Mulitpathing & ZFS
Happy Holiday everyone.
Question (naturally): I'll try to be clear, yet detailed enough!
Does stmsboot or mpathadm (for Solaris 10 U3) play nice with ZFS for good
failover/HA solution.
I'm currently using Sol. 10 6/06 (u2) with some zpools and stmsboot -e,
but my devices don't seem to change when I'm looking at the format
output. See below.
On one of my 15K test domains, I'm seeing my two LUNS via my two Sun
Qlogic FC cards (sg-xpci2fc-qf2), which go to my two ISL'd Cisco 9020 SAN switches (1 FC
per card) and with two SAN Zones for the two ports on my Hitachi
AMS1000.
Each SAN Zone has only one of my two HBAs in them and both
Hitachi HBA ports are in each one of those SAN Zones. Hopefully to
failover.
I've activated stmsboot -e and rebooted, but I still see all the
individual devices per my two controllers and pathes that I saw prior
to the reboot. Is this normal?
So I still see this:
# echo | format
0. c0t0d0 <SUN36G cyl 24620 alt 2 hd 27 sec 107>
/pci@dc,700000/pci@1/scsi@2/sd@0,0
1. c0t1d0 <SUN36G cyl 24620 alt 2 hd 27 sec 107>
/pci@dc,700000/pci@1/scsi@2/sd@1,0
2. c1t50060E80100293E2d0 <HITACHI-DF600F-0000-500.00GB>
/pci@fd,600000/SUNW,qlc@1/fp@0,0/ssd@w50060e80100293e2,0
3. c1t50060E80100293E2d1 <HITACHI-DF600F-0000-250.00GB>
/pci@fd,600000/SUNW,qlc@1/fp@0,0/ssd@w50060e80100293e2,1
4. c1t50060E80100293E6d0 <HITACHI-DF600F-0000-500.00GB>
/pci@fd,600000/SUNW,qlc@1/fp@0,0/ssd@w50060e80100293e6,0
5. c1t50060E80100293E6d1 <HITACHI-DF600F-0000-250.00GB>
/pci@fd,600000/SUNW,qlc@1/fp@0,0/ssd@w50060e80100293e6,1
6. c3t50060E80100293E2d0 <HITACHI-DF600F-0000-500.00GB>
/pci@dd,600000/SUNW,qlc@1/fp@0,0/ssd@w50060e80100293e2,0
7. c3t50060E80100293E2d1 <HITACHI-DF600F-0000-250.00GB>
/pci@dd,600000/SUNW,qlc@1/fp@0,0/ssd@w50060e80100293e2,1
8. c3t50060E80100293E6d0 <HITACHI-DF600F-0000-500.00GB>
/pci@dd,600000/SUNW,qlc@1/fp@0,0/ssd@w50060e80100293e6,0
9. c3t50060E80100293E6d1 <HITACHI-DF600F-0000-250.00GB>
/pci@dd,600000/SUNW,qlc@1/fp@0,0/ssd@w50060e80100293e6,1
Being in a test environment, I pulled one of the
Fibres on my E15K test domain while it was writing some test data to
one of ZFS file systems. BOOM! No fail-over, just a CPU Panic via
ZFS, and a crash, domain rebooted.
Any ideas... or suggestions?
I'm trying to stay away from Hitachi's HDLM fail-over
software, due to even more complexity and not knowing if it too plays nice
with ZFS, manual doesn't really indicate anything like that.
Thanks for your time in this long read!!!!
Chris
