805cc9bfee
Ubiblk v0.1‑7 upgrades its dependencies to the most recent versions, which consequently fixes a startup race condition. The observable symptom of the race condition was that CH sometimes failed to boot with Ubiblk disks. The sequence was: 1. CH sent `VHOST_USER_SET_VRING_ENABLE` to enable the vring, but didn’t require an acknowledgement that it had been processed by Ubiblk. 2. The first IO request was placed into the vring, and the kick EventFd was signalled to notify Ubiblk that there was IO to process. The `vhost` crate used by Ubiblk ignores notifications before the vring is enabled, so sometimes step 2 occurred before the enable message was processed, causing Ubiblk to miss the IO request. In vhost 0.14.0, the crate was updated to set the `REPLY_ACK` protocol feature. When Ubiblk advertises this feature to CH, CH will wait for the acknowledgement in step 1 before proceeding, eliminating the race condition.
48 lines
1.1 KiB
Ruby
48 lines
1.1 KiB
Ruby
# frozen_string_literal: true
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require "fileutils"
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require_relative "../../common/lib/arch"
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class VhostBlockBackend
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def initialize(version)
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@version = version
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end
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def sha256
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if @version == "v0.1-7" && Arch.x64?
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"114119bc78609db3795bcd426a386eb97a623ba78e9177de6b375b9616927ca6"
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elsif @version == "v0.1-7" && Arch.arm64?
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"aa92b91130de6e086332c4ad8dcb76e233624055532d5494db0a987883adee0f"
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else
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fail "Unsupported version: #{@version}, #{Arch.sym}"
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end
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end
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def url
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"https://github.com/ubicloud/ubiblk/releases/download/#{@version}/vhost-backend-#{Arch.sym}.tar.gz"
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end
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def dir
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"/opt/vhost-block-backend/#{@version}"
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end
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def bin_path
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"#{dir}/vhost-backend"
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end
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def init_metadata_path
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"#{dir}/init-metadata"
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end
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def download
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temp_tarball = "/tmp/vhost-backend-#{@version}.tar.gz"
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puts "Downloading ubiblk package from #{url}"
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r "curl -L3 --connect-timeout 5 --max-time 30 -o #{temp_tarball} #{url}"
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FileUtils.mkdir_p(dir)
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FileUtils.cd dir do
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r "tar -xzf #{temp_tarball}"
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end
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FileUtils.rm_f temp_tarball
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end
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end
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