Veritas Dynamic Multi-Pathing (DMP) provides the multi-pathing capability to the native devices on the system. DMP creates DMP metadevices (DMP nodes) to represent all the device e paths to the same physical LUN. How DMP works - VxVM uses the DMP metanodes (DMP nodes) to access disk devices connected to the system. For each disk, DMP maps one node to the set of paths that are connected to the disk. The raw and block devices are created in directories /dev/vx/rdmp and /dev/vx/dmp … [Read more...] about A beginners guide to Veritas Dynamic Multipathing (VxDMP)
Archives for February 2014
How to assign CPU/Memory/MAU resources to Guest LDOMs [OVM for SPARC]
The CPU, Memory and MAU resources can be added/removed dynamically to/from the guest LDOMs. Before adding the resources to guest LDOMs make sure you check the available resources in the primary domain : # ldm ls -o memory # ldm ls -o cpu # ldm ls -o mau Resources and their meanings The various resources and their meanings : AbbreviationNamePurpose VCPUvirtual CPUEach thread of a T series CPU acts as a virtual CPU MAUMathematical arithmetic unitEach core of T series CPU will have a … [Read more...] about How to assign CPU/Memory/MAU resources to Guest LDOMs [OVM for SPARC]
How to add/remove vdisk to/from Guest LDOMS online
Prerequisites In order to add vdisk online to a guest LDOM, the SMF service svc:/platform/sun4v/drd must be online in Guest LDOM : ldom01 # svcs drd STATE STIME FMRI online Feb_12 svc:/platform/sun4v/drd:default 1. Adding ZFS volume primary # zpool list NAME SIZE ALLOC FREE CAP DEDUP HEALTH ALTROOT ldom 86.5G 14.6G 71.9G 16% 1.00x ONLINE - rpool 136G 20.5G 115G 15% 1.00x ONLINE - primary # zfs create -V 5G ldom/disk2 primary # ldm add-vdsdev /dev/zvol/dsk/ldom/disk2 … [Read more...] about How to add/remove vdisk to/from Guest LDOMS online
How to rename a LDOM (OVM for SPARC)
In some rare situations you may get a request to change the name of the LDOM. This can be done in 2 ways. 1. Using live migration (can be done online) 2. By editing XML constraints file (requires downtime) Using live migration feature (online) In this case we migrate the guest LDOM to another machine and then again migrate it to the original machine with the new name. source-machine # ldm migrate oldname destination-machine destination-machine # ldm migrate oldname … [Read more...] about How to rename a LDOM (OVM for SPARC)
How to enable Solaris multipathing (MPxIO or STMS) for EMC Symmetrix LUNs
A beginners guide to Solaris Multipathing Software (MPxIO or STMS) Oracle Solaris Storage Multipathing MPxIO provides multipath access to storage luns by grouping together the physical paths and presenting a single logical path. MPxIO can also be referred as STMS or SCSI_VHCI due to the commands used and logical device paths created. The post describes the step by step procedure to enable MPxIO for EMC Symmetrix LUNs. For Solaris 8/9 Set the configuration parameters in the … [Read more...] about How to enable Solaris multipathing (MPxIO or STMS) for EMC Symmetrix LUNs
A beginners guide to Solaris Multipathing Software (MPxIO or STMS)
Oracle Solaris Storage Multipathing MPxIO provides multipath access to storage luns by grouping together the physical paths and presenting a single logical path. MPxIO can also be referred as STMS or SCSI_VHCI due to the commands used and logical device paths created. Configuration files For Solaris 10 and earlier /kernel/drv/fp.conf Fiber channel port configuration file (For Fiber Channel Devices) /kernel/drv/mpt.conf mpt scsi/SAS HBA controller driver configuration file … [Read more...] about A beginners guide to Solaris Multipathing Software (MPxIO or STMS)
Solaris Volume Manager (SVM) command line reference (Cheat Sheet)
Configuration files /etc/lvm/md.tab 1. The file is empty by default. The file is only used when metainit command is issued by the administrator. It is configured manually. 2. It can be populated by appending the output of # metastat -p. For example #metastat -p >> /etc/lvm/md.tab. 3. It can be used to recreate all the metadevices in one go. Best used in recovery of SVM configurations. For example # metainit -a (to create all metadevices mentioned in md.tab file) # metainit dxx … [Read more...] about Solaris Volume Manager (SVM) command line reference (Cheat Sheet)
The ultimate Solaris jumpstart troubleshooting guide
How to Configure a Solaris 10 Jumpstart server and client [SPARC] Troubleshooting jumpstart issue can be cumbersome. Here is a list of check and tips to get you started on troubleshooting most commonly occurring jumpstart problems. The example Jumpstart setup looks like the one shown in the figure below : Verifying Settings on Jumpstart Client Understanding which interface will be used for jumpstart installation (SPARC) When we do a jumpstart installation, the client sends out RARP … [Read more...] about The ultimate Solaris jumpstart troubleshooting guide
How to create Solaris 8 & 9 Branded Zones in Solaris 10
Branded zones are solaris 8 or solaris 9 containers created in a solaris 10 Global zone. By default any non-global zone shares the global zone kernel and has same characteristics as the global zone kernel. But in case of branded zone, BrandZ framework extends the Solaris Zones infrastructure to include the creation of brands, which in turn can be used to create different operating environments to accommodate solaris 8 or solaris 9 Operating systems as non-global zones. The post describes the … [Read more...] about How to create Solaris 8 & 9 Branded Zones in Solaris 10
How to Configure a Solaris 10 Jumpstart server and client [SPARC]
The ultimate Solaris jumpstart troubleshooting guide Jumpstart makes the life of a system admin easy by automating the installation of Solaris operating system. With jumpstart you can do an unattended solaris installation with unbundled softwares. How jumpstart works 1. When you run "boot net -v - install" command at OK prompt, the client starts looking for the jumpstart server. 2. Jumpstart server responds to the RARP (Reverse Address Resolution Protocol) request by using the rarpd … [Read more...] about How to Configure a Solaris 10 Jumpstart server and client [SPARC]