VERITAS Storage Foundation 4.1 Cross-Platform Data Sharing Administrator’s Guide HP-UX 11i v2 Manufa cturing Part Nu mber: 5 991-121 4 September 2005 Edition 1 Printed in the United States © Copyright 2005 - 2006 Hewlett-Packard Development Company L.P.
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Contents Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii How This Guide Is Organized . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix Getting Help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Alignment Value 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Alignment Value 8K . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Dirty Region Log (DRL) Alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Chapter 2. Setting up Your System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Moving Objects Between CDS and Non-CDS Disk Groups . . . . . . . . . . . . . . . . . . . . . . . 26 Moving Objects Between CDS Disk Groups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Changing Default CDS Setting for Disk Group Creation . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Creating Non-CDS Disk Groups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Upgrading an Older Version Non-CDS Disk Group . . . . . . . . . . . .
When to Convert a File System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 Converting a File System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 Appendix A. Cross-Platform Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 Alignment Value and Block Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preface The VERITAS Storage Foundation Cross-Platform Data Sharing Administrator’s Guide describes how to use the VERITAS Cross-platform Data Sharing (CDS) feature. This guide is intended for system administrators responsible for configuring and maintaining systems using the VERITAS CDS feature. This guide assumes that you have a: ◆ Basic understanding of system administration. ◆ Basic knowledge of the operating systems on all supported platforms.
How This Guide Is Organized How This Guide Is Organized This guide contains information about the following topics: ◆ Chapter 1, “Overview,” gives an introduction to CDS concepts. ◆ Chapter 2, “Setting up Your System,” presents considerations when transferring data between platforms. ◆ Chapter 3, “Maintaining Your System,” describes how to use CDS.
Conventions Conventions Convention Usage Example monospace Used for path names, commands, output, directory and file names, functions, and parameters. Read tunables from the /etc/vx/tunefstab file. monospace (bold) Indicates user input. # ls pubs italic Identifies book titles, new terms, emphasized text, and variables replaced with a name or value. bold See the ls(1) manual page for more information. C:\> dir pubs See the User’s Guide for details.
Technical Support Technical Support For license information (U.S. and Canadian Customers) contact: ◆ Phone: 650-960-5111 ◆ Email: hplicense@mayfield.hp.com For license information (Europe) contact: ◆ Phone: +33.(0)4.76.14.15.29 ◆ Email: codeword_europe@hp-france-gen1.om.hp.com For latest information on available patches visit: ◆ http://itrc.hp.com For technical support visit: ◆ http://welcome.hp.com/country/us/en/support.
1 Overview This chapter presents an overview of Cross-Platform Data Sharing (CDS): ◆ General Concepts ◆ CDS Disk Access and Format ◆ CDS Disk Groups General Concepts CDS provides you with a foundation for moving data between different systems within a heterogeneous environment. The machines may be running HP-UX, AIX, Linux or the SolarisTM operating system (OS), and they may all have direct access to physical devices holding data.
General Concepts Sharing Data Across Platforms It must be emphasized that, while volumes can be exported across platforms, the data on the volumes can be shared only if data sharing is supported at the application level. That is, to make data sharing across platforms possible, it must be supported throughout the entire software stack. For example, if a VxFS file system on a VxVM volume contains files comprising a database, then: ◆ Disks can be recognized (as cds disks) across platforms.
CDS Disk Access and Format The size of the data written may not be an exact multiple of the block size used by the accessing platform. Therefore the accessing platform cannot constrain its I/O within the boundaries of the data on disk. Operating System Data Some Operating Systems (OS) require OS-specific data on disks in order to recognize and control access to the disk.
CDS Disk Access and Format CDS Disk Types The CDS disk format, cdsdisk, is recognized by all VxVM platforms (including Windows). This is the default disk format for all newly created VM disks unless overridden in a defaults file (see “Defaults Files” on page 17). The vxcdsconvert utility is provided to convert other disk formats and types to CDS. Note Disks with format cdsdisk can only be added to disk groups with version 110 or later.
