Raid on a raid issue

[Harry Hoffman]

You don't have to justify what you're doing. I'm guessing Mark doesn't have experience in the .edu sector otherwise he'd know that what you describe is fairly common and many campus networks are still /16s ;-)

Cheers,
Harry

On Jul 24, 2014 3:37 PM, "Doll, Margaret Ann" <margaret_doll at brown.edu> wrote:
>
> Also, some of the software that we run is only written for the unix 
> platform, ie. a program like gaussian. 
>
>
> On Thu, Jul 24, 2014 at 3:36 PM, Doll, Margaret Ann <margaret_doll at brown.edu 
> > wrote: 
>
> > My primary function is to service unix computers within two departments. 
> > 
> > The unix computers are often used by groups of students running large 
> > programs or analyzing extremely large data sets. 
> > 
> > Samba allows Window users ( and Macs) to mount the data on the unix 
> > servers on their computers for analysis. 
> > 
> > 
> > On Thu, Jul 24, 2014 at 2:59 PM, <m.roth at 5-cent.us> wrote: 
> > 
> >> Doll, Margaret Ann wrote: 
> >> > Sometimes the su user is the owner. 
> >> > 
> >> Um... so, why are you administering his box, and why is it serving samba 
> >> across campus? That raises my serious security hackles.... 
> >> 
> >>          mark 
> >> > 
> >> > On Thu, Jul 24, 2014 at 2:51 PM, <m.roth at 5-cent.us> wrote: 
> >> > 
> >> >> Doll, Margaret Ann wrote: 
> >> >> > I created a system with three raids using the DELL configuration 
> >> tools 
> >> >> > prior to installation of the RedHat system, 6.5.  The system raid was 
> >> >> > divided up into numerous partitions for the system and four large 
> >> >> > partitions for users.  This system raid was a raid 0. 
> >> >> > 
> >> >> > After the installation samba worked.  I could log into the system 
> >> from 
> >> >> > another subnet. 
> >> >> > 
> >> >> > Then a user with su privileges, took the four large partitions on the 
> >> >> > system raid and made them into another raid using mdadm --create and 
> >> >> > mdadm--assemble. 
> >> >> > 
> >> >> > Now the ssh connections from across the subnets time out.  Samba 
> >> fails 
> >> >> > with "NT_STATUS_ACCESS_DENIED."  I can't even ping the system from 
> >> >> across 
> >> >> > campus. 
> >> >> > 
> >> >> > I have had to modify /etc/fstab so that the four original partitions 
> >> >> do 
> >> >> no 
> >> >> > try to mount.  The raid composed of the four partitions mounts as 
> >> >> > /dev/md127p1. 
> >> >> > 
> >> >> > Is the ssh timeout problem, ping problem and samba problem all caused 
> >> >> by 
> >> >> > the raid on raid creation?  The timing of the creation of the new 
> >> raid 
> >> >> > indicates that it is. 
> >> >> > 
> >> >> First of all, I'd take su away from the user, who doesn't know what 
> >> >> they're doing. 
> >> >> 
> >> >> Next - and I'm *really* not strong on samba - I'd assume that the 
> >> system 
> >> >> itself hasn't been reconfigured to (whatever word is used for a samba 
> >> >> export). The ID's changed, the UUID's changed, etc, etc. And, of course 
> >> >> any metadata on them is toast. I'm afraid you're going to have to 
> >> >> recreate 
> >> >> them from scratch; anything on them... hope you've got backups. 
> >> >> 
> >> >>         mark 
> >> >> 
> >> >> -- 
> >> >> redhat-list mailing list 
> >> >> unsubscribe mailto:redhat-list-request at redhat.com?subject=unsubscribe 
> >> >> https://www.redhat.com/mailman/listinfo/redhat-list 
> >> >> 
> >> > -- 
> >> > redhat-list mailing list 
> >> > unsubscribe mailto:redhat-list-request at redhat.com?subject=unsubscribe 
> >> > https://www.redhat.com/mailman/listinfo/redhat-list 
> >> > 
> >> 
> >> 
> >> -- 
> >> redhat-list mailing list 
> >> unsubscribe mailto:redhat-list-request at redhat.com?subject=unsubscribe 
> >> https://www.redhat.com/mailman/listinfo/redhat-list 
> >> 
> > 
> > 
> -- 
> redhat-list mailing list 
> unsubscribe mailto:redhat-list-request at redhat.com?subject=unsubscribe 
> https://www.redhat.com/mailman/listinfo/redhat-list