MOUNT

Purpose

Options

TYPE (file_system_type)

Specifies the file system type. Specify ZFS or HFS and the correct file system type is determined for the file system that is located by the data set name. If the TYPE specified (HFS) does not match the real file system type (ZFS), any associated ZFS parameters are ignored. For more information, see Mounting considerations in z/OS UNIX System Services Planning.

PARM(parameter_string)

Specifies a parameter string to be passed to zFS. Parameters are case-sensitive and separated by a comma. Enclose the parameter string within quotation marks. If a parameter is specified multiple times, the last parameter is used.

Note: If the value specified on the TYPE parameter (HFS) does not match the real file system type (ZFS), any associated ZFS parameters are ignored.

AGGRFULL(threshold,increment)

Specifies the threshold and increment for reporting aggregate full error messages to the operator. The default is the aggrfull specification in the IOEFSPRM file.

Note: AGGRFULL and FSFULL provide the same function. You can use either one (or both) to monitor the free space for an aggregate. However, AGGRFULL tends to give a more accurate view of free space and is the suggested choice.

AGGRGROW | NOAGGRGROW

Specifies whether the aggregate is eligible to be dynamically grown. The growth is based on the secondary allocation of the aggregate and will occur when the aggregate becomes full. The default is the aggrgrow specification in the IOEFSPRM file.

CONVERTTOV5 | NOCONVERTTOV5

Specifies whether a zFS read/write file system is assigned the converttov5 attribute. If it is assigned the converttov5 attribute and the aggregate is a version 1.5 aggregate, zFS automatically converts directories from v4 to extended (v5) as they are accessed. If the converttov5 attribute is assigned at primary mount time, a version 1.4 aggregate is changed to a version 1.5 aggregate.

If automatic directory conversion for a directory fails, the conversion is not attempted again until the file system is unmounted and mounted again.

The converttov5 attribute can also be assigned if the MOUNT option is not specified but the converttov5 specification in the IOEFSPRM file is on when the file system is mounted or remounted.

The default is NOCONVERTTOV5. However, the converttov5 attribute can also be assigned if the converttov5 specification in the IOEFSPRM file is on when the file system is mounted or remounted.

FSFULL(threshold,increment)

Specifies the threshold and increment for reporting file system free space error messages to the operator. The default is the fsfull specification in the IOEFSPRM file.

Note: AGGRFULL and FSFULL provide the same function. You can use either one (or both) to monitor the free space for an aggregate. However, AGGRFULL tends to give a more accurate view of free space and is the suggested choice.

RWSHARE | NORWSHARE

Specifies whether a zFS read/write mounted file system will be mounted sysplex-aware or non-sysplex aware. zFS must be running sysplex-aware on a file system basis (IOEFSPRM specifies sysplex=filesys) for this parameter to take effect. The default is the sysplex_filesys_sharemode specified in the IOEFSPRM file, or later using the zfsadm config command. For information about whether to make a read/write file system sysplex aware, see Using zFS read/write sysplex-aware file systems.

Usage

A mount of a compatibility mode aggregate is serialized with other zfsadm commands (because the mount of a compatibility mode aggregate does an implicit attach).

If you attempt to mount a compatibility mode aggregate/file system read-only and it fails because it needs to run recovery (return code EROFS (141) and reason code EFxx6271), you should temporarily mount it read/write (so it can complete the recovery process) and then mount it read-only. Alternatively, you can specify the romount_recovery=on configuration option in IOEFSPRM. This causes the file system to automatically be temporarily mounted read/write to allow log recovery to run and then to be mounted read-only.

If the DASD volume containing the zFS compatibility mode aggregate being mounted is read-only, you can receive message IOEZ00336I. This message indicates that the zFS aggregate indicator cannot be set in the catalog (actually, in the VVDS on the volume). The zFS aggregate is successfully mounted (and attached). DFSMSdss backup (DUMP) will not automatically quiesce and unquiesce the zFS aggregate because it cannot determine that the VSAM linear data set is a zFS aggregate. If the zFS aggregate can be mounted with the DASD volume in read/write, the zFS aggregate indicator will be set.

You can determine if the zFS aggregate indicator is set by using IDCAMS LISTCAT ALL against the zFS aggregate and looking for the zFS indicator in the output.

IOEZ00412I Catalog search failed for aggregate PLEX.JMS.AGGR006.PATH. Shareoptions are not altered.

IOEZ00336I PLEX.JMS.AGGR006.PATH could not be marked as a zFS aggregate in the catalog, rc=60 rsn=104

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