I am finding that accessing my ZEVO volume causes my system to become unresponsive (I'm using ZEVO CE 1.1.1). I have a striped three disk pool in a TowerRaid USB enclosure. I had no issues with it connected to my home computer where I seeded a backup to it, but connected to my work computer where I intended to house it for remote backups (Mac Pro, Mid 2010 16GB ram) accessing the pool via the terminal will frequently cause the terminal session to freeze, and accessing via the finder causes the spinning beachball. I can close the terminal window and launch a new one, but I'm unable to force quit the finder and can only recover via a hard-reset. After rebooting I can usually access the pool a couple of times before the issue resurfaces. I'd be suspicious of the enclosure except that I had no problems on my home machine using the same enclosure.
Here are some console messages from one of the events:
10/3/12 9:44:34.000 AM kernel[0]: IOUSBMassStorageClass[0xffffff804676c000]: The device is still unresponsive after 6 consecutive USB Device Resets; it will be terminated.
10/3/12 9:44:34.000 AM kernel[0]: zfs_vdm_completion: media 0xffffff8046d1fc00, device/channel is not attached (6), 0 bytes (of 512)
10/3/12 9:44:34.000 AM kernel[0]: zfs_vdm_completion: media 0xffffff8046cc1000, device/channel is not attached (6), 0 bytes (of 512)
10/3/12 9:44:34.000 AM kernel[0]: [0xffffff804676c000](6)/(5) Device not responding
10/3/12 9:44:34.000 AM kernel[0]: zfs_vdm_completion: media 0xffffff8046d1fc00, device/channel is not attached (6), 0 bytes (of 8192)
10/3/12 9:44:34.000 AM kernel[0]: zfs_vdm_completion: media 0xffffff8046cc1000, device/channel is not attached (6), 0 bytes (of 8192)
10/3/12 9:44:34.000 AM kernel[0]: zfs_vdm_completion: media 0xffffff8046d1fc00, device/channel is not attached (6), 0 bytes (of 8192)
10/3/12 9:44:34.000 AM kernel[0]: zfs_vdm_completion: media 0xffffff8046cc1000, device/channel is not attached (6), 0 bytes (of 8192)
10/3/12 9:44:34.000 AM kernel[0]: zfs_vdm_completion: media 0xffffff8046d1fc00, device/channel is not attached (6), 0 bytes (of 8192)
10/3/12 9:44:34.000 AM kernel[0]: zfs_vdm_completion: media 0xffffff8046cc1000, device/channel is not attached (6), 0 bytes (of 8192)
10/3/12 9:44:34.000 AM kernel[0]: ________________________________________
10/3/12 9:44:34.000 AM kernel[0]: ZFS WARNING: 'error from: fs.zfs.probe_failure'
10/3/12 9:44:34.000 AM kernel[0]: pool: 'Backup-Stripe'
10/3/12 9:44:34.000 AM kernel[0]: vdev_type: 'disk'
10/3/12 9:44:34.000 AM kernel[0]: vdev_path: '/dev/dsk/GPTE_F8D440E9-A239-4AC2-9295-BB291EBB3AAE'
10/3/12 9:44:34.000 AM kernel[0]: parent_type: 'root'
10/3/12 9:44:34.000 AM kernel[0]: prev_state: 0
10/3/12 9:44:34.000 AM kernel[0]: zfs_vdm_completion: media 0xffffff8046cc1000, media is not present (6), 0 bytes (of 512)
10/3/12 9:44:34.000 AM kernel[0]: ________________________________________
10/3/12 9:44:34.000 AM kernel[0]: ZFS WARNING: 'error from: fs.zfs.data'
10/3/12 9:44:34.000 AM kernel[0]: pool: 'Backup-Stripe'
10/3/12 9:44:34.000 AM kernel[0]: zio_err: 6
10/3/12 9:44:34.000 AM kernel[0]: zio_objset: 21
10/3/12 9:44:34.000 AM kernel[0]: zio_object: 9
10/3/12 9:44:34.000 AM kernel[0]: zio_level: 0
10/3/12 9:44:34.000 AM kernel[0]: zio_blkid: 0
10/3/12 9:44:34.000 AM kernel[0]: ________________________________________
