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DB raw device 的 copy

DB raw device 的 copy

lv1是DB的raw device

我想將 lv1(20GB on VA) copy to lv2(30GB on EVA)

使用dd的話,有沒有什麼限制?



相反的,想將lv2 dd 至 lv1, 會失敗嗎?
3 回覆

DB raw device 的 copy

你的資料庫是offline的嗎?

dd是可行的,不過你的database不可以online

DB raw device 的 copy

資料庫會offline之後做dd

我想問的是source and target 的size不同,可否作dd ?

DB raw device 的 copy

size不同也是可以dd

不過byte大小你要自己指定, 不能只寫兩個device name

不然小->大 沒問題

大->小 就會出錯



所以記得, dd 要用的大小要指定正確..