Re: max ext2 fs size

From: Matti Aarnio (matti.aarnio@sonera.fi)
Date: Thu May 11 2000 - 14:52:42 EST


On Thu, May 11, 2000 at 04:08:13PM -0400, willy@thepuffingroup.com wrote:
> On Thu, May 11, 2000 at 02:52:41PM -0300, Rik van Riel wrote:
  [What is maximum EXT2 filesystem size ?]
> > Yes. I believe it is limited to about 2 TB (yes, TERAbyte).
>
> hmm.. it's limited by the triple-indirect block.

No. That is maximum FILE size, not FILESYSTEM.

In theory the EXT2 filesystem max size is 4G * blocksize.
( 4 * 10^9 * 4 * 10^3 = 16 * 10^12 = 16 TB for 4k blocks. )

Practicalities begin to hit at various places:

Some block device drivers support only up to 2G * 512 bytes
(I recall SCSI at least was one of these) = 1 TB.

/Matti Aarnio

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu
Please read the FAQ at http://www.tux.org/lkml/



This archive was generated by hypermail 2b29 : Mon May 15 2000 - 21:00:18 EST