Manuel d'utilisation / d'entretien du produit 3.2 du fabricant Sun Microsystems
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iii Contents Preface v 1. Point-in-T ime Copy Software T roubleshooting T ips 1 Troubleshooting Checklist 1 Checking Log Files 2 Improving Performance 2 Safeguarding the VTOC Information 3 2.
iv Sun StorEdge Availability Suite 3.2 Software Troubleshooting Guide • December 2003 Correcting Common User Errors 13 Enabled Software on Only One Host 13 V olumes Ar e Inaccessible 13 W rong V olume Set Name Specif ied 14 Accommodating Memory Requirements 16 3.
v Pr eface Sun StorEdge A vailability Suite 3.2 Software T r oubleshooting Guide helps users solve common problems that might arise when using the Sun StorEdge™ A vailability Suite 3.
vi Sun StorEdge Availability Suite 3.2 Software Troubleshooting Guide • December 2003 How This Book Is Or ganized This book includes the following chapters: Chapter 1 helps to solve problems associated with the point-in-time copy software. Chapter 2 helps to solve problems associated with the remote mirr or software.
Preface vii Shell Pr ompts T ypographic Conventions Shell Prompt C shell machine-name % C shell superuser machine-name # Bourne shell and Korn shell $ Bourne shell and Korn shell superuser # T ypeface 1 1 The settings on your browser might differ from these settings.
viii Sun StorEdge Availability Suite 3.2 Software Troubleshooting Guide • December 2003 Related Documentation Application Title Part Number Man pages sndradm iiadm dsstat kstat svadm N/A Latest release information Sun StorEdge A vailability Suite 3.
Preface ix Accessing Sun Documentation Y ou can view , print, or purchase a broad selection of Sun documentation, including localized versions, at: http://www.sun.com/documentation Contacting Sun T echnical Support If you have technical questions about this product that are not answered in this document, go to: http://www.
x Sun StorEdge Availability Suite 3.2 Software Troubleshooting Guide • December 2003.
1 CHAPTER 1 Point-in-T ime Copy Softwar e T roubleshooting T ips This chapter describes how to avoid or troubleshoot problems that might occur when using the point-in-time copy software.
2 Sun StorEdge Availability Suite 3.2 Software Troubleshooting Guide • December 2003 Checking Log Files Y ou can check the status of the point-in-time copy software by examining two system log files: ■ /var/opt/SUNWesm/ds.log The /var/opt/SUNWesm/ds.
Chapter 1 P oint-in-Time Copy Software T roubleshooting Tips 3 Safeguar ding the VTOC Information Caution – When creating shadow volume sets, do not cr eate shadow or bitmap volumes using partitions that include cylinder 0.
4 Sun StorEdge Availability Suite 3.2 Software Troubleshooting Guide • December 2003.
5 CHAPTER 2 Remote Mirr or Software T roubleshooting T ips This section describes how to avoid or troubleshoot any pr oblems might occur when using the remote mirr or software.
6 Sun StorEdge Availability Suite 3.2 Software Troubleshooting Guide • December 2003 T roubleshooting Checklist This table shows the troubleshooting checklist and related sections. T roubleshooting Log Files and Services The remote mirr or software is client-server software that is bidir ectional.
Chapter 2 Remote Mirror Software T roub leshooting Tips 7 Checking Log Files Check the following files to tr oubleshoot problems: ■ /var/opt/SUNWesm/ds.
8 Sun StorEdge Availability Suite 3.2 Software Troubleshooting Guide • December 2003 Checking the /etc/nsswitch.conf File If entries in the /etc/nsswitch.conf are not conf igured corr ectly , you might encounter these problems: ■ If the hosts: entry is incorrect, volume sets not r esume after a reboot.
Chapter 2 Remote Mirror Software T roub leshooting Tips 9 where: ■ -T tcp specifies the transport that the service uses. ■ hostname is the name of the machine where the service is running. If the service is not running, this message is displayed: If you see this message, it is possible that the /etc/nsswitch.
10 Sun StorEdge Availability Suite 3.2 Software Troubleshooting Guide • December 2003 ■ The /etc/name_to_major file is missing an entry for the /dev/rdc pseudo-link. This example shows a valid entry (the number following rdc can be any number): ■ The /usr/kernel/drv/rdc.
Chapter 2 Remote Mirror Software T roub leshooting Tips 11 T esting with ifconfig Use the ifconfig command to make sure that the network interface is configur ed and running correctly .
12 Sun StorEdge Availability Suite 3.2 Software Troubleshooting Guide • December 2003 In the first example, the command is issued fr om the primary host nws822 to the secondary host nws350 . The network interface is hme0 and the port used by the rdc service is reported.
