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Re: grub vs st_dev (aka fsid) / st_rdev

From: olafBuddenhagen
Subject: Re: grub vs st_dev (aka fsid) / st_rdev
Date: Wed, 11 Nov 2009 00:23:17 +0100
User-agent: Mutt/1.5.19 (2009-01-05)


On Mon, Nov 09, 2009 at 10:47:08PM +0100, Samuel Thibault wrote:

> - Either we align more on POSIX to manage to get the st_dev (aka fsid)
> of filesystems equal to the the st_rdev of their underlying /dev
> entries.  An easy way is to have storeios expose their own pid as
> st_rdev, and have filesystems use the underlying storeio st_rdev for
> their st_dev (aka fsid).  One issue is for the / ext2fs, since it
> doesn't use a storeio, and a storeio could be started later.

I don't see how this is a problem specific to "/"... AIUI, it would be
possible to start another storeio for a store that already has one just
the same. (Unless access to the actual underlying device is exclusive --
in which case "/" wouldn't be a problem either.)


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