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Troubleshooting ZFS

Most ZFS errors I've experienced generally fall into one of three categories. missing devices, damaged devices and data corruption.

ZFS Recommendations

Because ZFS uses kernel addressable memory, we need to make sure to allow enough system resources to take advantage of its capabilities

ZFS Hardware Maintenance

Once the drive has been physically replaced, run the 'zfs replace' command against the device to allow it to be brought back online.

ZFS Data Protection

ZFS is a transactional file system. For each write request, a copy is made of the specified block protected by Copy-On-Write (COW)