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Configure Persistent device for LUN/Disk in RHEL 4.5

Md. Minhaz Khan
Super Advisor

Configure Persistent device for LUN/Disk in RHEL 4.5

Dear All,

When i run scsi_id command i found it returns
"Non block or class device"
# scsi_id -g -s /dev/sdm
Non block or class device '/sys/dev/sdm'

For details please see the attachment. This LINUX machine running in ESX VM machine. Please help me how to configure Persistent device for LUN/Disk in RHEL 4.5.

I have already read below links but i am failed.

http://www.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5/html/Virtualization_Guide/sect-Virtualization-Virtualized_block_devices-Configuring_persistent_storage_in_Red_Hat_Enterprise_Linux_5.html

http://www.linuxtopia.org/online_books/rhel5/rhel5_xen_virtualization/rhel5_sect-Virtualization-Virtualized_block_devices-Configuring_persistent_storage_in_Red_Hat_Enterprise_Linux_5.html

Thanks
Minhaz

6 REPLIES
Michael Leu
Honored Contributor

Re: Configure Persistent device for LUN/Disk in RHEL 4.5

I am not sure about RHEL. On SLES it used to be
/sbin/scsi_id -g -p 0x80 -s /block/sda
and that has changed to
/lib/udev/scsi_id --whitelisted --page=0x80 --device=/dev/sda
since SLES 11.
Md. Minhaz Khan
Super Advisor

Re: Configure Persistent device for LUN/Disk in RHEL 4.5


Any Help ????


Thanks
Minhaz
Matti_Kurkela
Honored Contributor

Re: Configure Persistent device for LUN/Disk in RHEL 4.5

Try this command instead (note: "block" not "dev"):

# scsi_id -g -s /block/sdm

(As the error message indicates, the "scsi_id ... -s" automatically prefixes /sys into the pathname you specify.)

MK
MK
Md. Minhaz Khan
Super Advisor

Re: Configure Persistent device for LUN/Disk in RHEL 4.5

Thanks Everybody. At last , i have successfully configured persistent disk in RHEL5. Please see the attachment for total procedure

Thanks
Minhaz
Md. Minhaz Khan
Super Advisor

Re: Configure Persistent device for LUN/Disk in RHEL 4.5

Thanks to all
Zinky
Honored Contributor

Re: Configure Persistent device for LUN/Disk in RHEL 4.5

SO for those vMware disks -- it is NOT possible to have persistent device or friendly names under udev? No?

What are those DGC disks btw? Are those directly presented (via a Vmware virtual HBA?) or RDM (raw device mapped) disk?
Hakuna Matata

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