From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrey Borzenkov Date: Sun, 29 Jan 2006 10:12:18 +0000 Subject: Re: sd_mod load is delayed. Message-Id: <200601291312.19411.arvidjaar@mail.ru> List-Id: References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-hotplug@vger.kernel.org -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Sunday 29 January 2006 12:29, Hai Zaar wrote: > Hi! > > I'm using 2.6.15 + udev 081 + udev rules from here: > http://ftp.jg555.com/udev/udev-cross-lfs.tar.bz2 Relevant modprobe rules > are: # hotplug > ENV{MODALIAS}="?*", RUN+="/sbin/modprobe $env{MODALIAS}" > > # scsi > SUBSYSTEM="scsi_device", ACTION="add", SYSFS{device/type}="1", > SYSFS{device/vendor}="On[sS]tream", RUN+="/sbin/modprobe osst" > SUBSYSTEM="scsi_device", ACTION="add", SYSFS{device/type}="1", > RUN+="/sbin/modprobe st" > SUBSYSTEM="scsi_device", ACTION="add", SYSFS{device/type}="[45]", > RUN+="/sbin/modprobe sr_mod" > SUBSYSTEM="scsi_device", ACTION="add", RUN+="/sbin/modprobe sg" > > Those rules do not handle sd_mod loading, so I've added the following > line from SUSE rules: > SUBSYSTEM="scsi_device", ACTION="add", > SYSFS{device/type}="0|7|14", RUN+="/sbin/modprobe sd_mod" > > I have two storage controllers in my machine: > 1. Intel SATA controller, handled by ata_piix driver. > 2. LSI logic SCSI controller handled by mptlinux driver. > > The situation: > During initramfs stage, if I trigger event only for SATA controller, > then after just 1 second lib_ata and ata_piix modules are loaded > together with sd_mod and friends, and /proc/partitions is populated. > So just after 1-2 seconds I'm able boot from SATA. > > When LSI logic event is triggered - mptlinux module is loaded and > spends about half a minute to scan the bus. > > The problems with, that when I trigger events both for SATA and LSI > logic (like trigger_all_events function does), sd_mod is not get > loaded until _both_ SATA and LSI finish to initialize. > Why sd_mod is not get loaded just right after ata_piix has finished? > As far as I can tell, SCSI subsystem is using scan mutex; so only one HBA can do scanning at a time. Or so it appears. May be LSI is the frst one to kick in. - -andrey -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2 (GNU/Linux) iD8DBQFD3JUDR6LMutpd94wRAskLAJ9zBL3CHW4ovt4vxApZp2cVsiuQRwCfdpRU i+VgPRPUSNiTCOkoCyfrKoM=/SSI -----END PGP SIGNATURE----- ------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://sel.as-us.falkag.net/sel?cmd=lnk&kid3432&bid#0486&dat1642 _______________________________________________ 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