[CentOS] tune2fs: Filesystem has unsupported feature(s) while trying to open

Sat Apr 30 18:29:00 UTC 2016
Valeri Galtsev <galtsev at kicp.uchicago.edu>

On Sat, April 30, 2016 1:19 pm, Alice Wonder wrote:
> On 04/30/2016 11:06 AM, Valeri Galtsev wrote:
>> On Sat, April 30, 2016 12:56 pm, William Warren wrote:
>>> ALL systems need patching so obsessing about uptime is insecurity on
>>> its
>>> face.  It doe not matter if it is windows or linux or anything else.
>> As I said, I feel I hear MS Widows admins on this list. There are only
>> two
>> things that require reboot in UNIX and Linux Worlds. Kernel patches or
>> rather installation of patched kernel (and again, no splice or similar
>> on
>> my servers), and libc or glibc (as all and everything is linked to
>> libc/glibc, so it is virtually impossible to swap over to patched
>> libc/glibc in RAM).
>> All other updates/patches do not require reboot (at least for those who
>> know what they are doing).
>> Just my $0.02.
>> Valeri
> I like to reboot every few months just to make sure all the services
> that are suppose to come up do come up, so that if it unexpectedly goes
> down and is brought back up automatically, it is more likely to function
> as it should.
> But that has nothing to do with patches.

I guess, I was trying to stress my point wrong way (or to stress wrong
point). I probably should have asked:

How many users do you have to see logged into your server to become
obsessed about not rebooting it? Or: do users on your number crunchers
ever run jobs taking a Month and longer (yes, I and my users do know about
checkpointing, still...)

But if it is single user server or laptop, who cares, right? On the other
hand, who would care even to mention it?

Just my humble point of view.


Valeri Galtsev
Sr System Administrator
Department of Astronomy and Astrophysics
Kavli Institute for Cosmological Physics
University of Chicago
Phone: 773-702-4247