Date: Sat, 14 Feb 2004 09:56:11 +1030 From: Greg 'groggy' Lehey <grog@FreeBSD.org> To: Vincent Rioux <vrioux@centrenad.com>, Dag-Erling =?iso-8859-1?Q?Sm=F8rgrav?= <des@des.no> Cc: freebsd-current@freebsd.org Subject: Re: Vinum dumpconfig returns nothing ?!? Message-ID: <20040213232611.GP61632@wantadilla.lemis.com> In-Reply-To: <xzpsmhfge3m.fsf@dwp.des.no> <3109.192.168.1.147.1076687025.squirrel@internet.centrenad.com> References: <3109.192.168.1.147.1076687025.squirrel@internet.centrenad.com> <xzpsmhfge3m.fsf@dwp.des.no> <3109.192.168.1.147.1076687025.squirrel@internet.centrenad.com>
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On Friday, 13 February 2004 at 10:43:45 -0500, Vincent Rioux wrote:
> Hello,
>
> I am trying to setup a software raid5 volume using Vinum on FreeBSD 5.2.
> So far I did successfully complete these tasks :
>
>
> - Created the config file :
> drive d0 device /dev/ad10
> drive d1 device /dev/ad11
> (etc)
These are disk devices, not disk partitions. From the man page:
DRIVE LAYOUT CONSIDERATIONS
vinum drives are currently BSD disk partitions. They must be of type
vinum in order to avoid overwriting data used for other purposes. Use
disklabel -e to edit a partition type definition. The following display
shows a typical partition layout as shown by disklabel(8):
8 partitions:
# size offset fstype [fsize bsize bps/cpg]
a: 81920 344064 4.2BSD 0 0 0 # (Cyl. 240*- 297*)
b: 262144 81920 swap # (Cyl. 57*- 240*)
c: 4226725 0 unused 0 0 # (Cyl. 0 - 2955*)
e: 81920 0 4.2BSD 0 0 0 # (Cyl. 0 - 57*)
f: 1900000 425984 4.2BSD 0 0 0 # (Cyl. 297*- 1626*)
g: 1900741 2325984 vinum 0 0 0 # (Cyl. 1626*- 2955*)
In this example, partition ``g'' may be used as a vinum partition. Par-
titions ``a'', ``e'' and ``f'' may be used as UFS file systems or ccd
partitions. Partition ``b'' is a swap partition, and partition ``c''
represents the whole disk and should not be used for any other purpose.
> plex org raid5 433k
The stripe size should be a multiple of the UFS block size, normally
16 kB. Not doing so will not stop Vinum working, but it will impact
on the performance.
> Now the problem is that everytime I reboot the machine to test if
> the volume automounts correctly (yes, start_vinum="YES" is in
> rc.conf), all the configuration is lost and I must recreate and
> reinitialize the volume (effectively losing all my data)...
Well, no, just not finding it. It's all still there.
> Now what's weird, just after setting everything up and finishing
> initializing the volume, I just can't seem to be able to dump the
> config from the disks!
This is a bug introduced in Vinum as the result of some recent changes
in the bio layer. Previously it would have refused to create the
drives unless they were a partition of type "vinum".
> Even if I do a saveconfig (which I shouldn't have to do since
> config. updates are not disabled), there's nothing returned from
> dumpconfig! :
> vinum -> saveconfig
> vinum -> dumpconfig
Yes, if you don't have a configuration, you don't save anything.
On Friday, 13 February 2004 at 17:04:45 +0100, Dag-Erling Smrgrav wrote:
> "Vincent Rioux" <vrioux@centrenad.com> writes:
>> I am trying to setup a software raid5 volume using Vinum on FreeBSD 5.2.
>
> Vinum does not play along with GEOM and should therefore be considered
> broken in 5.x.
No, that is not correct. The only thing that doesn't work is swap on
a Vinum volume.
> Lukas Ertl is working on adapting Vinum to GEOM; see the
> freebsd-geom list archives for more details.
That is correct.
Greg
--
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