CDS Disk Access and Format AIX Coexistence Label The AIX Coexistence label resides on the disk, and identifies the disk to the AIX volume manager (LVM) as being controlled by VxVM. HP-UX Coexistence Label The HP-UX Coexistence label resides on the disk, and identifies the disk to the HP volume manager (LVM) as being controlled by VxVM. VxVM ID Block The VxVM ID block resides on the disk, and indicates the disk is under VxVM control. It provides dynamic VxVM private region location and other information.
Non-CDS Disk Groups ◆ Encapsulated disks. Note On Solaris and Linux systems, the process of disk encapsulation places the slices or partitions on a disk (which may contain data or file systems) under VxVM control. On AIX and HP-UX systems, LVM volumes may be similarly be converted to VxVM volumes. Device Quotas Device quotas limit the number of objects in the disk group which create associated device nodes in the file system.
Disk Group Alignment Disk Group Alignment One of the attributes of the disk group is the block alignment, which represents the largest block size supported by the disk group.
Disk Group Alignment Alignment Values The disk group block alignment has two values: 1 block or 8k (8 kilobytes). Alignment Value 1 Note Disk groups with version numbers less than 110 are not supported for the Solaris OS on the X86 platform. All disk group versions before version 110 must have a alignment value of 1. Disk groups have an alignment value of 1 after upgrading from pre-version 110 to version 110 or later. Encapsulated disks, which require disk cylinder alignment, have an alignment value of 1.
Disk Group Alignment In a version 110 disk group, a version 20 DCO volume must have: ◆ Minimum region size of 16K ◆ Incremental region size of 8K Note The map layout within a Data Change Object (DCO) volume changed with the release of VxVM 4.0 to version 20. This can accommodate both FastResync and DRL maps within the DCO volume. The original version 0 layout for DCO volumes only accommodates FastResync maps.
Disk Group Alignment 10 VERITAS Storage Foundation CDS Administrator’s Guide
2 Setting up Your System This chapter describes how to set up your initial CDS system.
Creating CDS Disks from Initialized VxVM Disks Using vxdiskadm Use the “Add or initailize one or more disks” option. You are prompted to specify the format. Creating CDS Disks from Initialized VxVM Disks If the disk is already initialized, there are two cases to consider: ◆ Disk Not in a Disk Group ◆ Disk Already in a Disk Group Disk Not in a Disk Group If the disk is not in a disk group: 1.
Creating CDS Disk Groups Creating CDS Disk Groups You can create a CDS disk group (DG) in two ways: ◆ Using vxdg init to Create CDS Disk Groups ◆ Using vxdiskadm to Create CDS Disk Groups Using vxdg init to Create CDS Disk Groups To create a CDS disk group, use the vxdg init command: # vxdg init diskgroup disklist The format defaults to a CDS disk group unless overridden by the /etc/default/vxdg file.
Converting a Non-CDS Disk to a CDS Disk Converting a Non-CDS Disk to a CDS Disk Use the CDS conversion utility (vxcdsconvert) to convert non-CDS disks to CDS disks, to make them portable between different operating systems that are running VxVM with the CDS feature. # vxcdsconvert -g diskgroup [-A] [-d defaults_file] \ [-o novolstop] disk name [attribute=value] ... # vxcdsconvert -g diskgroup [-A] [-d defaults_file] \ [-o novolstop] alldisks [attribute=value] ...
Converting a Non-CDS Disk Group to a CDS Disk Group Converting a Non-CDS Disk Group to a CDS Disk Group Use the CDS conversion utility (vxcdsconvert) to make a VxVM non-CDS disk group (DG) portable between different operating systems that are running versions of VxVM with the CDS feature. This allows existing data to be made shareable in a CDS environment. # vxcdsconvert -g diskgroup [-A] [-d defaults_file] \ [-o novolstop] alignment [attribute=value] ...
