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From: "Russ Cox" <rsc@plan9.bell-labs.com>
To: 9fans@cse.psu.edu
Subject: Re: [9fans] Ephase question.
Date: Mon, 12 Aug 2002 23:31:11 -0400	[thread overview]
Message-ID: <b2d639c584428eeb6e05aadec101d658@plan9.bell-labs.com> (raw)

>   I see. But can you give me any insight into why it was implemented this
>   way. Again, it seems so obvious to use fids for reference counting and it
>   shouldn't be of a significant overhead. Moreover it's entirely up to
>   the FileServer to support this feature -- kernel is not supposed to
>   care. You should've had some reason for not supporting this in all
>   your FileServers.

If someone has a big runaway log file open that is running you out of
disk space, and you remove it, then it goes away.  That's a feature.
(Of course, we don't have this problem on the worm drive, but the
point stands.)  This way is simpler, and I've yet to see a compelling
argument against it.

You're right that the kernel doesn't care -- the file server is giving
you the phase error.  Many of the non-disk file systems do reference
count their files.

Russ



             reply	other threads:[~2002-08-13  3:31 UTC|newest]

Thread overview: 36+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-08-13  3:31 Russ Cox [this message]
  -- strict thread matches above, loose matches on Subject: below --
2002-08-14 14:12 Russ Cox
2002-08-14 13:19 rob pike, esq.
2002-08-15  8:59 ` Douglas A. Gwyn
2002-08-15 16:22   ` Ronald G Minnich
2002-08-13 23:49 rog
2002-08-13 17:28 Russ Cox
2002-08-13 17:01 rob pike, esq.
2002-08-13 16:37 anothy
2002-08-13 15:59 Russ Cox
2002-08-14  8:42 ` Douglas A. Gwyn
2002-08-13 15:57 Russ Cox
2002-08-13 15:43 rob pike, esq.
2002-08-13 13:13 rog
2002-08-13 12:16 presotto
2002-08-13 15:53 ` Ronald G Minnich
2002-08-13 11:43 David Gordon Hogan
2002-08-13 15:45 ` Ronald G Minnich
2002-08-13  6:17 Charles Forsyth
     [not found] <rsc@plan9.bell-labs.com>
2002-08-13  5:42 ` Russ Cox
2002-08-13  5:53   ` Scott Schwartz
2002-08-13  6:05   ` Ronald G Minnich
2002-08-13  6:22     ` Alexander Viro
2002-08-13  6:13   ` Alexander Viro
2002-08-13  4:20 Russ Cox
2002-08-13  3:37 rob pike, esq.
2002-08-13  9:31 ` Douglas A. Gwyn
2002-08-13  3:33 presotto
2002-08-13  4:10 ` Alexander Viro
2002-08-13  5:39 ` Ronald G Minnich
2002-08-19 16:23   ` Boyd Roberts
2002-08-13  6:46 ` Andrew Lynch
2002-08-13 22:07 ` Roman V. Shaposhnick
2002-08-13  1:39 presotto
2002-08-13  3:14 ` Roman V. Shaposhnick
2002-08-13  1:26 Roman V. Shaposhnick

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