Chapter 2 Remote Mirror Software T roub leshooting Tips 13 Corr ecting Common User Errors This section describes user errors encountered often when using the softwar e.
14 Sun StorEdge Availability Suite 3.2 Software Troubleshooting Guide • December 2003 This example shows the newfs -N command completing successfully: This example shows a typical error caused when .
Chapter 2 Remote Mirror Software T roub leshooting Tips 15 For example, this command updates the volume on the secondary host calamari from the primary host volume: T o correctly display the volume set name, use the sndradm -p command on the primary host.
16 Sun StorEdge Availability Suite 3.2 Software Troubleshooting Guide • December 2003 ▼ T o Find the V olume Set Name 1. If you are unsure of the volume set name, type the following command from t.
Chapter 2 Remote Mirror Software T roub leshooting Tips 17 The order of write operations must be maintained within a group. Ther efore, these out of order r equests must be stored in memory on the secondary host until the missing request comes in and completes.
18 Sun StorEdge Availability Suite 3.2 Software Troubleshooting Guide • December 2003.
19 CHAPTER 3 Err or Messages Error messages during the installation pr ocess are described in the Sun StorEdge A vailability Suite 3.2 Software Installation Guide. Solaris err or messages related to the Sun StorEdge A vailability Suite software are described in .
20 Sun StorEdge Availability Suite 3.2 Software Troubleshooting Guide • December 2003 Abort failed PITC iiadm could not abort a copy or update operation on a set. Possible errors: EFAULT : The kernel module tried to read out-of- bounds. File a bug against iiadm.
Chapter 3 Error Messages 21 Bitmap reconfig failed %s:%s Kernel A request to reconf igure the bitmap on the local host has failed. This can happen for two reasons: • The old bitmap cannot be read fr om to obtain needed information. • The new bitmap cannot be reserved because the volume is not accessible or is already in use.
22 Sun StorEdge Availability Suite 3.2 Software Troubleshooting Guide • December 2003 cannot find SNDR set <shost>:<svol> in config RM Remote mirror set cannot be found in the conf iguration database. The set is not configur ed. Check the entry for errors.
Chapter 3 Error Messages 23 Cannot enable %s:%s ==> %s:%s, secondary in use in another set Kernel A set being enabled or resumed has a secondary volume that is already in use as a secondary volume for another remote mirr or set.
24 Sun StorEdge Availability Suite 3.2 Software Troubleshooting Guide • December 2003 Copy failed PITC A copy or update operation could not be initiated. Possible errors: EFAULT : The kernel module tried to read out-of- bounds. File a bug against iiadm.
Chapter 3 Error Messages 25 Create overflow failed PITC An overflow volume couldn’t be initialized. Possible errors: EFAULT : The kernel module tried to read out-of- bounds. File a bug against iiadm. ENOMEM : The kernel module ran out of memory . DSW_EEMPTY : No overflow volume was specif ied.
26 Sun StorEdge Availability Suite 3.2 Software Troubleshooting Guide • December 2003 Disable pending on diskq %s, try again later Kernel A request to disable the disk queue is already in progr ess. V erify that the previous request has completed successfully .
Chapter 3 Error Messages 27 disk queue volume <vol> must not match any primary SNDR volume or bitmap RM The disk queue volume specified for the reconf iguration operation is already in use by the remote mirr or software as a data volume or bitmap volume.
28 Sun StorEdge Availability Suite 3.2 Software Troubleshooting Guide • December 2003 Enable failed PITC Could not enable volume. Possible errors: EFAULT : The kernel module tried to read out-of- bounds. File a bug against iiadm. ENOMEM : The kernel module ran out of memory .
Chapter 3 Error Messages 29 Failed to detach overflow volume PITC iiadm had a problem detaching the overflow volume from a set. Possible err ors: EFAULT : The kernel module tried to read out-of- bounds. File a bug against iiadm. ENOMEM : The kernel module ran out of memory .
30 Sun StorEdge Availability Suite 3.2 Software Troubleshooting Guide • December 2003 hostname tag exceeds CFG_MAX_BUF PITC Because CFG_MAX_BUF is 1k, this message is not expected to be reported. Import failed PITC Could not import shadow volume. Possible errors: EFAULT : The kernel module tried to read out-of- bounds.
Chapter 3 Error Messages 31 Join failed PITC Could not join shadow volume back to the set. Possible errors: EFAULT : The kernel module tried to read out-of- bounds. File a bug against iiadm. ENOMEM : The kernel module ran out of memory . DSW_EEMPTY : A volume was missing on the command line.
