[Bug 817485] [NEW] btrfs raid1 is slow at boot

[turbooster]

Public bug reported:

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)

** Affects: btrfs-tools (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug btrfs natty running-unity

-- 
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