On Fri, May 16, 2025 at 12:06:21PM -0400, Benjamin Marzinski wrote: > I've run into SCSI arrays that always act like they were called with the > ALL_TG_PT flag set (or perhaps they were just configured that way, I > never could get a straight answer about that).
Hmm, that's pretty strange. > libmpathpersist accepts > this flag, and only sends one registration per initiator & target device > when it's set, instead of one per initator & target port. With "this flag" you mean ALL_TG_PT? > dm-multipath > currently doesn't have the knowledge necessary to figure out which > devices it needs to send reservations to, even if the kernel PR API > supported this. > > But I supposed it could just send the registration normally down one > path and if that works, it could just ignore the existing key when it > sends the registration down all the other paths. We could add support for a similar flag to the kernel PR API. The problem is to figure out how to discover support for it. What does the library do for that currently?
