[Cialug] Spontaneous Outbreak of Read-Only-ness

[Rob Cook]

Like the others have said I've too encountered RO on my Cent6 box before,
hope you have backups... I ended up replacing drives.

On Wed, Feb 24, 2016 at 11:56 AM, Kelly Slaugh <KSlaugh at studentloan.org>
wrote:

> I've ran into RO systems because of a fault in the hardware/drives
> themselves. Just an idea, if the system is setup to check the disks during
> reboot, that may be why it worked after. Check you dmesg logs for boot
> errors.
>
> Look into how to run the command "fsck"
>
> Run the command - "man fsck"
>
> Read up about it, do not run fsck on a system that has mounted drives, you
> will need to put the system into runlevel 1 to properly run the fsck
> command.
>
> Good luck Todd,
>
> ~Rabid_Gerbil
>
> -----Original Message-----
> From: cialug-bounces at cialug.org [mailto:cialug-bounces at cialug.org] On
> Behalf Of Todd Walton
> Sent: Wednesday, February 24, 2016 11:24 AM
> To: Central Iowa Linux Users Group
> Subject: [Cialug] Spontaneous Outbreak of Read-Only-ness
>
> I've had two weird read-only-izings happen in the past 24 hours.
>
> First, a RHEL 6 box: Found I couldn't write files to /tmp, even as root.
> Further poking revealed that I couldn't write to / either. 'cat
> /proc/mounts' said / was rw. Changing SELinux to permissive didn't help.
> Rebooted. All is well.
>
> Then, a CentOS 6 box: Tried to update root password. It took the password
> twice and then said "passwd: Authentication token manipulation error". I
> tried to mv the shadow file, thinking maybe I'd re-shadow passwd, but it
> wouldn't let me move it because... read-only filesystem. Again, 'cat
> /proc/mounts' showed that that should not have been the case. I rebooted
> and all is now well.
>
> I can't troubleshoot these further right now because I made the problem go
> away. But anybody seen this before?
>
> --
> Todd
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