Hi Everyone,
I have a server that I recently applied all updates to to bring it to
1804. After rebooting the server, it would no longer boot and is
instead dropping into a dracut shell. Here's a snippet of the output
printed to the console (lines will likely wrap):
[ 184.163787] dracut-initqueue[256]: Warning: dracut-initqueue timeout - starting timeout scripts
[ 184.672525] dracut-initqueue[256]: Warning: dracut-initqueue timeout - starting timeout scripts
[ 185.183111] dracut-initqueue[256]: Warning: dracut-initqueue timeout - starting timeout scripts
[ 185.183395] dracut-initqueue[256]: Warning: Could not boot.
[ 185.281196] dracut-initqueue[256]: Warning: /dev/centos_webman03/root does not exist
[ 185.282204] dracut-initqueue[256]: Warning: /dev/centos_webman03/swap does not exist
[ 185.283205] dracut-initqueue[256]: Warning: /dev/mapper/centos_webman11-root does not exist
Starting Dracut Emergency Shell...
Warning: /dev/centos_webman03/root does not exist
Warning: /dev/centos_webman03/swap does not exist
Warning: /dev/mapper/centos_webman11-root does not exist
Generating "/run/initramfs/rdsosreport.txt"
Entering emergency mode. Exit the shell to continue.
Type "journalctl" to view system logs.
You might want to save "/run/initramfs/rdsosreport.txt" to a USB stick or /boot
after mounting them and attach it to a bug report.
dracut:/#
After some monkeying around with the minimal ISO and rescue mode and
google searches, I finally found the combination of commands I needed
to get the system to find the "missing" devices and finish booting:
dracut:/# lvm vgchange -a y
6 logical volume(s) in volume group "centos_webman11" now active
dracut:/# ln -s /dev/mapper/centos_webman11-root /dev/root
dracut:/# exit
logout
[ 469.036109] dracut-initqueue[256]: Warning: Not all disks have been found.
[ 469.037349] dracut-initqueue[256]: Warning: You might want to regenerate your initramfs.
[ OK ] Started Plymouth switch root service.
[ OK ] Started Cleanup udevd DB.
[ OK ] Reached target Switch Root.
Starting Switch Root...
Welcome to CentOS Linux 7 (Core)!
[snip]
Re-runining grub2-mkconfig doesn't fix the issue: rebooting the server
still resulted in it dropping into a dracut shell. I tried reinstalling
grub2 and that didn't fix it either.
How do I fix this problem? Does anyone have any idea about what caused
this in the first place?
--
Ranbir
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