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How to expose raw SATA disks in KVM guest

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1

I have a CentOS 7.3 64-bit host OS and KVM version (qemu-kvm-1.5.3-126.el7.x86_64) and need to run Fedora Core 13 (32-bit) as guest OS. I have recent hardware which has some SATA and IDE disks attached to it.

I configured it to expose the raw SATA disks (config is as below), but the guest OS lists them as SCSI whereas I would expect it to show up as SATA.

Just to check if this is an issue with KVM I installed CentOS 7.3 as a guest OS (that is same host and guest OS), and the SATA disk lists as ATA (is this your expected behavior and correct? you need to confirm this).

Just to see if anything changes if I upgrade KVM, on another machine (where I don't have SATA disk) I upgraded KVM to centos-release-qemu-evm KVM qemu-kvm-ev-2.12.0-18.el7_6.1.1 (with CentOS 7.6) and created a file based SATA disk - this also shows up as SCSI in Fedora 13 (32-bit) guest OS.

How do we get to expose a SATA disk as SATA in the guest OS Fedora 13 (32-bit) ? Also we have some IDE disks and would like to expose them as IDE in the Fedora 13 guest, how can we go about it ?

Appreciate all help.

configuration:

 <disk type='block' device='disk'>

 <driver name='SATA' type='raw' cache='none'/>

 <source dev='/dev/sde2'/>

 <target dev='sde' bus='SATA'/>

</disk>

centos7 kvm-virtualization storage fedora sata

share|improve this question

edited Apr 14 at 7:55

sushma

asked Apr 13 at 5:37

sushmasushma

63

New contributor

sushma is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Exactly what do you mean when you say that "the guest OS lists them as SCSI"? Please show us exactly what you saw.
  
  – Michael Hampton♦
  Apr 14 at 17:16
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  In both host and guest I ran "udevadm info --query=property --name=/dev/sde" command. The command output in host showing as " ID_PATH=pci-0000:02:00.0-sas-0x5fae190000009883-lun-0 , ID_SAS_PATH=pci-0000:02:00.0-sas-exp0x5fae1900000098bf-phy3-lun" and in guest as "ID_SCSI_COMPAT=SATA_QEMU_HARDDISK_QM00005, ID_PATH=pci-0000:00:09.0-scsi-0:0:0:0". Even in guest I have udevrule which didn't recognises the disk as SATA/SAS.
  
  – sushma
  Apr 15 at 17:40
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Hmm. Is something broken? Fedora 13 is many years past end of life, so you probably won't be able to get any support anyway.
  
  – Michael Hampton♦
  Apr 16 at 1:31
  

  
  
  
  

add a comment | 

1

I have a CentOS 7.3 64-bit host OS and KVM version (qemu-kvm-1.5.3-126.el7.x86_64) and need to run Fedora Core 13 (32-bit) as guest OS. I have recent hardware which has some SATA and IDE disks attached to it.

I configured it to expose the raw SATA disks (config is as below), but the guest OS lists them as SCSI whereas I would expect it to show up as SATA.

Just to check if this is an issue with KVM I installed CentOS 7.3 as a guest OS (that is same host and guest OS), and the SATA disk lists as ATA (is this your expected behavior and correct? you need to confirm this).

Just to see if anything changes if I upgrade KVM, on another machine (where I don't have SATA disk) I upgraded KVM to centos-release-qemu-evm KVM qemu-kvm-ev-2.12.0-18.el7_6.1.1 (with CentOS 7.6) and created a file based SATA disk - this also shows up as SCSI in Fedora 13 (32-bit) guest OS.

How do we get to expose a SATA disk as SATA in the guest OS Fedora 13 (32-bit) ? Also we have some IDE disks and would like to expose them as IDE in the Fedora 13 guest, how can we go about it ?

Appreciate all help.

configuration:

 <disk type='block' device='disk'>

 <driver name='SATA' type='raw' cache='none'/>

 <source dev='/dev/sde2'/>

 <target dev='sde' bus='SATA'/>

</disk>

centos7 kvm-virtualization storage fedora sata

share|improve this question

edited Apr 14 at 7:55

sushma

asked Apr 13 at 5:37

sushmasushma

63

New contributor

sushma is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Exactly what do you mean when you say that "the guest OS lists them as SCSI"? Please show us exactly what you saw.
  
  – Michael Hampton♦
  Apr 14 at 17:16
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  In both host and guest I ran "udevadm info --query=property --name=/dev/sde" command. The command output in host showing as " ID_PATH=pci-0000:02:00.0-sas-0x5fae190000009883-lun-0 , ID_SAS_PATH=pci-0000:02:00.0-sas-exp0x5fae1900000098bf-phy3-lun" and in guest as "ID_SCSI_COMPAT=SATA_QEMU_HARDDISK_QM00005, ID_PATH=pci-0000:00:09.0-scsi-0:0:0:0". Even in guest I have udevrule which didn't recognises the disk as SATA/SAS.
  
  – sushma
  Apr 15 at 17:40
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Hmm. Is something broken? Fedora 13 is many years past end of life, so you probably won't be able to get any support anyway.
  
  – Michael Hampton♦
  Apr 16 at 1:31
  

  
  
  
  

add a comment | 

I have a CentOS 7.3 64-bit host OS and KVM version (qemu-kvm-1.5.3-126.el7.x86_64) and need to run Fedora Core 13 (32-bit) as guest OS. I have recent hardware which has some SATA and IDE disks attached to it.

I configured it to expose the raw SATA disks (config is as below), but the guest OS lists them as SCSI whereas I would expect it to show up as SATA.

Just to check if this is an issue with KVM I installed CentOS 7.3 as a guest OS (that is same host and guest OS), and the SATA disk lists as ATA (is this your expected behavior and correct? you need to confirm this).

Just to see if anything changes if I upgrade KVM, on another machine (where I don't have SATA disk) I upgraded KVM to centos-release-qemu-evm KVM qemu-kvm-ev-2.12.0-18.el7_6.1.1 (with CentOS 7.6) and created a file based SATA disk - this also shows up as SCSI in Fedora 13 (32-bit) guest OS.

How do we get to expose a SATA disk as SATA in the guest OS Fedora 13 (32-bit) ? Also we have some IDE disks and would like to expose them as IDE in the Fedora 13 guest, how can we go about it ?

Appreciate all help.

configuration:

 <disk type='block' device='disk'>

 <driver name='SATA' type='raw' cache='none'/>

 <source dev='/dev/sde2'/>

 <target dev='sde' bus='SATA'/>

</disk>

centos7 kvm-virtualization storage fedora sata

share|improve this question

edited Apr 14 at 7:55

sushma

asked Apr 13 at 5:37

sushmasushma

63

New contributor

sushma is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

 <disk type='block' device='disk'>

 <driver name='SATA' type='raw' cache='none'/>

 <source dev='/dev/sde2'/>

 <target dev='sde' bus='SATA'/>

</disk>

share|improve this question

edited Apr 14 at 7:55

sushma

asked Apr 13 at 5:37

sushmasushma

63

New contributor

sushma is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

share|improve this question

edited Apr 14 at 7:55

sushma

asked Apr 13 at 5:37

sushmasushma

63

New contributor

sushma is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

asked Apr 13 at 5:37

sushmasushma

63

New contributor

sushma is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

asked Apr 13 at 5:37

sushmasushma

63