Download Solaris DiskSuite 4.2.1

Solaris Volume Manager
M. Desouky
RAID Overview
SDS Software
SDS Installation
SDS User Interfaces
MD State Database
Concats & Stripes
Mirrors
Hot Spares
RAID-5 MD
FS Operations
Disksets
2
Table of Contents
1. RAID Overview
2. Introduction to SDS Software
3. SDS Installation
4. SDS User Interfaces
5. Metadevice State Database
6. Concatenation & Stripes
7. Mirrors & Hot Spares
8. RAID-5 Metadevices
9. File System Operations
10. Disksets
RAID
University of California
Berkeley 1987
Discussion
RAID Overview
SDS Software
SDS Installation
SDS User Interfaces
MD State Database
Concats & Stripes
Mirrors
Disk Speed Limitations
File System Is Full
Disk Fault Tolerance
24x7 Systems
Multiple Disks:
Hot Spares

RAID-5 MD

FS Operations
Disksets
4


Higher probability of disk failure
MTBF
File System Spanning: (Max: 1 TB)
Longer reboot times
RAID Overview
Managing Large No of Disks
SDS Software
SDS Installation
SDS User Interfaces
MD State Database
Concats & Stripes
Mirrors
Hot Spares
RAID-5 MD
FS Operations
Disksets
5
Decrease the number of file systems
Avoid data loss due to disk failure
Balance I/O across disks, performance
Avoid file systems check at boot
Grow file systems online
Apply dual-host failover
Managing Disks
RAID Overview
SDS Software
SDS Installation
SDS User Interfaces
Techniques:

MD State Database

Concats & Stripes

Mirrors

Hot Spares

RAID-5 MD

FS Operations

Disksets
6
Concatenation
Striping
Expanding File Systems
Hot Spares
RAID 5
Mirroring
Disksets
RAID Levels
RAID Overview
SDS Software
SDS Installation
SDS User Interfaces
1. RAID 0
MD State Database
Concats & Stripes
2. RAID 1
Mirrors
Hot Spares
3. RAID 0+1
RAID-5 MD
FS Operations
4. RAID 3
Disksets
5. RAID 5
7
RAID Overview
SDS Software
RAID 0, Concatenation
SDS Installation
SDS User Interfaces
MD State Database
Concats & Stripes
FS 1
Mirrors
Hot Spares
RAID-5 MD
FS 2
FS Operations
Disksets
FS 3
8
RAID
Management
Software
Virtual
FS
RAID 0, Striping
RAID Overview
SDS Software
SDS Installation
SDS User Interfaces
FS 1
MD State Database
Concats & Stripes
Mirrors
Hot Spares
FS 2
RAID-5 MD
FS Operations
Disksets
9
FS 3
RAID
Management
Software
FS 1
FS 2
FS 3
RAID 1, Mirroring
RAID Overview
SDS Software
SDS Installation
SDS User Interfaces
Data
MD State Database
FS 1
Concats & Stripes
Mirrors
FS 2
FS 3
FS 4
RAID
Management
Software
Hot Spares
RAID-5 MD
FS 1
FS Operations
FS 2
Disksets
FS 3
FS 4
Mirror
10
FS 1
FS 2
FS 3
FS 4
RAID 0+1
RAID Overview
SDS Software
SDS Installation
SDS User Interfaces
FS 1
FS 1
FS 2
FS 2
FS 3
MD State Database
FS 4
Concats & Stripes
FS 5
Mirrors
RAID
Management
Software
Striping
FS 3
FS 4
FS 5
FS 1
FS 6
FS 6
FS 7
FS 7
FS 8
FS 8
FS 2
Hot Spares
Mirroring
FS 1
FS 2
FS 2
FS 7
FS 3
FS 8
FS 4
FS 5
11
FS 4
FS 1
FS 3
Disksets
FS 3
FS 5
RAID-5 MD
FS Operations
RAID
Management
Software
RAID
Management
Software
Striping
FS 4
FS 5
FS 6
FS 6
FS 7
FS 7
FS 8
FS 8
FS 6
RAID Overview
RAID 3, Striping with Parity
SDS Software
SDS Installation
FS 1
FS 4
SDS User Interfaces
MD State Database
FS 1
Concats & Stripes
FS 2
FS 5
Mirrors
FS 3
FS 6
FS Operations
Disksets
P(1-3)
P(2-4)
P(5-6)
12
FS 2
FS 3
FS 4
FS 5
Hot Spares
RAID-5 MD
RAID
Management
Software
FS 6
RAID Overview
SDS Software
RAID 5, Distributed Parity
SDS Installation
FS 1
SDS User Interfaces
MD State Database
FS 4
FS 7
P(10-12)
FS 1
Concats & Stripes
FS 2
FS 2
Mirrors
FS 3
FS 5
FS 4
P(7-9)
Hot Spares
RAID-5 MD
FS Operations
FS 10
FS 3
P(4-6)
FS 8
Disksets
FS 11
RAID
Management
Software
FS 5
FS 6
FS 7
FS 8
FS 9
FS 10
FS 11
P(1-3)
FS 6
FS 9
FS 12
13
FS 12
RAID Overview
SDS Software
SDS Installation
SDS User Interfaces
MD State Database
Concats & Stripes
Mirrors
Hot Spares
RAID-5 MD
FS Operations
Disksets
14
Introduction
RAID Overview
SDS Software
SDS Installation
SDS User Interfaces
MD State Database
DiskSuite Manage:


Large Number of Disks
Data on Disks
Concats & Stripes
Mirrors
DiskSuite Tasks
Hot Spares

RAID-5 MD

Storage Capacity: metadevices
Data Availability: Mirrors, RAID5 metadevices
FS Operations
Disksets
DiskSuite, Virtual Disks

