Hi all

 

I have been using Unraid for years and I just had my first kernel panic. Let me know if anyone knows how to fix this issue.

 

Thanks

 

 

/dev/root: Can't open blockdev
UFS: Cannot open root device
"(null)" or unknown-Block(0,0): error
Please append a correct
"root=" boot option: here are the available partitions:
0800
1957888 sda
driver: sd
0801
1957872 sda1 c3072e18-01
Kernel panic
- not syncing: UFS: Unable to mount root fs on unknown-block(0,0)
CPU: 7 PID: 1 Comm: swapper/O Not tainted 5.10.28-Unraid #1
Hardware name: Supermicro X8DTL/X8DTL, BIOS 2.1b
11/16/2012
Call Trace:
dump_stack+0x6b/0x83
panic+Oxff/OxZa1
mount block root+0x2fd/0x30c
? rest init+Oxaf/Oxaf
prepare_namespace+0x131/0x160
? rest init+Oxaf/Oxaf
kernel_init+0x5/Oxfa
ret from fork+0x22/0x30
Kernel Offset: disabled
.-[ end Kernel panic - not syncing: VTS: Unable to mount root fs on unknown-blo
Ek(0,0) ]--

 

 

SOLUTION

 

1. Downloaded a copy of the 6.9.2 files
2. Manually copied over all the bz* files
3. Also moved the "syslinux.cfg-" file back into the syslinux folder; for some reason it had moved out to the main directory
4. Reboot
5. Relish

 

Now I just need to find a good way to automate backups of my flash drive

Edited February 15, 20224 yr by IoTBoI
bz* syntax

I am guessing this is preventing you from even booting Unraid? You don't say.

 

Do you have a flash backup?

The screenshot shows a failure reading off the flash drive.

 

sometimes rewriting all the bz* type files for the release on the flash drive fixes this type of problem.

You are correct. Unraid will not boot into either the GUI or safemode GUI. Unfortunately, I have no backup. I had been only backing up my appdata.

46 minutes ago, itimpi said:

The screenshot shows a failure reading off the flash drive.

 

sometimes rewriting all the bz* type files for the release on the flash drive fixes this type of problem.

 

Well this worked.  I will edit my original post to mark as solved. Thanks!!!

23 minutes ago, IoTBoI said:

Unfortunately, I have no backup

You must always have a current backup of flash. 

 

Main - Boot Device - Flash - Flash Backup

11 minutes ago, trurl said:

You must always have a current backup of flash. 

 

Definitely a lesson learned. Any suggestions for backing up the flash?

6 minutes ago, IoTBoI said:

Any suggestions for backing up the flash?

 

18 minutes ago, trurl said:

Main - Boot Device - Flash - Flash Backup

 

Nice. Thanks!