Date: Mon, 13 Sep 2004 12:21:10 -0500 From: Dan Nelson <dnelson@allantgroup.com> To: Jesse Guardiani <jesse@wingnet.net> Cc: freebsd-questions@freebsd.org Subject: Re: mkfifo - disk backed? Message-ID: <20040913172109.GB18290@dan.emsphone.com> In-Reply-To: <ci4c9u$vrr$1@sea.gmane.org> References: <ci4c9u$vrr$1@sea.gmane.org>
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In the last episode (Sep 13), Jesse Guardiani said: > Just curious: Are FIFOs made by mkfifo disk backed? Do they go away > between reboots? Do they lose data between reboots? Fifos are just pipes with a visible physical name. The fifo itself stays in the filesystem after a reboot, but since all the data passing is handled in the kernel, a reboot will blow away any data (including the processes reading/writing that data :). If your FIFO is on an NFS mount, a reboot of the remote server will have no effect on the client's use of the fifo (since all fifo traffic is handled locally on the client). -- Dan Nelson dnelson@allantgroup.com
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