Sun Microsystems Sun Enterprise DR 10000 User's Manual
Contents
1. swap space configuring I O controllers across boards 5 T tape devices and ST_UNLOADABLE flag 9 16 Sun Enterprise 10000 DR Configuration Guide May 20022. 3 detach closing devices 9 pageable memory and swap space during detach 5 RSM 2000 and detach 10 Sun StorEdge A3000 and detach 10 swap space and detach 5 detach and processors 13 detach safe tape devices 9 devices detach safe 4 detach unsafe 4 11 preparing for detach 9 suspend safe 4 suspend unsafe 4 disk swap space and detach 5 DR where to execute commands 3 DR models 2 0 model 2 3 0 model 2 drivers suspend safe 5 F files st conf ST_UNLOADABLE flag and tape devices 9 forcible conditions and quiesce failures 11 L loss of connection 14 M manually suspending suspend unsafe devices 11 moveboard 1M 3 multipathing 3 15 N tape devices detach safe 9 network drivers suspend unsafe 11 tape devices suspend unsafe 9 timeout RPC 14 P pageable memory and swap space during detach 5 processors and detach 13 Q quiescence 4 failure reasons 10 forcible conditions 11 suspend unsafe devices 10 R rcfgadm 1M 3 RPC timeout 14 RSM 2000 and detach 10 S showdevices 1M 3 ST_UNLOADABLE flag and tape devices 9 Sun StorEdge A3000 and detach 10 suspend failures and forciable conditions 11 suspend reasons it may fail 10 suspending OS and suspend unsafe devices 10 suspend safe drivers listing 5 suspend unsafe device and quiescing OS 10 suspend unsafe devices manually suspending 11 suspend unsafe tape devices 9 swap space configuring for detach 5
3. 10 For more information about using DR 3 0 see the Sun Enterprise 10000 Dynamic Reconfiguration DR User Guide part number 816 3627 10 Enhancements in DR Model 3 0 The DR 3 0 model offers the following enhancements to DR 2 0 a DR3 0 has a framework that offers better integration with applications through the Reconfiguration Coordination Manager DR 3 0 supports network multipathing using IPMP Where to Execute DR Commands You execute DR operations from either of two places from the system service processor SSP by using the SSP commands addboard 1M moveboard 1M deleteboard 1M rcfgadm 1M and showdevices 1M or from the domain using the cfgadm 1M command Requirements for Multipathing in DR 3 0 To use multipathing on DR model 3 0 domains run IPMP the IP multi pathing software provided with the Solaris 8 operating environment and MPxIO software included in Solaris Kernal Update Patches 111412 02 111413 02 111095 02 111096 02 and 111097 02 Getting Started Before you run DR operations on your domain you must a Be familiar with how devices must be configured before DR detach operations as explained in Device Prerequisites on page 14 Chapter 1 Configuring DR 3 4 m Verify that you have sufficient swap space for your domain For details see Allocating Sufficient Domain Swap Space on page 15 m Qualify any third party device drivers as described in Qualifying Third Party De
4. reboots you may want to perform various configuration tasks then reboot the domain 5 After the reboot completes successfully review the var adm messages file for messages that verify the DR configuration changes Sun Enterprise 10000 DR Configuration Guide May 2002 For example if you enabled the kernel cage the following message is generated NOTICE DR Kernel Cage is Enabled To Enable the Kernel Cage A caged kernel confines the nonpageable memory to a minimal most often one number of systems boards By default the kernel cage is disabled preventing DR detach operations If you plan to perform DR detach operations you must enable the kernel cage by using the system 4 variable kernel_cage_ enable as explained in the following procedure Be aware that DR attach or addboard operations are enabled by default regardless of the setting of the kernel_cage_enable variable Note Before the release of version 7 of the Solaris software the dr max mem variable was used to enable DR The dr max mem variable is not used to enable DR in version 7 and subsequent versions of the Solaris software Using a text editor edit the etc system file for the domain so that kernel_cage_enable equals 1 set kernel_cage_enable 1 After all DR configuration tasks are complete be sure to reboot the domain so that this configuration can take effect Verify this configuration change in the var adm messa
