22.5. Adicionando um DASD
Veja a seguir um exemplo de como adicionar um volume DASD:
Nota
Garanta que o dispositivo esteja conectado ou ligado ao sistema Linux se estiver rodando sob a VM.
CP LINK RHEL4X 4B2E 4B2E MR DASD 4B2E LINKED R/W
Use o comando
cd para ir ao diretório /sys/ que representa aquele volume:
# cd /sys/bus/ccw/drivers/dasd-eckd/0.0.4b2e/ # ls -l total 0 -r--r--r-- 1 root root 4096 Aug 25 17:04 availability -rw-r--r-- 1 root root 4096 Aug 25 17:04 cmb_enable -r--r--r-- 1 root root 4096 Aug 25 17:04 cutype -rw-r--r-- 1 root root 4096 Aug 25 17:04 detach_state -r--r--r-- 1 root root 4096 Aug 25 17:04 devtype -r--r--r-- 1 root root 4096 Aug 25 17:04 discipline -rw-r--r-- 1 root root 4096 Aug 25 17:04 online -rw-r--r-- 1 root root 4096 Aug 25 17:04 readonly -rw-r--r-- 1 root root 4096 Aug 25 17:04 use_diag
Em seguida, verifique se este já está online:
# cat online 0
Se não estiver online, submeta o seguinte comando para trazê-lo online:
# echo 1 > online # cat online 1
Verifique qual nó do dispositivo de bloco está sendo acessado:
# ls -l total 0 -r--r--r-- 1 root root 4096 Aug 25 17:04 availability lrwxrwxrwx 1 root root 0 Aug 25 17:07 block -> ../../../../block/dasdb -rw-r--r-- 1 root root 4096 Aug 25 17:04 cmb_enable -r--r--r-- 1 root root 4096 Aug 25 17:04 cutype -rw-r--r-- 1 root root 4096 Aug 25 17:04 detach_state -r--r--r-- 1 root root 4096 Aug 25 17:04 devtype -r--r--r-- 1 root root 4096 Aug 25 17:04 discipline -rw-r--r-- 1 root root 0 Aug 25 17:04 online -rw-r--r-- 1 root root 4096 Aug 25 17:04 readonly -rw-r--r-- 1 root root 4096 Aug 25 17:04 use_diag
Conforme exibido neste exemplo, o dispositivo 4B2E está sendo acessado como
/dev/dasdb.
Use o comando
cd para retornar ao diretório /root e formatar o dispositivo:
# cd # dasdfmt -b 4096 -d cdl -f /dev/dasdb -l LX4B2E -p -y cyl 97 of 3338 |#----------------------------------------------| 2%
Quando a barra de progresso atingir o final e a formatação estiver completa, use
fdasd para particionar o dispositivo:
# fdasd -a /dev/dasdb auto-creating one partition for the whole disk... writing volume label... writing VTOC... checking ! wrote NATIVE! rereading partition table...
Em seguida, crie um sistema de arquivos na nova partição:
# mke2fs -j /dev/dasdb1
mke2fs 1.35 (28-Feb-2004)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
300960 inodes, 600816 blocks
30040 blocks (5.00%) reserved for the super user
First data block=0
19 block groups
32768 blocks per group, 32768 fragments per group
15840 inodes per group
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912
Writing inode tables: done
Creating journal (8192 blocks): done
Writing superblocks and filesystem accounting information: done
This filesystem will be automatically checked every 39 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.
Monte o novo sistema de arquivos:
# mount /dev/dasdb1 /opt # mount /dev/dasda1 on / type ext3 (rw) none on /proc type proc (rw) none on /sys type sysfs (rw) none on /dev/pts type devpts (rw,gid=5,mode=620) none on /dev/shm type tmpfs (rw) /dev/dasdb1 on /opt type ext3 (rw)
Adicione uma entrada ao
/etc/fstab para que o sistema de arquivo seja montado no momento da IPL:
# vi /etc/fstab # cat /etc/fstab LABEL=/ / ext3 defaults 1 1 none /dev/pts devpts gid=5,mode=620 0 0 none /dev/shm tmpfs defaults 0 0 none /proc proc defaults 0 0 none /sys sysfs defaults 0 0 /dev/dasdb1 /opt ext3 defaults 1 2
Adicione o dispositivo à linha da opção dasd_mod em
/etc/modprobe.conf. Certifique-se de adicionar o novo dispositivo no final da lista. Caso contrário, o mapeamento do device number : devnode e os sistemas de arquivos não estarão nos dispositivos que costumavam estar.
# vi /etc/modprobe.conf # cat /etc/modprobe.conf alias eth0 qeth options dasd_mod dasd=201,4B2E
Re-execute
mkinitrd para obter as alterações do modprobe.conf para que o dispositivo esteja online e montável após a próxima IPL:
Note that the example below has been modified slightly for readability and for printing purposes. Each line that ends with "(elf64-s390)" should be treated as one line with no spaces, such as
/tmp/initrd.AR1182/lib/dasd_mod.ko(elf64-s390).
# cd /boot # mv initrd-2.6.7-1.451.2.3.img initrd-2.6.7-1.451.2.3.img.old # mkinitrd -v 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 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 Using loopback device /dev/loop0 /sbin/nash -> /tmp/initrd.AR1182/bin/nash /sbin/insmod.static -> /tmp/initrd.AR1182/bin/insmod copy from /lib/modules/2.6.7-1.451.2.3/./kernel/drivers/s390/block/dasd_mod.ko (elf64-s390) to /tmp/initrd.AR1182/lib/dasd_mod.ko(elf64-s390) copy from /lib/modules/2.6.7-1.451.2.3/./kernel/drivers/s390/block/dasd_eckd_mod.ko (elf64-s390) to /tmp/initrd.AR1182/lib/dasd_eckd_mod.ko (elf64-s390) copy from /lib/modules/2.6.7-1.451.2.3/./kernel/drivers/s390/block/dasd_fba_mod.ko (elf64-s390) to /tmp/initrd.AR1182/lib/dasd_fba_mod.ko (elf64-s390) copy from /lib/modules/2.6.7-1.451.2.3/./kernel/fs/jbd/jbd.ko(elf64-s390) to /tmp/initrd.AR1182/lib/jbd.ko(elf64-s390) copy from /lib/modules/2.6.7-1.451.2.3/./kernel/fs/ext3/ext3.ko(elf64-s390) to /tmp/initrd.AR1182/lib/ext3.ko(elf64-s390) 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
Execute
zipl para salvar as alteracões do initrd para a próxima IPL:
# 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.
