To halt the VNX for file server, type: # /nasmcd/sbin/nas_halt now ARE YOU SURE YOU WANT TO CONTINUE? [ yes or no ] : # yes Sending the halt signal to the Master Control Daemon…: Done . . Halting system… flushing ide devices: hda hdd Power down. It can take as long as 20 minutes […]
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Login using nasadmin and verify the system’s health, type: $ /nas/bin/nas_checkup The checkup command reports back on the state of the Control Station, Data Movers, and storage system. Note: This health check ensures that there are no major errors in the system that would prevent the system from being turned on during the power up
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Login using nasadmin user. Verify that the blades booted successfully. Type: # /nasmcd/sbin/getreason Sample output for systems with 2 blades: [nasadmin@VNXCS01 ~]$ /nasmcd/sbin/getreason 10 – slot_0 primary control station 11 – slot_1 secondary control station 5 – slot_2 contacted 5 – slot_3 contacted
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Solaris Jumpstart overview Only a few articles describe how Jumpstart works under the hood. Here are my findings, all tested on an UltraSPARC based Sun Fire V120, Sun Fire V240 and Sun Fire T2000 servers: Boot the Sun box into OpenBoot Prompt (aka ok prompt) and invoke a network boot with: boot net -v — install rarp
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Red Hat Enterprise Linux 6 (RHEL6) repository configurations. yum looks at /etc/yum.repos.d/*.repo for enabled repository. Create a file IntraNet.repo: [IntraNet] name=Local Network Repository for RHEL6 $releasever – $basearch baseurl=ftp://x.x.x.x/RHEL6-GA-x86_64/ enabled=1 gpgcheck=0 Save and close the file. [IntraNet]: Repository name i.e. The [IntraNet] section must exist for yum to do anything. name=Local Repository for RHEL6 $releasever
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Today one user complained, that he is not able to delete files. Most probably this was due to non printable charter in the file name. # cd /oracle # ls -ltr total 7151632 drwxr-xr-x 2 oracle oinstall 256 May 27 2008 lost+found drwxr-xr-x 3 oracle oinstall 256 May 28 2008 app drwxr-xr-x 2 oracle oinstall
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Question Does Virtual Memory Manager (VMM) work with raw logical updates, and if so, how? If raw logical volumes do not use block I/O buffer cache, does sync update raw logical volumes or does VMM? Answer When an application directly accesses a raw logical volume, the VMM is not involved. The VMM is involved when
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The following steps reduce the size of the /var or /tmp file system in all supported releases of AIX Versions 4 and 5. If either file system on your machine is 8192KB in size or smaller, you probably should not reduce it. The default size of the /var file system (on installation) is 4096KB, which
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Lists SSA disks that are currently not being used by either the OS or other applications. Lists what size the disk is and which enclosure and slot the disk is located in. #!/bin/ksh printf “Please wait, this could take a while… nn” for pdisk in `lsdev -Cc pdisk | awk ‘/SSA/{print $1}’`do hdisk=`ssaxlate -l ${pdisk}`
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for a in `grep “disconnect from” /var/log/secure*|awk ‘{print $9}’|sort|uniq`; do printf `grep $a /var/log/secure*|wc -l`”t””$a”‘n’; done
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