Re: VMS analogue of FBSD and linux hier(7) man pages

In article <+T3s37JdA2dP@xxxxxxxxxxxxxxxxxxxxxxxx>,
cornelius@xxxxxxxxxxxxxxxxx (George Cornelius) wrote:

In article <paul.sture.nospam-02A3BD.08051614062007@xxxxxxxxxxxx>, "P. Sture"
<paul.sture.nospam@xxxxxxxxxx> writes:
In article <4670BCDF.3020600@xxxxxxxxxxx>,
"Richard B. Gilbert" <rgilbert88@xxxxxxxxxxx> wrote:
How long would it take to boot thirteen nodes from the same system disk?

Don't recall, but then my cluster has been up for awhile:

View of Cluster from system ID 16604 node: ROSRVX 14-JUN-2007
09:46:59
lqqqqqqqqqqqqqqqqqqqqqqqwqqqqqqqqqklqqqqqqqqqqqqqqqqqqqk
x SYSTEMS x MEMBERS xx CLUSTER x
tqqqqqqqqwqqqqqqqqqqqqqqnqqqqqqqqqutqqqqqqqqqqqqqqqqqqqu
x NODE x SOFTWARE x STATUS xx FORMED x
tqqqqqqqqnqqqqqqqqqqqqqqnqqqqqqqqqutqqqqqqqqqqqqqqqqqqqu
x ROSRVX x VMS V7.3-2 x MEMBER xx 18-JUL-1998 23:22 x
x ROSRVC x VMS V7.3-2 x MEMBER xmqqqqqqqqqqqqqqqqqqqj
x ROSRVB x VMS V7.3-2 x MEMBER x
x ROSRVZ x VMS V7.3-2 x MEMBER x
x ROSRVN x VMS V7.3-2 x MEMBER x
x ROSRVY x VMS V7.3-2 x MEMBER x
x ROSRVM x VMS V7.3-2 x MEMBER x
mqqqqqqqqvqqqqqqqqqqqqqqvqqqqqqqqqj

[here the boot disk only serves seven nodes].

The truth is it takes a long time to boot a single node, but that is
because STARTUP has to mount a _ton_ of FC based shadow sets and there
always seem to be path switches triggered by the mount operations.


I take it you did one or more rolling upgrades to achieve that cluster
uptime and get to V7.3-2.

[...]

Caveat: before implementing DOSD, a workstation rebooting would initiate
a full shadow copy.

You did have volume shadowing licenses for the workstations, and were
setting up a path the the license database in SYLOGICALS, I assume?

These workstations were MOP booted from a pair of 4100s. The 4100s had
the shadowing licenses.

Or are you talking about the fact that the writes to SYSDUMP.DMP only
go to the original (boot) member, after which a shadow merge is forced
in order to get the shadow members back into synchronization?


That was it. The operator log would contain messages saying something
like "shadow master has changed, the dumpfile WILL be written ...".

--
Paul Sture
.

Relevant Pages

  • Re: VMS analogue of FBSD and linux hier(7) man pages
    ... x ROSRVC x VMS V7.3-2 x MEMBER xmqqqqqqqqqqqqqqqqqqqj ... a full shadow copy. ...
    (comp.os.vms)
  • Re: Shadow set problem finally solved
    ... pure-vanilla problem of a shadow set having a forced ... error that VMS replicates on every shadow copy, ... Break out a member. ...
    (comp.os.vms)
  • Re: : Re: Is CDP available for VMS?
    ... VAXman- A Bored Certified VMS Kernel Mode Hacker VAXmanTMESISORG ... You can't just say "shadow disk X to disk Y", ... Rdb has all the tools ... I think you have to better specify what kind of backup ...
    (comp.os.vms)
  • Re: Shadow set problem finally solved
    ... pure-vanilla problem of a shadow set having a forced ... you have to allocate the block somehow. ... init/erase a target drive, then back up to it from your master copy]. ... Break out a member. ...
    (comp.os.vms)
  • Re: : Re: Is CDP available for VMS?
    ... of shadowing that VMS Host Base Shadowing gives you. ... You can't just say "shadow disk X to disk Y", ... link backup or shadow my database. ... for both total and incremental backup. ...
    (comp.os.vms)