multiple disk problem

[badhonsoam]

i have centos fog server. i am pulling image from ubuntu 16.04 server with has multiple disk. i am selecting image option all partition multiple disk. but everytime the second disk showing ( reading failed
reading partition table /dev/vdb … failed

[Sebastian Roth]

@badhonsoam Please post a picture of the error!

[badhonsoam]


[badhonsoam]

check reading /dev/vdc and /vdb

[Sebastian Roth]

@badhonsoam Do I get this correct? You have installed ubuntu 16.04 server within that VM you want to capture? So I am wondering what is on that second disk?

Please boot the VM to it’s OS and run the command parted -l. Take a picture of the output and post here. If parted is not installed you can also run fdisk -l…

[badhonsoam]

@Sebastian-Roth
This is the situation, we have a vm of ubuntu 16.04. which has 3 separate HDD called /dev/vda, /dev/vdb and /dev/vdc
we want capture the disk image and provision in another platform. step-1, we created a image os: linux

then gave the capture command

but it only capturing 1st disk as u see my previous post . that’s the issue
i need all 3 disk to capture

[badhonsoam]

@Sebastian-Roth i just did this with multi-disk windows VM . its ok and working. but in in linux vm we are having this issue.

[Sebastian Roth]

@badhonsoam I am still not convinced you have data on the second and third disk - not something FOG can see. Possibly you are using some kind of software RAID or LVM or whatever???

Again: Please boot the VM to it’s OS and run the command parted -l. Take a picture of the output and post here. If parted is not installed you can also run fdisk -l…

[badhonsoam]

@Sebastian-Roth check

details

[Sebastian Roth]

@badhonsoam You have ceph on the second and third disk. This is a somewhat special filesystem. Not something FOG can handle out of the box. If you are really keen to get this added to FOG you need to engage and work on this. FOG is open source and everyone can join in and add the features needed.

Allow me one more hint: In the image settings you posted in the picture I see that you use “Partimage” as Image Manager. Is this for a good reason? Please chose “Partclone” here if you don’t have good reasons to use the old “Partimage” method! I think there was a bug in FOG 1.5.5 that on fresh new installs it would select “Partimage” as default but this has been fixed since.

[Sebastian Roth]

@badhonsoam Just had an idea what you could try as a workaround:

• Create three new image definitions (names img_vda, img_vdb and img_vdc)
• Set img_vda to type “Multiple Partition - Single Disk” but img_vdb and img_vdc to “Raw Image”
• Edit the host settings and set Primary Disk option to /dev/vda and Image Association to img_vda to and do a capture the first drive.
• Edit the host settings and set Primary Disk option to /dev/vdb and Image Association to img_vdb to and do a capture the second drive.
• Edit the host settings and set Primary Disk option to /dev/vdc and Image Association to img_vdc to and do a capture the third drive.

[badhonsoam]

@Sebastian-Roth

on this step

Edit the host settings and set Primary Disk option to /dev/vdb and Image Association to img_vdb to and do a capture the second drive.

[badhonsoam]

@Sebastian-Roth any suggestion

[Sebastian Roth]

@badhonsoam Too bad I didn’t check the actual script code when I came up with this idea to see if this could actually work. Seems like FOS needs to see partitions to be able to capture anything.

As I hope this might help you I did “quick-fix” this and build a new init file for you: http://fogproject.org/inits/init_allow-non-partition.xz

Rename the original init.xz in /var/www/html/fog/service/ipxe/ on your FOG server and put the newly downloaded as init.xz in that same directory.

With that new init file you need to manually change one of the FOG settings. Go to the FOG web UI -> FOG Configuration -> FOG Settings -> FTP Server and increase KERNEL RAMDISK SIZE from 127000 to 275000.

If you run into some compatibility issue with the kernel, try downloading the latest here: https://fogproject.org/kernels/ (or through the FOG web UI)

[badhonsoam]

@Sebastian-Roth said in multiple disk problem:

SIZE

as you asked i tried like this which is showing below error like previous

[badhonsoam]

This post is deleted!

[badhonsoam]

This post is deleted!

[Sebastian Roth]

@badhonsoam See there is a slight difference between the messages. This time it printed “A warning has been detected!” instead of “An error has been detected!”.

It should sit at the warning for 60 seconds and then go ahead! So you just need to be patient enough and leave it.

[Sebastian Roth]

@badhonsoam said in multiple disk problem:

is their any issue with lvm disk?

As I told you ceph filesystem is something very special. As well it uses LVM which FOG is not able to handle natively. Because of that I told you to try using RAW image type and modified the init for you.

[badhonsoam]

@Sebastian-Roth i am trying another vm doesnot contain ceph osd