Converting a Non-CDS Disk Group to a CDS Disk Group Please refer to the vxcdsconvert(1M) manual page for information on options, attributes, and keywords. Notes ◆ A non-CDS disk group will be upgraded (using the vxdg upgrade command). Also, if the disk group was originally created by the conversion of an LVM Volume Group (VG), then rolling back to the original LVM VG is not an option.
Licensing # vxcdsconvert -g anodg -o novolstop group \ move_subdisks_ok=yes evac_subdisks_ok=yes \ evac_disk_list=anodg11,anodg12,anodg13,anodg14 Licensing The ability to create or import a CDS disk group is controlled by a CDS license. CDS licenses are included as part of the VERITAS Storage Foundation license.
Defaults Files Specifies default values for the cds, default_activation_mode and enable_activation parameters to the vxdg command. (The default_activation_mode and enable_activation parameters are only used with shared disk groups in a cluster.) The following is a sample vxdg defaults file: cds=on See the vxdg(1M) manual page for more information. ◆ /etc/default/vxdisk Specifies default values for the format and privlen parameters to the vxdisk and vxdisksetup commands.
Defaults Files Chapter 2, Setting up Your System 19
Defaults Files 20 VERITAS Storage Foundation CDS Administrator’s Guide
3 Maintaining Your System The section describes the following CDS tasks performed by the system administrator: ◆ ◆ Disk Tasks ◆ Changing the Default Disk Format Setting ◆ Restoring CDS Disk Labels Disk Group Tasks ◆ Changing the Alignment of a Disk Group by Encapsulation ◆ Object Alignment During Volume Creation ◆ Changing the Alignment of a Non-CDS Disk Group ◆ Determining the Setting of the CDS Attribute ◆ Joining Disk Groups ◆ Moving Objects Between CDS and Non-CDS Disk Groups ◆ Chang
Disk Tasks ◆ Displaying Device Quotas for CDS Disk Groups ◆ Creating CDS Disk Groups Using vxdg split ◆ Default Activation of Shared Disk Groups ◆ Additional Considerations When Importing CDS Disk Groups Disk Tasks The following disk tasks are supported: ◆ Changing the Default Disk Format Setting ◆ Restoring CDS Disk Labels Changing the Default Disk Format Setting When disks are put under VxVM control, they are formatted with the default cdsdisk layout.
Disk Tasks If two of the three labels are intact, the disk is still recognized as a cdsdisk (though in the 'error' state) and vxdisk flush can be used to restore the CDS disk labels from their backup copies. Primary labels are at sectors 0, 7, and 16; and a normal flush will not flush sectors 7 and 16. Also, the private area is not updated as the disk is not in a disk group. There is no means of finding a “good” private region to flush from.
Disk Group Tasks Disk Group Tasks The following disk group tasks are supported: ◆ Changing the Alignment of a Disk Group by Encapsulation ◆ Object Alignment During Volume Creation ◆ Changing the Alignment of a Non-CDS Disk Group ◆ Determining the Setting of the CDS Attribute ◆ Joining Disk Groups ◆ Moving Objects Between CDS and Non-CDS Disk Groups ◆ Changing Default CDS Setting for Disk Group Creation ◆ Creating Non-CDS Disk Groups ◆ Upgrading an Older Version Non-CDS Disk Group ◆ Repla
Disk Group Tasks Changing the Alignment of a Non-CDS Disk Group Use the alignment attribute (align) with the vxdg set command to change the alignment value of a version 110 disk group to 1 or to 8KB, as shown here: # vxdg -g diskgroup set align=1 # vxdg -g diskgroup set align=8k Note For a CDS disk group, alignment can only take a value of 8k. Attempts to set the alignment of a CDS disk group to 1 fail unless you first change it to a non-CDS disk group.
Disk Group Tasks Determining the Setting of the CDS Attribute You can use the vxdg list or vxprint commands to determine the state of the CDS attribute, as follows: # vxdg list NAME STATE dgTestSol2 enabled,cds ID 1063238039.206.vmesc1 # vxdg list dgTestSol2 Group: dgTestSol2 dgid: 1063238039.206.vmesc1 import-id: 1024.205 flags: cds version: 110 alignment: 8192 (bytes) ... # vxprint -F %cds -G -g dgTestSol2 on In these examples, the disk group, dgTestSol2, is shown as having the CDS flag set.
