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Old 05-31-2012, 01:25 AM   #1
smilemukul
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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.
 
Old 05-31-2012, 02:04 AM   #2
em31amit
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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

Code:
/sbin/scsi_id -g -u -s /block/sdb
it is deprecated or will not work on, not even on redhat but many more. so you need to change it something like this.

Code:
scsi_id -g -u /dev/sdb

Last edited by em31amit; 05-31-2012 at 02:08 AM.
 
Old 05-31-2012, 02:46 AM   #3
smilemukul
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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
 
Old 05-31-2012, 03:02 AM   #4
em31amit
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restarted multipath services ?? or a rebooted? modules loaded of multipath ??
 
Old 05-31-2012, 05:00 AM   #5
smilemukul
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Its showing the same error as I had already loaded the multipath module
 
Old 05-31-2012, 07:17 AM   #6
smilemukul
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Before going further, can i know whether we can setup multipaths in vmware without storage device or without physical connections ?
 
Old 05-31-2012, 08:31 AM   #7
em31amit
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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
Code:
/sbin/scsi_id -g -u -s /block/%n
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"
 
  


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