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Date: Tue, 05 May 2009 10:23:22 -0500 From: Eric Sandeen <sandeen@...hat.com> To: Ramesh <ramesh@...san.com> CC: ext3-users@...hat.com, linux-ext4@...r.kernel.org Subject: Re: File System Selection Ramesh wrote: > Hi All, > > > I am developing a SD Block Driver. > > As per old specification (SD Spec 2.0 ) Maximum size of SD memory > card is 32 GB. - We used ext2 file system. > > By referring the new Specification (SD Spec 3.0) SD memory card size > is reached upto and including 2TB (Terra Byte) - Block size strictly > limited to 512 only (as per specification). > > My Questions. > > 1. For 2TB disk with Block size 512, Which file system is preferred > (ext3/ext4) do you mean sector size of the block device, or block size of the fileystem? I guess it doesn't matter much either way, 2^32*512 is 2T. Either ext3 or ext4 can handle this size, you'll probably need to make your decision based on other factors. > 2. In a 32 bit machine, If I installed the Fedora 10 ( having ext4), > am I able to use it as effectively ( for the maximum disk/file size > usage). To utilize 2TB or more size hard disk, is this allowable to > use 32 bit machine with Ext4 fs? > On a 32 bit machine you will be limited to 16T, this is actually a page cache limitation. But 2T should be fine. -Eric > Thanks in advance. > > Regards, Ramesh > -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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