IRIX™ Admin: Disks and Filesystems

Table of Contents

IRIX Admin Manual Set

About This Guide

What This Guide Contains

Conventions Used in This Guide

How to Use This Guide

Product Support

Additional Resources

1. Disk Concepts

Disk Drives Supported by IRIX

Physical Disk Structure

Disk Partitions

System Disks, Option Disks, and Partition Layouts

Partition Types

Volume Headers

Device Files

2. Performing Disk Administration Procedures

Listing the Disks on a System With hinv

Formatting and Initializing a Disk With fx

Adding Files to the Volume Header With dvhtool

Removing Files in the Volume Header With dvhtool

Displaying a Disk's Partitions With prtvtoc

Repartitioning a Disk With xdkm

Repartitioning a Disk With fx

Creating Device Files With MAKEDEV

Creating Device Files With mknod

Creating Mnemonic Names for Device Files With ln

Creating a System Disk From the PROM Monitor

Creating a New System Disk From IRIX

Creating a New System Disk by Cloning

Adding a New Option Disk

3. Filesystem Concepts

IRIX Directory Organization

General Filesystem Concepts

EFS Filesystems

XFS Filesystems

Network File Systems (NFS)

Cache File Systems (CacheFS)

/proc Filesystem

Filesystem Creation

Filesystem Mounting and Unmounting

Filesystem Checking

Filesystem Reorganization

Filesystem Administration From the Miniroot

How to Add Filesystem Space

Disk Quotas

Filesystem Corruption

4. Creating and Growing Filesystems

Planning for XFS Filesystems

Making an XFS Filesystem

Making an EFS Filesystem

Making a Filesystem From inst

Growing an XFS Filesystem Onto Another Disk

Growing an EFS Filesystem Onto Another Disk

Converting Filesystems on the System Disk From EFS to XFS

Converting a Filesystem on an Option Disk From EFS to XFS

5. Maintaining Filesystems

Routine Filesystem Administration Tasks

Mounting and Unmounting Filesystems

Managing Disk Space

Copying XFS Filesystems With xfs_copy

Checking EFS Filesystem Consistency With fsck

Checking XFS Filesystem Consistency With xfs_check

6. Logical Volume Concepts

Introduction to Logical Volumes

XLV Logical Volumes

lv Logical Volumes

7. Creating and Administering XLV Logical Volumes

Verifying That Plexing Is Supported

Creating Volume Objects With xlv_make

Displaying Logical Volume Objects

Adding a Volume Element to a Plex (Growing a Logical Volume)

Adding a Plex to a Logical Volume

Detaching a Plex From a Logical Volume

Deleting an XLV Object

Removing and Mounting a Plex

Creating Plexed Logical Volumes for Root

Booting the System Off an Alternate Plex

Configuring the System for More Than Ten XLV Logical Volumes

Converting lv Logical Volumes to XLV Logical Volumes

Creating a Record of XLV Logical Volume Configurations

8. Creating and Administering lv Logical Volumes

Creating Entries in the /etc/lvtab File

Creating New Logical Volume With mklv

Checking Logical Volumes With lvck

Creating a Logical Volume and a Filesystem on Newly Added Disks

Increasing the Size of a Logical Volume

Shrinking a Logical Volume

9. System Administration for Guaranteed-Rate I/O

Guaranteed-Rate I/O Overview

GRIO Guarantee Types

GRIO System Components

Hardware Configuration Requirements for GRIO

Configuring a System for GRIO

Additional Procedures for GRIO

GRIO File Formats

A. Repairing EFS Filesystem ProblemsWith fsck

Initialization Phase

General Errors

Phase 1 Check Blocks and Sizes

Phase 2 Check Pathnames

Phase 3 Check Connectivity

Phase 4 Check Reference Counts

Phase 5 Check Free List

Phase 6 Salvage Free List

Cleanup Phase

Index