Thank you for your answer. I can't manage the raid5 to work, here are what what i do : dmraid -s give me : *** Group superset isw_hdaagdcbc --> Subset name : isw_hdaagdcbc_RAID5 size : 1465177344 stride : 128 type : raid5_la status : ok subsets: 0 devs : 4 spares : 0 dmraid -tay give me : isw_hdaagdcbc_RAID5: 0 1465177344 raid45 core 2 131072 nosync raid5_la 1 128 4 -1 /dev/sda 0 /dev/sdb 0 /dev/sdc 0 /dev/sde 0 and dmraid -ay give me : ERROR: device-mapper target type "raid45" not in kernel and the /dev/mapper/ show only the control file. i have try with the from the cvs tree and the current tools. i use the latest kernel with raid456 compiled as modules and loaded. What should i do to make the raid5 work. Thank you very much. > > > > Message du 26/02/08 à 10h00 > > De : "Cetnerowski, Adam" <adam.cetnerowski@xxxxxxxxx> > > A : silentphoebus@xxxxxxxx, "device-mapper development" <dm-devel@xxxxxxxxxx> > > Copie à : > > Objet : RE: RAID5 compatibility. > > > > > > > > > -----Original Message----- > > > From: dm-devel-bounces@xxxxxxxxxx [mailto:dm-devel-bounces@xxxxxxxxxx] > > On > Behalf Of silentphoebus > > > Sent: Monday, February 25, 2008 8:07 PM > > > To: dm-devel@xxxxxxxxxx > > > Subject: RAID5 compatibility. > > > > > > Hi all, > > > i found a lot of informations on the internet for intel software raid5 > > > with ICH controler. > > > So, the best is maybe to ask here. > > > Is it compatible with the dmraid mapper or not ? > > > Thank you for taking time to read. > > > > Hi, > > > > The software RAID 5 does indeed use device mapper. I would like to note > > that at the moment it is in the experimental stage, while we work on > > some of the features. > > > > Adam Cetnerowski > > Intel Technology Poland > > > > -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel