Hi, we are running a v240 with a zfs pool mirror onto two 3310 (SCSI). During redundancy test, when offlining one 3310.. all zfs data are unsable. - zpool hang without displaying any info - trying to read filesystem hang the command (df,ls,...) - /var/log/messages keep sending error for the fautly disk scsi: [ID 107833 kern.warning] WARNING: /pci at 1d,700000/scsi at 1,1/sd at 5,0 (sd41): offline scsi: [ID 107833 kern.warning] WARNING: /pci at 1d,700000/scsi at 1/sd at 3,0 (sd5): disk not responding to selection and other using sotruss with zpool command lead to : libzfs.so.2:*zpool_iter(0x92b88, 0x1ae38, 0x87fa0) and using mdb and zpool command are in the same state> ::pgrep zpool | ::walk thread | ::findstackstack pointer for thread 30003adb900: 2a105092d51 [ 000002a105092d51 turnstile_block+0x604() ] 000002a105092e01 mutex_vector_enter+0x478() 000002a105092ec1 spa_all_configs+0x64() 000002a105092f81 zfs_ioc_pool_configs+4() 000002a105093031 zfsdev_ioctl+0x15c() 000002a1050930e1 fop_ioctl+0x20() 000002a105093191 ioctl+0x184() 000002a1050932e1 syscall_trap32+0xcc() stack pointer for thread 3000213a9e0: 2a1050b2ca1 [ 000002a1050b2ca1 cv_wait+0x38() ] 000002a1050b2d51 spa_config_enter+0x38() 000002a1050b2e01 spa_open_common+0x1e0() 000002a1050b2eb1 spa_get_stats+0x1c() 000002a1050b2f71 zfs_ioc_pool_stats+0x10() 000002a1050b3031 zfsdev_ioctl+0x15c() 000002a1050b30e1 fop_ioctl+0x20() 000002a1050b3191 ioctl+0x184() 000002a1050b32e1 syscall_trap32+0xcc() stack pointer for thread 30003adafa0: 2a100c7aca1 [ 000002a100c7aca1 cv_wait+0x38() ] 000002a100c7ad51 spa_config_enter+0x38() 000002a100c7ae01 spa_open_common+0x1e0() 000002a100c7aeb1 spa_get_stats+0x1c() 000002a100c7af71 zfs_ioc_pool_stats+0x10() 000002a100c7b031 zfsdev_ioctl+0x15c() 000002a100c7b0e1 fop_ioctl+0x20() 000002a100c7b191 ioctl+0x184() 000002a100c7b2e1 syscall_trap32+0xcc() stack pointer for thread 3000213a080: 2a1051e8ca1 [ 000002a1051e8ca1 cv_wait+0x38() ] 000002a1051e8d51 spa_config_enter+0x38() 000002a1051e8e01 spa_open_common+0x1e0() 000002a1051e8eb1 spa_get_stats+0x1c() 000002a1051e8f71 zfs_ioc_pool_stats+0x10() 000002a1051e9031 zfsdev_ioctl+0x15c() 000002a1051e90e1 fop_ioctl+0x20() 000002a1051e9191 ioctl+0x184() 000002a1051e92e1 syscall_trap32+0xcc() stack pointer for thread 30001725960: 2a100d98c91 [ 000002a100d98c91 cv_wait+0x38() ] 000002a100d98d41 spa_config_enter+0x88() 000002a100d98df1 spa_vdev_enter+0x20() 000002a100d98ea1 spa_vdev_setpath+0x10() 000002a100d98f71 zfs_ioc_vdev_setpath+0x3c() 000002a100d99031 zfsdev_ioctl+0x15c() 000002a100d990e1 fop_ioctl+0x20() 000002a100d99191 ioctl+0x184() 000002a100d992e1 syscall_trap32+0xcc() Any one got info about problem like this with zfs ? This message posted from opensolaris.org