Hello, this could help: [Chris Murphy]: You can also do a one time clean mount with '-o clear_cache,space_cache=v2' which will remove the v1 (default) space cache, and create a v2 cache. Subsequent mount will see the flag for this feature and always use the v2 cache. It's a totally differently implementation and shouldn't have this problem.
Source: https://lore.kernel.org/linux-btrfs/CAJCQCtS50+n_uygWGGHQDdOTScFMORc=2g5bwj4_ufkjhh3...@mail.gmail.com/ Regards, Hendrik -- 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/1557873 Title: task btrfs-transacti:1089 blocked for more than 120 seconds Status in linux package in Ubuntu: Confirmed Bug description: No further information, it popped up to report a an issue, and it was systemd I submitted. ProblemType: Bug DistroRelease: Ubuntu 15.10 Package: systemd 225-1ubuntu9 [modified: usr/share/dbus-1/system-services/org.freedesktop.systemd1.service] Uname: Linux 4.5.0-040500rc7-generic x86_64 ApportVersion: 2.19.1-0ubuntu5 Architecture: amd64 CurrentDesktop: XFCE Date: Tue Mar 15 22:14:45 2016 InstallationDate: Installed on 2015-05-10 (311 days ago) InstallationMedia: Ubuntu-Server 15.04 "Vivid Vervet" - Release amd64 (20150422) MachineType: Gigabyte Technology Co., Ltd. To be filled by O.E.M. ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.5.0-040500rc7-generic root=UUID=51a981ad-aeb0-4bd7-91c6-2d493155c812 ro rootflags=subvol=@ crashkernel=384M-2G:64M,2G-:128M crashkernel=384M-:128M SourcePackage: systemd UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev' UpgradeStatus: Upgraded to wily on 2015-10-26 (142 days ago) dmi.bios.date: 01/06/2014 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: F18i dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: Z77X-D3H dmi.board.vendor: Gigabyte Technology Co., Ltd. dmi.board.version: x.x dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: Gigabyte Technology Co., Ltd. dmi.chassis.version: To Be Filled By O.E.M. dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrF18i:bd01/06/2014:svnGigabyteTechnologyCo.,Ltd.:pnTobefilledbyO.E.M.:pvrTobefilledbyO.E.M.:rvnGigabyteTechnologyCo.,Ltd.:rnZ77X-D3H:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvrToBeFilledByO.E.M.: dmi.product.name: To be filled by O.E.M. dmi.product.version: To be filled by O.E.M. dmi.sys.vendor: Gigabyte Technology Co., Ltd. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1557873/+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