0: [sda] Attached SCSI disk
[16152.330000] EXT4-fs (sda): mounted filesystem with ordered data mode. Opts:
[16471.640000] usb 1-1.4: USB disconnect, device number 5
[16471.900000] usb 1-1.4: new high-speed USB device number 6 using ehci-platform
[16472.050000] usb-storage 1-1.4:1.0: USB Mass Storage device detected
[16472.050000] scsi1 : usb-storage 1-1.4:1.0
[16474.580000] scsi 1:0:0:0: Direct-Access     ATA      ST9250827AS      A    PQ: 0 ANSI: 6
[16474.600000] sd 1:0:0:0: Attached scsi generic sg0 type 0
[16474.600000] sd 1:0:0:0: [sdb] 488397168 512-byte logical blocks: (250 GB/232 GiB)
[16474.610000] sd 1:0:0:0: [sdb] Write Protect is off
[16474.620000] sd 1:0:0:0: [sdb] Mode Sense: 43 00 00 00
[16474.620000] sd 1:0:0:0: [sdb] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
[16474.770000]  sdb: unknown partition table
[16474.780000] sd 1:0:0:0: [sdb] Attached SCSI disk
[16694.060000] EXT4-fs warning (device sda): __ext4_read_dirblock:908: error reading directory block (ino 2, block 0)
[16698.040000] Buffer I/O error on device sda, logical block 30441472
[16698.040000] lost page write due to I/O error on sda
[16698.050000] JBD2: Error -5 detected when updating journal superblock for sda-8.

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