5. the DR configuration you must reboot your domain If you want to minimize the number of domain reboots determine which configuration tasks are applicable to your DR environment and then perform the appropriate set of configuration tasks before rebooting your domain 1 If you intend to perform DR detach operations enable the kernel cage as explained in To Enable the Kernel Cage on page 17 2 For devices do the following If you set network configuration parameters manually make these settings permanent as described in To Set Permanent Driver Parameters for Network Drivers on page 17 If you have soc and pln devices enable device suspension as described in To Enable Device Suspension for the soc and pln Drivers on page 18 a If you have suspend unsafe devices specify those devices in the unsafe driver list which blocks a quiesce from starting For details see To Specify an Unsafe Driver List on page 18 a If you have tape devices that are not supported by Sun Microsystems make those devices detach safe For details see To Make an Unsupported Tape Device Detach Safe on page 19 3 If you want to use multipathing configure your domain for multipathing and run the appropriate multipathing software on the domain 4 Reboot the domain to process the configuration changes Note You must reboot the domain after any changes to the DR configuration If you want to minimize the number of
6. BE LIABLE TO ANY PARTY FOR DIRECT INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OF THIS SOFTWARE ITS DOCUMENTATION OR ANY DERIVATIVES THEREOF EVEN IF THE AUTHORS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE This is scotty a simple tcl interpreter with some special commands to get information about TCP IP networks Copyright c 1993 1994 1995 J Schoenwaelder TU Braunschweig Germany Institute for Operating Systems and Computer Networks Permission to use copy modify and distribute this software and its documentation for any purpose and without fee is hereby granted provided that this copyright notice appears in all copies The University of Braunschweig makes no representations about the suitability of this software for any purpose It is provided as is without express or implied warranty Contents Preface vi Before You Read This Book vi How This Book Is Organized vi Using UNIX Commands vii Typographic Conventions vii Shell Prompts vii Related Documentation viii Accessing Sun Documentation Online viii Sun Welcomes Your Comments ix Configuring DR 1 DR Models 2 Enhancements in DR Model 3 0 3 Where to Execute DR Commands 3 Requirements for Multipathing in DR 3 0 3 Getting Started 3 Device Prerequisites 4 Allocating Sufficient Domain Swap Space 5 Qualifying Third Party Device Drivers 5 v Overview of DR Configuration Tasks 6 To Enable the Kernel Cage 7 To Set Permanen
7. Is Organized This guide contains one chapter that describes how to configure and reconfigure a Sun Enterprise 10000 domain before and after a DR operation vi Using UNIX Commands This document does not contain complete information on basic UNIX commands and procedures such as shutting down the system booting the system and configuring devices See the Solaris software documentation that you received with your system for this information Typographic Conventions Typeface or Symbol AaBbCc123 AaBbCc123 AaBbCc123 Meaning The names of commands files and directories on screen computer output What you type when contrasted with on screen computer output Book titles new words or terms words to be emphasized Replace command line variables with real names or values Shell Prompts Examples Edit your login file Use 1s a to list all files 2 You have mail 2 S su Password Read Chapter 6 in the User s Guide These are called class options To delete a file type rm filename Shell C shell C shell superuser Bourne shell and Korn shell Bourne shell and Korn shell superuser vii Sun Enterprise 10000 DR Configuration Guide May 2002 Prompt machine name machine name Related Documentation Application User Reference Installation and Release Notes Title Sun Enterprise 10000 Dynamic Reconfiguration User Guide Sun Enterprise 10000 S
8. Qe SUN microsystems Sun Enterprise 10000 DR Configuration Guide Sun Microsystems Inc 4150 Network Circle Santa Clara CA 95054 U S A 650 960 1300 Part No 816 3630 10 May 2002 Revision A Send comments about this document to docfeedback sun com Copyright 2002 Sun Microsystems Inc 4150 Network Circle Santa Clara CA 95054 U S A All rights reserved This product or document is distributed under licenses restricting its use copying distribution and decompilation No part of this product or document may be reproduced in any form by any means without prior written authorization of Sun and its licensors if any Third party software including font technology is copyrighted and licensed from Sun suppliers Parts of the