If you are still experiencing this issue, please set this bug status back to "confirmed".
** Also affects: dpkg (Debian) via http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=588254 Importance: Unknown Status: Unknown ** Package changed: linux (Ubuntu) => dpkg (Ubuntu) ** Changed in: dpkg (Ubuntu) Status: Confirmed => Triaged ** Changed in: dpkg (Ubuntu) Importance: Low => Medium ** Changed in: dpkg (Ubuntu) Status: Triaged => Fix Released -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/601299 Title: btrfs fsync() is extremely slow Status in dpkg package in Ubuntu: Fix Released Status in dpkg package in Debian: Unknown Bug description: Installation and upgrades on btrfs are *extremely* slow. This is because dpkg makes extensive fsync() calls to make sure that a power loss in the middle of an operation does not leave the system in a broken state. These calls have a significant performance penalty on other filesystems ( such as ext[234] ), but on btrfs, the penalty is multiple orders of magnitude. As a workaround, you can use the eatmydata package/command around dpkg /apt-get to disable the fsync() calls and restore good performance during upgrades, at the risk of hosing the system if it crashes. The apt-btrfs-snapshot package will have apt make a snapshot before it begins an upgrade so that if things do go wrong, you can at least roll back to the snapshot. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/dpkg/+bug/601299/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
