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expand an raid 0+1 array

Holger Glaess
Occasional Visitor

expand an raid 0+1 array

hi

my system is an hp dl380 g4 with 6 harddisk with 72GB.

ist setup the system as db server under Redhat AS4 with an raid0+1 .
now i replace 2 disk with 146 gb and will now expand the capacity of logical drive to the right size but the acu says:
"
=> controller slot=0 modify size=max

Warning: Extension may not be supported on certain operating systems.
Performing extension on these operating systems can cause data to
become inaccessible. See ACU documentation for details. Continue?
(y/n) y


Error: This operation is not supported with the current configuration. Use the
"show" command on devices to show additional details about the
configuration.
"

whats wrong ?

a=> controller slot=0 show config

Smart Array 6i in Slot 0 ()

array A (Parallel SCSI, Unused Space: 0 MB)

logicaldrive 1 (203.5 GB, RAID 1+0, OK)

physicaldrive 1:2 (port 1:id 2 , Parallel SCSI, 72.8 GB, OK)
physicaldrive 1:3 (port 1:id 3 , Parallel SCSI, 72.8 GB, OK)
physicaldrive 1:4 (port 1:id 4 , Parallel SCSI, 72.8 GB, OK)
physicaldrive 1:5 (port 1:id 5 , Parallel SCSI, 72.8 GB, OK)
physicaldrive 2:0 (port 2:id 0 , Parallel SCSI, 146.8 GB, OK)
physicaldrive 2:1 (port 2:id 1 , Parallel SCSI, 146.8 GB, OK)

holger


1 REPLY
Bernhard Mueller
Honored Contributor

Re: expand an raid 0+1 array

Holger,

you need disks of the same size in your array, only if *all* disks hve been replaced by larger ones, then the additional capacity becomes available.

as long as there is still a 72GB disk in the array the controller will only use 72GB on each disk and the rest remains unavailable.

Regards,
Bernhard