Re: [Qemu-devel] [Qemu-block] [PATCH RFC] qemu-io: Prefer stderr for error messages

2018-12-13 Thread Nir Soffer
On Thu, Dec 13, 2018 at 11:27 PM Eric Blake wrote: > On 12/13/18 11:44 AM, Nir Soffer wrote: > > >> The things is, qemu-io was never meant to be used by other > >> applications that need to process the results, it's a tool for testing > >> and debugging. If we had meant it to be used by other

Re: [Qemu-devel] [Qemu-block] [PATCH RFC] qemu-io: Prefer stderr for error messages

2018-12-13 Thread Eric Blake
On 12/13/18 11:44 AM, Nir Soffer wrote: The things is, qemu-io was never meant to be used by other applications that need to process the results, it's a tool for testing and debugging. If we had meant it to be used by other programs, we would have given it a machine-friendly interface. The

Re: [Qemu-devel] [Qemu-block] [PATCH RFC] qemu-io: Prefer stderr for error messages

2018-12-13 Thread Nir Soffer
On Thu, Dec 13, 2018 at 4:05 PM Kevin Wolf wrote: > Am 13.12.2018 um 11:47 hat Daniel P. Berrangé geschrieben: > > On Thu, Dec 13, 2018 at 01:52:29AM +0200, Nir Soffer wrote: > > > On Thu, Dec 13, 2018 at 12:13 AM Eric Blake wrote: > > > > > > > > When a qemu-io command fails, it's best if the

Re: [Qemu-devel] [Qemu-block] [PATCH RFC] qemu-io: Prefer stderr for error messages

2018-12-13 Thread Nir Soffer
On Thu, Dec 13, 2018 at 12:47 PM Daniel P. Berrangé wrote: > On Thu, Dec 13, 2018 at 01:52:29AM +0200, Nir Soffer wrote: > > On Thu, Dec 13, 2018 at 12:13 AM Eric Blake wrote: > > > > > > When a qemu-io command fails, it's best if the failure message > > > goes to stderr rather than stdout. > >

Re: [Qemu-devel] [Qemu-block] [PATCH RFC] qemu-io: Prefer stderr for error messages

2018-12-13 Thread Kevin Wolf
Am 13.12.2018 um 15:23 hat Eric Blake geschrieben: > On 12/13/18 8:05 AM, Kevin Wolf wrote: > > Am 13.12.2018 um 11:47 hat Daniel P. Berrangé geschrieben: > > > On Thu, Dec 13, 2018 at 01:52:29AM +0200, Nir Soffer wrote: > > > > On Thu, Dec 13, 2018 at 12:13 AM Eric Blake wrote: > > > > > > > >

Re: [Qemu-devel] [Qemu-block] [PATCH RFC] qemu-io: Prefer stderr for error messages

2018-12-13 Thread Eric Blake
On 12/13/18 8:05 AM, Kevin Wolf wrote: Am 13.12.2018 um 11:47 hat Daniel P. Berrangé geschrieben: On Thu, Dec 13, 2018 at 01:52:29AM +0200, Nir Soffer wrote: On Thu, Dec 13, 2018 at 12:13 AM Eric Blake wrote: When a qemu-io command fails, it's best if the failure message goes to stderr

Re: [Qemu-devel] [Qemu-block] [PATCH RFC] qemu-io: Prefer stderr for error messages

2018-12-13 Thread Kevin Wolf
Am 13.12.2018 um 11:47 hat Daniel P. Berrangé geschrieben: > On Thu, Dec 13, 2018 at 01:52:29AM +0200, Nir Soffer wrote: > > On Thu, Dec 13, 2018 at 12:13 AM Eric Blake wrote: > > > > > > When a qemu-io command fails, it's best if the failure message > > > goes to stderr rather than stdout. > >

Re: [Qemu-devel] [Qemu-block] [PATCH RFC] qemu-io: Prefer stderr for error messages

2018-12-13 Thread Daniel P . Berrangé
On Thu, Dec 13, 2018 at 01:52:29AM +0200, Nir Soffer wrote: > On Thu, Dec 13, 2018 at 12:13 AM Eric Blake wrote: > > > > When a qemu-io command fails, it's best if the failure message > > goes to stderr rather than stdout. > > This makes sense, but it will break users like this: > >

Re: [Qemu-devel] [Qemu-block] [PATCH RFC] qemu-io: Prefer stderr for error messages

2018-12-12 Thread Eric Blake
On 12/12/18 5:52 PM, Nir Soffer wrote: On Thu, Dec 13, 2018 at 12:13 AM Eric Blake wrote: When a qemu-io command fails, it's best if the failure message goes to stderr rather than stdout. This makes sense, but it will break users like this:

Re: [Qemu-devel] [Qemu-block] [PATCH RFC] qemu-io: Prefer stderr for error messages

2018-12-12 Thread Nir Soffer
On Thu, Dec 13, 2018 at 12:13 AM Eric Blake wrote: > > When a qemu-io command fails, it's best if the failure message > goes to stderr rather than stdout. This makes sense, but it will break users like this: