LINUX Soft RAID (mdadm) 問題

忌廉麻美

1. 用 linux soft raid (mdadm) 有冇 size 上限 ? 簡單 d 講想用 4 個 1TB harddisk 做 raid 5 (total size = 3TB) 有冇問題 ?

2. 如果依家用 32-bit linux 開咗個 soft raid (mdadm)，第日轉用 64-bit linux 個 soft raid 可唔可以直接用番 ?

謝謝。

howdy

4x1TB in raid5 config is alright even in 32-bit system with a 2.6 kernel.  I don't know what's the max size though, anyone else??

as far as i know, software raid created by mdadm in 32bit system should be able to be used in 64-bit system.
just a note that if you are using XFS as the filesystem, you may have to run xfs_repair when migrating to a 64-bit system because of the possible difference in the journal format in different system architecture (data won't be lost though).

computer1975

Software RAID應該沒有問題

小心filesystem 過2TB的問題

忌廉麻美

原帖由 howdy 於 2009-2-5 21:13 發表
4x1TB in raid5 config is alright even in 32-bit system with a 2.6 kernel.  I don't know what's the max size though, anyone else??

as far as i know, software raid created by mdadm in 32bit system shou ...

Thank You

忌廉麻美

原帖由 computer1975 於 2009-2-6 01:36 發表
Software RAID應該沒有問題

小心filesystem 過2TB的問題

係咪 block size 唔可以太細 ?  (ext3) 打算用 4k block size ok 嗎 ? 還有其他地方要注意嗎 ?

謝謝

[ 本帖最後由 忌廉麻美 於 2009-2-6 16:26 編輯 ]