How to create an "empty" file (each byte content = 0) with a specific size (very large) very fast ?

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Hi Marten,

I know how to do it in C but not in ST.  We do this very thing when we grow database extents to a larger size.  It's a little tricky because simply changing the file size does not guarantee the space in the file will be available when it's written to.

A small user action that does this could be written in C, then the user action could be called from Smalltalk in GemStone.

I will also submit a  feature request to do this from GsFile in a future release.

Norm Green

Does anyone know how to do this ?

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Does anyone know how to do this ?

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Martin McClure <[hidden email]> hat am 22. Juni 2020 um 18:21 geschrieben:

Hi Marten,

On Linux, the command "fallocate" does this quite nicely. If you want to do it from within Smalltalk, I'd think that invoking fallocate using #performOnServer: would work.

Regards,
-Martin

On 6/22/20 7:05 AM, Marten Feldtmann via Glass wrote:

Does anyone know how to do this ?

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