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Date:      Sat, 06 Jun 2009 17:53:46 +0200
From:      Henri Hennebert <hlh@restart.be>
To:        freebsd-stable@freebsd.org
Subject:   Stable from May 31 - zfs list locked
Message-ID:  <4A2A910A.5060900@restart.be>

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Hello,

I encounter this problem for the second time. The system is working 
perfectly well but suddenly the command `zfs list' don't work and can't 
be killed.

Here is a procstat of the culprit:

[root@morzine ~]# procstat -k 91766
   PID    TID COMM             TDNAME           KSTACK 

91766 100490 zfs              -                mi_switch sleepq_switch 
sleepq_wait _cv_wait zio_wait dbuf_read dmu_buf_hold zap_lockdir 
zap_lookup_norm zap_lookup dsl_prop_get_dd dsl_dataset_get_ref 
dsl_dataset_hold dmu_objset_open zfs_ioc_objset_stats zfsdev_ioctl 
devfs_ioctl_f kern_ioctl

same thing happen if I try to run `zpool list' un another terminal.

Henri




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