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Re: XFS as Root filesystem

To: Steve Lord <lord@xxxxxxx>
Subject: Re: XFS as Root filesystem
From: "Stephen C. Tweedie" <sct@xxxxxxxxxx>
Date: Tue, 18 Apr 2000 00:27:52 +0100
Cc: Phil Schwan <phil@xxxxxxxxxxxxx>, linux-xfs@xxxxxxxxxxx
In-reply-to: <200004131528.KAA07085@xxxxxxxxxxxxxxxxxxxx>; from lord@xxxxxxx on Thu, Apr 13, 2000 at 10:28:23AM -0500
References: <phil@xxxxxxxxxxxxx> <200004131528.KAA07085@xxxxxxxxxxxxxxxxxxxx>
Sender: owner-linux-xfs@xxxxxxxxxxx
Hi,

On Thu, Apr 13, 2000 at 10:28:23AM -0500, Steve Lord wrote:
> 
> This in itself looks reasonable, but Stephen Tweedie mentioned detecting
> read only devices and refusing to do the recovery - and that there was
> code which did this in the latest ext3 cut.

It's trivial: just a

                        if (is_read_only(sb->s_dev)) {
                                printk(KERN_ERR "EXT3-fs: write access 
unavailable, cannot proceed.\n");
                                return -EROFS;
                        }

before attempting the recovery.  That does the readonly check on the
underlying media rather than on the current filesystem state.

--Stephen

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