Chapter 5.6.1. Host encountered media errors
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66 SAN Volume Controller: Best Practices and Performance Guidelines You can use the lsvdiskextent CLI command to obtain this information. The lsmdiskextent output in Example 5- 1 shows a list of VDisk IDs that have extents allocated to mdisk0 along with the number of extents. The GUI also has a drop- down option to perform the same function for VDisks and MDisks. Example 5- 1 lsmdiskextent IBM_ 2123: ITSOCL1: admin> svcinfo lsmdiskextent mdisk0 id number_ of_ extents 1 16 9 40 19 20 21 20 IBM 2145: ITSOCL1: admin> 5.5 Mapping physical LBAs to Extents At the time of writing this book, mapping physical LBAs to VDisk extents is not a trivial endeavor, and it is only possible with help from SVC ...
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