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    SubjectRe: Btrfs: blocked for more than 120 seconds, made worse by 3.2 rc7
    Well now machine2 has just crashed too...
    http://pastebin.com/gvfUm0az

    On Τετάρτη, 28 Δεκέμβριος 2011 9:26:07 μμ, Konstantinos Skarlatos wrote:
    > 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)
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