Some time ago I had FreeBSD disk from which I needed to copy some data. It was system disk from our old product server. Current server runs the 64 bit version of CentOS 5.5, so there was no straight method to just plug & mount it without additional configuration.
Google suggested me, that disks from BSD systems are UFS and to use it I need kernel ufs module, so I’ve typed into terminal:
linux: ~ # modinfo ufs modinfo: could not find module ufs linux: ~ # cat /proc/filesystems #this didn't gave any results either.
I’ve installed DMKS driver for UFS from here:
linux: ~ # wget http://people.centos.org/tru/dkms/RPMS/dkms-ufs-2.6.18_8.1.8 .el5-3.c5.noarch.rpm linux: ~ # rpm -i dkms-ufs-2.6.18_8.1.8.el5-3.c5.noarch.rpm linux: ~ # rpm -qa|grep dkms dkms-22.214.171.124-1.el5.rf dkms-ufs-2.6.18_8.1.8.el5-3.c5
Next I enabled and loaded module in kernel:
linux: ~ # cat /boot/config-$(uname -r)|grep UFS ... # CONFIG_SYSV_FS is not set ... linux: ~ # vi /boot/config-$(uname -r) # uncomment # # CONFIG_SYSV_FS is not set # to make it look like: # CONFIG_UFS_FS=m #m means 'module' linux: ~ # modprobe ufs linux: ~ # lsmod|grep ufs ufs 987862 1
Having support for UFS I was finally able to mount disk:
linux: ~ # fdisk -l ... Disk /dev/sdc: 1000.2 GB, 1000204886016 bytes 16 heads, 63 sectors/track, 1938021 cylinders Units = cylinders of 1008 * 512 = 516096 bytes Device Boot Start End Blocks Id System /dev/sdc1 * 1 1938021 976762552+ a5 FreeBSD linux: ~ # sfdisk -d /dev/sdc # partition table of /dev/sdc unit: sectors /dev/sdc1 : start= 63, size=1953525105, Id=a5, bootable /dev/sdc2 : start= 0, size= 0, Id= 0 /dev/sdc3 : start= 0, size= 0, Id= 0 /dev/sdc4 : start= 0, size= 0, Id= 0 /dev/sdc5 : start= 63, size= 8388608 /dev/sdc6 : start= 8388671, size= 8388608 /dev/sdc7 : start= 16777279, size= 37322752 /dev/sdc8 : start= 54100031, size= 8388608 /dev/sdc9 : start= 62488639, size=1891036529
Partitions /dev/sdc[1-9] are the UFS partitions as they are visible is FreeBSD. In my case /dev/sda9 is /usr and that’s the one I needed.
linux: ~ # mkdir /media/bsd linux: ~ # mount -r -t ufs -o ufstype=5xbsd /dev/sdc9 /media/bsd/
I hope that it will be useful for someone.