Re: [oneSIS-users] [EXT] Re: Still trying CentOS 7.2 & oneSIS

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Nothing is obvious with me, unfortunately.  This is not a playground that I
normally play in.

And *I*m not sure what stateless and stateful mean. :-)

"diskless" means to me that we nfs-mount "/" from the headnode whereas
"diskful" means we use the local disk and do NOT nfs-mount "/" from the
headnode (but use it off of the local disk).

My last note has a lot of the detail you ask for, I think.

If not, let me know and I can try to fill in details.

I did boot diskless just now and the devices look like this:

  # ls -Fl /dev/sda*
  brw-rw----. 1 root disk 8, 0 Aug 18 09:25 /dev/sda
  brw-rw----. 1 root disk 8, 1 Aug 18 09:25 /dev/sda1
  brw-rw----. 1 root disk 8, 2 Aug 18 09:25 /dev/sda2
  brw-rw----. 1 root disk 8, 3 Aug 18 09:25 /dev/sda3
  brw-rw----. 1 root disk 8, 4 Aug 18 09:25 /dev/sda4
  # 

whereas when I tried to boot diskful I see this:

  / # ls -Fl /dev/sda*
  brw-rw----    1 root     root        8,   0 Aug 18 13:13 /dev/sda
  brw-rw----    1 root     root        8,   1 Aug 18 13:13 /dev/sda1
  brw-rw----    1 root     root        8,   2 Aug 18 13:13 /dev/sda2
  brw-rw----    1 root     root        8,   3 Aug 18 13:13 /dev/sda3
  brw-rw----    1 root     root        8,   4 Aug 18 13:13 /dev/sda4

  / # 

I don't know that/if the group=root VS group=disk means anything.  But
everything else looks pretty good (to my very untrained eye :-).

Thanks!

- Bill

>>> Dave Love writes:

 Dave> I'm not sure what "diskless" and "diskful" mean here, as they're often
 Dave> used differently from my usage.  Are they both stateless, or does
 Dave> "diskful" imply stateful rather than just mounting /tmp etc.?
 Dave> 
 Dave> I've never tried a stateful image, but the sort of things that can go
 Dave> wrong mounting /tmp in a stateless one (apart from not having the driver
 Dave> in the initramfs) include not having the device file (i.e. /dev/sda4)
 Dave> pre-created, and getting devices in the wrong order if there are
 Dave> multiple disks.  I'd try to compare carefully the boot sequence with a
 Dave> normal boot, if you can, e.g. from a .iso, or from the working onesis
 Dave> boot if that does have a local disk.
 Dave> 
 Dave> Apologies if this is all obvious.