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I wonder how long did it take to bisect such issue. Build image every time and reboot a vm?
by polskibus 1y ago
I wonder how long did it take to bisect such issue. Build image every time and reboot a vm?
- cperciva 1y agoI can't remember exactly but it was a few hours. I already knew which week the issue arose (from comparing weekly snapshots) so that gave me a head start. But yes, I built a lot of AMIs. And launched new EC2 instances for each of them -- it wasn't just a matter of rebooting since the first time an AMI launches there's different behaviour (both from FreeBSD, e.g. growing the root disk, and from EC2, e.g. disk caching).
- polskibus 1y agoThanks for the additional information, a few hours sounds great, I was expecting multiple days to narrow it down, given a lengthy feedback loop.