Michael W Lucas Mar 7
@dch I have not, good idea! maybe virtio as well? Gonna play around some this weekend...
Show threadJason Tubnor 🇦🇺Mar 7
@mwl @dch I did as part of my testing. I use NVMe devices for everything, no matter the underlying storage (thanks @ctuffli ). FWIW ahci-hd should only used for compatibility requirements (usually to get virtio drivers onboard for Windows guests) as it dog slow.
Show threadChuck TuffliMar 7
@Tubsta @dch @mwl hopefully goes without saying, but yell at me if a virtual shelf of N NVMe disks in bhyve doesn’t work
Show threadJason Tubnor 🇦🇺Mar 7
@ctuffli @dch @mwl You might know the current state, what is the pci device limit currently in bhyve? I think it is 32 but might be wrong
Show threadChuck TuffliMar 7
@Tubsta @dch @mwl bhyve "slot" specification in the max is bus:pcislot:function where bus is 0-255, pcislot is 0-31, and function is 0-7. If the maths don't fail me, that is around 64k-ish devices
Show threadMichael DexterMar 7

@ctuffli @Tubsta @dch @mwl So, we talking bhyve or vm-bhyve?

I would not be surprised if vm-bhyve doesn’t assume that, “no one would ever want more than 8 devices”, or at least devices of one type.

Have you tried raw bhyve?

Show threadMichael W Lucas 
@dexter @ctuffli @Tubsta @dch vm-bhyve, because I'm lazy
Mar 7 at 3:57pmWeb
Show threadJason Tubnor 🇦🇺Mar 7
@mwl @dexter @ctuffli @dch No, not lazy. You just want consistency because fat fingers on a massive native command line just gives you headaches you don’t need (well that is my excuse) #repeatable #bhyve
Show threadMichael W Lucas Mar 8

@Tubsta @dch @dexter @ctuffli

bhyve seems to work well, but yeah, those command lines are 

Show threadMichael DexterMar 8

@mwl @Tubsta @dch @ctuffli I am speaking purely from a diagnostics perspective. I believe, to their credit, their log shows the command that was executed. Which is kinda important, given the many “bhyve” bugs along the lines of “it’s treating my boot drive as if it is a CD-ROM drive …” #TrueStory!

So yeah. Share the underlying actual stuff please because very few vm-bhyve bugs are bhyve bugs.

Show threadMichael DexterMar 8

@mwl @Tubsta @dch @ctuffli I mean like, I didn’t write an OpenBSD bug report when I found that typo in Absolute OpenBSD. In of course the one chapter you didn’t trust me to have in advance. Nosiree. THEN you tasked me with raising over $150K to date (USD no less, not that Looney stuff) for a conference.

But yeah sure, blame bhyve.

Until of course it comes time to write a book on the subject… ahem!

Show threadMichael W Lucas Mar 8

@dexter @Tubsta @dch @ctuffli

Sure, I ask if something's weird and file a bug.

But sometimes, I'm doing something actively daft. If bhyve-vm hangs trying to launch a host with 75 drives, my first instinct is to say "well, this would be because I'm a damn idiot trying to use 75 drives on one VM..."

Show threadMichael DexterMar 8

@mwl @Tubsta @dch @ctuffli Bruh. bhyve now supports NUMA domains, because test ALL THE THINGS. 75 drives is like… a good start. All scaling issues should be explored to their unholy extremes.

U got this!

Show threadMichael W Lucas Mar 8

@dexter @Tubsta @dch @ctuffli

okay then, I'll send you my stupid failures.

Show threadJason Tubnor 🇦🇺Mar 8
@dexter @mwl @dch @ctuffli That is how I found the issue yesterday. The logs are excellent in vm-bhyve.
Show threadMichael DexterMar 8
@Tubsta @dch @mwl @ctuffli Thar u go.