product may be derived from Berkeley BSD systems licensed from the University of California UNIX is a registered trademark in the U S and other countries exclusively licensed through X Open Company Ltd Sun Sun Microsystems the Sun logo AnswerBook2 docs sun com Solstice DiskSuite Sun FastEthernet Sun Netra Sun Enterprise Sun Enterprise Volume Manager Sun StorEdge Sun Ultra OpenBoot Solaris and UltraSparc are trademarks registered trademarks or service marks of Sun Microsystems Inc in the U S and other countries All SPARC trademarks are used under license and are trademarks or registered trademarks of SPARC International Inc in the U S and other countries Products bearing SPARC tr
9. S client systems Chapter 1 Configuring DR 13 Remote DR Communication In Solaris 9 domains the domain configuration server dcs 1M controls DR operations v To Troubleshoot a Connection Failure During a Solaris 9 DR Model 3 0 Operation 1 Check the domain dcs 1M must be configured in the etc inetd conf file of the domain The following lines must be present in the file sun dr stream tcp wait root usr lib dcs des sun dr stream tcp6 wait root usr lib dcs dcs 2 If the dcs daemon is configured in etc inetd conf kill dcs 1M if it is currently running and send a HUP signal to the inet d 1M daemon to cause it to re read the inetd conf 4 configuration file kill 9 dcs_pid kill HUP inetd_pid where dcs_pid is the process ID of the dcs 1M daemon and inetd_pid is the process ID of the inet d 1M daemon 3 Check the var adm messages file for possible error messages from inet d 1M if it is having trouble starting dcs 1M The dcs 1M daemon executable file resides in the usr 1ib directory 4 Try the DR operation again starting from the beginning 14 Sun Enterprise 10000 DR Configuration Guide May 2002 Index A addboard 1M 3 Cc cfgadm 1M 3 commands addboard 1M 3 cfgadm 1M 3 deleteboard 1M 3 moveboard 1M 3 rcfgadm 1M 3 showdevices 1M 3 configuring swap space I O controllers across boards 5 connection loss of 14 D dcs 1M 14 deleteboard 1M
10. SP 3 5 User Guide System Administration Guide IP Services Sun StorEdge Traffic Manager Software Installation and Configuration Guide Sun Enterprise 10000 InterDomain Networks User Guide Sun Enterprise 10000 Dynamic Reconfiguration Reference Manual Sun Enterprise 10000 SSP 3 5 Reference Manual Sun Enterprise 10000 IDN Configuration Guide Sun Enterprise 10000 IDN Error Messages TCP IP and Data Communications Administration Guide Sun Enterprise 10000 SSP 3 5 Installation Guide and Release Notes Part Number 816 3627 806 7613 806 4075 816 1420 806 4131 806 7617 806 7614 806 5230 806 5231 806 4003 806 7615 Accessing Sun Documentation Online A broad selection of Sun system documentation is located at http www sun com products n solutions hardware docs A complete set of Solaris documentation and many other titles are located at http docs sun com Preface viii Sun Welcomes Your Comments Sun is interested in improving its documentation and welcomes your comments and suggestions You can email your comments to Sun at docfeedback sun com Please include the part number 816 3630 10 of your document in the subject line of your email ix Sun Enterprise 10000 DR Configuration Guide May 2002 CHAPTER 1 Configuring DR This chapter describes key DR functionality and also guides you through the tasks for configuring DR You will find Information on DR models D
11. ademarks are based upon an architecture developed by Sun Microsystems Inc The OPEN LOOK and Sun Graphical User Interface was developed by Sun Microsystems Inc for its users and licensees Sun acknowledges the pioneering efforts of Xerox in researching and developing the concept of visual or graphical user interfaces for the computer industry Sun holds a non exclusive license from Xerox to the Xerox Graphical User Interface which license also covers Sun s licensees who implement OPEN LOOK GUIs and otherwise comply with Sun s written license agreements Federal Acquisitions Commercial Software Government Users Subject to Standard License Terms and Conditions DOCUMENTATION IS PROVIDED AS IS AND ALL EXPRESS OR IMPLIED CONDITIONS REPRESENTATIONS AND WARRANTIES INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY FITNESS FOR A PARTICULAR PURPOSE OR NON INFRINGEMENT ARE DISCLAIMED EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD TO BE LEGALLY INVALID Copyright 2002 Sun Microsystems Inc 4150 Network Circle Santa Clara CA 95054 Etats Unis Tous droits r serv s Ce produit ou document est distribu avec des licences qui en restreignent l utilisation la copie la distribution et la d compilation Aucune partie de ce produit ou document ne peut tre reproduite sous aucune forme par quelque moyen que ce soit sans l autorisation pr alable et crite de Sun et de ses bailleurs de licence s il y en a Le logiciel d t
