近來在網上看到有人引了經典著作 《人月神話》裏一段 ,來解釋編程的樂趣。手痕自己亂翻譯一次做中文:
編程何樂?行者何獲?
其一是創造之樂。如孩童愛堆泥沙,大人也愛創造,尤其是自己作品。我想這是來自神的創作之樂
After I was so negative on ZFS's new failmode setting , one might sensibly ask what the problem with it is.
(Background: the ZFS failmode setting controls what happens whenZFS can't perform IO to a pool because the pool has totally lostredundancy. It has three settings, one to panic your system (just likethe old behavior ), one to block all IO until thedevices recover, and one to continue as much as possible.)
The problem that I observed in our iSCSI based environment
| |
| From 2009 clippings |
I've always seen how a mirrored /boot could work if the disks wereabsolutely identical up to the end of the /boot partition; if theywere identical, the absolute block positions of everything that the bootblocks wanted to load would be identical, so nothing would care aboutwhich disk it was talking to. My concern was always what happened if thedisks weren't quite so utterly identical, because back in the day itseemed to me like that required quite a lot of magic.
(I'