Disk Group Tasks Moving Objects Between CDS Disk Groups Use the vxdg move command to move objects between CDS disk groups. The disk group alignment does not change. Refer to the VERITAS Volume Manager Adminstrator’s Guide for examples of using this command. Note This command is not supported for the Solaris OS on the X86 platform. Changing Default CDS Setting for Disk Group Creation You can change the default CDS attribute setting used in creating disk groups by modifying the /etc/default/vxdg file.
Disk Group Tasks Replacing a Disk in a CDS Disk Group To replace a disk in a CDS disk group, use the command sequence: # vxdg -k rmdisk disk_name # vxdg -k adddisk Refer to the VERITAS Volume Manager Administrator’s Guide for an explanation of the -k option. For example: # vxdg -k rmdisk disk1 # vxdg -k adddisk disk1=c1t0d1 where c1t0d1 is the device name of a Solaris disk that is currently being reassigned to disk disk1.
Disk Group Tasks If you need to change the size after creating, you need to remove and rebuild the logs, using the following commands: # vxassist -g diskgroup remove log volume nlog=0 # vxassist -g diskgroup addlog volume nlog=nlogs logtype=drl \ logmap_len=len-bytes [drlloglen=len] Note the following restrictions: ◆ If only logmap_len is specified, the DRL log size is set to the default value (33*DG alignment).
Displaying Information Using vxvol to Set a DRL Map Length You can use vxvol only if the volume is stopped (that is, the DRL is inactive). # vxvol -g dgTestSol2 set logmap_len=512 drlvol The vxvol set command does not change the existing DRL map size. Note When specifying a loglen attribute, specifying a value less than the minimum required (twice the disk group alignment value) results in an error message. The value of loglen is constrained by size of the logging subdisk.
Displaying Information Displaying Traditional DRL Map Size and Log Size Use the vxprint command to display the map length and map alignment of traditional DRL logs: # vxprint -g dg1 -vl drlvols # vxprint -g dg1 -vF '%name %logmap_len %logmap_align' drlvols Displaying the Disk Group Alignment To discover the value in blocks of the alignment that is set on a disk group, use this command: # vxprint -g diskgroup -G -F %align Utilities that print information regarding a disk group record (such as, vxprint and
Displaying Information logging: type=REGION loglen=528 serial=0/0 mapalign=16 maplen=512 (enabled) apprecov: seqno=0/0 recovery: mode=default recov_id=0 device: minor=46000 bdev=212/46000 cdev=212/46000 path=/dev/vx/dsk/dgTestSol/drlvol perms: user=root group=root mode=0600 guid: {d968de3e-1dd1-11b2-8fc1-080020d223e5} Listing Offset and Length Information Use the vxprint command with the -b option to output all offset and length information in units of 512 bytes.
Default Activation of Shared Disk Groups Displaying Device Quotas for CDS Disk Groups Use the vxprint -lG command to display the maximum number of devices in a CDS disk group. For example, to display the maximum number of devices in the CDS disk group cdsdg1, you can use a command of the form: # vxprint -lG cdsdg1 The output is similar to the following: group: dg1 info: dgid=1027365608.1064.
Creating CDS Disk Groups Using vxdg split Creating CDS Disk Groups Using vxdg split You can use the vxdg split command to create a CDS disk group from an existing CDS disk group. The new (target) and original (source) disk group retain the same CDS attribute; that is, if the source is CDS, then the new disk group is also CDS. The new disk group also has the same alignment as the original disk group. Refer to the VERITAS Volume Manager Adminstrator’s Guide for examples of using this command.
Additional Considerations When Importing CDS Disk Groups ◆ Has the format of any of the disks changed since the target system was last booted? For example, if you use the vxdisksetup -i command to format a disk for VxVM on one system, the vxdisk list command on the target system may still show the format as being auto:none.
