Date: Fri, 26 Aug 2005 13:47:31 -0700 From: Brooks Davis <brooks@one-eyed-alien.net> To: Jan Pechanec <jp@devnull.cz> Cc: freebsd-stable@freebsd.org Subject: Re: how to find out the boot device Message-ID: <20050826204731.GA14701@odin.ac.hmc.edu> In-Reply-To: <20050826223000.O51719@axxem.hide.subzone.cz> References: <20050826223000.O51719@axxem.hide.subzone.cz>
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[-- Attachment #1 --] On Fri, Aug 26, 2005 at 10:41:47PM +0200, Jan Pechanec wrote: > > hello guys, > > during the rc.d phase, I need to find out in a shell script from > which disk the system has booted up. > > - I cannot use kern.rootdev because my root fs is a memory disk > - I cannot use kern.disks because the first disk there doesn't > necessarily mean the boot disk (eg. my home box says 'cd0 ad0' for that) > > - I could use 'atacontrol list' or 'camcontrol devlist' because I > always boot from the 1st disk, but if I have both types of disks then I have > 1st ATA disk and 1st SCSI disk and again unable to recognize which one is > the one I need. > > any ideas, please? Use glabel and label the disk or file systems during deployment. Then you'll have /dev/label/<disk label> or /dev/ufs/<label> entries. Once that's done, it won't matter where the drive moves or what kind of bus you use. -- Brooks -- Any statement of the form "X is the one, true Y" is FALSE. PGP fingerprint 655D 519C 26A7 82E7 2529 9BF0 5D8E 8BE9 F238 1AD4 [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.1 (GNU/Linux) iD8DBQFDD3/iXY6L6fI4GtQRAntMAJ9j1QxxuLZtHRt+WXMOTIQA0+n7AQCdEkKL 7/s82y3dapKelo97VQRVe0A= =U6U1 -----END PGP SIGNATURE-----
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