Hello all! I'm hoping someone can help. I'm having 2 issues; first:
When trying to load a CentOS LiveCD via PXE on an Intel NUC (NUC6CAY), I get: "Not enough memory to load specified image". The image is 1.1 gigs, and there is 16 gigs of memory in the NUC.
To combat this, I found this forum post https://www.centos.org/forums/viewtopic.php?t=1398 which suggested using the "mem=" kernel parameter to manually set it.
The next problem I get is one of two things:
On a normal working system, I get the dots loading in PXE, then it freezes on "ready." forever On the NUC, I get a sqaushfs crash saying that the image is unusable.
My questions are:
Has anyone successfully used the "mem=" parameter in a PXE environment? I wasn't even aware that drivers were necessary for a kernel image to read RAM; I'd thought this was something that was just inherent. Does the CentOS PXE kernel need to be updated?
On 03/15/2017 06:08 PM, Locane wrote:
Hello all! I'm hoping someone can help. I'm having 2 issues; first:
When trying to load a CentOS LiveCD via PXE on an Intel NUC (NUC6CAY), I get: "Not enough memory to load specified image". The image is 1.1 gigs, and there is 16 gigs of memory in the NUC.
To combat this, I found this forum post https://www.centos.org/forums/viewtopic.php?t=1398 which suggested using the "mem=" kernel parameter to manually set it.
The next problem I get is one of two things:
On a normal working system, I get the dots loading in PXE, then it freezes on "ready." forever On the NUC, I get a sqaushfs crash saying that the image is unusable.
My questions are:
Has anyone successfully used the "mem=" parameter in a PXE environment? I wasn't even aware that drivers were necessary for a kernel image to read RAM; I'd thought this was something that was just inherent. Does the CentOS PXE kernel need to be updated? _______________________________________________ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
I do a lot of PXE at home. Is it possible the tftp of the image is failing somehow? I had problems with image size and had to switch to:
http://www.kernel.org/pub/software/network/tftp/
found in tftp-server
I've included my pxelinux.cfg/default for Centos 6.4 below:
# Centos 6.4 label centos6 kernel centos/6.4/64/vmlinuz append initrd=centos/6.4/64/initrd.img ramdisk_size=100000 text ks=http://192.168.0.134/ks/ks6-64.cfg
Bruce, thanks for the reply - I don't think so. The image works fine on every other supermicro server we've ever used, and continues to do so, except for the NUC.
Using the mem= kernel parameter gets the NUC further in the boot process, but then it complains about the squashfs error (for the same working image everywhere else). The mem= kernel parameter also breaks other normally-working systems, so that's why I'm trying to either:
1. Fix the mem= kernel parameter, somehow or 2. Get the vmlinuz initial kernel to recognize the memory in the NUC, somehow
On Wed, Mar 15, 2017 at 10:26 PM, Bruce Ferrell bferrell@baywinds.org wrote:
On 03/15/2017 06:08 PM, Locane wrote:
Hello all! I'm hoping someone can help. I'm having 2 issues; first:
When trying to load a CentOS LiveCD via PXE on an Intel NUC (NUC6CAY), I get: "Not enough memory to load specified image". The image is 1.1 gigs, and there is 16 gigs of memory in the NUC.
To combat this, I found this forum post https://www.centos.org/forums/viewtopic.php?t=1398 which suggested using the "mem=" kernel parameter to manually set it.
The next problem I get is one of two things:
On a normal working system, I get the dots loading in PXE, then it freezes on "ready." forever On the NUC, I get a sqaushfs crash saying that the image is unusable.
My questions are:
Has anyone successfully used the "mem=" parameter in a PXE environment? I wasn't even aware that drivers were necessary for a kernel image to read RAM; I'd thought this was something that was just inherent. Does the CentOS PXE kernel need to be updated? _______________________________________________ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
I do a lot of PXE at home. Is it possible the tftp of the image is
failing somehow? I had problems with image size and had to switch to:
http://www.kernel.org/pub/software/network/tftp/
found in tftp-server
I've included my pxelinux.cfg/default for Centos 6.4 below:
# Centos 6.4 label centos6 kernel centos/6.4/64/vmlinuz append initrd=centos/6.4/64/initrd.img ramdisk_size=100000 text ks= http://192.168.0.134/ks/ks6-64.cfg
CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
On 3/15/2017 6:08 PM, Locane wrote:
Hello all! I'm hoping someone can help. I'm having 2 issues; first:
When trying to load a CentOS LiveCD via PXE on an Intel NUC (NUC6CAY), I get: "Not enough memory to load specified image". The image is 1.1 gigs, and there is 16 gigs of memory in the NUC.
that NUC uses a Celeron J3455 "Apollo Lake" system-on-a-chip, all new in Q3 2016... I wonder if that's supported by the version (unspecified) of CentOS you're installing ? You may need a newer kernel... The Apollo Lake is an extension of Skylake, which is generation 6 of the Core I3/5/7 series.
Hey John, thanks - it's CentOS 7.3.
I was just looking at "newer" vmlinuz kernels; I was going to try scraping one out of Ubuntu or Fedora.
On Fri, Mar 17, 2017 at 10:54 AM, John R Pierce pierce@hogranch.com wrote:
On 3/15/2017 6:08 PM, Locane wrote:
Hello all! I'm hoping someone can help. I'm having 2 issues; first:
When trying to load a CentOS LiveCD via PXE on an Intel NUC (NUC6CAY), I get: "Not enough memory to load specified image". The image is 1.1 gigs, and there is 16 gigs of memory in the NUC.
that NUC uses a Celeron J3455 "Apollo Lake" system-on-a-chip, all new in Q3 2016... I wonder if that's supported by the version (unspecified) of CentOS you're installing ? You may need a newer kernel... The Apollo Lake is an extension of Skylake, which is generation 6 of the Core I3/5/7 series.
-- john r pierce, recycling bits in santa cruz
CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
-
Bruce Ferrell -
John R Pierce -
Locane