From mboxrd@z Thu Jan 1 00:00:00 1970 From: Konstantinos Skarlatos Subject: Btrfs: blocked for more than 120 seconds, made worse by 3.2 rc7 Date: Wed, 28 Dec 2011 21:26:07 +0200 Message-ID: <4EFB6D4F.6070002@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Cc: Linux Btrfs , Chris Mason To: linux-kernel@vger.kernel.org Return-path: List-ID: Hello all: I have two machines with btrfs, that give me the "blocked for more than 120 seconds" message. After that I cannot write anything to disk, i am unable to unmount the btrfs filesystem and i can only reboot with sysrq-trigger. It always happens when i write many files with rsync over network. When i used 3.2rc6 it happened randomly on both machines after 50-500gb of writes. with rc7 it happens after much less writes, probably 10gb or so, but only on machine 1 for the time being. machine 2 has not crashed yet after 200gb of writes and I am still testing that. machine 1: btrfs on a 6tb sparse file, mounted as loop, on a xfs filesystem that lies on a 10TB md raid5. mount options compress=zlib,compress-force machine 2: btrfs over md raid 5 (4x2TB)=5.5TB filesystem. mount options compress=zlib,compress-force pastebins: machine1: 3.2rc7 http://pastebin.com/u583G7jK 3.2rc6 http://pastebin.com/L12TDaXa machine2: 3.2rc6 http://pastebin.com/khD0wGXx 3.2rc7 (not crashed yet)