12. ain may hang However if the domain hangs it will not affect other domains that are running on the Sun Enterprise 10000 system To Force a System Quiescence Caution Exercise care when using the force option To successfully force the operating environment to quiesce you must first manually quiesce the controller Procedures to do that if any are device specific The device must not transfer any data reference memory or generate interrupts during the operation Be sure to test any procedures used to quiesce the controller while it is open before running them on a production system Using the force option to quiesce the operating environment without first successfully quiescing the controller can result in a domain failure and subsequent reboot For Solaris 9 DR model 3 0 operations run the deleteboard 1M or moveboard 1M command with the f option Target Memory Constraints When detaching a board with nonpageable memory DR locates an alternative target memory board to which to copy the nonpageable memory Sun Enterprise 10000 DR Configuration Guide May 2002 If no target board is found for a copy rename operation the deleteboard 1M and moveboard 1M commands display the following error messages respectively deleteboard unconfigure SB2 No available memory target dr 0 SB2 memory moveboard unconfigure SB2 No available memory target dr 0 SB2 memory Processors The boot processor is respon
13. an active driver in the unsafe driver list it aborts the operation and returns an error message The message identifies the active unsafe driver You must manually suspend the device so that the DR operation can be performed 1 Using a text editor edit the platform SUNW Ultra Enterprise 10000 kernel drv ngdr conf file and specify suspend unsafe device drivers as shown below unsupported io drivers driver1 driver2 driver3 where driverx represents each suspend unsafe device driver 2 After all DR configuration tasks are complete reboot the domain so that this configuration can take effect 8 Sun Enterprise 10000 DR Configuration Guide May 2002 v To Make an Unsupported Tape Device Detach Safe For the Solaris 9 operating environment tape devices that are natively supported by Sun Microsystems are suspend safe and detach safe For details refer to the st 7D man page for a list of natively supported drives If a system board to be detached contains a natively supported tape device you can safely detach the board without suspending the device However if you want to use a tape device that is not natively supported by Sun Microsystems you can use it but you must make it detach safe by performing the following steps Edit the kernel drv st conf file with the ST_UNLOADABLE 0x0400 flag set in the entry Refer to the st 7D man page for more information 2 After all DR configuration tasks are c
14. by doing the following a Close all instances of a device by killing any processes that directly open the device or raw partition or by directing the process to close an open device on the board m Run modunload 1M to unload each detach unsafe or loaded device driver Note In situations where you cannot unload a device that has an unsafe driver you can blacklist the board that contains the unsafe device and then reboot the domain You can remove the board later For details on blacklisting refer to the blacklist 1M man page 5 Processes bound to the processors of a board prevent that board from being detached You can use pbind 1M to rebind them to other processors Configuration Changes During DR Operations This section describes a How you can control forcible conditions that affect system quiescence during a DR detach operation in progress m Various configuration changes performed by DR during DR detach operations Controlling Forcible Conditions that Affect System Quiescence If the Solaris operating environment cannot quiesce during a DR detach operation involving a board with nonpageable memory it displays the reason why it cannot quiesce For example a suspend unsafe device is open that cannot be quiesced by the operating environment 10 Sun Enterprise 10000 DR Configuration Guide May 2002 A failure to quiesce due to open suspend unsafe devices is known as a forcible condition You have the option to
