Date: Sat, 1 Jan 2000 13:19:04 +1030 From: Greg Lehey <grog@lemis.com> To: Marc Dodsworth <marcd@tpg.com.au> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: vinum question (warning long message) Message-ID: <20000101131904.I1528@freebie.lemis.com> In-Reply-To: <99123123443500.00997@zen.dodsworth.org> References: <99123123443500.00997@zen.dodsworth.org>
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On Friday, 31 December 1999 at 23:31:39 +1030, Marc Dodsworth wrote:
> Hi
>
> Got a little problem with vinum.
>
> I am creating a Raid5 array using 5 x 300Mb drives and have a little problem.
>
> Then I can create the file array with "vinum create zen) and it works fine.
> Configuration summary
>
> <snip>
>
> V RAID State: down Plexes: 1 Size: 1200 MB
>
> P RAID.p0 R5 State: init Subdisks: 5 Size: 1200 MB
>
> S RAID.p0.s0 State: empty PO: 0 B Size: 300 MB
> S RAID.p0.s1 State: empty PO: 32 kB Size: 300 MB
> S RAID.p0.s2 State: empty PO: 64 kB Size: 300 MB
> S RAID.p0.s3 State: empty PO: 96 kB Size: 300 MB
> S RAID.p0.s4 State: empty PO: 128 kB Size: 300 MB
>
> how ever when vinum starts (vinum start) I get a warning about defective object
>
> Warning: defective objects
>
> V RAID State: down Plexes: 1 Size: 1200 MB
> P RAID.p0 R5 State: init Subdisks: 5 Size: 1200 MB
> S RAID.p0.s0 State: empty PO: 0 B Size: 300 MB
> S RAID.p0.s1 State: empty PO: 32 kB Size: 300 MB
> S RAID.p0.s2 State: empty PO: 64 kB Size: 300 MB
> S RAID.p0.s3 State: empty PO: 96 kB Size: 300 MB
> S RAID.p0.s4 State: empty PO: 128 kB Size: 300 MB
That looks the same as before.
> and when I try to newfs the plex (newfs -v /dev/vinum/RAID (or rRAID) it comes
> back with.
This is a feature, not a bug. Your subdisks contain inconsistent
data. To quote vinum(8):
init [-S] size [-v] [-w] plex | subdisk
vinum init initializes a subdisk by writing zeroes to it. You
can initialize all subdisks in a plex by specifying the plex
name. This is the only way to ensure consistent data in a plex.
You must perform this initialization before using a RAID-5 plex.
It is also recommended for other new plexes. vinum initializes
all subdisks of a plex in parallel. Since this operation can
take a long time, it is normally performed in the background. If
you want to wait for completion of the command, use the -w (wait)
option.
Greg
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