Greetings. The "Device Not Ready" errors (as shown on the logs you've mentioned) are commonly originated from issues outside the Linux guest. LUN mapping, SAN Zoning and Host Type definitions come to my mind, in these cases. Look for the SAN/Storage side.
HTH, Pedro Principeza From: "Ayers, Jennifer D" <[email protected]> To: [email protected] Date: 29/08/2011 11:33 Subject: SLES10 SP4 Linux and zFCP disk Sent by: Linux on 390 Port <[email protected]> We are attempting (unsuccessfully) to connect to a SAN disk via zFCP. Port type is "NPort (fabric via point-to-point)". The operating system in our test instance is SUSE 10 SP4. We cannot partition or format the disk. These are some the errors we see when our instance is rebooted: Activating zfcp host 0.0.5000 Configuring device 0.0.5000 scsi0 : zfcp zfcp: The adapter 0.0.5000 reported the following characteristics: WWNN 0x5005976400c36e16, WWPN 0xc05976eba2000000, S_ID 0x000b1701, adapter version 0x5, LIC version 0x302 zfcp: Switched fabric fibrechannel network detected at adapter 0.0.5000. Activating zfcp disk 0.0.5000:0x5006916030603a65:0x0000000000000000 No configuration file for adapter 0.0.5000 Configuring FCP disk 5006916030603a65:0000000000000000 Vendor: DGC Model: RAID 5 Rev: 0226 Type: Direct-Access ANSI SCSI revision: 04 SCSI device sda: 41943040 512-byte hdwr sectors (21475 MB) sda: test WP failed, assume Write Enabled sda: asking for cache data failed sda: assuming drive cache: write through SCSI device sda: 41943040 512-byte hdwr sectors (21475 MB) sda: test WP failed, assume Write Enabled sda: asking for cache data failed sda: assuming drive cache: write through sda:<6>sd 0:0:0:0: Device not ready: <6>: Current: sense key: Not Ready Additional sense: Logical unit not ready, manual intervention required end_request: I/O error, dev sda, sector 0 Buffer I/O error on device sda, logical block 0 sd 0:0:0:0: Device not ready: <6>: Current: sense key: Not Ready Additional sense: Logical unit not ready, manual intervention required end_request: I/O error, dev sda, sector 0 Buffer I/O error on device sda, logical block 0 sd 0:0:0:0: Device not ready: <6>: Current: sense key: Not Ready Additional sense: Logical unit not ready, manual intervention required end_request: I/O error, dev sda, sector 0 Buffer I/O error on device sda, logical block 0 unable to read partition table sd 0:0:0:0: Attached scsi disk sda sd 0:0:0:0: Device not ready: <6>: Current: sense key: Not Ready Additional sense: Logical unit not ready, manual intervention required end_request: I/O error, dev sda, sector 41942912 Buffer I/O error on device sda, logical block 5242864 sd 0:0:0:0: Attached scsi generic sg0 type 0 sd 0:0:0:0: Device not ready: <6>: Current: sense key: Not Ready Buffer I/O error on device sda, logical block 0 sd 0:0:0:0: Device not ready: <6>: Current: sense key: Not Ready Additional sense: Logical unit not ready, manual intervention required end_request: I/O error, dev sda, sector 41943032 sd 0:0:0:0: Device not ready: <6>: Current: sense key: Not Ready Additional sense: Logical unit not ready, manual intervention required end_request: I/O error, dev sda, sector 41943032 sd 0:0:0:0: Device not ready: <6>: Current: sense key: Not Ready Additional sense: Logical unit not ready, manual intervention required end_request: I/O error, dev sda, sector 41943032 sd 0:0:0:0: Device not ready: <6>: Current: sense key: Not Ready Additional sense: Logical unit not ready, manual intervention required end_request: I/O error, dev sda, sector 41943032 sd 0:0:0:0: Device not ready: <6>: Current: sense key: Not Ready I had to manually add a LUN 0 in order to see anything at all. Also, one day the disk appears as a /dev/sda and then another it may appear as /dev/sg0, or worse -- /dev/.tmp. Configuration and setup of zFCP is new to us. Any light you can shed as to why we are encountering these errors would be appreciated. Jennifer Ayers State of West Virginia Office of Technology 304-957-8294 ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For more information on Linux on System z, visit http://wiki.linuxvm.org/ ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For more information on Linux on System z, visit http://wiki.linuxvm.org/