32 Sun StorEdge Availability Suite 3.2 Software Troubleshooting Guide • December 2003 Memory allocation failure PITC iiadm ran out of memory . Must be super-user to execute Kernel The user issued a remote mirror command but does not have superuser privileges.
Chapter 3 Error Messages 33 Overflow list access failure PITC iiadm could not get a list of overflow volumes fr om the kernel. Possible errors: EF AUL T : The kernel module tried to read out-of- bound. File a bug against iiadm. ENOMEM: The kernel module ran out of memory .
34 Sun StorEdge Availability Suite 3.2 Software Troubleshooting Guide • December 2003 Reverse sync needed, cannot sync %s:%s ==> %s:%s Kernel The user requested a forward sync operation for a remote mirr or set which needs a reverse sync.
Chapter 3 Error Messages 35 Shadow group %s is suspended PITC The user attempted to perform a copy or update operation on a group with one or more suspended sets. The %s parameter identifies the f irst set found in the group that is suspended. Shadow group suspended PITC The user attempted to perform a copy or update operation on a suspended set.
36 Sun StorEdge Availability Suite 3.2 Software Troubleshooting Guide • December 2003 SNDR set does not have a disk queue RM Set does not have a disk queue attached when attempting either a queue r emove operation or a queue replace operation. SNDR: The volume ’<vol2>’ has been configured previously as ’<vol1>’.
Chapter 3 Error Messages 37 The volume %s is already in use Kernel The data volume in the remote mirror set is alr eady in use as a bitmap volume or a disk queue volume. Use a differ ent data volume. Too many volumes given for update PITC iiadm ran out of memory .
38 Sun StorEdge Availability Suite 3.2 Software Troubleshooting Guide • December 2003 unable to determine hostname: <host> RM Could not determine the host name of the system.
Chapter 3 Error Messages 39 unable to obtain unique set id for <shost>:<svol> RM Lookup of the set ID in the configuration database for this set has failed. Unable to open bitmap file <vol> RM The volume specified for the bitmap could not be opened.
40 Sun StorEdge Availability Suite 3.2 Software Troubleshooting Guide • December 2003 Update failed PITC One or more volumes in a group copy or update command failed. Possible errors: EFAULT : The kernel module tried to read out-of- bounds. File a bug against iiadm.
Chapter 3 Error Messages 41 Volumes are not in same disk group PITC iiadm detected that the master , shadow , and bitmap volumes are not all in the same cluster device group, as requir ed by the point-in-time copy software.
42 Sun StorEdge Availability Suite 3.2 Software Troubleshooting Guide • December 2003 Related Error Messages The Solaris configuration administration utility , cfgadm, reports an err or when it is used on systems where the Sun StorEdge A vailability Suite software is installed.
Un point important après l'achat de l'appareil (ou même avant l'achat) est de lire le manuel d'utilisation. Nous devons le faire pour quelques raisons simples:
Si vous n'avez pas encore acheté Sun Microsystems 3.2 c'est un bon moment pour vous familiariser avec les données de base sur le produit. Consulter d'abord les pages initiales du manuel d'utilisation, que vous trouverez ci-dessus. Vous devriez y trouver les données techniques les plus importants du Sun Microsystems 3.2 - de cette manière, vous pouvez vérifier si l'équipement répond à vos besoins. Explorant les pages suivantes du manuel d'utilisation Sun Microsystems 3.2, vous apprendrez toutes les caractéristiques du produit et des informations sur son fonctionnement. Les informations sur le Sun Microsystems 3.2 va certainement vous aider à prendre une décision concernant l'achat.
Dans une situation où vous avez déjà le Sun Microsystems 3.2, mais vous avez pas encore lu le manuel d'utilisation, vous devez le faire pour les raisons décrites ci-dessus,. Vous saurez alors si vous avez correctement utilisé les fonctions disponibles, et si vous avez commis des erreurs qui peuvent réduire la durée de vie du Sun Microsystems 3.2.
Cependant, l'un des rôles les plus importants pour l'utilisateur joués par les manuels d'utilisateur est d'aider à résoudre les problèmes concernant le Sun Microsystems 3.2. Presque toujours, vous y trouverez Troubleshooting, soit les pannes et les défaillances les plus fréquentes de l'apparei Sun Microsystems 3.2 ainsi que les instructions sur la façon de les résoudre. Même si vous ne parvenez pas à résoudre le problème, le manuel d‘utilisation va vous montrer le chemin d'une nouvelle procédure – le contact avec le centre de service à la clientèle ou le service le plus proche.
