Dev/rdsk/emcpower I/o Error
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disk but I was getting an I/O error root@solaris:~ # metattach d200 /dev/rdsk/emcpower46c metattach: solaris: /dev/dsk/emcpower46c: I/O
Mount I/o Error Solaris 10
error Nothing strange was appearing in the emcpower disk root@solaris:~ # how to check i/o error in solaris powermt display dev=emcpower46 Pseudo name=emcpower46a Symmetrix ID=000287752010 Logical device ID=01A1 state=alive; policy=SymmOpt; priority=0; queued-IOs=0 ============================================================================== ----------- Host ---------- - Stor - -- I/O Path - -- Stats -- ### HW Path I/O Paths Interf. Mode State Q-IOs Errors ============================================================================== 3072 pci@8,600000/SUNW,emlxs@1/fp@0,0 c1t5006048449AFD288d18s0 FA 9aA active alive 0 0 3073 pci@8,600000/SUNW,emlxs@2/fp@0,0 c2t5006048449AFD287d18s0 FA 8aA active alive 0 0 A friend here at work asked if the disk has a label. It didn't have one. selecting emcpower46e [disk formatted] Disk not labeled. Label it now? yes After that I was able to increase the metadevice. root@solaris:~ # metattach d200 /dev/rdsk/emcpower46c d200: component is attached Share this:EmailTwitterGoogleFacebookRedditPrintLike this:Like Loading... Related Posted in: Solaris | Tagged: error, io, metattach, powermt, svm Post navigation ← Older Newer → Search this site Search Author Emerson TakahashiTop Posts & Pages Connecting to HP iLO using the command line Discover HP iLO IP address in Linux Remove virbr0 interface in Linux How to install compiled programs on a Synology NAS HP iLO 2 ClassNotFoundException com.hp.ilo2.remcons.remcons.class Categories AIX ALOM Android ARCserve CA Chrome Countries EMC Enterprises Firefox Games Hardware HMC Hosting HP iLO HP Server Automation HP-UX HPOM Informix Java Linux Mac Mobile Network Office Oracle Database Oracle RAC Perl Personal PowerPath QLogic Remote Loader Review RSC Security Shipping Solaris SteelSeries Synology System Controller Tivoli Data Protector UnixWare Veritas Volume Manager VMware Windows 7 WinSCP X11 Recent Posts UXMONhwmon: severity=major Physical DriveFailed UXMON: SSHD Daemon is not running or not doing it properly, plea
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the use of multipath solutions on Red Hat systems: EMC PowerPath and GNU/Linux dm-multipath. Along those notes, keep in mind that they were based on tests done when pressure was very high to put new systems in production, so lack of time resulted in less complete tests than expected. These tests were done more than a year ago, and so before the release of RHEL4 Update 5 and some of RHBA related to both LVM and dm-multipath technologies. Keep in mind that without purchasing an appropriate EMC license, PowerPath can only be used in failover mode (active-passive mode). Multiple paths accesses are not supported in this case: no round-robin, and no I/O load balancer for example. EMC PowerPath Advantages Not specific to the SAN Host Bus Adapter (HBA). Support for multiple and heterogeneous SAN storage provider. Support for most UNIX and Unix-like platforms. Without a valid license, can only work in degraded mode (failover). Is not sensible to a change in the SCSI LUN renumbering. Adapt accordingly the corresponding multiple sd devices (different paths to a given device) with its multipath definition of the emcpower device. Provide easily the ID of the SAN storage. Drawbacks Not integrated with the operating system (which generally has its own solution). The need to force a RPM re-installation in case of a kernel upgrade on RHEL systems (due to the fact that kernel modules are stored in a path containing the exact major and minor versions of the installed (booted) kernel. Non-automatic update procedure. GNU/Linux device-mapper-multipath Advantages Not specific to the SAN Host Bus Adapter (HBA). Support for multiple and heterogeneous SAN storage provider. Well integrated with the operating system. Automatic update using RHN (you must be a licensed and registered user in this case). No additional license cost. Drawbacks Only available on GNU/Linux systems. Configuration (files and keywords) very tedious and difficult. Without the use of LVM (Logical Volume Management), it has not the ability to follow SCSI LUN renumbering! Even in this case, be sure not to have blacklisted the newly discovered SCSI devices (sd). Last, please find some interesting documentation on the subject below: How do I setup device-mapper multipathing in RHEL4? Setting Up Multipathing for Storage Enterprise Storage Quickstart on RHEL4 10 comments Saturday 9 February 2008 Deleting SCSI Device Paths For A Multipath SAN LUN By Julien Gabel on Saturday 9 February 2008, 12:28 - GNU/Linux EMC MPxIO SAN When releasing a multipath device under