Re: Does Linux sync(2) wait?

From: Pascal Schmidt
Date: Sun Mar 21 2004 - 10:32:03 EST


On Sun, 21 Mar 2004 11:40:08 +0100, you wrote in linux.kernel:
> Looking at 2.4 and 2.6 sources, Linux does appear to wait before returning.
> I'm especially interested if NFS data is sent to the server. (I want to
> be able to take a stable snapshot of a netapp volume.)

No idea about NFS, but sync(1) does wait. When I push 500M out to my
MO drive, the cp operation returns fairly quickly because I usually
have more than 500M free memory. Then I run sync(1), which takes about
20 minutes before it returns.

--
Ciao,
Pascal
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