Re: [fedora-arm] [master/rhel7-branch][PATCH] Don't allow bootloader and /boot on iSCSI on s390 (#1034222)
8:01 a.m.
On Tue, 26 Nov 2013 14:50:29 +0100
Vratislav Podzimek <vpodzime(a)redhat.com> wrote:
On Tue, 2013-11-26 at 14:47 +0100, Dan Horák wrote:
> On Tue, 26 Nov 2013 14:41:15 +0100
> Vratislav Podzimek <vpodzime(a)redhat.com> wrote:
>
> > s390(x) cannot boot from an iSCSI disk.
>
> what about other arches eg. ARM?
Is there any bug on that? And any HW/person for testing?
I think boot from iSCSI should be enabled only for positive list of
arches (like x86, ppc), I guess it requires special support in
device firmware
the Fedora/ARM list is in on CC
Dan
8:17 a.m.
New subject: [master/rhel7-branch][PATCH] Don't allow bootloader and /boot on iSCSI on s390 (#1034222)
On Tue, Nov 26, 2013 at 2:01 PM, Dan Horák <dan(a)danny.cz> wrote:
On Tue, 26 Nov 2013 14:50:29 +0100
Vratislav Podzimek <vpodzime(a)redhat.com> wrote:
> On Tue, 2013-11-26 at 14:47 +0100, Dan Horák wrote:
> > On Tue, 26 Nov 2013 14:41:15 +0100
> > Vratislav Podzimek <vpodzime(a)redhat.com> wrote:
> >
> > > s390(x) cannot boot from an iSCSI disk.
> >
> > what about other arches eg. ARM?
> Is there any bug on that? And any HW/person for testing?
I think boot from iSCSI should be enabled only for positive list of
arches (like x86, ppc), I guess it requires special support in
device firmware
the Fedora/ARM list is in on CC
It depends, you can boot using an initrd with SW iSCSI support (either
off a local card or via netboot) and have the rootfs on an iSCSI LUN
and there's a few people have done that with the Trimslice as a PCIe
attached gig interface tends to be faster than usb2 attached SSD.
If you mean via an iSCSI HW device with appropriate firmware and
firmware provided iSCSI LUN where the OS just sees the usual /dev/sdX
style devices we don't currently see that functionality but I wouldn't
be surprised if it was available of some Server SoCs soon.
Peter
8:28 a.m.
New subject: [master/rhel7-branch][PATCH] Don't allow bootloader and /boot on iSCSI on s390 (#1034222)
On Tue, 26 Nov 2013 14:17:22 +0000
Peter Robinson <pbrobinson(a)gmail.com> wrote:
On Tue, Nov 26, 2013 at 2:01 PM, Dan Horák <dan(a)danny.cz>
wrote:
> On Tue, 26 Nov 2013 14:50:29 +0100
> Vratislav Podzimek <vpodzime(a)redhat.com> wrote:
>
>> On Tue, 2013-11-26 at 14:47 +0100, Dan Horák wrote:
>> > On Tue, 26 Nov 2013 14:41:15 +0100
>> > Vratislav Podzimek <vpodzime(a)redhat.com> wrote:
>> >
>> > > s390(x) cannot boot from an iSCSI disk.
>> >
>> > what about other arches eg. ARM?
>> Is there any bug on that? And any HW/person for testing?
>
> I think boot from iSCSI should be enabled only for positive list of
> arches (like x86, ppc), I guess it requires special support in
> device firmware
>
> the Fedora/ARM list is in on CC
It depends, you can boot using an initrd with SW iSCSI support (either
off a local card or via netboot) and have the rootfs on an iSCSI LUN
and there's a few people have done that with the Trimslice as a PCIe
attached gig interface tends to be faster than usb2 attached SSD.
If you mean via an iSCSI HW device with appropriate firmware and
firmware provided iSCSI LUN where the OS just sees the usual /dev/sdX
style devices we don't currently see that functionality but I wouldn't
be surprised if it was available of some Server SoCs soon.
This is about having initrd (and anaconda installed bootloader) on iSCSI
LUN (that carries /boot), root on iSCSI should work even for s390 I
think :-)
Dan
3:39 p.m.
