Date: Wed, 8 Nov 2017 00:47:23 +0000 From: Colin Percival <cperciva@tarsnap.com> To: Rafal Lukawiecki <raf@rafal.net>, Pete Wright <pete@nomadlogic.org> Cc: freebsd-cloud@freebsd.org Subject: Re: AWS c5.class unsupported? Message-ID: <0100015f991887de-8d9baeb9-0182-435d-876c-3c3863b05ac5-000000@email.amazonses.com> In-Reply-To: <53A5CAA0-B37C-4BAE-A42A-338C04D9612E@rafal.net> References: <22772d45-812b-4592-87b7-7e9bafcc86f7@email.android.com> <53A5CAA0-B37C-4BAE-A42A-338C04D9612E@rafal.net>
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On 11/07/17 16:38, Rafal Lukawiecki wrote: > Ah, that explains the reason I have been seeing failed instance launches. Metadata (user-data) scripts have been occasionally *not* running when the cloudconfig run. Actually no -- the problem I'm aware of has nothing to do with user-data scripts and should not affect instance launching. I wouldn't be surprised if some instance launches are failing due to capacity issues though -- EC2 often has such problems when they launch a new instance family. The problem I'm tracking with C5 relates to disk hotplug: If you add an EBS volume, FreeBSD will not notice it until you run 'devctl rescan pci0', and if you remove an EBS volume FreeBSD will panic. Warner is working on fixing the "hotunplug" path in the nvme driver in order to correct the panic; we were hoping to have it fixed in HEAD before C5 was launched, but I thought we had a few weeks left. If you have a good test case for user-data script problems, please let me know (off-list). Given how much new hardware and software there is in the C5 instances I wouldn't be surprised if there are a few bugs lurking, and I'm sure my contacts at EC2 will be happy to receive reports. (FWIW, C5 not being available in the Marketplace images is probably just a case of the Marketplace taking a while to get up to speed; I marked those images as "make these available on all new instances". But I'll probably go in and disable C5 for now due to the disk attach/detach issues.) -- Colin Percival Security Officer Emeritus, FreeBSD | The power to serve Founder, Tarsnap | www.tarsnap.com | Online backups for the truly paranoid
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