Re: How to generate a large file allocating space
Alex Bligh <[email protected]> Tue, 2 Nov 2010 07:58:02 +0000
| Newsgroups | gmane.comp.file-systems.ext3.user |
|---|---|
| Message-ID | <[email protected]> |
Ted, On 2 Nov 2010, at 01:49, "Ted Ts'o" <[email protected]> wrote: > But why not just use O_DIRECT? Do you really need to access the > disk directly, as opposed to using O_DIRECT? > Because more than one machine will be accessing the data on the ext4 volume (over iSCSI), though access to the large files is mediated by locks higher up. To use O_DIRECT each accessing machine would need to have the volume mounted, rather than merely receiving a list of extents. -- Alex Bligh