Additional Considerations When Importing CDS Disk Groups 36 VERITAS Storage Foundation CDS Administrator’s Guide
4 File System Considerations This chapter describes VERITAS File System (VxFS) support for CDS: ◆ Considerations About Data in the File System ◆ File System Migration ◆ Using the fscdstask Script ◆ One-Time Migration of a File System ◆ Ongoing Migration of a File System ◆ When to Convert a File System ◆ Converting a File System 37
Considerations About Data in the File System Considerations About Data in the File System Data within a file system might not be in the appropriate format to be accessed if moved between different types of systems. For example, files stored in proprietary binary formats often cannot be transferred as is. Files containing databases might not be in a standard format that allows their access when moving a file system between various systems, even if those systems use the same byte order.
Using the fscdstask Script Using the fscdstask Script The fscdstask script performs several CDS tasks as specified by the use of keywords, summarized below. Note The file system migration sections below indicate when each command should be used.
One-Time Migration of a File System # fscdstask status mount_point ◆ For additional help on any of these keywords, enter: # fscdstask help keyword Note The file system might be unmounted and remounted as part of the CDS operation. One-Time Migration of a File System The following example describes a one-time migration of data from the . Some of the following steps require a backup of the file system to be created.
Ongoing Migration of a File System 7. Mount the file system on the target system. Ongoing Migration of a File System The following example describes how to migrate a file system between on an ongoing basis. Some of the following steps require a backup of the file system to be created. To simplify the process, you can create one backup before performing any of the steps instead of creating multiple backups as you go. ▼ To perform an ongoing migration 1.
When to Convert a File System 5. Use the fscdsconv command to convert the file system to the opposite endian, if required. See “Converting a File System” on page 43. 6. Make the physical storage and Volume Manager logical storage accessible on the system by exporting the disk group from the source system and importing the disk group on the target system after resolving any other physical storage attachment issues. See “Maintaining Your System” on page 21 for more information. 7.
Converting a File System Converting a File System Use the fscdsconv command to convert the byte order of a file system. ▼ To convert the byte order of a file system 1. Determine if you must convert the file system (see “When to Convert a File System” on page 42). 2. Determine the disk layout version of the file system that you must convert.
Converting a File System 6. Use the fscdsconv command to convert the file system. # fscdsconv -f recovery_file special recovery_file is the name of the recovery file to be created by the fscdsconv command. special is the raw device or volume that contains the file system to be converted. Include the file system chosen in step 4 when designating the recovery file.
Converting a File System 8. If a failure occurs during the conversion, the failure could be one of the following cases: ◆ System failure. ◆ fscdsconv failure due to program defect or abnormal termination resulting from user actions. In either case, the file system being converted is no longer in a state in which it can be mounted or accessed by normal means through other VxFS utilities.
Converting a File System 46 VERITAS Storage Foundation CDS Administrator’s Guide
A Cross-Platform Transfer This appendix contains notes on considerations for data transfer between operating system platforms with different inherent characteristics. Alignment Value and Block Size On the AIX, Linux and Solaris operating systems, an alignment value of 1 is equivalent to a block size of 512 bytes. On the HP-UX operating system, it is equivalent to a block size of 1024 bytes. The block size on HP-UX is different from that on other supported platforms.
Importing Disk Groups Between Linux and Non-Linux Machines Importing Disk Groups Between Linux and Non-Linux Machines A disk group created on non-Linux platforms typically has device numbers above 1000. When that disk group is imported on a Linux machine with a pre-2.6 kernel, the devices are reassigned minor numbers below 256. If this disk group is now imported to a non-Linux machine, all device numbers will be less than 256.
Data Migration Example 6. Check the integrity of the file system, and then mount it on a suitable mount point: # fsck -F vxfs /dev/vx/rdsk/datadg/snapvol # mount -F vxfs /dev/vx/dsk/datadg/snapvol /mnt 7. Confirm whether the file system can be converted to the target operating system: # fscdstask validate Linux /mnt 8. Unmount the snapshot: # umount /mnt 9. Convert the file system to the opposite endian: # fscdsconv -f /tmp/fs_recov/recov.
