clonezilla or boot pxe detect the hdd in /dev/sdb instead of /dev/sda...

A partition and disk imaging/cloning program

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clonezilla or boot pxe detect the hdd in /dev/sdb instead of /dev/sda because SDcard reader is present

Forum: Clonezilla server edition

Creator: philos

Created: 2014-01-14

Updated: 2014-01-19

philos - 2014-01-14

Good morning,
I use clonezilla server for restore images on Lenovo machines via PXE boot.
Since the most recent versions of ubuntu (recent kernel), the only hard drive is not detected in /dev/sda if the machine have a SDcard reader, hard drive is then detected in /dev/sdb and clonezilla shows me an error hard disk sda found.
I looking for a way for the single hard drive of each machine is still always detected in /dev/sda, not in /dev/sdb.
Knowing that the machines do not always have the same brand of hard drive.
Currently I have to disable the SDcard reader in the bios to have the hard disk in sda and clonezilla server can restore images.

I almost find anything about this problem.
Thanks you by advance

Philippe

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Steven Shiau - 2014-01-15

Yes, this is really annoying.
Thanks for reporting this issue.
Are you doing the multicast restoring?
If not, maybe in the future we should find a way to use device name based on the serial number, not Linux block device name.

Steven.

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philos - 2014-01-15

No I use the unicast restore.

I can not use the serial number as it is every time new machines.

I must find a way to make it always attached SCSI disk which is detected as /dev/sda.

Currently I have this:

Dmesg | grep "Attached SCSI"
sd 4:0:0:0: [sda] Attached SCSI removable disk
sd 1:0:0:0: [sdb] Attached SCSI disk

Last edit: philos 2014-01-15

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Steven Shiau - 2014-01-15

So you use unicast, but it's unattended mode? Or you can accept to choose the destination disk?
If so, check this:
http://clonezilla.org/advanced/researved-word-ocs-sr.php
The "ask_user" could be used for the destination device.
In your case, if you need an unattended mode, I believe a script could be developed for this, and you can use the clonezilla live's boot parameters to start the script for that. This is the idea now I have.
For a general method, I still need more scenarios and info so that we might come out another reserved name for this puppose...

Steven.

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philos - 2014-01-16

Yes I use unattended mode.

I thought. There is no you there a way to disable management "Attached SCSI removable disk" or "usb" because I have no need it for image restore.
For do it, must I to recompile the kernel ?

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Steven Shiau - 2014-01-19

The effort to recompile the kernel will be endless... For a new kernel release one you might have to do that again. It will be easier to change that in Clonezilla, i.e. if we could have a better way to deal with this.
I am thinking something like "ask_user", let's called it "1st_hd", and it could auto detect the 1st hard drive, as the destination disk. This is just an idea...
For the time being, a customized script might be easier.

Steven.

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