New subject: [master/rhel7-branch][PATCH] Don't allow bootloader and /boot on iSCSI on s390 (#1034222)
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El Tue, 26 Nov 2013 14:17:22 +0000
Peter Robinson <pbrobinson(a)gmail.com> escribió:
On Tue, Nov 26, 2013 at 2:01 PM, Dan Horák <dan(a)danny.cz>
wrote:
> On Tue, 26 Nov 2013 14:50:29 +0100
> Vratislav Podzimek <vpodzime(a)redhat.com> wrote:
>
>> On Tue, 2013-11-26 at 14:47 +0100, Dan Horák wrote:
>> > On Tue, 26 Nov 2013 14:41:15 +0100
>> > Vratislav Podzimek <vpodzime(a)redhat.com> wrote:
>> >
>> > > s390(x) cannot boot from an iSCSI disk.
>> >
>> > what about other arches eg. ARM?
>> Is there any bug on that? And any HW/person for testing?
>
> I think boot from iSCSI should be enabled only for positive list of
> arches (like x86, ppc), I guess it requires special support in
> device firmware
>
> the Fedora/ARM list is in on CC
It depends, you can boot using an initrd with SW iSCSI support (either
off a local card or via netboot) and have the rootfs on an iSCSI LUN
and there's a few people have done that with the Trimslice as a PCIe
attached gig interface tends to be faster than usb2 attached SSD.
If you mean via an iSCSI HW device with appropriate firmware and
firmware provided iSCSI LUN where the OS just sees the usual /dev/sdX
style devices we don't currently see that functionality but I wouldn't
be surprised if it was available of some Server SoCs soon.
I don't know of any u-boot supoort for iscsi, but its always
possible. I expect that aarch64 from day 1 will support iSCSI. I think
that the 32 bit devices that have UEFI should have support also.
Dennis
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4:10 p.m.
New subject: [master/rhel7-branch][PATCH] Don't allow bootloader and /boot on iSCSI on s390 (#1034222)
On Tue, Nov 26, 2013 at 9:39 PM, Dennis Gilmore <dennis(a)ausil.us> wrote:
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El Tue, 26 Nov 2013 14:17:22 +0000
Peter Robinson <pbrobinson(a)gmail.com> escribió:
> On Tue, Nov 26, 2013 at 2:01 PM, Dan Horák <dan(a)danny.cz> wrote:
> > On Tue, 26 Nov 2013 14:50:29 +0100
> > Vratislav Podzimek <vpodzime(a)redhat.com> wrote:
> >
> >> On Tue, 2013-11-26 at 14:47 +0100, Dan Horák wrote:
> >> > On Tue, 26 Nov 2013 14:41:15 +0100
> >> > Vratislav Podzimek <vpodzime(a)redhat.com> wrote:
> >> >
> >> > > s390(x) cannot boot from an iSCSI disk.
> >> >
> >> > what about other arches eg. ARM?
> >> Is there any bug on that? And any HW/person for testing?
> >
> > I think boot from iSCSI should be enabled only for positive list of
> > arches (like x86, ppc), I guess it requires special support in
> > device firmware
> >
> > the Fedora/ARM list is in on CC
>
> It depends, you can boot using an initrd with SW iSCSI support (either
> off a local card or via netboot) and have the rootfs on an iSCSI LUN
> and there's a few people have done that with the Trimslice as a PCIe
> attached gig interface tends to be faster than usb2 attached SSD.
>
> If you mean via an iSCSI HW device with appropriate firmware and
> firmware provided iSCSI LUN where the OS just sees the usual /dev/sdX
> style devices we don't currently see that functionality but I wouldn't
> be surprised if it was available of some Server SoCs soon.
I don't know of any u-boot supoort for iscsi, but its always
possible. I expect that aarch64 from day 1 will support iSCSI. I think
that the 32 bit devices that have UEFI should have support also.
I wasn't referring to iSCSI via uboot, there's other means of achieving it.
10:52 p.m.
