USB in R/O, how to track IP ?

[gen87u]

Hello,

on my newly RT-87U with Asuswrt-Merlin 380.62_1, I just sshed and I see the usb stick in R/O, so checking :

admin@RT-AC87U-EB60:/tmp/mnt/sda1# dmesg | grep sda1
EXT3-fs (sda1): using internal journal
EXT3-fs (sda1): recovery complete
EXT3-fs (sda1): mounted filesystem with ordered data mode
Buffer I/O error on device sda1, logical block 3
lost page write due to I/O error on sda1
EXT3-fs error (device sda1): ext3_find_entry:
Buffer I/O error on device sda1, logical block 10682368
lost page write due to I/O error on sda1
Buffer I/O error on device sda1, logical block 10682369
lost page write due to I/O error on sda1
Buffer I/O error on device sda1, logical block 10682370
lost page write due to I/O error on sda1
EXT3-fs error (device sda1): read_inode_bitmap: Cannot read inode bitmap - block_group = 194, inode_bitmap = 6356993
EXT3-fs (sda1): error in ext3_new_inode: IO failure
Aborting journal on device sda1.
EXT3-fs (sda1): error: ext3_journal_start_sb: Detected aborted journal
EXT3-fs (sda1): error: remounting filesystem read-only
EXT3-fs error (device sda1): ext3_find_entry: reading directory #2 offset 0
EXT3-fs error (device sda1): ext3_find_entry: reading directory #1589255 offset 0
admin@RT-AC87U-EB60:/tmp/mnt/sda1# fsck.ext3 /mnt/sda1
e2fsck 1.42.13 (17-May-2015)
fsck.ext3: Is a directory while trying to open /mnt/sda1

The superblock could not be read or does not describe a valid ext2/ext3/ext4
filesystem. If the device is valid and it really contains an ext2/ext3/ext4
filesystem (and not swap or ufs or something else), then the superblock
is corrupt, and you might try running e2fsck with an alternate superblock:
e2fsck -b 8193 <device>
or
e2fsck -b 32768 <device>

Which command should I use (64 Go USB stick, I had to use a notepad cooler or it stopped working du to the heat) ?

Also, I would like to track when IP goes up or down, what is the best solution to do this ?

Last question, how to shutdown properly ? There is no "shutdown" command, and "reboot -p" doesnt seem to work either.

Thanks for your help.

 

[ColinTaylor]

admin@RT-AC87U-EB60:/tmp/mnt/sda1# fsck.ext3 /mnt/sda1

Wrong. Use this instead.

cd /
umount /dev/sda1
fsck.ext3 /dev/sda1
reboot

Also, I would like to track when IP goes up or down, what is the best solution to do this ?

You can't.

Last question, how to shutdown properly ? There is no "shutdown" command, and "reboot -p" doesnt seem to work either.

Unmount the USB device and then disconnect the power.

 

[gen87u]

Wrong. Use this instead.

cd /
umount /dev/sda1
fsck.ext3 /dev/sda1
reboot

You can't.

Unmount the USB device and then disconnect the power.

My bad, so umount within ssh didnt work. It worked with the webui.

But "fsck.ext3 /dev/sda1" give me a /dev/sda1 is in use, but lsof and fuser arent available to check the culprit. I switched off the RT87, and put the usb stick in a raspberry, but I get the same message with fsck ("The superblock could not be read or does not describe a valid ext2/ext3/ext4 filesystem").

I will simply format it again.

You say to shutdown properly I have to umount the USB device and disconnect power, what about the /jffs partition if a write was delayed ?

 

[ColinTaylor]

You say to shutdown properly I have to umount the USB device and disconnect power, what about the /jffs partition if a write was delayed ?

The jffs filesystem is designed to work with flash memory on devices like routers. The logging mechanism provides adequate protection for such a device.

A router is not a PC, it is designed to be left on 24/7. It is not anticipated that it would be frequently powered on and off.