Hi all,

VNX 5300

Linux OEL 5.5

native multipath

vnx01

vnx02

I have a host that has block storage provision from vnx01. This host was zoned to both vnx01 and vnx02. No storagegroup for the host on vnx02. Multipath -ll shows the following errors:

sda: checker msg is "readsector0 checker reports path is down"

sdb: checker msg is "readsector0 checker reports path is down"

sdp: checker msg is "readsector0 checker reports path is down"

sdq: checker msg is "readsector0 checker reports path is down"

These devices are from vnx02. I determined this my multipath -v3 -d output.

This host had crashed and rebooted this morning and prior to the reboot there were errors to the devices listed above. I suspect this caused the reboot. So my question is how can the system see these devices from vnx02 when nothing is provisioned on vnx02 for the host?

May 22 04:33:09 obprd001 kernel: Buffer I/O error on device sda, logical block 0

May 22 04:33:09 obprd001 kernel: end_request: I/O error, dev sda, sector 0

May 22 04:33:09 obprd001 kernel: Buffer I/O error on device sda, logical block 0

May 22 04:33:09 obprd001 kernel: end_request: I/O error, dev sdq, sector 0

May 22 04:33:09 obprd001 kernel: Buffer I/O error on device sdq, logical block 0

May 22 04:33:09 obprd001 kernel: end_request: I/O error, dev sdq, sector 0

May 22 04:33:09 obprd001 kernel: Buffer I/O error on device sdq, logical block 0

May 22 04:33:09 obprd001 kernel: end_request: I/O error, dev sdb, sector 0

May 22 04:33:09 obprd001 kernel: Buffer I/O error on device sdb, logical block 0

May 22 04:33:09 obprd001 kernel: end_request: I/O error, dev sdb, sector 0

May 22 04:33:09 obprd001 kernel: Buffer I/O error on device sdb, logical block 0

May 22 04:33:09 obprd001 kernel: end_request: I/O error, dev sdp, sector 0

May 22 04:33:09 obprd001 kernel: Buffer I/O error on device sdp, logical block 0

Thanks