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hayalci
Asked: 2010-12-28 08:24:44 +0800 CST

Mounting Solaris UFS partition on Debian(with FreeBSD kernel)

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I have some disks that were being used on a Solaris system. The disks are formatted as UFS. I attached them to a Debian system (with FreeBSD kernel. Debian/kFreeBSD), but I cannot mount them. 

$ mount -t ufs /dev/da2s1 /mnt/diska
mount: /dev/da2s1 : Invalid argument

Also the tunefs.ufs does not work;

$ tunefs.ufs -p /dev/da2s1
tunefs.ufs: /dev/da2s1: could not read superblock to fill out disk

Is there an incompatibility between FreeBSD UFS and Solaris UFS? Is it possible to mount one, under the other OS ?

Note: tunefs.ufs works on the root partition

$ tunefs.ufs -p /dev/da7s2
tunefs.ufs: ACLs: (-a)                                         disabled
tunefs.ufs: MAC multilabel: (-l)                               disabled
tunefs.ufs: soft updates: (-n)                                 disabled
tunefs.ufs: gjournal: (-J)                                     disabled
tunefs.ufs: maximum blocks per file in a cylinder group: (-e)  2048
tunefs.ufs: average file size: (-f)                            16384
tunefs.ufs: average number of files in a directory: (-s)       64
tunefs.ufs: minimum percentage of free space: (-m)             8%
tunefs.ufs: optimization preference: (-o)                      time
tunefs.ufs: volume label: (-L)
debian solaris freebsd ufs

2 Answers

  1. Best Answer

    FreeBSD UFS2 and Solaris UFS, while sharing some original structure have somewhat diverged so I'm unsure freeBSD can mount it. Was your UFS file system properly unmounted ?

    EDIT: Also, if the file system was created on SPARC hardware, it won't be mountable on x86 as the format is architecture dependent.

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  2. Did you halted the solaris system without the unmount?

    As far as I know you can safely mount a cleanly-unmounted Solaris UFS, otherwise it's really a layout compatibility issue. I'd try to do the same also with a recent GNU/Linux kernel

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