Yeah, sorry that was unclear. There are two workflows that can cause a batch of VM reloads: block allocations, and the interface under Manage -> Computers -> Computer Utilities. I get the sense that whenever VCL deploys VM's, it has some kind of logic to keep from firing them up all at once, but I don't know what that logic looks like or if it's the same logic in all situations (e.g. block allocations, reloads through the admin UI, or several users coincidentally reserving VM's at the same time).
We're having boot storm issues, and we're trying to address them in a number of ways (improving our storage performance, adjusting our VM images to be less thrashy on boot, looking into deploying 2.3, etc.) but as a short-term improvement of the problem I'd like to try spreading out VM start intervals, and I thought it would save me some detective work if I asked here how that's controlled in the stock code. Does that make more sense? Thanks, -m On Thu, Nov 15, 2012 at 01:14:37PM -0500, Josh Thompson wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Michael, > > Can you clarify what you are asking? I would consider the VM startup to be > part of the image reload. > > Thanks, > Josh > > On Wednesday, November 14, 2012 4:12:17 PM Michael Jinks wrote: > > Hi List. > > > > I'd like to introduce (or increase, if it's already there) a delay > > between VM startups during block allocations and image reloads. Can > > someone point me to the right spot in the code to look for that logic? > > > > We're still on 2.2.1. > > > > Thanks, > > --Michael > - -- > - ------------------------------- > Josh Thompson > VCL Developer > North Carolina State University > > my GPG/PGP key can be found at pgp.mit.edu > > All electronic mail messages in connection with State business which > are sent to or received by this account are subject to the NC Public > Records Law and may be disclosed to third parties. > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v2.0.19 (GNU/Linux) > > iEYEARECAAYFAlClMQ0ACgkQV/LQcNdtPQNpjwCfZitm2gh3foFuHtBkFTtZSwUy > iekAn3J/WdqJvLYbhGsbkJdHVm4LXOev > =I8Qt > -----END PGP SIGNATURE----- > -- Michael Jinks :: [email protected] :: 773-469-9688 University of Chicago IT Services
