Have you tried also to add ramdisk_blocksize=4096 or
ramdisk_blocksize=8192? but I'm not sure it'll resolve.

Could you post also the config of your kernel?

Regards,
-Andrea

Andrew M. Lyons wrote:
> Hi,
> 
> I had already tried --my-modules before, but I thought I'd try it again 
> with 3.7.6 before responding.  My problem isn't that I'm not asking for 
> enough space in /dev/ram.
> 
> Here is the output from si_prepareclient (using --my-modules):
> 
>  >> Evaluating initrd size to be added in the kernel boot options
>  >> (e.g. /etc/systemimager/pxelinux.cfg/syslinux.cfg):
>   >>     suggested value -> ramdisk_size=36944
> 
> and my kernel boot options:
> 
> LABEL si-gwdd_mm
>          KERNEL gwdd_mm_kernel
>          APPEND vga=extended initrd=images/gwdd_mm_initrd.img 
> root=/dev/ram ramdisk_size=40000 SKIP_LOCAL_CFG=y MONITOR_SERVER=image3 
> MONITOR_CONSOLE=yes
> 
> and when I boot it up on a machine with identical hardware:
> 
> ...
> md: Autodetecting RAID arrays.
> md: autorun ...
> md: ... autorun DONE.
> RAMDISK: Compressed image found atblock0
> input: AT Translated Set 2 keyboard as /class/input/input0
> EXT2-fs: blocksize too small for device.
> attempt to access beyond end of device
> ram0: rw=0, want=18446744056529682440, limit=80000
> isofs_fill_super: bread failed, dev=ram0, iso_blknum=17, block=-2147483648
> No filesystem could mount root, tried:  ext2 iso9660
> Kernel panic - not syncing: VFS: Unable to mount root fs on 
> unknown-block(1,0)
> 
> We DO have heterogeneous hardware, but I'm willing to have a separate 
> initrd for each hardware configuration if that's what it takes to get 
> this to work.  As it stands, the default x86_64 boot image doesn't 
> detect the disk properly, and UYOK doesn't work for the reasons 
> described above.
> 
> Thanks for your assistance, and for your work on systemimager!  It's a 
> great tool and your efforts are very much appreciated.
> 
> -Andrew

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