It is possible to add more logs to a RAID-5 volume at a later time. The number of logs must equal the number of disks that is specified to logdisk. Ncol=3 nlog=2 logdisk=mydg07,mydg08 mydg04 mydg05 mydg06 # vxassist -b -g mydg -o ordered make volraid 10g layout=raid5 \ It also creates two RAID-5 logs on disks mydg07 and mydg08. logdisk= disk \įor example, the following command creates a 3-column RAID-5 volume with the default stripe unit size on disks mydg04, mydg05 and mydg06. Use the following form of the vxassist command to specify the disks from which space for the logs is to be allocated: # vxassist -o ordered make volume length \ If you use ordered allocation when creating a RAID-5 volume on specified storage, you must use the logdisk attribute to specify on which disks the RAID-5 log plexes should be created. Veritas Volume Manager - VxVM 7 - Linux - Create DiskGroup, Volumes and Filesystems - YouTube Create Disk Group, Volumes and File systems:- Initialize the disk vxdisksetup -i sdb. Having two RAID-5 log plexes for each RAID-5 volume protects against the loss of logging information due to the failure of a single disk. These log plexes should be located on different disks. It is suggested that you configure a minimum of two RAID-5 log plexes for each RAID-5 volume. To support concurrent access to the RAID-5 array, the log should be several times the stripe size of the RAID-5 plex. RAID-5 logs can be concatenated or striped plexes, and each RAID-5 log associated with a RAID-5 volume has a complete copy of the logging information for the volume. If you require RAID-5 logs, you must use the logdisk attribute to specify the disks to be used for the log plexes. It also creates two RAID-5 logs rather than the default of one log. When you want to inspect a large setup (or sometimes even a small one), its output ( vxprint) can be unclear, even cryptic. VERITAS Software Corporation makes no warranty of any kind with regard to this manual, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. Veritas Volume Manager (VxVM) is a popular and powerful, enterprise-class storage management tool. This creates a RAID-5 volume with the default stripe unit size on the default number of disks. VERITAS Volume Manager 4.0 Installation Guide Solaris Disclaimer The information contained in this publication is subject to change without notice. Specify the -b option if you want to make the volume immediately available for use.įor example, to create the RAID-5 volume volraid together with 2 RAID-5 logs in the disk group, mydg, use the following command: # vxassist -b -g mydg make volraid 10g layout=raid5 nlog=2 To create a RAID-5 volume, use the following command: # vxassist make volume length layout=raid5 \ 0 ratings 0 found this document useful (0 votes) 32 views. Do not create a RAID-5 volume with more than 8 columns because the volume will be unrecoverable in the event of the failure of more than one disk. Veritas Volume Manager - Free download as Word Doc (.doc), PDF File (.pdf), Text File (.txt) or read online for free.
0 Comments
Leave a Reply. |