[Bug 817485] Re: btrfs raid1 is slow at boot

[turbooster]

** Attachment added: "bootchart with ureadahead and fsck disabled"
   https://bugs.launchpad.net/bugs/817485/+attachment/2238198/+files/bootchart-ureadahead-and-fsck-disabled.png

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to btrfs-tools in Ubuntu.
https://bugs.launchpad.net/bugs/817485

Title:
  btrfs raid1 is slow at boot

Status in “btrfs-tools” package in Ubuntu:
  New

Bug description:
  When running natty from a raid1 on a notebook (a small mlc ssd and one
  partition of a normal hdd) the normal boots takes over 1 minute. fsck
  and ureadahead take most of the time. When both are disabled (setting
  0 EOL in fstab and removing ureadahead) the time for boot is 18
  seconds. It looks like ureadahead is reading from one disk only -
  maybe this is an additional bug.

  ProblemType: Bug
  DistroRelease: Ubuntu 11.04
  Package: btrfs-tools 0.19+20100601-3ubuntu2
  ProcVersionSignature: Ubuntu 2.6.38-10.46-generic 2.6.38.7
  Uname: Linux 2.6.38-10-generic x86_64
  Architecture: amd64
  Date: Thu Jul 28 09:39:55 2011
  InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
  ProcEnviron:
   LANGUAGE=de:en
   LANG=de_DE.UTF-8
   SHELL=/bin/bash
  SourcePackage: btrfs-tools
  UpgradeStatus: No upgrade log present (probably fresh install)

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/btrfs-tools/+bug/817485/+subscriptions