From mboxrd@z Thu Jan 1 00:00:00 1970 From: Kay Sievers Date: Tue, 11 Oct 2005 18:25:31 +0000 Subject: Re: Configuring large numbers of disks Message-Id: <20051011182531.GB20751@vrfy.org> List-Id: References: <1128975292.21643.30.camel@markh1.pdx.osdl.net> In-Reply-To: <1128975292.21643.30.camel@markh1.pdx.osdl.net> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable To: linux-hotplug@vger.kernel.org On Mon, Oct 10, 2005 at 01:14:51PM -0700, Mark Haverkamp wrote: > I have 4000 fibrechannel LUNs connected to my system. There are two > paths to the devices and two ports on the host connected via a switch. > This gives 16000 when probed. All of the devices are being configured > and appear in /sys/block. I have had problems getting all of the > entries in /dev created. I have been able to get udev to create all the > entries in /dev if I recompile udevd to increase the netlink setsockopt > SO_RCVBUF to 16384 * 1024 from the original 1024 * 1024. Did you allow such a big socket buffer? What does: grep . /proc/sys/net/core/* print on that box? > I'd like some advice if that is the best way to go. Or is there some > other way to do this without recompiling? 2.6.13 got new sockopts to set a reasonable limit without making it global with sysctrl: http://www.kernel.org/git/?p=3Dlinux/kernel/git/torvalds/linux-2.6.git;a= =3Dcommit;h=B0573dea1fb32ebc72ffa05980fd840df1d80860 We will probably use this in the next udev release. Anyway, we may need to switch to a reliable transport instead of netlink, if it still causes problems. Thanks, Kay ------------------------------------------------------- This SF.Net email is sponsored by: Power Architecture Resource Center: Free content, downloads, discussions, and more. http://solutions.newsforge.com/ibmarch.tmpl _______________________________________________ Linux-hotplug-devel mailing list http://linux-hotplug.sourceforge.net Linux-hotplug-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-hotplug-devel