Hello Robert,
On 6/1/06, Robert Milkowski <[EMAIL PROTECTED]> wrote:
Hello Anton,
Thursday, June 1, 2006, 5:27:24 PM, you wrote:
ABR> What about small random writes? Won't those also require reading
ABR> from all disks in RAID-Z to read the blocks for update, where in
ABR> mirroring only one disk need be accessed? Or am I missing something?
If I understand it correctly ZFS always writes new block - no updates.
It also means it should be able to write sequentially most of the time
even if application is issuing random writes/updates.
When the "update write" is smaller than the orignal block, you have to
read the rest of the original block in order to write a new block. I
think that's what Anton was refering.
Tao
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