Re: [CentOS] Rsync and differential Backups

2015-11-14 Thread J Martin Rushton
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Have a coffee or a beer, breathe deeply, then: On 14/11/15 00:42, Gordon Messmer wrote: > On 11/13/2015 12:59 PM, J Martin Rushton wrote: >> Maybe I should have been clearer: use (LVM) OR (RAID1 and >> break). > > I took your meaning. I'm saying tha

Re: [CentOS] Rsync and differential Backups

2015-11-14 Thread Mark Milhollan
On Fri, 13 Nov 2015, Gordon Messmer wrote: >Breaking a RAID volume doesn't make filesystems consistent, While using LVM arranges for some filesystems to be consistent (it is not always possible), it does nothing to ensure application consistency which can be just as important. Linux doesn't h

Re: [CentOS] Poor perfmance of bridged interfaces

2015-11-14 Thread Mark Milhollan
On Fri, 13 Nov 2015, Ulf Volmer wrote: >On 11/13/2015 12:57 PM, Sergio Belkin wrote: >>When I enable stp: >> >> [root@localhost ~]# brctl show br0 >> bridge name bridge id STP enabled interfaces >> br0 8000.080027a398e6 yes enp0s3 >>

Re: [CentOS] Poor perfmance of bridged interfaces

2015-11-14 Thread Sergio Belkin
2015-11-13 16:43 GMT-03:00 Gordon Messmer : > On 11/13/2015 09:15 AM, Sergio Belkin wrote: > >> But AFAIK, routers divide broadcast domains, and switches (and >> therefore bridges) divide collision domains. >> > > Oh good, Cisco terminology. :) > Oh yeah, > > I'll be more specific than I

Re: [CentOS] Poor perfmance of bridged interfaces

2015-11-14 Thread Gordon Messmer
On 11/14/2015 09:20 AM, Sergio Belkin wrote: I'd want to connect a VM to another VM (or eventually to the host) via the "Linux bridge" so that I can demonstrate that capability in a classroom with only one laptop. You don't actually need to attach *any* ethernet interfaces to do that. If you

Re: [CentOS] Rsync and differential Backups

2015-11-14 Thread Gordon Messmer
On 11/14/2015 03:04 AM, J Martin Rushton wrote: On 14/11/15 00:42, Gordon Messmer wrote: For instance, it only works if you mirror a single disk. It doesn't work if you use RAID10 or RAID5, or RAID6, or RAIDZ, etc. That of course is exactly why I said RAID1. I know. And I was trying to make

Re: [CentOS] Rsync and differential Backups

2015-11-14 Thread Gordon Messmer
On 11/14/2015 09:01 AM, Mark Milhollan wrote: On Fri, 13 Nov 2015, Gordon Messmer wrote: Breaking a RAID volume doesn't make filesystems consistent, While using LVM arranges for some filesystems to be consistent (it is not always possible) Can you explain what you mean? The standard filesyte

Re: [CentOS] Poor perfmance of bridged interfaces

2015-11-14 Thread James A. Peltier
- Original Message - | On 11/14/2015 09:20 AM, Sergio Belkin wrote: | > I'd want to connect a VM to another VM (or eventually to the host) via the | > "Linux bridge" so that I can demonstrate that capability in a classroom | > with only one laptop. If the purpose of this is to demonstrate