15. enu par des tiers et qui comprend la technologie relative aux polices de caract res est prot g par un copyright et licenci par des fournisseurs de Sun Des parties de ce produit pourront tre d riv es des syst mes Berkeley BSD licenci s par l Universit de Californie UNIX est une marque d pos e aux Etats Unis et dans d autres pays et licenci e exclusivement par X Open Company Ltd Sun Sun Microsystems le logo Sun AnswerBook2 docs sun com Solstice DiskSuite Sun FastEthernet Sun Netra Sun Enterprise Sun Enterprise Volume Manager Sun StorEdge Sun Ultra OpenBoot Solaris et UltraSparc sont des marques de fabrique ou des marques d pos es ou marques de service de Sun Microsystems Inc aux Etats Unis et dans d autres pays Toutes les marques SPARC sont utilis es sous licence et sont des marques de fabrique ou des marques d pos es de SPARC International Inc aux Etats Unis et dans d autres pays Les produits portant les marques SPARC sont bas s sur une architecture d velopp e par Sun Microsystems Inc L interface d utilisation graphique OPEN LOOK et Sun a t d velopp e par Sun Microsystems Inc pour ses utilisateurs et licenci s Sun reconna t les efforts de pionniers de Xerox pour la recherche et le d veloppement du concept des interfaces d utilisation visuelle ou graphique pour l industrie de l informatique Sun d tient une licence non exclusive de Xerox sur l interface d utilisation graphique Xero
16. etails on getting started with DR configuration An overview of DR configuration tasks Prerequisite tasks to be completed before a DR detach operation Details on the configuration changes that occur during DR detach operations and how to control certain conditions when a detach operation is in progress Note In this document the phrase DR detach operation refers to the complete detach or removal of a system board This detach operation can be accomplished by using the ADR command deleteboard 1M For instructions on detaching boards from Solaris 9 domains which support only DR model 3 0 refer to the Sun Enterprise 10000 Dynamic Reconfiguration User Guide part number 816 3627 10 DR Models There are two models of DR available for the Sun Enterprise 10000 system DR model 2 0 is sometimes referred to as legacy DR and DR model 3 0 is referred to as next generation DR The following table shows the different versions of the Solaris operating environment and the SSP software that are used with DR models 2 0 and 3 0 DR Model Solaris Software Versions SSP Software Versions 2 0 Solaris 5 1 6 7 and 8 3 3 3 4 or 3 5 3 0 Solaris 8 10 01 and 02 02 3 5 only Solaris 9 Domains running version 9 of the Solaris software support only DR model 3 0 and version 3 5 of the SSP software is required Only one model of DR can run within a domain at a time To check the version of DR that is running use the domain_s
17. ges file The following example is a section from a messages file which indicates that the kernel cage was enabled E DR Kernel Cage is Enabled To Set Permanent Driver Parameters for Network Drivers If you use the ndd 1M command to set the driver configuration parameters for network devices those parameters may not persist after a DR operation Chapter 1 Configuring DR 7 If you want to set the driver configuration parameters permanently set the parameters in the etc systen file or the driver conf file for a specific driver v To Enable Device Suspension for the soc and pin Drivers If your system boards contain soc and pln devices perform the following steps to make those drivers suspend safe 1 Using a text editor edit the etc systen file so that the pln_enable_detach_suspendand soc_enable_detach_suspend variables are set to 1 as in the following example set pln pln_enable_detach_suspend 1 set soc soc_enable_detach_suspend 1 2 After all DR configuration tasks are complete reboot the domain so that this configuration can take effect v To Specify an Unsafe Driver List You can provide the Solaris operating environment with information regarding any suspend unsafe devices in the system by specifying an unsafe driver list in the ngdr conf file DR reads this list when it prepares to suspend the operating environment so that a board containing nonpageable memory can be detached If DR finds
