在功能選單試看看備份的選項
============ Please Enter Number: 3 We use 'nc' for backup, for example To Server (192.168.1.1): nc -l -p 8888 > backup.dd From Host (192.168.1.5): dd if=/dev/sda bs=1M | nc 192.168.1.1 8888 type 'nc -l -p 8888 > backup.dd' on server, Enter when ready: Enter backup server IP: Enter backup device (default:/dev/sda): Wait about 16 minutes, file size should be 8,027,897,856 Start Backup Sat Apr DD hh:mm:ss CST 2014... nc: can't connect to remote host (0.0.34.184): Invalid argument
因為開機碟空間不大所以吃不下
試著備份一點東東…不過沒啥保留意義了
dd if=/dev/sdb1 of=/mnt/sda1/ sdb1.dd 617101+0 records in 617101+0 records out 315955712 bytes (301.3MB) copied, 86.870065 seconds, 3.5MB/s
把原有的分割區全部掛起來看看
df -h Filesystem Size Used Available Use% Mounted on /dev/sda1 1.9G 174.3M 1.7G 9% /mnt/sda1 /dev/sdb1 291.9M 212.7M 73.2M 74% /mnt/sdb1 /dev/sdb2 291.9M 121.6M 164.3M 43% /mnt/sdb2 /dev/sdb4 866.4M 21.2M 827.6M 3% /mnt/sdb3 /dev/sdb3 6.0G 4.7G 1.3G 79% /mnt/sdb4
- 準備把 DOM 的空間砍掉重練（應該要先全部 umount）
這次目標是朝這方向做 http://lyhpcha.pixnet.net/blog/post/88474418
再看最後一眼…
fdisk -l Disk /dev/sdb: 8027 MB, 8027897856 bytes 160 heads, 19 sectors/track, 5157 cylinders Units = cylinders of 3040 * 512 = 1556480 bytes Device Boot Start End Blocks Id System /dev/sdb1 1 203 308550+ 83 Linux /dev/sdb2 204 406 308560 83 Linux /dev/sdb3 407 4546 6292800 83 Linux /dev/sdb4 4547 5139 901360 83 Linux Disk /dev/sda: 2059 MB, 2059403264 bytes 96 heads, 37 sectors/track, 1132 cylinders Units = cylinders of 3552 * 512 = 1818624 bytes Device Boot Start End Blocks Id System /dev/sda1 1 1133 2011078+ 6 FAT16
再看一下 fdisk 工具
fdisk BusyBox v1.21.1 (2013-09-11 14:47:43 CST) multi-call binary. Usage: fdisk [-ul] [-C CYLINDERS] [-H HEADS] [-S SECTORS] [-b SSZ] DISK Change partition table -u Start and End are in sectors (instead of cylinders) -l Show partition table for each DISK, then exit -b 2048 (for certain MO disks) use 2048-byte sectors -C CYLINDERS Set number of cylinders/heads/sectors -H HEADS -S SECTORS
fdisk /dev/sdb1 The number of cylinders for this disk is set to 5157. There is nothing wrong with that, but this is larger than 1024, and could in certain setups cause problems with: 1) software that runs at boot time (e.g., old versions of LILO) 2) booting and partitioning software from other OSs (e.g., DOS FDISK, OS/2 FDISK) Command (m for help): m Command Action a toggle a bootable flag b edit bsd disklabel c toggle the dos compatibility flag d delete a partition l list known partition types n add a new partition o create a new empty DOS partition table p print the partition table q quit without saving changes s create a new empty Sun disklabel t change a partition's system id u change display/entry units v verify the partition table w write table to disk and exit x extra functionality (experts only)
用 d 把後面幾個砍了
再用 n 建立新的分割區
可再參考 http://changcancan.pixnet.net/blog/post/42716197
這次在最後建了個 swap 分割
Command (m for help): p Disk /dev/sdb: 8027 MB, 8027897856 bytes 160 heads, 19 sectors/track, 5157 cylinders Units = cylinders of 3040 * 512 = 1556480 bytes Device Boot Start End Blocks Id System /dev/sdb1 1 203 308550+ 83 Linux /dev/sdb2 204 5002 7294480 83 Linux /dev/sdb3 5003 5157 235600 83 Linux
Command (m for help): t Partition number (1-4): 3 Hex code (type L to list codes): 82 Changed system type of partition 3 to 82 (Linux swap)
Command (m for help): v 18 unallocated sectors
Command (m for help): w The partition table has been altered. Calling ioctl() to re-read partition table fdisk: WARNING: rereading partition table failed, kernel still uses old table: Device or resource busy
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