2006隨手札記

LAB %create a new filesystem #fdisk -l /dev/sdb Disk /dev/sdb: 3253 MB, 3253469184 bytes 101 heads, 62 sectors/track, 1014 cylinders Units = cylinders of 6262 * 512 = 3206144 bytes Device Boot Start End Blocks Id System /dev/sdb1 1 32 100161 82 Linux swap / Solaris /dev/sdb2 33 64 100192 fd Linux raid autodetect /dev/sdb3 65 96 100192 fd Linux raid autodetect /dev/sdb4 97 1014 2874258 5 Extended /dev/sdb5 97 128 100161 fd Linux raid autodetect /dev/sdb6 129 160 100161 fd Linux raid autodetect /dev/sdb7 161 192 100161 fd Linux raid autodetect #fdisk /dev/sdb [root@server1 ~]# fdisk /dev/sdb Command (m for help): n First cylinder (193-1014, default 193): Using default value 193 Last cylinder or +size or +sizeM or +sizeK (193-1014, default 1014): +100M Command (m for help): p Disk /dev/sdb: 3253 MB, 3253469184 bytes 101 heads, 62 sectors/track, 1014 cylinders Units = cylinders of 6262 * 512 = 3206144 bytes Device Boot Start End Blocks Id System /dev/sdb1 1 32 100161 82 Linux swap / Solaris /dev/sdb2 33 64 100192 fd Linux raid autodetect /dev/sdb3 65 96 100192 fd Linux raid autodetect /dev/sdb4 97 1014 2874258 5 Extended /dev/sdb5 97 128 100161 fd Linux raid autodetect /dev/sdb6 129 160 100161 fd Linux raid autodetect /dev/sdb7 161 192 100161 fd Linux raid autodetect /dev/sdb8 193 224 100161 83 Linux Command (m for help): w The partition table has been altered! Calling ioctl() to re-read partition table. Syncing disks. [root@server1 ~]# cat /proc/partitions major minor #blocks name 8 0 78150744 sda 8 1 104391 sda1 8 2 78043770 sda2 253 0 75988992 dm-0 253 1 2031616 dm-1 8 16 3177216 sdb 8 17 100161 sdb1 8 18 100192 sdb2 8 19 100192 sdb3 8 20 1 sdb4 8 21 100161 sdb5 8 22 100161 sdb6 8 23 100161 sdb7 8 24 100161 sdb8 #partprobe #mkfs.ext3 -L opt /dev/sdb8 #vi /etc/fstab LABLE=opt /opt ext3 defaults 0 0 #mount -a %create swap partitions #fdisk /dev/sdb Command (m for help): n First cylinder (193-1014, default 193): Using default value 193 Last cylinder or +size or +sizeM or +sizeK (193-1014, default 1014): +100M Command (m for help): t Partition number (1-8): 8 Hex code (type L to list codes): 82 Changed system type of partition 8 to 82 (Linux swap / Solaris) Command (m for help): p Disk /dev/sdb: 3253 MB, 3253469184 bytes 101 heads, 62 sectors/track, 1014 cylinders Units = cylinders of 6262 * 512 = 3206144 bytes Device Boot Start End Blocks Id System /dev/sdb1 1 32 100161 82 Linux swap / Solaris /dev/sdb2 33 64 100192 fd Linux raid autodetect /dev/sdb3 65 96 100192 fd Linux raid autodetect /dev/sdb4 97 1014 2874258 5 Extended /dev/sdb5 97 128 100161 fd Linux raid autodetect /dev/sdb6 129 160 100161 fd Linux raid autodetect /dev/sdb7 161 192 100161 fd Linux raid autodetect /dev/sdb8 193 224 100161 82 Linux swap / Solaris Command (m for help): w The partition table has been altered! Calling ioctl() to re-read partition table. Syncing disks. [root@server1 ~]# cat /proc/partitions major minor #blocks name 8 0 78150744 sda 8 1 104391 sda1 8 2 78043770 sda2 253 0 75988992 dm-0 253 1 2031616 dm-1 8 16 3177216 sdb 8 17 100161 sdb1 8 18 100192 sdb2 8 19 100192 sdb3 8 20 1 sdb4 8 21 100161 sdb5 8 22 100161 sdb6 8 23 100161 sdb7 8 24 100161 sdb8 #partprobe #mkswap /dev/sdb8 -L newswap [root@server1 ~]# mkswap /dev/sdb8 -L newswap Setting up swapspace version 1, size = 102559 kB LABEL=newswap, no uuid #vi /etc/fstab LABEL=newswap swap swap defults 0 0 #swapon -a #swapon -s [root@server1 ~]# swapon -s Filename Type Size Used Priority /dev/mapper/VolGroup00-LogVol01 partition 2031608 0 -1 /dev/sdb8 partition 100152 0 -2