10/3/12 9:44:34.000 AM kernel[0]: ZFS WARNING: 'error from: fs.zfs.io_failure'
10/3/12 9:44:34.000 AM kernel[0]: pool: 'Backup-Stripe'
10/3/12 9:44:34.000 AM kernel[0]: ZFSLabelScheme:willTerminate: this 0xffffff8047855300 provider 0xffffff8046cc1000 'zfs vdev for 'Backup-Stripe''
10/3/12 9:44:34.000 AM kernel[0]: ZFSLabelScheme:willTerminate: this 0xffffff8047855300 provider 0xffffff8046d1e100 'zfs vdev for 'Backup-Stripe''
10/3/12 9:44:34.000 AM kernel[0]: ZFSLabelScheme:willTerminate: this 0xffffff8047855300 provider 0xffffff8046d1fc00 'zfs vdev for 'Backup-Stripe''
10/3/12 9:44:34.000 AM kernel[0]: zfsx_terminate_pool: found top-level fs for 'Backup-Stripe'
10/3/12 9:44:34.000 AM kernel[0]: ________________________________________
10/3/12 9:44:34.000 AM kernel[0]: ZFS WARNING: 'error from: fs.zfs.probe_failure'
10/3/12 9:44:34.000 AM kernel[0]: pool: 'Backup-Stripe'
10/3/12 9:44:34.000 AM kernel[0]: vdev_type: 'disk'
10/3/12 9:44:34.000 AM kernel[0]: vdev_path: '/dev/dsk/GPTE_0F4E9278-CBCC-45F1-BF36-A14A386DD866'
10/3/12 9:44:34.000 AM kernel[0]: parent_type: 'root'
10/3/12 9:44:34.000 AM kernel[0]: prev_state: 0
10/3/12 9:44:34.000 AM kernel[0]: zfsx_vdm_strategy: 'disk6s2' no longer open!
10/3/12 9:44:34.000 AM kernel[0]: zfsx_vdm_strategy: 'disk6s2' no longer open!
10/3/12 9:44:34.000 AM kernel[0]: ZFSLabelScheme:stop: 0xffffff8047855300 goodbye 'zfs vdev for 'Backup-Stripe''
10/3/12 9:44:34.000 AM kernel[0]: zfsx_vdm_strategy: 'disk6s2' no longer open!
10/3/12 9:44:34.000 AM kernel[0]: zfsx_vdm_strategy: 'disk6s2' no longer open!
10/3/12 9:44:34.000 AM kernel[0]: ________________________________________
10/3/12 9:44:34.000 AM kernel[0]: ZFS WARNING: 'error from: fs.zfs.probe_failure'
10/3/12 9:44:34.000 AM kernel[0]: pool: 'Backup-Stripe'
10/3/12 9:44:34.000 AM kernel[0]: vdev_type: 'disk'
10/3/12 9:44:34.000 AM kernel[0]: vdev_path: '/dev/dsk/GPTE_E44D27ED-7744-4728-A6F3-6702515242C1'
10/3/12 9:44:34.000 AM kernel[0]: parent_type: 'root'
10/3/12 9:44:34.000 AM kernel[0]: prev_state: 0
10/3/12 9:44:34.000 AM kernel[0]: ________________________________________
10/3/12 9:44:34.000 AM kernel[0]: ZFS WARNING: 'error from: fs.zfs.data'
10/3/12 9:44:34.000 AM kernel[0]: pool: 'Backup-Stripe'
10/3/12 9:44:34.000 AM kernel[0]: zio_err: 6
10/3/12 9:44:34.000 AM kernel[0]: zio_objset: 21
10/3/12 9:44:34.000 AM kernel[0]: zio_object: 99112
10/3/12 9:44:34.000 AM kernel[0]: zio_level: 0
10/3/12 9:44:34.000 AM kernel[0]: zio_blkid: 0
10/3/12 9:44:34.000 AM kernel[0]: ________________________________________
10/3/12 9:44:34.000 AM kernel[0]: ZFS WARNING: 'error from: fs.zfs.io_failure'
10/3/12 9:44:34.000 AM kernel[0]: pool: 'Backup-Stripe'
10/3/12 9:44:38.000 AM kernel[0]: ________________________________________
10/3/12 9:44:38.000 AM kernel[0]: ZFS WARNING: 'error from: fs.zfs.data'
10/3/12 9:44:38.000 AM kernel[0]: pool: 'Backup-Stripe'
10/3/12 9:44:38.000 AM kernel[0]: zio_err: 6
10/3/12 9:44:38.000 AM kernel[0]: zio_objset: 0
10/3/12 9:44:38.000 AM kernel[0]: zio_object: 1
10/3/12 9:44:38.000 AM kernel[0]: zio_level: 0
10/3/12 9:44:38.000 AM kernel[0]: zio_blkid: 0
10/3/12 9:44:38.000 AM kernel[0]: ________________________________________
10/3/12 9:44:38.000 AM kernel[0]: ZFS WARNING: 'error from: fs.zfs.io_failure'