On Fri, Dec 07, 2001 at 12:09:51PM -0600, Ben Lutgens wrote: > > This is the purpose of LVM's snapshot ability. The problem the tell me > is that the applications need to sync all the buffers to disk just > before snap is taken to insure data integrity. AFAIK, no applications > support this functionality. My question to our LVM hackers was: Does the > VFS layer do something like this, or even kflushd? And if so, would it > be possible to have LVM call the appropriate IOCTLs to facilitate > telling the apps "FLUSH NOW DAMMIT WE WANNA SNAP!@!!!" Short answer: You can't do that. Logn answer: All the apps know is that they have to store/retrieve some stuff from the disk. No application is constantly monitoring the system to see if it should flush, or stop writing or whatever. LVM has to be smarter... > but I'm just an "Idiot Ben" and not qualified for this high-level > thinking :-) We can print you a license... florin -- "If it's not broken, let's fix it till it is." 41A9 2BDE 8E11 F1C5 87A6 03EE 34B3 E075 3B90 DFE4 -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 230 bytes Desc: not available Url : http://shadowknight.real-time.com/pipermail/tclug-list/attachments/20011207/d544d64d/attachment.pgp