Show Table of Contents
22.2. Using the zFCP Driver
During the initial installation, you are prompted to enter SCSI/FCP information. If this information is entered, it creates the
/etc/zfcp.conf file which contains your SCSI configuration. It also adds the line alias scsi_hostadapter zFCP to /etc/modprobe.conf. This loads the required zFCP modules.
# cat /etc/zfcp.conf 0.0.010a 0x01 0x5005076300c18154 0x00 0x5719000000000000 # cat /etc/modprobe.conf alias eth0 qeth options dasd_mod dasd=201,4b2e alias scsi_hostadapter zfcp
If no SCSI devices were defined during the initial installation, the following example demonstrates how to add one manually:
# cd /lib/modules/2.6.7-1.451.2.3/kernel/drivers/s390/scsi # modprobe zfcp # lsmod Module Size Used by zfcp 221460 0 [permanent] autofs4 39944 0 qeth 166288 0 qdio 60240 3 zfcp,qeth ccwgroup 25344 1 qeth ipt_REJECT 23552 1 ipt_state 18944 5 ip_conntrack 57904 1 ipt_state iptable_filter 19712 1 ip_tables 37888 3 ipt_REJECT,ipt_state,iptable_filter sd_mod 39688 0 scsi_mod 182904 2 zfcp,sd_mod dm_mod 86408 0 ext3 179056 2 jbd 92720 1 ext3 dasd_fba_mod 25344 0 dasd_eckd_mod 77056 4 dasd_mod 85328 6 dasd_fba_mod,dasd_eckd_mod # cd /sys/bus/ccw/drivers/zfcp/0.0.010a # echo 1 > online # cat online 1 # echo 0x5005076300c18154 > /sys/bus/ccw/drivers/zfcp/0.0.010a/port_add # ls 0x5005076300c18154 failed lic_version s_id availability fc_link_speed nameserver status card_version fc_service_class online wwnn cmb_enable fc_topology port_add wwpn cutype hardware_version port_remove detach_state host2 scsi_host_no devtype in_recovery serial_number # cd /sys/bus/ccw/drivers/zfcp/0.0.010a/0x5005076300c18154 # echo 0x5719000000000000 > unit_add # ls 0x5719000000000000 d_id in_recovery status unit_remove detach_state failed scsi_id unit_add wwnn # cat /sys/bus/ccw/drivers/zfcp/0.0.010a/scsi_host_no 0x0 # cat /sys/bus/ccw/drivers/zfcp/0.0.010a/0x5005076300c18154/scsi_id 0x1 # cat \ /sys/bus/ccw/drivers/zfcp/0.0.010a/0x5005076300c18154/0x5719000000000000/scsi_lun 0x0 # cat /sys/bus/scsi/devices/0\:0\:1\:0/hba_id 0.0.010a # cat /sys/bus/scsi/devices/0\:0\:1\:0/wwpn 0x5005076300c18154 # cat /sys/bus/scsi/devices/0\:0\:1\:0/fcp_lun 0x5719000000000000 # cat /sys/bus/scsi/devices/0\:0\:1\:0/block/dev 8:0 # cat /sys/bus/scsi/devices/0\:0\:1\:0/block/sda1/dev 8:1 # cat /proc/scsi/scsi Attached devices: Host: scsi2 Channel: 00 Id: 01 Lun: 00 Vendor: IBM Model: 2105F20 Rev: .123 Type: Direct-Access ANSI SCSI revision: 03 # fdisk /dev/sda # mke2fs -j /dev/sda1 # mount /dev/sda1 /mnt # df Filesystem 1K-blocks Used Available Use% Mounted on /dev/dasda1 2344224 1427948 797196 65% / none 511652 0 511652 0% /dev/shm /dev/dasdb1 2365444 32828 2212456 2% /opt /dev/sda1 3844088 32828 3615988 1% /mnt # cd /boot # mv initrd-2.6.7-1.451.2.3.img initrd-2.6.7-1.451.2.3.img.orig # mkinitrd -v --with=scsi_mod --with=zfcp --with=sd_mod initrd-2.6.7-1.451.2.3.img 2.6.7-1.451.2.3 Looking for deps of module ide-disk Looking for deps of module dasd_mod Looking for deps of module dasd_eckd_mod dasd_mod Looking for deps of module dasd_mod Looking for deps of module dasd_fba_mod dasd_mod Looking for deps of module dasd_mod Looking for deps of module ext3 jbd Looking for deps of module jbd Looking for deps of module scsi_mod Looking for deps of