Hello Justin, Thanks for the feedback!
On Fri, 16 Nov 2001, Justin Cormack wrote: > > and having an ext2fs filesystem on the cdrom? Are there any gotchas? > > I would really like to have a completely read-only filesystem and no > > RAM disk if at all posible. I know this sounds strange, but I am not > > the one making up the requirements. > > Yes it is possible. I have in the past booted from read only compact flash. > (much more convenient than cdrom I think as it is smaller). There are a Do you have recommendations for a compact flash vendor? What is the form factor for the compact flash you've used (pcmcia card, PCI coard?) I'm looking for a solution that would work with a clone type box. > > Also, is anyone aware of a way to maintain state across reboots on > > a diskless system? I am looking for some type of static RAM card. I > > found two cards (one by General Standards) but neither have drivers > > for linux. I was considering the /dev/nvram driver, but it stores > > only 50 bytes and I need to store around 80 bytes. The other painful > > requirment is that data is written out every second so the various > > compact flash solutions won't work since they have memory cycle limits > > between 100,000 and 300,000 cycles. > > thats difficult. Some of the journalling file system people were talking > about journalling to nvram devices; try checking the archives to see if > anything was mentioned. You might be able to adapt a pcmcia ram device to Thanks for the suggestion. > run off a battery (though I havent seen one for some time). You cant comporess > your data to 50 bytes? Since the data is a random string for an RNG seed, it doesn't compress. Thanks, Aaron