Data Migration Example 50 VERITAS Storage Foundation CDS Administrator’s Guide
B Error Codes and Error Recovery Error Codes and Required Actions Error Number Message Action 329 Cannot join a non-CDS disk group and a CDS disk group Change the non-CDS disk group into a CDS disk group (or vice versa), then retry the join operation. 330 Disk group is for a different platform Import the disk group on the correct platform. It cannot be imported on this platform.
Error Codes and Required Actions Error Number Message Action 337 Subdisk plex offset violates disk group alignment Ensure that sub-disk plex offset value is a multiple of 8K. 338 Plex stripe width violates disk group alignment Ensure that plex stripe width value is a multiple of 8K. 339 Volume or log length violates disk group alignment Ensure that volume length value is a multiple of 8K.
Appendix B, Error Codes and Error Recovery 53
54 VERITAS Storage Foundation CDS Administrator’s Guide
Glossary AIX coexistence label Data on disk which identifies the disk to the AIX volume manager (LVM) as being controlled by VxVM. The contents has no relation to VxVM ID Blocks. back-rev disk group A disk group created using a version of VxVM released prior to the release of CDS. Adding CDS functionality rolls over to the latest disk group version number; see also current-rev disk group.
cluster A set of host machines (nodes) that shares a set of disks. cluster file system See CFS. current-rev disk group A disk group created using a version of VxVM providing CDS functionality; however, the CDS attribute is not set. If the CDS attribute is set for the disk group, the disk group is called a CDS disk group. data change object See DCO. DCO (Data Change Object) A VxVM object that is used to manage information about the FastResync maps in the DCO volume.
disk group A set of disks that are under VxVM control and share a common configuration. A disk group configuration is a set of records containing detailed information on existing VERITAS Volume Manager objects (such as disk and volume attributes) and their relationships. Each disk group has an administrator-assigned name. Volumes can only be created on disks that belong to disk groups. disk media name A logical or administrative name chosen for a disk that is under the control of VxVM, such as disk03.
object group A group of objects of the same type. Each object group has a group icon and a group name. In VxVM, object groups include disk groups, disks, volumes, controllers, free disk pool disks, uninitialized disks, and file systems. object tree A dynamic hierarchical display of VERITAS Volume Manager objects and other objects on the system. Each node in the tree represents a group of objects of the same type.
volume A virtual disk or entity that is made up of portions of one or more physical disks. VxFS VERITAS File System. VxVM VERITAS Volume Manager. VxVM ID block Data on disk that indicates the disk is under VxVM control. The VxVM ID Block provides dynamic VxVM private region location, GUID, and other information.
60 VERITAS Storage Foundation CDS Administrator’s Guide
Index Symbols /etc/default/vxassist defaults file 17 /etc/default/vxcdsconvert defaults file 18 /etc/default/vxdg defaults file 18 /etc/default/vxdisk defaults file 18 /etc/default/vxencap defaults file 18 /etc/vx/darecs file 12 creating 11 changing CDS setting 27 changing default CDS setting 27 changing default disk format setting 22 changing disk format 22 co-existence label 5 concepts 1 converting non-CDS disks to CDS 13 converting non-CDS disks to CDS disks 14 creating a DRL log 29 creating CDS disk gr
non-CDS 7 disk group alignment 25 displaying 31 disk groups creating 27 joining 26 upgrading 27 disk quotas setting 28 disk types 4 disks effects of formatting or partitioning 34 displaying device quotas 33 displaying disk group alignment 31 displaying DRL log size 31 displaying DRL map size 31 displaying log map values 31 displaying log size 31 displaying v_logmap values 31 displaying volume log map values 31 DRL log creating 29 DRL log size displaying 31 setting 28 DRL logs creating 29 DRL map length 30 D
vxdctl enable 34 vxdg init 13 vxdg split 34 vxdisk scandisks 34 vxdiskadm 12, 13 Index vxdisksetup 11 VxVM devices 2 vxvol 30 63