New subject: [master/rhel7-branch][PATCH] Don't allow bootloader and /boot on iSCSI on s390 (#1034222)
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Hash: SHA1
El Tue, 26 Nov 2013 22:10:51 +0000
Peter Robinson <pbrobinson(a)gmail.com> escribió:
On Tue, Nov 26, 2013 at 9:39 PM, Dennis Gilmore
<dennis(a)ausil.us>
wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> El Tue, 26 Nov 2013 14:17:22 +0000
> Peter Robinson <pbrobinson(a)gmail.com> escribió:
>> On Tue, Nov 26, 2013 at 2:01 PM, Dan Horák <dan(a)danny.cz> wrote:
>> > On Tue, 26 Nov 2013 14:50:29 +0100
>> > Vratislav Podzimek <vpodzime(a)redhat.com> wrote:
>> >
>> >> On Tue, 2013-11-26 at 14:47 +0100, Dan Horák wrote:
>> >> > On Tue, 26 Nov 2013 14:41:15 +0100
>> >> > Vratislav Podzimek <vpodzime(a)redhat.com> wrote:
>> >> >
>> >> > > s390(x) cannot boot from an iSCSI disk.
>> >> >
>> >> > what about other arches eg. ARM?
>> >> Is there any bug on that? And any HW/person for testing?
>> >
>> > I think boot from iSCSI should be enabled only for positive list
>> > of arches (like x86, ppc), I guess it requires special support in
>> > device firmware
>> >
>> > the Fedora/ARM list is in on CC
>>
>> It depends, you can boot using an initrd with SW iSCSI support
>> (either off a local card or via netboot) and have the rootfs on an
>> iSCSI LUN and there's a few people have done that with the
>> Trimslice as a PCIe attached gig interface tends to be faster than
>> usb2 attached SSD.
>>
>> If you mean via an iSCSI HW device with appropriate firmware and
>> firmware provided iSCSI LUN where the OS just sees the
>> usual /dev/sdX style devices we don't currently see that
>> functionality but I wouldn't be surprised if it was available of
>> some Server SoCs soon.
>
> I don't know of any u-boot supoort for iscsi, but its always
> possible. I expect that aarch64 from day 1 will support iSCSI. I
> think that the 32 bit devices that have UEFI should have support
> also.
I wasn't referring to iSCSI via uboot, there's other means of
achieving it.
Right and that was clear in your email, I was filling in some missing
details from your email. as there is multiple ways for an iscsi target
to be enumerated and your answer only partially answered the question.
Dennis
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4:17 a.m.
New subject: [master/rhel7-branch][PATCH] Don't allow bootloader and /boot on iSCSI on s390 (#1034222)
On Tue, Nov 26, 2013 at 02:17:22PM +0000, Peter Robinson wrote:
On Tue, Nov 26, 2013 at 2:01 PM, Dan Horák <dan(a)danny.cz>
wrote:
> On Tue, 26 Nov 2013 14:50:29 +0100
> Vratislav Podzimek <vpodzime(a)redhat.com> wrote:
>
>> On Tue, 2013-11-26 at 14:47 +0100, Dan Horák wrote:
>> > On Tue, 26 Nov 2013 14:41:15 +0100
>> > Vratislav Podzimek <vpodzime(a)redhat.com> wrote:
>> >
>> > > s390(x) cannot boot from an iSCSI disk.
>> >
>> > what about other arches eg. ARM?
>> Is there any bug on that? And any HW/person for testing?
>
> I think boot from iSCSI should be enabled only for positive list of
> arches (like x86, ppc), I guess it requires special support in
> device firmware
>
> the Fedora/ARM list is in on CC
It depends, you can boot using an initrd with SW iSCSI support (either
off a local card or via netboot) and have the rootfs on an iSCSI LUN
and there's a few people have done that with the Trimslice as a PCIe
attached gig interface tends to be faster than usb2 attached SSD.
For reference:
http://www.delorie.com/arm/trimslice/iscsi.html
Rich.
--
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
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http://people.redhat.com/~rjones/virt-df/
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6 comments
4 participants
participants (4)
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Dan Horák -
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Richard W.M. Jones