18. nly affects the target domain other domains are not affected If a driver does not support the function DDI_SUSPEND DDI_RESUME the device is considered to be suspend unsafe because the operating environment cannot quiesce if a suspend unsafe device is present If a system quiescence is required for a DR detach operation you must manually suspend a suspend unsafe device so that the quiescence can occur For details see To Manually Suspend a Suspend Unsafe Device on page 111 Sun Enterprise 10000 DR Configuration Guide May 2002 Note The drivers currently released by Sun Microsystems that are known to be suspend safe are st sd isp esp fas sbus pci pci pci qfe and hme Sun FastEthernet nf NPI FDDI qe Quad Ethernet 1e Lance Ethernet the SSA drivers soc pln and ssd and the Sun StorEdge A5000 drivers sf socal and ses For additional information about suspend safe and detach safe device drivers contact your Sun service representative Allocating Sufficient Domain Swap Space The domain swap configuration consists of the swap devices and swapfs memory The domain must contain enough swap space so that it can flush pageable memory For example if you want to remove 1 Gbyte of memory from a 2 Gbyte domain you will need 1 Gbyte of swap space depending on the load Insufficient swap space can prevent the completion of a DR operation The domain swap space must be configured as multiple pa
19. omplete be sure to reboot the domain so that this configuration can take effect AN Preparing for DR Detach Operations You must prepare a board for DR detach operations by following the steps described below Although the following list of tasks implies a sequence of order strict adherence to the order is not necessary These steps apply to boards containing I O or non network devices 1 Unmount file systems For example if you are using Solstice DiskSuite metadevices you must unmount the file system for metadevices that have a board resident partition for example umount partit If you have suspend unsafe devices that manage file systems unmount those file systems before a detach operation If have to manually suspend unsafe devices that manage file systems lock those file systems using the lockfs 1M command before manually suspending the unsafe devices Caution Unmounting shared file systems by using the share 1M utility may affect NFS client systems 2 Remove disk partitions from the swap configuration by using swap 1M Chapter 1 Configuring DR 9 3 If you want to detach a board that hosts Sun StorEdge A3000 controllers make those controllers idle or take them offline manually using the rm6 or rdacutil programs The Sun StorEdge A3000 formerly known as the RSM Array 2000 has dual controller paths with automatic load balancing and automatic failover functionality 4 Close all non network devices
20. retry the operation or you can try to force the quiescence The conditions that cause processes not to suspend are generally temporary in nature You can retry the operation until the quiescence succeeds When you try to force the quiescence you give the operating environment permission to continue with the quiescence even if forcible conditions are still present Doing this forces the operating environment to permit the detach Note that although a detach can be forced to proceed when there are open suspend unsafe devices in the system it is not possible to force a detach when a detach unsafe device resides on the board and its driver is loaded Note Real time processes do not prevent the operating environment from quiescence The most straightforward way to quiesce a domain is to close any suspend unsafe devices For each network driver you must execute the ifconfig 1M command with its down parameter then again with its unplumb parameter refer to the ifconfig 1M man page for more information Note It should be possible to unplumb all network drivers However this action is rarely tested in normal environments and may result in driver error conditions If you use DR Sun Microsystems suggests that you test these driver functions during the qualification and installation phases of any suspend unsafe device If a suspend unsafe device is open and cannot be closed you can manually suspend the device and then force the opera
21. rtitions on disks attached to controllers hosted by different boards With this type of configuration a particular swap partition is not a vital resource because swap partitions can be added and deleted dynamically refer to the swap 1M man page for more information Note When memory swapfs or swap space on a disk is detached there must be enough memory or swap space remaining in the domain to accommodate currently running programs Qualifying Third Party Device Drivers Many third party drivers those purchased from vendors other than Sun Microsystems do not support the standard Solaris modunload 1M interface which is used to unload detach unsafe or suspend unsafe device drivers Conditions that invoke the driver functions occur infrequently during normal operation and the functions are sometimes missing or work improperly Sun Microsystems suggests that you test these driver functions during the qualification and installation phases of any third party device Chapter 1 Configuring DR 5 6 Overview of DR Configuration Tasks This section identifies the various configuration tasks that you must complete before running DR operations on Solaris 9 domains which support only DR model 3 0 Note that it may not be necessary to perform all the tasks described in this section depending on the types of devices on your system boards and the type of DR operation to be performed After you configure DR or whenever you make changes to
