IQ 4:- how to mount zfs FS?By default after created zfs its get mountedmanually ,zfs mount -O tank/home/lalt

example:

# zfs mount -a

By default, ZFS does not allow mounting on top of a nonempty directory. To force a mount on top of a nonempty directory, you must use the -Ooption. For example:

# zfs mount tank/home/lalt cannot mount '/export/home/lalt': directory is not empty use legacy mountpoint to allow this behavior, or use the -O flag # zfs mount -O tank/home/lalt

Legacy mount points must be managed through legacy tools. An attempt to use ZFS tools results in an error. For example:

# zfs mount pool/home/billm cannot mount 'pool/home/billm': legacy mountpoint use mount(1M) to mount this filesystem # mount -F zfs tank/home/billm

Mounting ZFS File Systems

ZFS automatically mounts file systems when file systems are created or when the system boots. Use of the zfs mount command is necessary only when you need to change mount options, or explicitly mount or unmount file systems.

The zfs mount command with no arguments shows all currently mounted file systems that are managed by ZFS. Legacy managed mount points are not displayed. For example:

# zfs mount tank /tank tank/home /tank/home tank/home/bonwick /tank/home/bonwick tank/ws /tank/ws

You can use the -a option to mount all ZFS managed file systems. Legacy managed file systems are not mounted. For example:

# zfs mount -a

By default, ZFS does not allow mounting on top of a nonempty directory. To force a mount on top of a nonempty directory, you must use the -Ooption. For example:

# zfs mount tank/home/lalt cannot mount '/export/home/lalt': directory is not empty use legacy mountpoint to allow this behavior, or use the -O flag # zfs mount -O tank/home/lalt

Legacy mount points must be managed through legacy tools. An attempt to use ZFS tools results in an error. For example:

# zfs mount pool/home/billm cannot mount 'pool/home/billm': legacy mountpoint use mount(1M) to mount this filesystem # mount -F zfs tank/home/billm

When a file system is mounted, it uses a set of mount options based on the property values associated with the dataset. The correlation between properties and mount options is as follows:

Table 6–4 ZFS Mount-Related Properties and Mount Options

Property	Mount Option
atime	atime/noatime
devices	devices/nodevices
exec	exec/noexec
nbmand	nbmand/nonbmand
readonly	ro/rw
setuid	setuid/nosetuid
xattr	xattr/noaxttr