Re: [Firebird-devel] Shadow files

2011-08-09 Thread Alex Peshkoff
On 08/09/11 11:07, Kjell Rilbe wrote: > Den 2011-08-09 08:54 skrev Alex Peshkoff såhär: >> On 08/08/11 19:10, Dimitry Sibiryakov wrote: >>> 08.08.2011 16:57, Kjell Rilbe wrote: So, I ask you in the devel team: is the shadow file feature going to go away or will you make sure it stays f

Re: [Firebird-devel] Shadow files

2011-08-09 Thread Kjell Rilbe
Den 2011-08-09 08:54 skrev Alex Peshkoff såhär: > On 08/08/11 19:10, Dimitry Sibiryakov wrote: >> 08.08.2011 16:57, Kjell Rilbe wrote: >>> So, I ask you in the devel team: is the shadow file feature going to go >>> away or will you make sure it stays functional? >> If discussion about droppin

Re: [Firebird-devel] Shadow files

2011-08-08 Thread Alex Peshkoff
On 08/08/11 19:10, Dimitry Sibiryakov wrote: > 08.08.2011 16:57, Kjell Rilbe wrote: >> So, I ask you in the devel team: is the shadow file feature going to go >> away or will you make sure it stays functional? >If discussion about dropping of shadow is ever raised I will vote against. > +1 -

Re: [Firebird-devel] Shadow files

2011-08-08 Thread Dimitry Sibiryakov
08.08.2011 22:14, Kjell Rilbe wrote: > Any indication of how large the lag (N) could be? Can it grow without > bounds if the server load is high? I can say for sure only for replicator by IBPhoenix: It depends on replication settings and timing. If crash occur after replication finish but

Re: [Firebird-devel] Shadow files

2011-08-08 Thread Kjell Rilbe
Den 2011-08-08 18:39 skrev Dimitry Sibiryakov såhär: > 08.08.2011 18:33, Kjell Rilbe wrote: >> This copy should be as up to date as possible, >> transaction by transaction. >> >> Are there no replicators that can do this? > > Yep. > All Firebird replicators that I know are asynchronous. It

Re: [Firebird-devel] Shadow files

2011-08-08 Thread Dimitry Sibiryakov
08.08.2011 18:33, Kjell Rilbe wrote: > This copy should be as up to date as possible, > transaction by transaction. > > Are there no replicators that can do this? Yep. All Firebird replicators that I know are asynchronous. It means that there is a possibility to loose some data on crash. T

Re: [Firebird-devel] Shadow files

2011-08-08 Thread Kjell Rilbe
Den 2011-08-08 17:10 skrev Dimitry Sibiryakov såhär: > 08.08.2011 16:57, Kjell Rilbe wrote: >> So, I ask you in the devel team: is the shadow file feature going to go >> away or will you make sure it stays functional? > > If discussion about dropping of shadow is ever raised I will vote against

Re: [Firebird-devel] Shadow files

2011-08-08 Thread Dimitry Sibiryakov
08.08.2011 16:57, Kjell Rilbe wrote: > So, I ask you in the devel team: is the shadow file feature going to go > away or will you make sure it stays functional? If discussion about dropping of shadow is ever raised I will vote against. > Is replication a viable option? Perhaps even better? Why

[Firebird-devel] Shadow files

2011-08-08 Thread Kjell Rilbe
Hi, In a fb-support discussion it has occurred to me and Karol Bieniaszewski that the old shadow file feature is actually useful for some purposes. Karol runs the master on a RAM disk to make sure reads and searches are as fast as possible, and has a shadow file on a regular disk to protect ag