22. sible for maintaining the net con BBSRAM buffer Before detaching a board on which the boot processor resides DR assigns the boot processor role to another active online processor Network Devices A detach operation will fail if there are any network interfaces on the board that fit the following conditions In these cases the detach operation fails and DR displays an error message The interface is the primary network interface for the domain that is the interface whose IP address corresponds to the network interface name contained in the file etc nodename Note that bringing down the primary network interface for the domain prevents network information name services from operating which results in the inability to make network connections to remote hosts using applications such as ftp 1 rsh 1 rcp 1 rlogin 1 NFS client and server operations are also affected The interface is on the same subnet as the SSP host for the system that is the subnet of the IP address that corresponds to the SSP host name found in etc ssphostname Bringing down this interface interrupts communication between the host and SSP Because DR operations are initiated on the SSP control of the detach process would be lost Note that the etc ssphostname file contains the name of the SSP that controls the host therefore if you rename the SSP you must manually update the etc ssphostname file Caution Detaching network interfaces may affect NF
23. t Driver Parameters for Network Drivers 7 To Enable Device Suspension for the soc and pln Drivers 8 To Specify an Unsafe Driver List 8 4 4 a lt To Make an Unsupported Tape Device Detach Safe 9 Preparing for DR Detach Operations 9 Configuration Changes During DR Operations 10 Controlling Forcible Conditions that Affect System Quiescence 10 v To Manually Suspend a Suspend Unsafe Device 11 v To Force a System Quiescence 12 Target Memory Constraints 12 Processors 13 Network Devices 13 Remote DR Communication 14 v To Troubleshoot a Connection Failure During a Solaris 9 DR Model 3 0 Operation 14 Sun Enterprise 10000 DR Configuration Guide May 2002 Preface This guide describes the domain side configuration of the Sun Enterprise 10000 server Dynamic Reconfiguration DR feature For information about how to use these features refer to the appropriate document listed in Related Documentation on page viii Before You Read This Book This guide is intended for the Sun Enterprise 10000 system administrator who has a working knowledge of UNIX systems particularly those based on the Solaris operating environment If you do not have such knowledge first read the Solaris user documentation provided with this system and consider UNIX system administration training Also read and be familiar with the TCP IP and Data Communications Administration Guide that is provided with your server How This Book
24. tatus command with its m option available only on domains running version 3 5 of the SSP software Make sure to verify the DR model before you execute any DR commands The following is an example of the domain_status 1M output The DR MODEL column indicates which model is enabled 2 domain_status m DOMAIN A B C D TYPE PLATFORM DR MODEL OS SYSBDS Ultra Enterprise 10000 all A 2 0 DEEA Ultra Enterprise 10000 all A 3 0 5 8 3 4 Ultra Enterprise 10000 all A 2 0 Jeh 5926 Ultra Enterprise 10000 all A 3 0 59s 7 According to this output domain A is running Solaris version 8 software OS 5 8 with DR model 2 0 enabled domain B is running Solaris version 8 software with DR model 3 0 enabled domain C is running Solaris version 7 software OS 5 7 with DR model 2 0 enabled and domain D is running Solaris version 9 software OS 5 9 with DR model 3 0 enabled Only certain commands are available in each model and if you execute a command that is not supported an error message appears on the console Sun Enterprise 10000 DR Configuration Guide May 2002 Caution Before you switch to DR 3 0 in a domain that is running the Solaris 8 10 01 operating environment you must upgrade the SSP software to version 3 5 because previous versions of SSP do not support DR 3 0 operations For more information about using DR 2 0 see the the Sun Enterprise 10000 Dynamic Reconfiguration DR User Guide part number 806 7616
