Arch Linux

Da$aD

Member

Registered: 2014-10-01

Posts: 4

UFS RW not working

Hi all!

In attempt to enable UFS RW mounting I've built 3.18.0 kernel with CONFIG_UFS_FS_WRITE=y option in config (as it told in many guides). When I tried to mount UFS partition with "rw" option, it mounted silently (without any warnings about read-only mode, as it was with the arch's stock kernel). However, when I try to write to this partition, I still receive errors like "The partition is mounted read-only". Did I miss something? Do I need to set any other options in kernel's config?

P.S. It is my first kernel build, so I've used arch's stock kernel config as the basis, and CONFIG_UFS_FS_WRITE is the only change I've made in it.

nomorewindows

Member

Registered: 2010-04-03

Posts: 3,541

Re: UFS RW not working

You may have to explicitly pass -o rw to mount and have you set -t ufs -o ufstype=???.

Last edited by nomorewindows (2015-01-15 20:10:24)

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alphaniner

Member

From: Ancapistan

Registered: 2010-07-12

Posts: 2,810

Re: UFS RW not working

Did you try this?

But there's a reason UFS write support is not available by default:

Linux includes a UFS implementation for binary compatibility at the read level with other Unixes, but since there is no standard implementation for the vendor extensions to UFS ...

(emphasis mine)

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Da$aD

Member

Registered: 2014-10-01

Posts: 4

Re: UFS RW not working

nomorewindows, yes, i specify -t ufs and -o rw,ufstype=ufs2.

alphaniner, thanks, I tried it, and now any operation with mounted UFS partition hangs on - even ls and umount (and even forced umount).