Veritas Storage Foundation™ and High Availability Solutions ...

Storage Foundation and High Availability Solutions support for Oracle VM Server for SPARCSoftware limitations97Software limitationsThe following section describes some of the limitations of the Oracle VM serverfor SPARC software and how those software limitations affect the functionalityof the Veritas Storage Foundation products.Memory Corruption in the guest domain during SCSI commandsWhen running VxVM and DMP the system panics in the guest domain. Thefollowing error messages display on the console:vxdmp: NOTICE: VxVM vxdmp V-5-3-289 DMP: Memory Overrun!Caller dmpscsi_sys.c(170) Ptr 0x3000528e580 Size 0x100vxdmp: NOTICE: VxVM vxdmp V-5-3-289 DMP: Memory Overrun!Caller dmppgrio.c(824) Ptr 0x3002d7f1a80 Size 0xe8These error messages are due to a kernel memory corruption occurring in theSolaris kernel driver stacks (virtual disk drivers). This issue occurs when issuingUSCSICMD with the sense request enable (USCSI_RQENABLE) on a virtual diskfrom the guest.Symantec has an open escalation with Oracle and an associated Oracle (SUN) bugid for this issue:Oracle (SUN) Escalation number: 1-23915211Oracle (SUN) bug id: 6705190 (ABS: uscsicmd on vdisk can overflow the sensebuffer)This Oracle (SUN) bug has been fixed in Sun patch 139562-02.See “Solaris patch requirements” on page 80.Exporting the raw volume device node failsFollowing messages can be observed in the /var/adm/messages file:vds: [ID 998409 kern.info] vd_setup_vd():/dev/vx/rdsk/testdg/testvol identification failedvds: [ID 790452 kern.info] vd_setup_vd():/dev/vx/rdsk/testdg/testvol can not be exported as a virtual disk(error 5)vds: [ID 556514 kern.info] vds_add_vd(): Failed to add vdisk ID 21vds: [ID 970787 kern.info] vds_add_vd(): No vDisk entry found forvdisk ID 21