wdisable policy and mwdisable policy

If wdisable (write disable) or mwdisable (metadata-write disable) is selected, the file system is disabled or degraded, depending on the type of error encountered. Select wdisable or mwdisable for environments where read errors are more likely to persist than write errors, such as when using non-redundant storage. mwdisable is the default ioerror mount option for local mounts.

Note:

The mirrored volume file system is not disabled when wdisable or mwdisable is selected, if the problem occurs when there is only one plex.

See the mount_vxfs(1M) manual page.