[BlueOnyx:13558] Re: Crashed drive

[Gregg K]

Thanks for the replies.  I ended up installing a new BO and setting up all
users.  My fault for not having a recent backup.  I never thought I would
have a raid go out on me like that.

I was never able to check to see if I could load the disk partitions. When I
loaded the system with a rescue disk I could sometime see the drives, maybe
sdb1 and sdb2 but I was never able to load them, some kind of LVM error.
Because of those LVM issues this time around on one of the new installs I
just did the install without LVM.  What is your recommendations on new
installs? And why are LVMs so difficult to deal with after a crash?

 

From: blueonyx-bounces at mail.blueonyx.it
[mailto:blueonyx-bounces at mail.blueonyx.it] On Behalf Of Chuck Tetlow
Sent: Thursday, August 15, 2013 8:50 PM
To: BlueOnyx General Mailing List
Subject: [BlueOnyx:13550] Re: Crashed drive

 

I went through the exact same thing just recently Gregg.  Hit one of my
customers on two BX servers, but not three others - after a power outage
long enough that the UPSes failed. 

It appeared the kernel had updated, but without updating everything.  I'm
not sure if the problem was the difference in the /boot/grub/grub.conf file
versus the /etc/grub.conf file.  Or if it was the startup files in /boot/
that load the LVM drivers so the kernel can boot from the LVM partition. 

But I found a simple fix.  Boot with the rescue disk and mount the
partitions.  Go into the /boot/grub/grub.conf file.  Remove the "hiddenmenu"
command.  Save and reboot. 

Now when you try to boot the machine - the Grub boot menu will come up.
Select the oldest kernel and boot it.  That one SHOULD work.  Once you've
got the machine running, you can repair the /boot/grub/grub.conf file, its
drivers in the /boot directory, and the /etc/grub.conf file.  Then the
latest kernel should boot. 


Have you seen that one before Michael?? 



Chuck 



---------- Original Message ----------- 
From: "Gregg K" <greggk1 at cox.net> 
To: "'BlueOnyx General Mailing List'" <blueonyx at mail.blueonyx.it> 
Sent: Thu, 15 Aug 2013 20:28:17 -0700 
Subject: [BlueOnyx:13549] Re: Crashed drive 

> Sorry about the lack of information earlier, I wrote from my phone.   It
is 
> stalling with the kernel panic when it's trying to load the LVM volume.
On 
> a rescue cd I can't see the hard drive.  I assume the the LVM volume is 
> corrupt, it won't load the /home directory. 
> 
> > -----Original Message----- 
> > From: blueonyx-bounces at mail.blueonyx.it [mailto:blueonyx- 
> > bounces at mail.blueonyx.it] On Behalf Of Michael Stauber 
> > Sent: Thursday, August 15, 2013 7:52 PM 
> > To: BlueOnyx General Mailing List 
> > Subject: [BlueOnyx:13548] Re: Crashed drive 
> > 
> > Hi Greg, 
> > 
> > > I had major hard drive issues today. Now that I'm back up I have two 
> > > BOs that will not boot. They have kernel panic. What can I do?  I 
> > > downloaded a rescue cd but I still can't do a check disk on the drive.

> > > Please give me some ideas. Thanks 
> > 
> > I'm sorry to hear that. But that's not much information to assist you 
> > with. When does the kernel panic happen? Right after boot, or when 
> > starting services. Does it always happen after starting the same 
> > service(s) or randomly? 
> > 
> > What's the matter with the rescue CD? When you boot with the BlueOnyx CD

> > inserted, you can choose the "Rescue Mode" option (second option from 
> > the bottom). 
> > 
> > That will boot a live-cd image which allows you to choose language and 
> > keyboard settings, allows you to configure the network and gives you the

> > option to mount the disks. 
> > 
> > If you mount the disks, you can use "chroot /mnt/sysimage" afterwards to

> > work on the disks as if you had booted off them directly. Well - almost.

> > But it allows you to install/uninstall stuff or to modify files or do 
> > some diagnostics. 
> > 
> > 
> > One of the diagnostics I'd run is an "rpm -Va" to see which files were 
> > modified from their original RPM provided state. This usually shows all 
> > the modified config files, but if it shows modified binaries, then 
> > that's often (but not always) a good indication that something might be 
> > wrong with that file. 
> > 
> > The question would also be if the kernel panics happen while you're in 
> > rescue mode. 
> > 
> > Although Kernel panics can be software related it's more common to see 
> > them when there is flaky hardware. A screenshot of the error message 
> > during a kernel panic could be helpful to troubleshoot this further. 
> > 
> > -- 
> > With best regards 
> > 
> > Michael Stauber 
> > _______________________________________________ 
> > Blueonyx mailing list 
> > Blueonyx at mail.blueonyx.it 
> > http://mail.blueonyx.it/mailman/listinfo/blueonyx 
> 
> _______________________________________________ 
> Blueonyx mailing list 
> Blueonyx at mail.blueonyx.it 
> http://mail.blueonyx.it/mailman/listinfo/blueonyx 
------- End of Original Message ------- 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.blueonyx.it/pipermail/blueonyx/attachments/20130816/2bafb5e6/attachment.html>