Recent Posts

July, 2012

  • 3 July

    Solaris ZONE + Liveupgrade compatibility model –Solaris 10

    Using ZFS as root filesystems on global zone and local zone is huge advantage for OS patching. ZFS is very flexible with Liveupgrade, so that rollback action is very simple. It’s Just reboot. Here we will see what type of zone+zfs configuration will support in Solaris 10 for Liveupgrade. If you are planning to use zones in production, better keep …

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  • 2 July

    Oracle server-Virtualization Technologies

    OS Virtualization is a hot topic in the IT market.All the operating system developers and OEM are keep on introducing new virtualization technologies day by day. Have you ever asked why is it so import in infrastructure management ? Operating system virtualization  very important to reduce the hardware cost and isolates the applications from server. In older days ,if you want to port the website,you need to buy a minimum two …

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  • 2 July

    Solaris 10’s Resource Management:Controlling process using projects

    in older days we use to set the kernel tuneable parameters through /etc/system in Solaris Boxes.But from Solaris 10 on-wards,we set those parameters using resource control mechanism.The rctladm command allows you to make runtime interrogations of and modifications to the resource controls facility, with global scope. The prctl command allows you to make runtime interrogations of and modifications to the resource controls facility, with local scope. Many kernel parameters …

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  • 2 July

    Solaris 10’s Resource Management and Shell Limit(ulimit)

    Solaris 10’s Resource Management One of the best known features in Solaris is Resource management. This mechanism allows controlling resource for each and every process which is big advantage in system administration.System precious resources like CPU & memory also can be controlled by using projects and newtask feature. Resource Management:A resource controls are identified by following prefix1.  zone (Ex:zone.cpu-shares)2.  project (Ex:project.max-shm-memory)3. task …

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  • 1 July

    lucreate failed due to – Zones residing on top level of the dataset.

    Live-upgrade:Oracle Solaris 10 has come with ZFS and live-upgrade features to eliminate the down time for OS patching.But still this feature need lot of maturity in order to use in critical production environment.It has so many bugs and many restricted configuration setup. I would say oracle Solaris is completely moved to next generation OS patching method and its just need …

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June, 2012

  • 21 June

    how to take sun M-series XSCF snapshot

    Oracle SUN M-series has an new extended System Control Facility (XSCF) firmware with powerful console prompt. XSCF has its own processor to monitor the server hardware.Even though the server is down,XSCF will be always available until power supply coming to the server. When you are running XSCF snapshot,it will collect complete physical server information not with specific domains which you …

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  • 15 June

    Veritas cluster Agents (VCS agents)

    VCS agents: VCS agent use to communicate to the HAD (high availability daemon) with all the configuration and attributes.For an example, Mount agent should be able to monitor the filesystem and able to mount/umount the filesystem according to the given commands.  Agents are multi-threaded processes that provide the logic to manage resources. VCS has one agent per resource type. The agent monitors all resources of that …

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  • 15 June

    How to kill zombie process in solaris

    A zombie process or defunct process is a dead process that has completed execution but still it may be in the process table. Defunct processes are child processes that terminated. The process image in the kernel for that process is no more. It no longer exists. Defunct processes do not take up any CPU time, RAM or IO.The reason for still …

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