Re: Had a major issue with machine not booting fully.

On 27 May 2026 at 7:43, Sam Varshavchik wrote:

From:	Sam Varshavchik <[email protected]>
To:	Community support for Fedora users <[email protected]>
Subject:	Re: Had a major issue with machine not booting fully.
Date sent:	Wed, 27 May 2026 07:43:16 -0400
Send reply to:	Community support for Fedora users <[email protected]>

> Michael D. Setzer II via users writes:
> 
> > Had a typhoon go thru, and power was out for 6 days.
> > All but one machine came up, but power is still having lots of
> > issues.
> >
> > The one machine that wasn't booting had its power supply get fired,
> > but replacing it got machine to start booting, but would just hang.
> > Would not boot from default kernel or others, and not with rescue.
> > Machine would boot fine from my g4l kernel and its initramfs with
> > no problem. So grub is working. Ran fsck on all the partitions, and
> > it fixed some minor things on some. But reboot still was hanging.
> 
Did bit level copies of partitions sda1 sda2 and sda3 (/boot swap / )
so should be no corruption in any files. The G4L files boot just fine, 
but it is a smple kernel and initramfs boot. Doesn't use UUID or 
other things.

Changed fstab to make sure all blkids match from partitions.
Machine 103 has duplicate partition except for the /home partition.

> There's no such thing as "minor things" when it comes to filesystem  
> corruption, especially when it results from a power loss.
> 
> Your filesystem suffered unknown corruption and damage. The list of possible  
> reasons why the system fails to boots is an infinite list.
> 
> Your only realistic option for you is to boot from a live image, mount the  
> partitions, copy whatever files you find, and need, to a USB stick, then  
> reformat and reinstall from scratch.
> 
> Don't be surprised if you find that some of the files are bad, and are  
> filled in whole or in part with random binary garbage. Take that  
> observation, apply it to the kernel, the ramdisk, and everything you find  
> in /bin and lib(64)?, and you pretty much have a good idea of what's  
> happening.
>
 
> When things are back to normal, consider investing in a UPS, that will give  
> your systems time to shut down normally in the event of a power loss.
> 
Machines all have UPS units, but typhoon had power or for 6 days. 
Even now the system has outages. On this notebook, I create a full 
disk image of drive about once a month. My G4L takes the 1TB 
boot drive /dev/sdb and creates a raw image file of about 70G 
containing all the data of partition in about 30 minutes.

sfdisk -l /dev/sdb
Disk /dev/sdb: 953.87 GiB, 1024209543168 bytes, 2000409264 
sectors
Disk model: Fanxiang S101Q 1
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 70647742-8953-40B3-8BDE-1C14F7B6D51B

Device          Start        End    Sectors   Size Type
/dev/sdb1        2048    1230847    1228800   600M EFI System
/dev/sdb2     1230848    4376575    3145728   1.5G Linux filesystem
/dev/sdb3     4376576  192071679  187695104  89.5G Linux 
filesystem
/dev/sdb4   192071680 1590808575 1398736896   667G Linux 
filesystem
/dev/sdb5  1590808576 2000408575  409600000 195.3G Linux 
filesystem

Latest image file.
68640583757 Apr 26 16:35 /data2/sdb-zst-test2.zst

Looks like time to create a new one.

Again, Thanks for info.

> 


+------------------------------------------------------------+
 Michael D. Setzer II - Computer Science Instructor (Retired)     
 mailto:[email protected]                            
 mailto:[email protected]
 mailto:[email protected]
 Guam - Where America's Day Begins                        
 G4L Disk Imaging Project maintainer 
 http://sourceforge.net/projects/g4l/
+------------------------------------------------------------+



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