Novell LINUX ENTERPRISE SERVER 10 SP3 - ARCHITECTURE-SPECIFIC, Руководство администратора, Страница: 87 / 132

Managing Software RAIDs with EVMS 87
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8b Select the RAID device you created in Step 5 , such as
/dev/evms/md/md0
.
8c Specify the location where you want to mount the device, such as
/home
.
8d Click Mount .
9 Enable
boot.evms
to activate EVMS automatically at reboot.
9a In YaST, select System > System Services (Run Level) .
9b Select Expert Mode .
9c Select Boot.evms .
9d Select Set/Reset .
9e Select Enable the Service .
10 Edit the
/etc/fstab
file to automount the RAID mount point created in Step 8c , or you can
mount the device manually from
evmsgui
.
6.3 Expanding a RAID
This section explains how to expand a RAID by adding segments to it.
IMPORTANT: Before you can expand the size of a RAID device, you must deactivate it.
Š
Section 6.3.1, “Adding Mirrors to a RAID 1 Device,” on page 87
Š
Section 6.3.2, “Adding Segments to a RAID 4 or 5,” on page 88
6.3.1 Adding Mirrors to a RAID 1 Device
In a RAID 1 device, each member segment contains its own copy of all of the data stored in the
RAID. You can add a mirror to the RAID to increase redundancy. The segment must be at least the
same size as the smallest member segment in the existing RAID 1 device. Any excess space in the
segment is not used. Ideally, all member segments of a RAID 1 device are the same size.
Adding an Available Segment as the New Mirror
1 Deactivate the RAID 1 device.
2 Use the Add Active (
addactive
plug-in) function.
3 From the list of available segments, select one that is the same size or larger than the smallest
existing member of the RAID device.
4 Reactivate the RAID device.
Activating A Spare Disk as the New Mirror
1 If you have not set up a spare disk, do it now.
For information, see
Section 6.4, “Adding or Removing a Spare Disk,” on page 88 .
2
Use the Activate Spare (
activatespare
plug-in) function to add it to the RAID 1 device as a
new mirror.