25. ting environment to quiesce After the operating environment resumes you can manually resume the device as explained below Note If you cannot make a device suspend its access to the domain centerplane do not force the operating environment to quiesce Doing so could cause a domain to crash or hang Instead postpone the DR operation until the suspend unsafe device is no longer open To Manually Suspend a Suspend Unsafe Device Remove the usage of the device by performing one or more of the following a Close the device by killing the processes using the device b Ask users not to utilize the device Chapter 1 Configuring DR 11 12 c Disconnect the cables to the device For example if a device that allows asynchronous unsolicited input is open you can disconnect its cables prior to quiescing the operating environment preventing traffic from arriving at the device and the device from accessing the domain centerplane You can reconnect the cables after the operating environment resumes d Unload the device driver by using the modunload 1M command Perform the DR operation again Do the following a Reload the device by using the modload 1M command b Reconnect the cables to the device c Inform users that the device can be used again d Restart any processes associated with the device Caution If you attempt a forced quiesce operation while activity is occurring on a suspend unsafe device the dom
26. vice Drivers on page 15 Device Prerequisites DR requires that drivers for devices on boards involved in DR detach operations be both m Detach safe or not currently loaded A detach safe driver supports the device driver interface DDI function DDI_DETACH This function provides the ability to detach a particular instance of a driver without affecting other instances that are servicing other devices A detach unsafe driver is one that does not support DDI_DETACH If a detach unsafe driver is loaded you must unload it before performing a DR detach operation For details on unloading a detach unsafe device see Preparing for DR Detach Operations on page 19 m Suspend safe or closed A suspend safe device driver supports the quiescence pausing of the Solaris operating environment during the detach of a board that contains nonpageable OBP or kernel memory In order for DR to perform the detach the operating environment must temporarily suspend all processes processors and device activities to unconfigure the memory component A suspend safe device supports the DDI_SUSPEND DDI_RESUME function This function enables a device to be suspended during a system quiescence and then resumed The device managed by the driver will not attempt to access the domain centerplane for example it does not access memory or interrupt the system even if the device is open when the suspend request is made The quiescence o
27. x cette licence couvrant galement les licenci s de Sun qui mettent en place l interface d utilisation graphique OPEN LOOK et qui en outre se conforment aux licences crites de Sun LA DOCUMENTATION EST FOURNIE EN L ETAT ET TOUTES AUTRES CONDITIONS DECLARATIONS ET GARANTIES EXPRESSES OU TACITES SONT FORMELLEMENT EXCLUES DANS LA MESURE AUTORISEE PAR LA LOI APPLICABLE Y COMPRIS NOTAMMENT TOUTE GARANTIE IMPLICITE RELATIVE A LA QUALITE MARCHANDE A L APTITUDE A UNE UTILISATION PARTICULIERE OU A L ABSENCE DE CONTREFA ON Ob Lo a Adobe PostScript Sun Enterprise 10000 SSP Attributions This software is copyrighted by the Regents of the University of California Sun Microsystems Inc and other parties The following terms apply to all files associated with the software unless explicitly disclaimed in individual files The authors hereby grant permission to use copy modify distribute and license this software and its documentation for any purpose provided that existing copyright notices are retained in all copies and that this notice is included verbatim inany distributions No written agreement license or royalty fee is required for any of the authorized uses Modifications to this software may be copyrighted by their authors and need not follow the licensing terms described here provided that the new terms are clearly indicated on the first page of each file where they apply IN NO EVENT SHALL THE AUTHORS OR DISTRIBUTORS
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