Mounting USB ext3 partitions on OpenSolaris
[Update] It looks like this only really applies to USB flash drives. When I mounted my actual backup drive, it showed up in prtpart. This post was written using the root drive on my old backup server, which is a SanDisk Cruzer flash drive.
Now that I finally got my mini thumper up and online, it’s time pull everything from my previous backup drive. The problem is that it’s a USB drive with an ext3 partition on it. I did a little googling and found several references to using the belenix FSWpart and FSWfsmisc packages, with this one being the most helpful.
My only problem was that when I ran prtpart, it only showed disk information for my non-USB drives. I could see that the drive was recognized by looking in syslog:
root@silo:~# cat /var/adm/messages Mar 14 12:03:36 silo usba: [ID 349649 kern.info] SanDisk U3 Cruzer Micro 0774920CB281D664 Mar 14 12:03:36 silo genunix: [ID 936769 kern.info] scsa2usb0 is /pci@0,0/pci1462,7418@1d,3/storage@1 ...
So, I dug around a bit, trying to look for various names in /dev/rdsk that were in the above output when I stumbled across the fact that everything in /dev/rdsk is a symlink. So I did a quick grep:
root@silo:~# ls -al /dev/rdsk/ | grep /pci@0,0/pci1462,7418@1d,3/storage@1 lrwxrwxrwx 1 root root 64 2010-03-14 12:03 c11t0d0p0 -> ../../devices/pci@0,0/pci1462,7418@1d,3/storage@1/disk@0,0:q,raw lrwxrwxrwx 1 root root 64 2010-03-14 12:03 c11t0d0p1 -> ../../devices/pci@0,0/pci1462,7418@1d,3/storage@1/disk@0,0:r,raw ....
Aha! Now I know what the device name is, so I can use prtpart to figure out what to mount:
root@silo:~# prtpart /dev/rdsk/c11t0d0p0 -ldevs Fdisk information for device /dev/rdsk/c11t0d0p0 ** NOTE ** /dev/dsk/c11t0d0p0 - Physical device referring to entire physical disk /dev/dsk/c11t0d0p1 - p4 - Physical devices referring to the 4 primary partitions /dev/dsk/c11t0d0p5 ... - Virtual devices referring to logical partitions Virtual device names can be used to access EXT2 and NTFS on logical partitions /dev/dsk/c11t0d0p1 Linux native
And mount it:
root@silo:~# mkdir /mnt/linux root@silo:~# mount -F ext2fs /dev/dsk/c11t0d0p1 /mnt/linux root@silo:~# ls /mnt/linux/ bin dev etc home initrd lib lost+found media mnt proc root sbin sys tmp usr var www