Hi, Does anybody know whether the ext3 file system support Direct_io? if so, how do you enable it? I went through the man page of mount, and it did not mention such option? my system is running : Red Hat Enterprise Linux AS release 3 (Taroon Update 2) Kernel 2.4.21-15.ELsmp on an i686 Thanks much!!! David.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 david x chan schrieb:> > > Hi, > > Does anybody know whether the ext3 file system > support Direct_io? if so, how do you enable it? > I went through the man page of mount, and it did > not mention such option?there was an announcement on lkml, but the patch was not taken to mainline i think: http://seclists.org/lists/linux-kernel/2003/Jun/3705.html Christian. - -- BOFH excuse #374: It's the InterNIC's fault. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org iD8DBQFA7olnC/PVm5+NVoYRAr6RAJ9GKNf0jWzhpZOH+OEH2MzrB7GxYACgtejk s9PXr6Cp8MEhP4Iv2gcsv3w=PR10 -----END PGP SIGNATURE-----
On Friday 09 July 2004 01:42, david x chan wrote: Hi David,> Does anybody know whether the ext3 file system > support Direct_io? if so, how do you enable it? > I went through the man page of mount, and it did > not mention such option?ext3 supports direct i/o, but not in 2.4 mainline. It was added in 2.6. Further direct i/o isn't a mount option. Please read http://lse.sourceforge.net/io/aio.html http://www.uwsg.iu.edu/hypermail/linux/kernel/0208.1/1213.html for example.> my system is running : > Red Hat Enterprise Linux AS release 3 (Taroon Update > 2) > Kernel 2.4.21-15.ELsmp on an i6862.4-aa, 2.4-suse, 2.4-wolk tree and some others have it, 2.4-rh kernels do not have it. -- ciao, Marc