On Sunday 10 January 2010 21.05:46 Johannes Hirte wrote: > I've observed this hanging task now several times. Not sure when this > started, but 2.6.32 is affected too, IIRC. I don't have a test pattern > for this. Dovecot imap triggers this from time to time. I've enabled > CONFIG_DETECT_HUNG_TASK now and got this two tasks which hang:
I've had vey similar hangs occasionally; don't remember if they were the exact same code path or not. "btrfs-vol -b" on an 2T btrfs fs (raid 1 mode over 4 disks) on an arm CPU has triggered it several times, so it seems a reliable way to reproduce this. Unfortunately log rotation has already killed the messages. Do you want me to re-run? 2.6.32 kernel, btrfs-progs from git about 4 weeks ago. cheers -- vbi -- Place stamp here.
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