Re: [Vserver] Re: keeping a mirror machine synched
On Wed, Feb 28, 2007 at 04:15:08PM +0100, Herbert Poetzl wrote: > for harddisks, low temperature is the secret of > long life (and stable env. conditions, of course) There's a reasonably interesting recent paper from Google labs which is making the rounds http://labs.google.com/papers/disk_failures.pdf You might find some of the results surprising. > hddtemp is a nice tool to figure the disk temp > for most newer drives, and as a rule of the thumb, > everything below 40°C is considered fine and all > above 50°C is considered deadly ... Thanks for the pointer, that's a nice addition to smartmontools and mdadm email notification. -- Eugen* Leitl http://leitl.org";>leitl http://leitl.org __ ICBM: 48.07100, 11.36820http://www.ativel.com 8B29F6BE: 099D 78BA 2FD3 B014 B08A 7779 75B0 2443 8B29 F6BE signature.asc Description: Digital signature ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver
Re: [Vserver] Re: keeping a mirror machine synched
> In our mini-ITX's we started to use Seagates as the Maxtors were > dropping down like flys. Although now I know they are one and the > same, we still opt for Seagates. > > Although Maxtor always replaced them with no problems, its the hassle > :) for harddisks, low temperature is the secret of long life (and stable env. conditions, of course) hddtemp is a nice tool to figure the disk temp for most newer drives, and as a rule of the thumb, everything below 40°C is considered fine and all above 50°C is considered deadly ... Yeah, although there was a google report out recently that said cooler drives failed quicker (go figure!) Most of our drives are anything from 35-45, but have a few at the 50 mark. But have been there for 2 years and not failed. Although we tend to do disk swaps every 12 months anyway. It saves a lot of heart ache Darren ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver
Re: [Vserver] Re: keeping a mirror machine synched
On Wed, Feb 28, 2007 at 06:49:03AM +, Ticktac UK wrote: > >I used to run a HA NFS configuration using a dual mini-ITX system in > >1U (with a Travla C147 case). The synch speed sucked howver, and the > >drives (300 GB Maxtors) ran too hot and died rather soon. (I RMAed > >them, but one RMAed one is acting up as well, so I'm back to mice and > >pumpkin -- at least the root RAID is working). > > In our mini-ITX's we started to use Seagates as the Maxtors were > dropping down like flys. Although now I know they are one and the > same, we still opt for Seagates. > > Although Maxtor always replaced them with no problems, its the hassle > :) for harddisks, low temperature is the secret of long life (and stable env. conditions, of course) hddtemp is a nice tool to figure the disk temp for most newer drives, and as a rule of the thumb, everything below 40°C is considered fine and all above 50°C is considered deadly ... HTH, Herbert > Darren > > > ___ > Vserver mailing list > Vserver@list.linux-vserver.org > http://list.linux-vserver.org/mailman/listinfo/vserver ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver
RE: [Vserver] Re: keeping a mirror machine synched
I used to run a HA NFS configuration using a dual mini-ITX system in 1U (with a Travla C147 case). The synch speed sucked howver, and the drives (300 GB Maxtors) ran too hot and died rather soon. (I RMAed them, but one RMAed one is acting up as well, so I'm back to mice and pumpkin -- at least the root RAID is working). In our mini-ITX's we started to use Seagates as the Maxtors were dropping down like flys. Although now I know they are one and the same, we still opt for Seagates. Although Maxtor always replaced them with no problems, its the hassle :) Darren ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver
[Vserver] Re: keeping a mirror machine synched
