Re: [Qemu-devel] [PATCH 1/2] qemu-img: Allow source cache mode specification

2014-07-24 Thread Max Reitz
On 23.07.2014 10:10, Kevin Wolf wrote: Am 22.07.2014 um 22:06 hat Max Reitz geschrieben: On 21.07.2014 17:52, Eric Blake wrote: On 07/19/2014 02:35 PM, Max Reitz wrote: Many qemu-img subcommands only read the source file(s) once. For these use cases, a full write-back cache is unnecessary and

Re: [Qemu-devel] [PATCH 1/2] qemu-img: Allow source cache mode specification

2014-07-23 Thread Kevin Wolf
Am 22.07.2014 um 22:06 hat Max Reitz geschrieben: > On 21.07.2014 17:52, Eric Blake wrote: > >On 07/19/2014 02:35 PM, Max Reitz wrote: > >>Many qemu-img subcommands only read the source file(s) once. For these > >>use cases, a full write-back cache is unnecessary and mainly clutters > >>host cache

Re: [Qemu-devel] [PATCH 1/2] qemu-img: Allow source cache mode specification

2014-07-22 Thread Max Reitz
On 21.07.2014 17:52, Eric Blake wrote: On 07/19/2014 02:35 PM, Max Reitz wrote: Many qemu-img subcommands only read the source file(s) once. For these use cases, a full write-back cache is unnecessary and mainly clutters host cache memory. Though this is generally no concern as cache memory is f

Re: [Qemu-devel] [PATCH 1/2] qemu-img: Allow source cache mode specification

2014-07-21 Thread Eric Blake
On 07/19/2014 02:35 PM, Max Reitz wrote: > Many qemu-img subcommands only read the source file(s) once. For these > use cases, a full write-back cache is unnecessary and mainly clutters > host cache memory. Though this is generally no concern as cache memory > is freely available and can be scaled

[Qemu-devel] [PATCH 1/2] qemu-img: Allow source cache mode specification

2014-07-19 Thread Max Reitz
Many qemu-img subcommands only read the source file(s) once. For these use cases, a full write-back cache is unnecessary and mainly clutters host cache memory. Though this is generally no concern as cache memory is freely available and can be scaled by the host OS, it may become a concern with thin