Coda File System

Re: Is coda not good at handling huge files?

From: Patrick Walsh <>
Date: Tue, 24 May 2005 08:13:29 -0600
> I've tried to copy some large files (about 600MB each) into the

	See this page in the wiki: (note
especially the file size section at the end).

> restart it by "venus -init". Thirdly, other client will lose
> connection to the volume for a short period of time after the write
> operation.

	I'm guessing this has to do with the fact that, "because we're single
threaded (userspace threading), the server process is blocked until all
the data has hit the disk." (this from a recent e-mail from Jan -- the
details are on this page: )

	I'm guessing (and I expect I'll be corrected if I'm wrong) that the
server is busy with the big file and so the other clients are unable to
get a decent response time.  Being write-disconnected is often more
efficient anyway as write operations for multiple files are batched
instead of being done one at a time.

	Generally speaking, coda seems to have issues with very large files,
directories with large numbers of files, and programs that keep files
open for writing on coda.

Patrick Walsh
eSoft Incorporated
303.444.1600 x3350

Received on 2005-05-24 10:16:46