Re: Cannot write file larger than 2TB on x86_64?

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Filesystem File Size Limit Filesystem Size Limit ext2/ext3 with 1 KiB blocksize 16448 MiB (~ 16 GiB) 2048 GiB (= 2 TiB) ext2/3 with 2 KiB blocksize 256 GiB 8192 GiB (= 8 TiB) ext2/3 with 4 KiB blocksize 2048 GiB (= 2 TiB) 8192 GiB (= 8 TiB)

http://www.suse.de/~aj/linux_lfs.html

That's the problem, nevermind!


On Wed, 25 Jul 2007, Justin Piszcz wrote:

Erm, unless this is an EXT3 limitation--oops..

On Wed, 25 Jul 2007, Justin Piszcz wrote:

The kernel is 2.6.9-42.ELsmp on RHEL4 x86_64.

servername$ dd if=/dev/zero of=4.8tb_file bs=1M count=4800000
File size limit exceeded
servername$ (stopped at 2TB)

The 64bit should not need the option obviously, because it is 64bit, is this a b
ug in the kernel?

For 32bit:
.config - Linux Kernel v2.6.22 Configuration
..............................................................................
..................... Support for Large Single Files ...................... . CONFIG_LSF: . . . . Say Y here if you want to be able to handle very large files (bigger . . than 2TB), otherwise say N. . . . . If unsure, say Y. .
 .

For 64bit:
.config - Linux Kernel v2.6.22 Configuration
..............................................................................
............................... Block layer ............................... . Arrow keys navigate the menu. <Enter> selects submenus --->. . . Highlighted letters are hotkeys. Pressing <Y> includes, <N> excludes, . . <M> modularizes features. Press <Esc><Esc> to exit, <?> for Help, </> . . for Search. Legend: [*] built-in [ ] excluded <M> module < > . . ....................................................................... . . . --- Enable the block layer . . . . [ ] Support for tracing block io actions . . . . IO Schedulers ---> . .
 . .
                               .



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