Journaling filesystems and the fsync() problem

Consider your ordinary journaling filesystem. For simplicity andreliability you have a single, global log in which you put transactionsfor all of your filesystem activity, instead of anything morecomplicated. One useful consequence of this global log is that you havenow created a filesystem-wide global order of all filesystem events(sometimes called a 'total order'), which will be preserved even ifyou crash and restart.

(You implicitly had a total order before, but it didn't necessarilysurvive crashes.)

This sounds


寵愛的限度

你是不會願意相信的,但請容許我大膽假設:要害一個人,最殘忍的方法就是寵壞他,他會自取滅亡的。如果,整個社會都做慣了寵兒,居住在此的 人,豈能不壞到骨子裡去?縱然,面對目前浮現於眼前的衆多問題都看似很重要

Why you should ratelimit messages that outside things can cause

Modern versions of NFS have a variety of authentication methods, andso one of the errors that a NFS server can give a client is 'yourauthentication method is too weak'; for example, the client couldbe sending plain old Unix UIDs and GIDs to a server that requiresKerberos to get strong distributed filesystem authentication . When this happens, the Linux kernelhelpfully prints an error message about it:

call_verify: server somehost.cs requires stronger authentication.

In fact, it prints this message every time it gets


《林賽安德遜永不言悔 》(Never Apologize)


李焯桃親自出馬, 只可惜在場只有小貓十數隻, 無人向導演Mike Kaplan詢問, 氣氛相當尷尬.

和網友Garrick同場, 我說: 「導演都有到喎. 」
Garrick 笑道: 導演 (Lindsay Anderson) 死左好耐囉! 我回應: 如果『佢』真係黎左, 你驚唔驚先? 不過,

給林局長的歌



大磡歌

曲/詞:志雄

讓我心痛 但沒法落淚
看著這家裡 變做廢墟
我只想知道 這算是合理制度
我只想聽到 有沒有合理報導
拆屋兼封鋪 有家歸不到
妳知不知道 你知不知道
一個家園被摧毀的味道

你話阻礙你地發展 要市區重建
你有冇理過佢

The problem of charging for things (well, one of them)

People who want to charge relatively low fees for things often make theargument that people will pay because the charge is such a small amountof money that it is easily afforded, and people get great value for it.One of the problems of charging for things is that it doesn't work thisway.

When you charge, you're not competing to be a great value, you'recompeting to be the most attractive thing for people to do with thatmoney. Want to get two dollars from someone


《儘管如此我沒做過》(I Just didn't do it)


一 別十年, 周防正行做到最簡約的地步. 表面上以為他要說教、放棄娛樂性 (就連配樂的周防義和也「惜音如金」, 法庭上的靜音勝於一切) , 淡如水的節奏卻愈滾出戲味來. 跟前作《談談情, 跳跳舞》, 在《儘管如此我沒做過

Some things I dislike about the ASUS Eee

I should note that I actually like my Eee (for what it is). But everytime I try to write some sort of review of it, these things bubble up tothe top of my mind, so I am going to write them down to get rid of them.

In no particular order:

  • my one major issue is that I really want more vertical space.480 pixels is pretty cramped and limiting; while I can fit intwo overlapping, readable 80x24 terminal windows,

背後的人

我有時會這樣形容一個歌者:背後有個人!

據說歌者的其中一項技巧,就是通過特別的發聲方法,使到聲音不單單只是從喉而發,而是引發身體不同部位產生共鳴,化身成一座喇叭,聲音得到放大,感覺深遠,嗓音直上雲霄,繞


對星辰的驚慌

上圖右起:葉輝、北島、鄭單衣、黃怒波、歐陽江河、翟永明、唐曉渡、汪暉。

下圖左起:黃子平、李陀、汪暉。


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