How to replace a Failed disk under VxVM How to replace failed root disk under Solaris Volume Manager (SVM) Let us discuss 3 different cases for a disk failure under ZFS. 1. The drive went offline and came online. 2. Drive actually failed. New drive in place with same target number. 3. Drive actually failed. New drive in place with different target number. Drive went Offline and came online There might be a case when the drive goes offline and comes online and there is no actual hardware … [Read more...] about How to replace a disk under ZFS in Solaris
Archives for December 2013
Solaris 10 boot process : x86/x64
Solaris 10 boot process : SPARC In the last post we saw the boot process in solaris 10 on SPARC platform. The boot process on x86/x64 hardware is bit different than the SPARC hardware. The x86/x64 hardware also involves the 5 step boot process, same as the SPARC hardware. Refer the flow diagram below. Boot PROM phase 1. The BIOS (Basic Input Output System) ROM runs the power on self test (POST) to test the hardware. 2. BIOS tries to boot from the device mentioned in the boot sequence. … [Read more...] about Solaris 10 boot process : x86/x64
Solaris 10 boot process : SPARC
Solaris 10 boot process : SPARC Solaris 10 boot process : x86/x64 The boot process for SPARC platform involves 5 phases as shown in the diagram below. There is a slight difference in booting process of a SPARC based and x86/x64 based solaris operating system. Boot PROM phase 1. The boot PROM runs the power on self test (POST) to test the hardware. 2. The boot PROM displays the banner with below information - Model type - processor type - Memory - Ethernet address and host … [Read more...] about Solaris 10 boot process : SPARC
17 Examples of using Solaris boot command
The solaris boot command when used with various optional parameters will change the booting behavior. Syntax The common syntax of boot command is solaris SPARC system is : ok> boot [device-specifier] [arguments] The Common Boot [device-specifier]s are : 1. Disk 2. cdrom 3. net (network boot image) 4. url (jumpstart) Example 1 : Normal Boot The boot command without any arguments will boot the system into multi-user mode by default. ok> boot Example 2 : The -a option … [Read more...] about 17 Examples of using Solaris boot command
Troubleshooting Solaris IPMP
How to configure Solaris 10 Probe based IPMP How to configure Solaris 10 Link Based IPMP Solaris IP multipathing provides the high availability and load balancing capability to the networking stack. It makes sure to avoid any single point of failure on network side. We may face issues while configuring and even after configuring IPMP. Below are some tips and tricks to troubleshoot issues in solaris IPMP configuration. Testing IPMP failover We can check the failure and repair of an … [Read more...] about Troubleshooting Solaris IPMP
Solaris Performance troubleshooting : Disk (I/O) performance issues
An I/O performance bottleneck can be due to a disk or even due to a HBA or a HBA driver. The command iostat (Input output statistics) help us to get started with analyzing a disk I/O bottleneck issue. A standard iostat output would look like : # iostat -xn 1 5 extended device statistics r/s w/s kr/s kw/s wait actv wsvc_t asvc_t %w %b device 293.1 0.0 37510.5 0.0 0.0 31.7 0.0 108.3 1 100 c0t0d0 294.0 0.0 37632.9 0.0 0.0 31.9 0.0 108.6 0 100 c0t0d0 293.0 … [Read more...] about Solaris Performance troubleshooting : Disk (I/O) performance issues