Lucent Technologies 585-210-940 manual Detach the submirrors, Metadetach metamirror submirror

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Maintaining Mirrored Systems

CentreVu CMS Release 3 Version 8 Disk-Mirrored Systems

Replacing a faulty disk

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Step 3: Detach the submirrors

To detach a submirror means to put it off line so you can access its constituent disk drives. You detach a submirror with a metadetach command. The command is in the format:

metadetach <metamirror> <submirror>

where <metamirror> is the mirror and <submirror> is the submirror to be detached.

To continue our example, since c0t2d0 is part of d20, which is a submirror of d21, the detach command would be as follows:

#metadetach d21 d20

d21: submirror d20 is detached

If the faulty disk is a boot disk, a metastat command also shows the disk as part of the d11 or d12 submirror. Be sure to detach both the submirrors of which it is a member. For example:

#metadetach d13 d12

d13: submirror d12 is detached

#metadetach d21 d20

d21: submirror d20 is detached

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Contents CentreVu Call Management System Comments Table of Contents CentreVu CMS Release 3 Version 8 Disk-Mirrored Systems CentreVu CMS Release 3 Version 8 Disk-Mirrored Systems Iii IndexCentreVu CMS Release 3 Version 8 Disk-Mirrored Systems Backed up just as often as unmirrored systems Disk mirroring definedMetadevices Concatenated State databases MirrorsSolstice DiskSuite D21 D20 How CMS implements disk mirroringD19 D13 D12 D11D15 D17 D16Mirror d13 Mirror d21 Mirror d17 Mirror layoutsRoot filesystem Cms filesystem Submirror DisksEnterprise Additional references Required softwareHow CMS implements disk mirroring Disk drive slots How to upgrade an Enterprise platform to disk mirroringIdentify mirror devices Increasing system capacitySubmirror d15 Submirror d16 Device Names# ls -l /dev/dsk/c1t6d0s0 SystemDo this step only if you have an Enterprise 3500 system How to upgrade an Enterprise platform to disk mirroring # ls -l /dev/dsk/c2t6d0s0 Ok boot -rDo this step only if you have an Enterprise 3000 system Enter format partitionDisk Part 3500Flag Starting# export PATH=$PATH/usr/opt/SUNWmd/sbin/olds Enter partition q# metadb -a -c3 -f /dev/rdsk/device # metadbDx y 1 device # metainit -f d11 D11 Concat/stripe is set up Set up the mirrors for the root file system# metainit -f d13 D13 Concat/stripe is set up # metainit -f d12 D12 Concat/stripe is set up# /usr/sbin/shutdown -i6 -g0 -y Password password# metaroot d13 # metainit -f d15 D15 Concat/stripe is set up Set up the mirrors for the swap space# metainit d17 D17 Concat/stripe is set up # metainit d16 D16 Concat/stripe is set up# swap -a /dev/md/dsk/d17 Set up the /cms mirror Disk Space Verification Verify disk space# ls -l /dev/rdsk/newbootdev Create an alternate boot deviceOk boot bootdevice2 Ok nvalias bootdevice2 device# /usr/sbin/shutdown -y -i0 -g0 Sbus@3,0/SUNW,fas@3,8800000/sd@2,0Install the hardware Factory installation procedures for disk mirroring3500 Disk Part Install the application software# stty erase Ctrl-H # ksh -o Check the disk.type file# olds -mirrored -mkfiles Ok boot -r Hostname console login root Password password Run the setup scripts14309888 14171072 1420577614376992 14446400 14550512Disk Space Verification Install the CMS software Enter the following command ok devalias # chmod +x /olds/chkDisks Factory installation procedures for disk mirroring Ok setenv boot-device disk # eeprom boot-device=disk Using the alternate boot deviceMaintaining the chkDisks crontab Canceling chkDisksActivating chkDisks Verifying chkDisks # crontab -lRun the backup Doing a Cmsadm backup on a mirrored systemPrint the vfstab file # lp /etc/vfstabLabel and store the tapes # cpio -icmudv -C 10240 -I device Restoring from a Cmsadm BackupRestoring from a Cmsadm Backup # umount /cms Repairing or rebuilding the /cms file systemRepairing /cms If you did not alter the vfstab file, do the following Rebuilding /cmsIf