Hi I have problem with disk which fail for multipath....
Not able to get multipath for 4 disks ... Is it problem devicemapper problem? or its bug with debain ? Please help me its urgent _________________________________________________________________________ # *uname -a* Linux Z9LNX05 2.6.18-6-s390 #1 SMP Mon Feb 11 09:16:19 UTC 2008 s390 GNU/Linux #* cat /etc/issue* Debian GNU/Linux 4.0 \n \l ______________________________________________________________________________________________________ */etc/multipath *looks fine # Blacklist all devices by default. Remove this to enable multipathing # on the default devices. devnode_blacklist { # devnode "*" devnode "dasda.*" } ## Use user friendly names, instead of using WWIDs as names. defaults { user_friendly_names yes } ## By default, devices with vendor = "IBM" and product = "S/390.*" are ## defaults { udev_dir /dev polling_interval 10 selector "round-robin 0" path_grouping_policy multibus getuid_callout "/sbin/scsi_id -g -u -s /block/%n" prio_callout /bin/true path_checker readsector0 rr_min_io 100 rr_weight priorities # failback immediate no_path_retry fail user_friendly_name yes } ## ## The wwid line in the following blacklist section is shown as an example ## devnode_blacklist { # wwid 26353900f02796769 devnode "^(ram|raw|loop|fd|md|dasd.*|sr|scd|st)[0-9]*" devnode "^hd[a-z]" devnode "^cciss!c[0-9]d[0-9]*" } But when i ran _______________________________________________________________________________________________________ *lsscsi* [0:0:0:0] disk IBM 2107900 .437 /dev/sda [0:0:0:1] disk IBM 2107900 .437 /dev/sdb [0:0:0:2] disk IBM 2107900 .437 /dev/sdc [0:0:0:3] disk IBM 2107900 .437 /dev/sdd __________________________________________________________________________________________________________ * multipath -ll* mpath2 (36005076305ffc3100000000000001003) dm-2 , [size=50G][features=0][hwhandler=0] \_ round-robin 0 [prio=0][active] \_ #:#:#:# - #:# [active][faulty] ----------------------------------------------------------------(Eroor) mpath38 (36005076305ffc3100000000000001112) dm-38 IBM,2107900 [size=50G][features=0][hwhandler=0] \_ round-robin 0 [prio=0][active] \_ 0:0:0:38 sdam 66:96 [active][ready] mpath23 (36005076305ffc3100000000000001018) dm-23 IBM,2107900 [size=50G][features=0][hwhandler=0] \_ round-robin 0 [prio=0][active] \_ 0:0:0:23 sdx 65:112 [active][ready] mpath55 (36005076305ffc3100000000000001123) dm-55 IBM,2107900 [size=50G][features=0][hwhandler=0] \_ round-robin 0 [prio=0][active] \_ 0:0:0:55 sdbd 67:112 [active][ready] mpath40 (36005076305ffc3100000000000001114) dm-40 IBM,2107900 [size=50G][features=0][hwhandler=0] \_ round-robin 0 [prio=0][active] \_ 0:0:0:40 sdao 66:128 [active][ready] mpath87 (36005076305ffc3100000000000001042) dm-87 IBM,2107900 [size=50G][features=0][hwhandler=0] \_ round-robin 0 [prio=0][active] \_ 0:0:0:87 sdcj 69:112 [active][ready] mpath72 (36005076305ffc3100000000000001033) dm-72 IBM,2107900 [size=50G][features=0][hwhandler=0] \_ round-robin 0 [prio=0][active] \_ 0:0:0:72 sdbu 68:128 [active][ready] mpath1 (36005076305ffc3100000000000001002) dm-1 , [size=50G][features=0][hwhandler=0] \_ round-robin 0 [prio=0][active] \_ #:#:#:# - #:# [active][faulty]------------------------------------------------------------------------(Error) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ *# fdisk -l /dev/sda* Disk /dev/sda: 53.6 GB, 53687091200 bytes 64 heads, 32 sectors/track, 51200 cylinders Units = cylinders of 2048 * 512 = 1048576 bytes Disk /dev/sda doesn't contain a valid partition table