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тАО03-03-2003 06:08 AM
тАО03-03-2003 06:08 AM
Question for my knowledge: We have 1 main disk who is mirrored with 2 mirroring. Whats happen if the main-disk goes down.
How works the mirroring with the two alternate disks? Works the mirroring still with this 2 mirroring disks. (For the right understanding: the mirroring isn't split on two disk - it are two mirrorings)
And now in German:
Fuer jene, die auch Deutsch sprechen: Was passiert, wenn ich eine Disk zweimal gespiegelt habe und dann die 'Hauptdisk' abstuerzt. Wie arbeitet das 'mirroring' weiter? Arbeite nun nur noch eine Disk, oder 'spiegeln' die restlichen Beiden sich gegenseitig?
Thanks and regards Konrad
Solved! Go to Solution.
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тАО03-03-2003 06:12 AM
тАО03-03-2003 06:12 AM
Re: 2 mirroring disks
swap out bad mirror
vgcfgrestore -n /dev/vg## /dev/rdsk/c#t#d0
vgchange -a y vg##
vgsync vg##
Really, no biggie.
The only benefit for 2 mirrors comes with hot backups, but his procedure has a fairly high degree of difficulty associated to it and is not for the weak at heart.
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тАО03-03-2003 06:15 AM
тАО03-03-2003 06:15 AM
Re: 2 mirroring disks
When you execute lvdisplay is the allocation policy strict? If strict then two disks must be used.
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тАО03-03-2003 06:26 AM
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тАО03-03-2003 06:34 AM
тАО03-03-2003 06:34 AM
Re: 2 mirroring disks
Armin is absolut correct with his answer.
Danke Armin