On Tue, Feb 27, 2007 at 02:22:14PM -0800, Martin Fick wrote: > You could also use drbd and heartbeat to do the > mirroring and have active failover of your vserver! I I used to run a HA NFS configuration using a dual mini-ITX system in 1U (with a Travla C147 case). The synch speed sucked howver, and the drives (300 GB Maxtors) ran too hot and died rather soon. (I RMAed them, but one RMAed one is acting up as well, so I'm back to mice and pumpkin -- at least the root RAID is working). > use a custom heartbeat script for vservers to do this, > seems to work well, If you could post it here, that would be rather useful. -- Eugen* Leitl http://leitl.org";>leitl http://leitl.org __ ICBM: 48.07100, 11.36820http://www.ativel.com 8B29F6BE: 099D 78BA 2FD3 B014 B08A 7779 75B0 2443 8B29 F6BE signature.asc Description: Digital signature ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver
Re: [Vserver] Re: keeping a mirror machine synched
--- Herbert Poetzl <[EMAIL PROTECTED]> wrote: > On Tue, Feb 27, 2007 at 02:22:14PM -0800, Martin > Fick wrote: > > > From: Eugen Leitl <[EMAIL PROTECTED]> > > > > > > ...I also have an identically configured second > such machine. ... > > > Apart from /usr/local/etc/vservers/ is there > > > anything else I should synch? > > > > You could also use drbd and heartbeat to do the > > mirroring and have active failover of your > > vserver! I use a custom heartbeat script for > > vservers to do this, seems to work well, > > well, maybe you want to share it then, or > even do some wiki page on how to do this ... OK, here is a start: http://linux-vserver.org/Fail-over This does not yet have any specifics for drbd, but rather is an explanation of how one can use heartbeat to start and stop vservers along with a link to my ocf script (is there a place for scripts?) Would more details about setting up drbd be needed? I use a custom ocf script for that too since I could never get the one delivered with heartbeat to work for more than one drbd 7 device (not sure this is the right forum for that)? Hope it helps, -Martin TV dinner still cooling? Check out "Tonight's Picks" on Yahoo! TV. http://tv.yahoo.com/ ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver
Re: [Vserver] Re: keeping a mirror machine synched
On Tue, Feb 27, 2007 at 02:22:14PM -0800, Martin Fick wrote: > > From: Eugen Leitl <[EMAIL PROTECTED]> > > > > ...I also have an identically configured second such > > > machine. > > > > I run a nightly script (over a private network) > > which does the > > following synchronisation from the production to the > > backup machine: > > rsync -a -e ssh /home/ [EMAIL PROTECTED]:/home/ > > rsync -a -e ssh /usr/local/etc/vservers/ > > [EMAIL PROTECTED]:/usr/local/etc/vservers/ > > > > My vservers live in /vservers which is a symlink to > > /home/vservers. > > Apart from /usr/local/etc/vservers/ is there > > anything else I should synch? > > You could also use drbd and heartbeat to do the > mirroring and have active failover of your vserver! I > use a custom heartbeat script for vservers to do this, > seems to work well, well, maybe you want to share it then, or even do some wiki page on how to do this ... TIA, Herbert > -Martin > > > It's here! Your new message! > Get new email alerts with the free Yahoo! Toolbar. > http://tools.search.yahoo.com/toolbar/features/mail/ > ___ > Vserver mailing list > Vserver@list.linux-vserver.org > http://list.linux-vserver.org/mailman/listinfo/vserver ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver
[Vserver] Re: keeping a mirror machine synched
> From: Eugen Leitl <[EMAIL PROTECTED]> > > ...I also have an identically configured second such > machine. > > I run a nightly script (over a private network) > which does the > following synchronisation from the production to the > backup machine: > rsync -a -e ssh /home/ [EMAIL PROTECTED]:/home/ > rsync -a -e ssh /usr/local/etc/vservers/ > [EMAIL PROTECTED]:/usr/local/etc/vservers/ > > My vservers live in /vservers which is a symlink to > /home/vservers. > Apart from /usr/local/etc/vservers/ is there > anything else I should synch? You could also use drbd and heartbeat to do the mirroring and have active failover of your vserver! I use a custom heartbeat script for vservers to do this, seems to work well, -Martin It's here! Your new message! Get new email alerts with the free Yahoo! Toolbar. http://tools.search.yahoo.com/toolbar/features/mail/ ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver
