Hi,
I know from first-hand experience that Datasat DC20 and XDC Solo G3
(now Barco) do not handle inode sizes in ext2 other than 128 bytes.
These servers are long out of production, but there are still a couple
of them in use, at least here in Sweden.
The reason for this limitation of the DC20 and Solo G3 is that it uses
a Windoze OS with an old an buggy ext2 fs driver which only supports
the older, smaller inode size.
Best,
Mattias
On Thu, Jan 19, 2017 at 7:52 PM, Wolfgang Woehl via DCPomatic
<dcpomatic(a)carlh.net> wrote:
On 16 Jan 2017, at 12:44, Jim Dummett via
DCPomatic <dcpomatic(a)carlh.net> wrote:
Hmm. Interesting. A good first step I guess might be to submit a patch for gparted to
allow you to set the inode. Most people of course prefer a GUI but I only know of command
line methods to do it completely by the book with 128 inode value.
A bit of context wrt inode size of 128 bytes; these couple of paragraphs were written in
runes in the year of 2013:
///
The default inode size for EXT2/3 filesystems changed years ago (from 128 to 256 bytes).
The motivation was to be able to store extended attributes. In Digital Cinema context
noone should care, really, but there's a catch:
Systems with 2.4 series linux kernels won't be able to mount filesystems with inode
sizes > 128 bytes at all.
In linux history terms the 2.4 series is the middle ages. Noone sane should be running
kernels that old. Fact is there are some systems out there which do.
These are abandoned legacy systems.
Their vendors don't care to upgrade them.
Their users are not eager to spend a couple of K's again.
So if you don't want to run into issues you'll want to use 128 bytes for inode
size, period.
Yes, this is 2013. Most userland FS tools won't even let you tweak the setting. Its
relevance died that far back. mkfs.ext2 and mkfs.ext3 - here we come!
One thing these vendors are rather tight-lipped about:
Linux 2.4 series kernels carry a long list of vulnerabilities. These systems are not at
all safe or able to withstand even half-serious snooping since a long time. If I were Fox
or Warner or Sony I'd make sure these boxes either get updated or blacklisted fast.
///
My theory and hope, or rather, game plan at the time was that userland would increasingly
ignore a setting from the stone ages and force those systems out of the market.
I don’t have any numbers to check how that worked out.
Got a feeling, though, it just didn’t and the affected systems are still out there
somewhere. Waiting. Slowly filling their caves with bones of the newborns they get fed
with every now and then. Patiently preparing to grab you by the throat :)
Wolfgang
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-mattias