Callum Lerwick wrote:
> On Sat, 2008-12-27 at 12:00 -0600, Eric Sandeen wrote:
>> On a 256mb filesystem the journal will only be 32mb by default. Still a
>> chunk of the fs, but not half! :)
>
> Hmmm, I think this has changed over the years, but it seems the recent
> code looks like this:
>
> int ext2fs_default_journal_size(__u64 blocks)
> {
> if (blocks < 2048)
> return -1;
> if (blocks < 32768)
> return (1024);
> if (blocks < 256*1024)
> return (4096);
> if (blocks < 512*1024)
> return (8192);
> if (blocks < 1024*1024)
> return (16384);
> return 32768;
> }
>
> It's based on block size. So on a 256mb filesystem, the block size
> defaults to 1k, and you get an 8mb journal.
You're right, I used 4k blocks in my napkin-sketch, oops :)
-Eric
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