On Fri, 10 Dec 2010 15:36:01 -0700 "Patrick H." <linux-raid@xxxxxxxxxxxx> wrote: > Sent: Fri Dec 10 2010 14:58:59 GMT-0700 (Mountain Standard Time) > From: Neil Brown <neilb@xxxxxxx> > To: Patrick H. <linux-raid@xxxxxxxxxxxx> linux-raid@xxxxxxxxxxxxxxx > Subject: Re: disable creation of md127 > > On Fri, 10 Dec 2010 14:38:30 -0700 "Patrick H." <linux-raid@xxxxxxxxxxxx> > > wrote: > > > > > >> How can I prevent the MD driver from auto-creating md127 on boot? > >> I have a server which is exporting /dev/sdb1 via iSCSI. The remote > >> client for this device is using it in a raid device so it has raid > >> metadata on it. However because of this, when the target server boots > >> up, the md driver shoves it into md127. And because of this, the iSCSI > >> target daemon (tgtd) wont export the device as its now part of a raid > >> device. > >> The partition type is 0x83, not 0xfd. > >> > >> RHEL6 2.6.32-71 > >> > > > > The md driver isn't auto-creating this. > > mdadm is being run and being asked to create this, possibly implicitly. > > > > Exactly how you stop this from happening depends on where it is an initrd > > script or a boot script that is doing it, and which version of mdadm you have. > > > > If you have 3.0 or later, then putting > > AUTO -all > > > > in mdadm.conf might be enough. > > If you have a 2.x, you probably need to tell the init script not to run > > mdadm, maybe edit the script, maybe set some default variable. I know little > > about RHEL and so cannot suggest specifics. > > > > NeilBrown > > > > -- > > To unsubscribe from this list: send the line "unsubscribe linux-raid" in > > the body of a message to majordomo@xxxxxxxxxxxxxxx > > More majordomo info at http://vger.kernel.org/majordomo-info.html > > > Youre right. I removed every single md-related init script so I didnt > think mdadm was doing it. But apparently I forgot about udev. I replaced > mdadm with a script to dump out a bunch of info and found that udev is > calling `mdadm -I /dev/sdb1`. Any idea where this might be configured > at? I did a recursive grep for 'mdadm' in the entire /etc and found > nothing but init scripts and a little selinux stuff (nothing in /etc/udev). /lib/udev/rules.d/64-...something You can disable this by creating an empty file with the same name in /etc/udev/rules.d ... which might be kinder to the package management system. NeilBrown -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
