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Date:      Tue, 18 Dec 2018 14:54:08 +0100
From:      Mateusz Kwiatkowski <kwiat@panic.pl>
To:        freebsd-virtualization@freebsd.org
Subject:   Re: Bumping VM_MAX_NAMELEN
Message-ID:  <993F7B5C-FC58-4C97-889F-BA9F2CA6FB4D@panic.pl>
In-Reply-To: <AEB45FD1-4B06-4440-927F-5B77AF0641D4@panic.pl>
References:  <AEB45FD1-4B06-4440-927F-5B77AF0641D4@panic.pl>

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> On 18 Dec 2018, at 10:32, Mateusz Kwiatkowski <kwiat@panic.pl> wrote:
> 
> Hello,
> 
> Currently VM_MAX_NAMELEN is set to 32 and thus the maximum length of virtual machine is 31 characters.
> We’re building product that uses bhyve to run virtual machines and we wanted to use UUIDs as names.
> UUID with hyphens has 36 characters and without it has 32 characters. Can this limit be increased to 33 and 
> ideally to 37 or more characters?
> For comparison qemu-kvm+libvirt allow for virtual machines with names that are over 240 chars.
> 

I’ve just tested bhyve with VM_MAX_NAMELEN set to 64 on FreeBSD 12.0-STABLE and everything works as expected.
I’ve created bug report for this: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=234134

—
Regards,
Mateusz Kwiatkowski



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