On Thu, Feb 15, 2007 at 02:27:58PM -0500, Jeff Garzik wrote: > >So that means that the FC5 system is not actually on RAID? Even though > >it seems so? (using /dev/dm-* for filesystem volumes) > > > ># lspci | grep -i sata > >03:05.0 RAID bus controller: Silicon Image, Inc. SiI 3114 > >[SATALink/SATARaid] Serial ATA Controller (rev 02) > ># df -m > >Filesystem 1M-blocks Used Available Use% Mounted on > >/dev/dm-6 125931 2999 116432 3% / > >/dev/dm-1 99 13 81 14% /boot > >tmpfs 1012 0 1012 0% /dev/shm > >/dev/dm-2 9917 151 9254 2% /tmp > >/dev/dm-3 9917 237 9168 3% /var > ># lsmod | grep ata > >sata_sil 13897 2 > >libata 58321 1 sata_sil > >scsi_mod 129641 3 sg,libata,sd_mod > ># cat /etc/modprobe.conf | tail -n 1 > >alias scsi_hostadapter sata_sil > > > >So in fact /dev/dm-* are just on one disk each (not RAID1), or what is > >going on here? > The's dmraid providing /software/ RAID as noted in > http://linux-ata.org/faq-sata-raid.html#dmraid No, that's not a correct assertion. We can only say that device-mapper is being used somehow. It could be LVM, EVMS2, dmraid, or a few other things. Use dmsetup (info,ls,status,targets) as well as the sysfs block slave entries on dm-* to figure it out from scratch. (or at a higher level, try the LVM tools etc). -- Robin Hugh Johnson Gentoo Linux Developer E-Mail : robbat2@xxxxxxxxxx GnuPG FP : 11AC BA4F 4778 E3F6 E4ED F38E B27B 944E 3488 4E85
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