multipath could not detect the storage disk
 

I am setting multipathing in vmware workstation & added additional storage disk as storage array, I had configured multipathing in rhel5 but unable to create multipath & getting error as,

[root@server ~]# multipath -v2
/sbin/scsi_id exitted with 1
error calling out /sbin/scsi_id -g -u -s /block/sdb
/sbin/scsi_id exitted with 1
error calling out /sbin/scsi_id -g -u -s /block/sdb

Also checked the logs as,
May 30 22:15:32 server multipathd: cannot open /sbin/gnbd_import : No such file or directory
May 30 22:15:32 server multipathd: [copy.c] cannot open /sbin/dasd_id
May 30 22:15:32 server multipathd: cannot copy /sbin/dasd_id in ramfs : No such file or directory
May 30 22:15:32 server multipathd: [copy.c] cannot open /sbin/gnbd_import
May 30 22:15:32 server multipathd: cannot copy /sbin/gnbd_import in ramfs : No such file or directory
May 30 22:15:32 server multipathd: /sbin/scsi_id exitted with 1
May 30 22:15:32 server multipathd: error calling out /sbin/scsi_id -g -u -s /block/sdb
May 30 22:15:32 server multipathd: /sbin/scsi_id exitted with 1
May 30 22:15:32 server multipathd: error calling out /sbin/scsi_id -g -u -s /block/sdb
May 30 22:15:32 server multipathd: path checkers start up

I am unable to detect the problem ?

Any solution will be appreciated.

it seems like you have mis-configured something into multipath config file, see the output of scsi_id.

scsi_id is the command which is used to find the SCSI-ID from scsi disk drive and argument which is supplied to is "/block/sdb" which is never exists on rhel5.

all the device's are stored into "/dev" directory.


if you check the multipath.conf file there should be line where you have mentioned this

it is deprecated or will not work on, not even on redhat but many more. so you need to change it something like this.

I had made the changes in the multipath.conf files as,

devices {
device {
vendor "INTEL "
product "VMware Virtual "
path_grouping_policy multibus
getuid_callout "scsi_id -g -u /dev/sdb"
}
}

but still getting the same error as,

[root@server ~]# multipath -v2
/sbin/scsi_id exitted with 1
error calling out /sbin/scsi_id -g -u -s /block/sdb
/sbin/scsi_id exitted with 1
error calling out /sbin/scsi_id -g -u -s /block/sdb

restarted multipath services ?? or a rebooted? modules loaded of multipath ??

Its showing the same error as I had already loaded the multipath module

Before going further, can i know whether we can setup multipaths in vmware without storage device or without physical connections ?

can you post fdisk -l output and scsi_id output to both block device, and also just try once to use this too


it seems it may be it is calling sysfs filesystem to detect with them
also what storage array are you using here ??

did you tried to configure it with mpathconf, and make sure about the path of "scsi_id"