3Ware 9650SE-2LPB-10 CLI Guide - Page 81

Migration Process, Example of splitting a mirror, Example of capacity expansion

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Unit Object Commands Migration Process In all cases of migration, the background migration process must be completed before the newly sized unit is available for use. You can continue using the original unit during this time. Once the migration is finished, a reboot will be required if you are booted from the unit. For secondary storage, depending on your operating system, you may need to first unmount the unit, then use CLI commands to 'remove' and 'rescan' the unit so that the operating system can see the new capacity, and then remount the unit. For details see "/cx/ux remove [noscan] [quiet]" on page 65 and "/cx rescan [noscan]" on page 43. You may also need to resize the file system or add a new partition. For instructions, consult the documentation for your operating system. Warning: It is important that you allow migration to complete before adding drives to the unit. Making physical changes to the unit during migration may cause the migration process to stop, and can jeopardize the safety of your data. Example of splitting a mirror //localhost> /c1/u3 migrate type=single Indicates that u3 should be split into Single units. In this case, u3 is a RAID-1 and the Migrate command splits u3 into u3 and ux, each with a RAID type of Single. Warning: Make sure that no I/O is pending before splitting a mirror. If the Raid 1 is the boot device, you should boot from a different device before splitting the mirror. Example of capacity expansion //localhost> /c0/u3 migrate type=raid10 disk=10-11 stripe=16 Indicates that the destination unit has a RAID type of raid10 and has added the disks 10 and 11 to the disks in the existing unit u3. Example of migrate output The following is an example of how migrating units will be displayed. In this example, the report indicates that /c0/u3 is a migrating unit with 39% completion. The report also indicate that Source Unit su0 is of type RAID-1 and Destination Unit du0 is of type RAID-10. www.3ware.com 75

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Unit Object Commands
www.3ware.com
75
Migration Process
In all cases of migration, the background migration process must be
completed before the newly sized unit is available for use. You can continue
using the original unit during this time. Once the migration is finished, a
reboot will be required if you are booted from the unit. For secondary storage,
depending on your operating system, you may need to first unmount the unit,
then use CLI commands to ‘remove’ and ‘rescan’ the unit so that the
operating system can see the new capacity, and then remount the unit. For
details see “/cx/ux remove [noscan] [quiet]” on page 65 and “/cx rescan
[noscan]” on page 43.
You may also need to resize the file system or add a new partition. For
instructions, consult the documentation for your operating system.
Example of splitting a mirror
//localhost> /c1/u3 migrate type=single
Indicates that u3 should be split into Single units. In this case, u3 is a RAID-1
and the Migrate command splits u3 into u3 and u
x
, each with a RAID type of
Single.
Example of capacity expansion
//localhost> /c0/u3 migrate type=raid10 disk=10-11 stripe=16
Indicates that the destination unit has a RAID type of raid10 and has added
the disks 10 and 11 to the disks in the existing unit u3.
Example of migrate output
The following is an example of how migrating units will be displayed. In this
example, the report indicates that
/c0/u3
is a migrating unit with 39%
completion. The report also indicate that Source Unit
su0
is of type RAID-1
and Destination Unit
du0
is of type RAID-10.
Warning:
It is important that you allow migration to complete before adding drives
to the unit. Making physical changes to the unit during migration may cause the
migration process to stop, and can jeopardize the safety of your data.
Warning:
Make sure that no I/O is pending before splitting a mirror. If the Raid 1 is
the boot device, you should boot from a different device before splitting the mirror.