you altered the vfstab file earlier , do the following # metainit d21 mirror is set up # metainit d19 D19 Concat/Stripe is set up# metadetach d21 d20 D21 submirror d20 is detached # metaclear d20 D20 Concat/Stripe is cleared14724032 14793440 # newfs Dev/md/rdsk/d2114585216 14654624 Power off the system Restoring a mirrored system from a Cmsadm backupSelect Language Ok boot cdromTask Action Result Continue Identify the systemConfirm Information Click Continue255.255.255.0 is Set the Name Service optionsSet the date and time Installation InitialGeographic Region RegionServices? screen is Installation screen isAllocate Client Select LanguagesSelect the hard disks Slice Name GB DiskClick Continue Mount Remote File Click Begin Installation Reboot/No RebootClick Reboot Complete the OS installation Reestablish the disk mirrors # /olds/olds -cleanup# olds -mirrored -checkdisk Success, checking md.tab.new # PATH=$PATH/usr/opt/SUNWmd/sbin/olds # export Path# olds mirrored -mkfiles Success, creating md.tab.new Hostname login root Password root password Restoring specific files from a Cmsadm backup # /usr/opt/SUNWmd/sbin/metastat Adding new disks to a standard mirrored system# olds -mirrored -mkfiles c0t10d0 c0t11d0 # olds -mirrored -setup newdisk1 newdisk2 # df -k /cms Adding new disks to a nonstandard mirrored system# metattach d19 c0t10d0s1 # metattach d20 c0t11d0s1 # metattach d19 newdisk1 # metattach d20 newdisk2# metastat # growfs -M /cms /dev/md/rdsk/d21# ls -l /dev/dsk/c Lrwxrwxrwx 1 root Root Replacing a faulty diskIdentify the faulty disk Size 14960160 blocks Stripe Device Identify the submirrorsDbase State Hot Spare C0t2d0s1 Okay Stripe Device Dbase State Hot Spare C0t4d0s3 OkayMetadetach metamirror submirror Detach the submirrorsReplace the faulty disk drive Remove state database replicas boot disks onlyRecreate the state database replicas You may delay this step until a more convenient time Reboot the system boot disks only# metainit d20 # metattach d21 d20State Database Replicas Setting up replicas Replacing replicas# metadb -d -f /dev/dsk/c0t0d0s1 # metadb -d -c4 -f /dev/dsk/c0t0d0s1FC-AL E Partitioning disks with the format commandEnter # format Enter partition q Root Metadevice Device Names How to tell whether your mirrored system is standardValid vfstab files Examples of valid system filesValid vfstab file for a non mirrored R3V8 CMS system Valid vstab file for an R3V8 CMS system with mirrored disksValid md.tab file for a 4 disk mirrored R3V8 CMS system Valid md.tab filesValid md.tab file for a 3 disk non mirrored R3V8 CMS system Enter mount /cms Remounts /cms Excessively long resyncUnmount /cms umount /cms System fails to recognize all disk drives If you receive a This command may hang the systemEnter setenv auto-boot? false Toshiba XMS5701TASUN12XCD099704/09/97 Ok setenv auto-boot? trueOk boot -r Console login root Password C0t0d0s0 Okay Fixing needs maintenance messagesOk setenv boot-device bootdevice2 Boot problemsPrimary boot device is not available Touch /etc/notrouter Excessive reboot timeFile Name Description Log files# ls /olds/chkDisks # /olds/chkDisksError Messages Explanation Response Error messagesMessage Explanation Response # metareplace -e d13 c0t0d0s0Disk diskname already setup, exiting Device devicename cannot be setup or does Not existDevice devicename will not be used Message ExplanationMessage Response Command not found No disks found! Internal errorMetadb hostname cxtyd0sz has a Metadevice database replica Metadetach systemname d21 resync ProgressMessage Error Messages Response File filename could not be restored DiskSuite Software must be installed To run this scriptDisk is not recognized by cms /cms filesystem needs to be mountedTouch /cms/db/unixstart cannot create Enter reset-allUnbalanced configurations not supported Usage olds -mirrored -checkdisks Configuration, configure manuallyYou must be root in order to run this command Index SymbolsNeeds maintenance messages How Are We Doing?

585-210-940 specifications

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