Date: Wed, 16 Jun 1999 12:00:45 +0200 From: Norbert Meissner <norbert.meissner@daimlerchrysler.com> To: "'Greg Lehey'" <grog@lemis.com> Cc: FreeBSD Questions <questions@FreeBSD.ORG> Subject: AW: What would happen if a vinum drive failed? Message-ID: <A991441F7BF5D111B2BB0008C7A410113D0741@sutgxs05.str.daimlerchrysler.com>
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On Tuesday, 15 June 1999 at 16:46:35 -0400, Christopher Michaels wrote:
> Hello,
> I have a simple question... I have a vinum volume that consists of 3
> concatenated drives. If say.. the 3rd drive were to fail, is the whole
> volume trashed? or just the information on the 3rd drive?
BTW: how can I recover the Information on a mirrored device?
config-file:
drive 1 device /dev/da1h
drive 2 device /dev/da2h
volume foo
plex org concat
sd size 12g drive 1
plex org concat
sd size 12g drive 2
considering the volume foo is mounted on /mnt/foo I've done the following:
#cp myfile /mnt/foo
#ls /mnt/foo
myfile
Now I "simulate" a drive failure, e.g. halt the sytem, power-down,
PULL OUT THE POWER PLUG OF ONE DRIVE, power-up
Vinum reports that it is missing one drive, but it seems to be happy
#ls /mnt/foo
myfile
#cp yourfile /mnt/foo
#ls /mnt/foo
myfile yourfile
Look's like it's working with only one drive, really great stuff!
Then i simulate backwards, putting the power plug in the
drive (yes, I've halted the system before) and reboot.
#ls /mnt/foo
myfile
hmmm......, reading the documentation.....,
nothing mentioned, is there anyone out there
who has some knowledge of these things?
Norbert
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