Re: [Qemu-devel] Using cache=writeback safely on qemu 1.4.0 and later

2014-08-27 Thread Andrew Martin
- Original Message - > From: "Paolo Bonzini" > To: "Andrew Martin" > Cc: "Stefan Hajnoczi" , "qemu-devel" > > Sent: Wednesday, August 27, 2014 9:34:27 AM > Subject: Re: Using cache=writeback safely on qemu 1.4.0 and later >

Re: [Qemu-devel] Using cache=writeback safely on qemu 1.4.0 and later

2014-08-27 Thread Andrew Martin
- Original Message - > From: "Paolo Bonzini" > To: "Andrew Martin" , "Stefan Hajnoczi" > > Cc: "qemu-devel" > Sent: Tuesday, August 26, 2014 2:03:18 AM > Subject: Re: Using cache=writeback safely on qemu 1.4.0 and later >

Re: [Qemu-devel] Using cache=writeback safely on qemu 1.4.0 and later

2014-08-25 Thread Andrew Martin
- Original Message - > From: "Stefan Hajnoczi" > To: "Andrew Martin" > Cc: "qemu-devel" > Sent: Thursday, August 21, 2014 7:59:50 AM > Subject: Re: [Qemu-devel] Using cache=writeback safely on qemu 1.4.0 and later > > > When the di

Re: [Qemu-devel] Using cache=writeback safely on qemu 1.4.0 and later

2014-08-19 Thread Andrew Martin
- Original Message - > From: "Stefan Hajnoczi" > To: "Andrew Martin" > Cc: qemu-devel@nongnu.org > Sent: Tuesday, August 19, 2014 9:59:25 AM > Subject: Re: [Qemu-devel] Using cache=writeback safely on qemu 1.4.0 and later > > If you strace -f t

[Qemu-devel] Using cache=writeback safely on qemu 1.4.0 and later

2014-08-15 Thread Andrew Martin
written to the disks several hours before the crash was corrupted, which makes me think that it was never fsync()-ed to the non-volatile storage. Is it safe in this setup to use cache=writeback? Or, should I use cache=writethrough instead? Thanks, Andrew Martin