環境介紹：kFreeBSD(與FreeBSD幾乎一樣)
Hardisk:建立兩個slice, 各自再兩個label
da0
da0s1
da0s1a / ufs2
da0s1b swap
da0s2
da0s2d /home
da0s2e /usr
mapping 到 linux kernel
da0 –> sda
da0s1 –> sda1 <bsd: sda5 sda6> // 暫時想像成延伸分割區吧
da0s1a / ufs2 –> sda5
da0s1b swap –> sda6
da0s2 –> sda2 <bsd: sda7 sda8>
da0s2d /home –> sda7
da0s2e /usr –> sda8
先用 Clonezilla 開機，進入shell模式，手動下指令：
raw backup:
dd if=/dev/sda of=mbr.dd bs=512 count=1
dd if=/dev/sda1 of=slice1-table.dd bs=512 count=16
dd if=/dev/sda2 of=slice2-table.dd bs=512 count=16
partclone.ufs -d -c -s /dev/sda5 -o sda5.ptl.img
partclone.ufs -d -c -s /dev/sda7 -o sda7.ptl.img
partclone.ufs -d -c -s /dev/sda8 -o sda8.ptl.img
restore:
dd if=mbr.dd of=/dev/sda
dd if=slice1-table.dd of=/dev/sda1
dd if=slice2-table.dd of=/dev/sda2
partclone.ufs -d -r -s sda5.ptl.img -o /dev/sda5
partclone.ufs -d -r -s sda7.ptl.img -o /dev/sda7
partclone.ufs -d -r -s sda8.ptl.img -o /dev/sda8
直接pipe資料到新的硬碟:
dd if=/dev/sda of=/dev/sdb bs=512 count=1
partprobe /dev/sdb
dd if=/dev/sda1 of=/dev/sdb1 bs=512 count=16
dd if=/dev/sda2 of=/dev/sdb2 bs=512 count=16
reboot
partclone.ufs -d -b -s /dev/sda5 -o /dev/sdb5
partclone.ufs -d -b -s /dev/sda7 -o /dev/sdb7
partclone.ufs -d -b -s /dev/sda8 -o /dev/sdb8
remove sda, update sdb to first hard disk
boot…
other notes:
* 可以考慮備份硬碟前 0-62 這區段的sector, 雖然不確定是做什麼的？
* BSD建立partition 一律在尾端保留約 2678 個 sector，是否要備份？
* 為什麼slice 是 sda1的前16個sector
http://fuse4bsd.creo.hu/localcgi/man-cgi.cgi?bsdlabel+8
The offset of the start of the partition from the beginning of
the drive in sectors, or * to have bsdlabel calculate the correct
offset to use (the end of the previous partition plus one, ignor-
ing partition `c’). For partition `c’, * will be interpreted as
an offset of 0. The first partition should start at offset 16,
because the first 16 sectors are reserved for metadata.
* mount ufs2
mount -r -t ufs -o ufstype=ufs2 /dev/sda5 /mnt
* 判斷UFS partition
debian:~# dmesg | grep hda
[ 3.440093] hda: VMware Virtual IDE Hard Drive, ATA DISK drive
[ 4.112099] hda: host max PIO4 wanted PIO255(auto-tune) selected PIO4
[ 4.112207] hda: UDMA/33 mode selected
[ 5.208450] hda: max request size: 128KiB
[ 5.208654] hda: 16777216 sectors (8589 MB) w/32KiB Cache, CHS=17753/15/63
[ 5.208858] hda: hda1
[ 5.229445] hda1: <bsd: hda5 hda6 >
————— check hda —————
debian:~# disktype /dev/hda
— /dev/hda
Block device, size 8 GiB (8589934592 bytes)
DOS/MBR partition map
Partition 1: 8.000 GiB (8589579264 bytes, 16776522 sectors from 63, bootable)
Type 0xA5 (FreeBSD)
FreeBSD boot loader (i386 boot1 at sector 0)
BSD disklabel (at sector 1), 8 partitions
Partition a: 7.500 GiB (8052708352 bytes, 15727946 sectors from 1048639)
Type 7 (4.2BSD fast file system)
UFS2 file system, 64 KiB offset, little-endian
Last mounted at “/”
Partition b: 512 MiB (536870912 bytes, 1048576 sectors from 63)
Type 1 (swap)
Includes the disklabel and boot code
UFS2 file system, 64 KiB offset, little-endian
Last mounted at “/”
Partition c: 8.000 GiB (8589579264 bytes, 16776522 sectors from 63)
Type 0 (Unused)
————— check hda5 —————
debian:~# disktype /dev/hda5
— /dev/hda5
Block device, size 7.500 GiB (8052708352 bytes)
UFS2 file system, 64 KiB offset, little-endian
Last mounted at “/”
