It's really more of an OS tuning question, isn't it?
The usage pattern of a BIND instance is:
a) not much writing of master zone files or journal files unless Dynamic
Update is enabled and the frequency of updates is relatively high,
b) not much writing of slave/stub zone files or journal files, unless
the zones have aggressive REFRESH settings and frequent updates
c) not much reading of zone files except at startup or restart/reload,
or possibly whenever writes occur, to read the zone data back into memory
Now, given the usage pattern(s), how best to tune performance, based on
the capabilities/limitations of the underlying OS and hardware? Same
partition and/or filesystem versus separate partitions and/or
filesystems? A different type of filesystem? Is the disk storage RAIDed?
Striped? Mirrored? Is a journaling filesystem in use?
Older filesystems used to run into performance problems when directories
got really large, so some folks used to split up their zones by the
initial letter of the zone name, e.g. "zonefiles/a/aardvark.com",
"zonefiles/b/beetlebomb.com". I don't know if that's still an issue with
modern filesystems though. We've never had more than a few thousand
zones, with relatively rare restarts/reloads, and most of the zones not
changing very frequently, so we haven't noticed any problems, and
haven't resorted to any "special" setup for storing zone files.
It occurs to me that the "journal" zone-level option in modern versions
of BIND could theoretically be used to group all of the journal files
into a separate filesystem/slice/partition, which might be better tuned
for frequent updates, than the zone files themselves, which would change
relatively infrequently. I haven't tested this theory though...
- Kevin
On 12/31/2010 12:24 AM, Michelle Konzack wrote:
Hello *,
I am hosting on my 6 NameServers 200.000 Domains and now in the meantime
it becomes complicate because they are arround 230.000 files now
including sub domains.
There are currrently 18 TLs.
My Question is:
How do you handel such amount of files and where is the best
place to store them on a Debian System (Lenny/Squeeze).
Do you recommend to store it on a seperated partition, even
if they have currently only arround 87 MByte?
Thanks, Greetings and nice Day/Evening
Michelle Konzack
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