15
Metadevice
Planning DiskSuite
RAID Overview
SDS Software
SDS Installation
Setting Priorities:
SDS User Interfaces
MD State Database

Performance:
Availability: Mirroring
Hardware Cost: Striping
Concats & Stripes
Mirrors
Hot Spares

RAID-5 MD
Availability:
Performance: Mirroring
Hardware Cost: RAID5
FS Operations
Disksets

Hardware Cost:
Availability: RAID5
Performance: Striping
16
RAID Overview
SDS Software
SDS Installation
SDS User Interfaces
MD State Database
State Database Replicas
Replicas Stores:


DiskSuite Configuration
State Information
Concats & Stripes
Mirrors
Planning Replicas:
Hot Spares

RAID-5 MD

FS Operations

Disksets
17
One Disk: 3 replicas on one slice
Two-Four Disks: 2 replicas on each
Five or more Disks: 1 on each
RAID Overview
SDS Software
SDS Installation
SDS User Interfaces
State Database Replicas
Creating Replicas:

MD State Database

Concats & Stripes

Mirrors

swap -l
swap -d
swap -a
Hot Spares
RAID-5 MD
FS Operations

Disksets



18
Small slices (520 MB)
Slices should NOT contain data!
Backup your data!
Allocating Space from swap partition!
metadb -a -f -c
-a Add
-c Number of replicas
-f Force
Creating Replicas
RAID Overview
SDS Software
SDS Installation
Examples:
SDS User Interfaces
MD State Database
Concats & Stripes
Creating 2 Replicas on 3 Disks:

metadb -a -f -c 2 c0t1d0s3 c1t1d0s3 c2t1d0s3
Mirrors
Hot Spares
RAID-5 MD
FS Operations
Disksets
19
Creating 3 replicas on 1 Disk:

metadb -a -f -c 3 c0t0d0s3
DiskSuite Objects
RAID Overview
SDS Software
SDS Installation
SDS User Interfaces
Object:

Assigning physical device to a DiskSuite name
MD State Database
Concats & Stripes
Object:
Mirrors

Hot Spares

Stripes
Concatenations
Mirrors
RAID5
RAID-5 MD
FS Operations
Disksets


20
Replicas
Metadevice
Hot Spare Pools
Disksets
Objects, Replicas
RAID Overview
SDS Software
SDS Installation
SDS User Interfaces
MD State Database
Creating Additional Replica:


metadb -a c0t2d0s0
metadb
Concats & Stripes
Mirrors
Hot Spares
RAID-5 MD
FS Operations
Disksets
21
Creating 2 Additional Replicas:

metadb -a -c 2 c0t2d0s0
Objects, Stripes
RAID Overview
SDS Software
SDS Installation
SDS User Interfaces
One Stripe of 2 slices:

metainit d10 1 2 c0t1d0s2 c0t2d0s2
MD State Database
Concats & Stripes
Mirrors
One Stripe of 3 slices:

metainit d20 1 3 c0t1d0s2 c0t2d0s2 c0t3d0s2
Hot Spares
RAID-5 MD
FS Operations
Disksets
22
Deleting Meta Devices

metaclear -a
RAID Overview
SDS Software
SDS Installation
SDS User Interfaces
Objects, Concatenation
Creating a Concatenation of 2 Slices:

metainit d25 2 1 c0t1d0s2 1 c0t2d0s1
MD State Database
Concats & Stripes
Mirrors
Hot Spares
RAID-5 MD
FS Operations
Disksets
23
Creating a Concatenation of 4 Slices:

metainit d40 4 1 c0t1d0s2 1 c0t2d0s2 1
c0t2d0s3 1 c0t2d1s3
Objects, Mirrors
RAID Overview
SDS Software
SDS Installation
SDS User Interfaces
MD State Database
Mirror:


On different disks
Slices should be the same size!
Concats & Stripes
Mirrors
Types of Mirrors:
Hot Spares

RAID-5 MD

FS Operations

Disksets
24
One Way
Two Way
Three Way
Objects, Mirrors
RAID Overview
SDS Software
SDS Installation
SDS User Interfaces
Creating Two-Way Mirror:

MD State Database

Concats & Stripes

Mirrors

Hot Spares

RAID-5 MD

FS Operations

Disksets

25
metainit -f d51 1 1 c0t0d0s2 (/home)
metainit d52 1 1 c1t0d0s2 (unmounted)
metainit d50 -m d51
umount /home (What if you can’t umount!)
vi /etc/vfstab: /dev/md/dsk/d50
newfs /dev/md/dsk/d50
mount /home (on d50)
metattach d50 d52
Objects, Mirrors
RAID Overview
SDS Software
SDS Installation
SDS User Interfaces
Creating a Mirror from root /

MD State Database

Concats & Stripes

Mirrors

Hot Spares
RAID-5 MD
FS Operations
Disksets
26
metainit -f d11 1 1 c0t3d0s0
metainit d12 1 1 c1t3d0s0
metainit d10 -m d11
metattach d10 d12
RAID Overview
Deleting Mirror Metadevice
SDS Software
SDS Installation
SDS User Interfaces
Detaching a Mirror Meta device

metadetach d50 d51
MD State Database
Concats & Stripes
Mirrors
Hot Spares
RAID-5 MD
FS Operations
Disksets
27
Deleting the Meta Devices
metaclear -a
Objects, RAID5
RAID Overview
SDS Software
SDS Installation
SDS User Interfaces
MD State Database
Concats & Stripes
Mirrors
Hot Spares
RAID-5 MD
FS Operations
Disksets
28
Creating a RAID5 metadevice of 3 slices

metainit d45 -r c2t3d0s2 c3t0d0s2 c4t0d0s2