module zfcp qdio scsi_mod Looking for deps of module qdio Looking for deps of module scsi_mod Looking for deps of module sd_mod scsi_mod Looking for deps of module scsi_mod Using modules: ./kernel/drivers/s390/block/dasd_mod.ko ./kernel/drivers/s390/block/dasd_eckd_mod.ko ./kernel/drivers/s390/block/dasd_fba_mod.ko ./kernel/fs/jbd/jbd.ko ./kernel/fs/ext3/ext3.ko ./kernel/drivers/scsi/scsi_mod.ko ./kernel/drivers/s390/cio/qdio.ko ./kernel/drivers/s390/scsi/zfcp.ko ./kernel/drivers/scsi/sd_mod.ko Using loopback device /dev/loop0 /sbin/nash -> /tmp/initrd.cT1534/bin/nash /sbin/insmod.static -> /tmp/initrd.cT1534/bin/insmod `/lib/modules/2.6.7-1.451.2.3/./kernel/drivers/s390/block/dasd_mod.ko'-> `/tmp/initrd.cT1534/lib/dasd_mod.ko' `/lib/modules/2.6.7-1.451.2.3/./kernel/drivers/s390/block/dasd_eckd_mod.ko' -> `/tmp/initrd.cT1534/lib/dasd_eckd_mod.ko' `/lib/modules/2.6.7-1.451.2.3/./kernel/drivers/s390/block/dasd_fba_mod.ko' -> `/tmp/initrd.cT1534/lib/dasd_fba_mod.ko' `/lib/modules/2.6.7-1.451.2.3/./kernel/fs/jbd/jbd.ko' -> `/tmp/initrd.cT1534/lib/jbd.ko' `/lib/modules/2.6.7-1.451.2.3/./kernel/fs/ext3/ext3.ko' -> `/tmp/initrd.cT1534/lib/ext3.ko' `/lib/modules/2.6.7-1.451.2.3/./kernel/drivers/scsi/scsi_mod.ko' -> `/tmp/initrd.cT1534/lib/scsi_mod.ko' `/lib/modules/2.6.7-1.451.2.3/./kernel/drivers/s390/cio/qdio.ko' -> `/tmp/initrd.cT1534/lib/qdio.ko' `/lib/modules/2.6.7-1.451.2.3/./kernel/drivers/s390/scsi/zfcp.ko' -> `/tmp/initrd.cT1534/lib/zfcp.ko' `/lib/modules/2.6.7-1.451.2.3/./kernel/drivers/scsi/sd_mod.ko' -> `/tmp/initrd.cT1534/lib/sd_mod.ko' ... Loading module dasd_mod with options dasd=201,4b2e Loading module dasd_eckd_mod Loading module dasd_fba_mod Loading module jbd Loading module ext3 Loading module scsi_mod Loading module qdio Loading module zfcp Loading module sd_mod # zipl -V Using config file '/etc/zipl.conf' Target device information Device..........................: 5e:00 Partition.......................: 5e:01 Device name.....................: dasda DASD device number..............: 0201 Type............................: disk partition Disk layout.....................: ECKD/compatible disk layout Geometry - heads................: 15 Geometry - sectors..............: 12 Geometry - cylinders............: 3308 Geometry - start................: 24 File system block size..........: 4096 Physical block size.............: 4096 Device size in physical blocks..: 595416 Building bootmap '/boot//bootmap' Building menu 'rh-automatic-menu' Adding #1: IPL section 'linux' (default) kernel image......: /boot/vmlinuz-2.6.7-1.451.2.3 at 0x10000 kernel parmline...: 'root=LABEL=/' at 0x1000 initial ramdisk...: /boot/initrd-2.6.7-1.451.2.3.img at 0x800000 Preparing boot device: dasda (0201). Preparing boot menu Interactive prompt......: disabled Menu timeout............: disabled Default configuration...: 'linux' Syncing disks... Done.
Where did the comment section go?
Red Hat's documentation publication system recently went through an upgrade to enable speedier, more mobile-friendly content. We decided to re-evaluate our commenting platform to ensure that it meets your expectations and serves as an optimal feedback mechanism. During this redesign, we invite your input on providing feedback on Red Hat documentation via the discussion platform.