I'm not a developer, but I thought I'd throw out this observation. environment: - rhas4 U2 Beta - Linux pecan 2.6.9-16.EL #1 Mon Aug 15 19:58:49 EDT 2005 i686 i686 i386 GNU/Linux - multipath-tools-0.4.5.49. - 2 QLogic PCI to Fibre Channel Host Adapters for QLA2340: Firmware version 3.03.15 IPX, Driver version 8.01.00b5-rh2 - IBM ESS 2105F20 4 paths When I used this command: multipath -v3 The cpu got eaten up by mpath_ctl and remains that way until reboot: top - 21:14:55 up 3:51, 2 users, load average: 4.18, 2.54, 1.06 Tasks: 68 total, 3 running, 65 sleeping, 0 stopped, 0 zombie Cpu(s): 15.9% us, 84.1% sy, 0.0% ni, 0.0% id, 0.0% wa, 0.0% hi, 0.0% si Mem: 1554428k total, 244244k used, 1310184k free, 34268k buffers Swap: 5116620k total, 0k used, 5116620k free, 119464k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 4202 root 15 -10 2324 92 72 R 99.7 0.0 4:34.19 mpath_ctl 4255 root 16 0 3344 928 744 R 0.3 0.1 0:00.05 top ... I was able to repeat this twice, but not a the third time. I may have something misconfigured since this is my first foray into dm. I'll be glad to supply any info of interest. Thanks. Next topic: The number of scsi devices I'm seeing in my sand box is wrong. I have 4 luns with 4 paths. I'm only seeing 14 devices, after one of the reboots, I only had 13. Any clue why? [root@pecan ~]# multipath -v2 -d create: 1IBM_____2105____________50A22206 [size=19 GB][features="0"][hwhandler="0"] \_ round-robin 0 \_ 0:0:0:0 sda 8:0 \_ 0:0:1:0 sde 8:64 \_ 1:0:0:0 sdi 8:128 \_ 1:0:1:0 sdm 8:192 create: 1IBM_____2105____________30A22206 [size=19 GB][features="0"][hwhandler="0"] \_ round-robin 0 \_ 0:0:0:1 sdb 8:16 \_ 1:0:0:1 sdj 8:144 \_ 1:0:1:1 sdn 8:208 create: 1IBM_____2105____________72622206 [size=19 GB][features="0"][hwhandler="0"] \_ round-robin 0 \_ 0:0:0:2 sdc 8:32 \_ 0:0:1:2 sdg 8:96 \_ 1:0:0:2 sdk 8:160 \_ 1:0:1:2 sdo 8:224 create: 1IBM_____2105____________72722206 [size=19 GB][features="0"][hwhandler="0"] \_ round-robin 0 \_ 0:0:0:3 sdd 8:48 \_ 1:0:0:3 sdl 8:176 \_ 1:0:1:3 sdp 8:240 Next topic. I'm a real dm novice user. I have not figured out how to create the disk devices and lvm fs. Is there a doc on how to do this? My guess is that I need to map the wwid in multipath.conf. Is this demonstrated somewhere? Thanks. ============================================================ Ray Stell stellr@xxxxxx (540) 231-4109 Tempus fugit 28^D
