[CentOS] CentOS 7, systemd, pNFS - hosed

Tue Jun 23 21:52:26 UTC 2015
Valeri Galtsev <galtsev at kicp.uchicago.edu>

On Tue, June 23, 2015 4:24 pm, m.roth at 5-cent.us wrote:
> m.roth at 5-cent.us wrote:
>> I just updated a server that's running CentOS 7. I do have elrepo
>> enabled,
>> because this Rave computer has four early Tesla cards.
>> It won't boot. Nor can I get it to boot with either of the other two
>> kernels, and I'll be the one that worked was erased.
>> *Once* it complained that it couldn't fsck the large filesystem (IIRC,
>> it's XFS). The other four-five times, I get pNFS something Dependency,
>> failed, systemd freezing execution.
>> So far, I'm googling, and not finding anything like this. Has anyone run
>> into this, or have any suggestions?
>> If I could get back to the fsck failure, I could at least tell it to
>> ignore /dev/sdb....
> This is more complex... I have two drives in this system. I've got one
> that holds the CentOS 7 install, and one with 6.6. The one with the 7 is
> in hot swap bay 1, while the other's in bay 2. With both of them in there,
> it goes to boot off what I would expect to be enumerated as hd1; instead,
> it seems to see it as hd0.
> When I pull out the drive with 6, 7 boots just fine. The drive with 6, of
> course, has grub, while the one with 7 has grub2.
> Any ideas as to how I can get it to work with the correct drive?

Of course this is stupid, but I would just tell grub2 write bootsector on
the other drive. You may need to boot off DVD and chroot into CentOS7 for
that. But think it over first as _my_ brain has melted and doesn't work


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