New disk presentation allows sdb but not sda to be partitioned
Hi we have un-presented a SAN disk and re-presented the same LUN to a new install of Oracle Unbreakable as we wish to get a RAC cluster working. The local disk is a HP Smart Array, and platform a HP blade 480
The /dev/sda cannot be fdisked , although we can see it on the proc/partitions list 104 0 71652960 cciss/c0d0 104 1 104391 cciss/c0d0p1 104 2 71545477 cciss/c0d0p2 104 16 71652960 cciss/c0d1 104 17 71649868 cciss/c0d1p1 253 0 141131776 dm-0 253 1 2031616 dm-1 8 0 209715200 sda 8 16 209715200 sdb 8 17 1959898 sdb1 8 18 9775552 sdb2 8 19 97667167 sdb3 [root@tstesx12 usr]# fdisk /dev/sda Unable to read /dev/sda a dmesg|tail shows... Buffer I/O error on device sda, logical block 0 sd 1:0:0:1: Device not ready: <6>: Current: sense key: Not Ready Add. Sense: Logical unit not ready, initializing command required end_request: I/O error, dev sda, sector 8 Would this be a SAN preseation issue or as we can use /dev/sdb then ignore the anomaly? # uname -r 2.6.18-53.el5 Thanks |
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