On Sun, 22 Jan 2017 20:10:14 -0500, Aaron Knister said: > This is going to sound like a ridiculous request, but, is there a way to > cause a filesystem to panic everywhere in one "swell foop"? (...) > I can seem to do it on a per-node basis with "mmfsadm test panic <fs> > <error code>" but if I do that over all 1k nodes in my test cluster at > once it results in about 45 minutes of almost total deadlock while each > panic is processed by the fs manager.
Sounds like you've already found the upper bound for panicking all at once. :) What exactly are you trying to do here? Force-dismount all over the cluster due to some urgent external condition (UPS fail, whatever)? And how much do you care about file system metadata consistency and/or pending data writes? (Be prepared to Think Outside The Box - the *fastest* way may be to use a controllable power strip in the rack and cut power to your fiber channel switches, isolating the storage *real* fast....)
pgpJfMNoPVt4A.pgp
Description: PGP signature
_______________________________________________ gpfsug-discuss mailing list gpfsug-discuss at spectrumscale.org http://gpfsug.org/mailman/listinfo/gpfsug-discuss
