Date: Fri, 9 Jul 1999 11:51:18 +0930 From: Greg Lehey <grog@lemis.com> To: "Jordan K. Hubbard" <jkh@zippy.cdrom.com> Cc: Matthew Dillon <dillon@apollo.backplane.com>, Aaron Smith <aaron-fbsd@mutex.org>, freebsd-hackers@FreeBSD.ORG Subject: Re: Simplifying Vinum (was: ufs/ffs resize?) Message-ID: <19990709115118.T6035@freebie.lemis.com> In-Reply-To: <8846.931485161@zippy.cdrom.com>; from Jordan K. Hubbard on Thu, Jul 08, 1999 at 06:52:41PM -0700 References: <19990627135736.F427@freebie.lemis.com> <8846.931485161@zippy.cdrom.com>
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On Thursday, 8 July 1999 at 18:52:41 -0700, Jordan K. Hubbard wrote:
>> I think you'll find, once you get that far, that things are anything
>> but trivial. I'm certainly open to suggestions, but consider:
>>
>> vinum -i /dev/something volumename
>>
>> Where does it insert it? What if the volume has more than one plex,
>> which it will in the case of a mirror?
>
> OK, perhaps I was getting a little carried away here. :)
>
>> Not if they're done well. I'm open to suggestions. Here are couple
>> of possibilities: add commands "cat", "stripe" and "mirror":
>>
>> vinum cat /dev/da1h /dev/da2h
>> vinum stripe /dev/da1h /dev/da2h /dev/da3h /dev/da4h
>> vinum mirror /dev/da1h /dev/da2h
>> vinum mirror /dev/da1h /dev/da2h /dev/da3h /dev/da4h
>
> These sound just fine to me!
>
>> And what about the names? It seems tacky to have to write down the
>> name that Vinum chooses. How about adding a name parameter, either
>> implicitly or explicitly? For example,
>>
>> vinum cat myvol /dev/da1h /dev/da2h
>> vinum cat -n myvol /dev/da1h /dev/da2h
>
> I also think that's a better proposal than mine, yes.
OK. This goes back to a message I wrote a long time ago. It's been a
week since I committed the changes. Here's what we have (from
vinum(8)):
concat [-f] [-n name] [-v] drives
Create a concatenated volume from the specified drives.
mirror [-f] [-n name] [-s] [-v] drives
Create a mirrored volume from the specified drives.
stripe [-f] [-n name] [-v] drives
Create a striped volume from the specified drives.
The -s flag to mirror states whether to create concatenated or striped
plexes for the mirror. Striped plexes always have stripes of 256 kB.
For more details, RTFM.
Greg
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