On Apr 11, 2012, at 8:15 AM, Bruce Hayden wrote: > You need the storage to be "standby" and not "reserved". Change your > command to: > "DEFINE STORAGE AS 700M STANDBY 300M" > > As was discussed in another thread, "reserved" storage is memory that > may become available (either to your virtual machine or to an LPAR) > but is not currently available. "Standby" storage *is* available and > can be dynamically added to your virtual machine or to an LPAR. In an > LPAR, the amount of standby storage can change if other LPARs have > unassigned storage added to their storage. In a virtual machine, you > control the amount of standby storage vs. reserved storage with the CP > command. > > To add it to Linux, look at the "Device Drivers" book for SLES 11: > http://public.dhe.ibm.com/software/dw/linux390/docu/l26edd01.pdf
For RHEL: http://public.dhe.ibm.com/software/dw/linux390/docu/l26fdd00.pdf (see Chapter 25 "Managing hotplug memory") > > 2012/4/11 Lu GL Gao <[email protected]>: >> >> How to dynamically increase/decrease storage for linux running on z/VM? >> >> Assumption: Define LPAR profile with 4G initial and 0 reserved storage. >> z/VM version is 5.4 >> User Direct statement for linux guest is "USER LNX1 LNX1 1G 2G >> EG" >> Objective: Dynamically increase/decrease guest storage. >> >> Before booting linux, use command"DEFINE STORAGE AS 700M RESERVED 300M" to >> set 300M reserved storage for linux. >> >> >> Question 1: If linux guest is SUSE11 or above, how to dynamically >> increase/decrease storage ?? >> >> Question 2: If linux guest is Redhat, how to dynamically increase/decrease >> storage ?? >> >> >> >> >> Best Regards! >> >> Gao Lu (高路) >> I/T Specialist >> Global Technology Services >> IBM Global Services (China) Company Limited. >> Address:18/F, Pangu Plaza, No.27, Central North 4th Ring Road, Chaoyang >> District, Beijing, 100101 >> 地址：北京市朝阳区北四环中路27号盘古大观写字楼18层，100101 >> BeiJing 100027, PRC >> Cell Phone: 15001327619 >> Internet ID: [email protected] > > > > -- > Bruce Hayden > z/VM and Linux on System z ATS > IBM, Endicott, NY > > ---------------------------------------------------------------------- > For LINUX-390 subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO LINUX-390 or visit > http://www.marist.edu/htbin/wlvindex?LINUX-390 > ---------------------------------------------------------------------- > For more information on Linux on System z, visit > http://wiki.linuxvm.org/ ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For more information on Linux on System z, visit http://wiki.linuxvm.org/
