softraid mirror & large drives (3T)
Hello, I'm planning on replacing an old fileserver that has a single 1T drive with something a little newer having 3T of space. I have two 3T drives and have installed OpenBSD 6.0 to both as a softraid mirror. Works well and I simulated a drive failure by shutting it down, removing a drive, and rebooting. The drive has been re-installed and it is now rebuilding the mirror. After 17 hours it is 24% complete, so it'll be about three days to complete. The system is: AMD E2-3200 2.40 GHz 4G RAM 2 x 3T Seagate Barracuda 7200rpm SATA With this much disk space, should I be looking at another way of achieving data redundancy? The goal is to increase redundancy of the data and the mirror would be periodically backed up to another server in a different building. My only concern here is the suitability of the softraid mirror for a large filesystem. I've thought of using the second drive as a backup and rsync'ing it nightly, but then failure of the primary drive would mean more downtime before it's operational again. A long rebuild time isn't a major problem; just want to make sure I'm not overlooking a more sensible option. FWIW, I used the following info to get set up: https://www.openbsd.org/faq/faq14.html#softraidDI http://openbsd-archive.7691.n7.nabble.com/Large-3TB-HDD-support-td95308.html Thanks, -- Ian
Re: softraid mirror & large drives (3T)
Thanks for the feedback, Karel, Allan, and Kamil. The motivation is long-term data storage reliability. For example, my wife creates graphical books, which involves large files, plus other work and personal files. Having a mirror is not terribly important, so doing a nightly sync to another machine is possible. Since it's been mentioned, what SATA RAID controller cards are recommended for OpenBSD on i386? I wonder if they would fit my budget. Has the "supported hardware" page been removed from the openbsd.org website? I only found such a page here: http://openbsd.das.ufsc.br/i386.html#hardware Thanks, -- Ian P.S., Karel, many Americans confuse loose/lose. :) On Tue, 18 Apr 2017, Karel Gardas wrote: > loose -> lose. Sorry not native English speaker here. > > On Tue, Apr 18, 2017 at 6:09 PM, Karel Gardas wrote: > > How much data can you loose on this mirror? The rebuild time is long > > and the chance of another drive dying is higher during rebuild so I > > would consider either increasing redundancy to 3-way mirror or > > decreasing time between backups. All depending on how much data you > > can loose when something goes wrong. > >
system lock-up - RTFM?
My 3.9 workstation has started locking up on me several times a day. The box itself has been in use for months. It may be a coincidence that the problem started shortly after upgrading from 3.8. I've set ddb.panic=1 and ddb.log=1, but each lock-up just freezes the system and leaves no clues in dmesg or /var/crash. It almost always happens under somewhat heavy load. Other than swapping out various bits of hardware, which would involve buying new bits, are there any other man pages or useful documents that might help me figure out what the problem is? Is this a typical bad RAM scenario? I don't expect someone to solve this problem for me, but any pointers to useful information would be appreciated. Thanks, -- Ian
Re: system lock-up - RTFM?
On Tue, 6 Jun 2006, Stuart Henderson wrote: On 6/6/06, Ian Watts <[EMAIL PROTECTED]> wrote: Other than swapping out various bits of hardware, which would involve buying new bits, are there any other man pages or useful documents that might help me figure out what the problem is? Try running GENERIC.MP kernel, on the box I had with a hardware failure (bad cpu) MP usually panicked where GENERIC usually froze. Thanks for the suggestion. I rebooted with /bsd.mp and so far have not been able to lock up the system, despite taxing it as much as possible for an extended period of time. I'll continue running MP for the time being and see if the problem does in fact return. There is a very handy program called memtest86 which can test your memory to see if it is bad. It tells you if it's bad, but it doesn't tell you if it's good. Time permitting, I'll give that go, too. I know the extended test takes quite some time (512MB RAM on my box). Maybe tonight. -- Ian
Re: system lock-up - RTFM?
On Wed, 7 Jun 2006, Shane J Pearson wrote: On 2006.06.07, at 2:42 PM, Breen Ouellette wrote: Telling someone new to memtest86 that it detects bad memory sticks is misleading and could give them a nice headache if their problem is not the stick. If they read the "Troubleshooting Memory Errors" info for memtest86, linked to from the old site and the new site, they'll see that to isolate the defective stick, they can remove, rotate or replace modules to see what device the error follows. Thanks to you guys and "Troubleshooting Memory Errors", which I had read, moving the one 512M stick from slot one to slot two has at the very least made a drastic improvement. slot 1 - hundreds of errors in memtest which resulted in the box powering off after ten minutes or so. slot 2 - eight errors in test 7 of pass 4 of 8 passes. no lock-ups since. I appreciate the discussion. On a critical box and with a little more time, I'd do a thorough series of tests as suggested, and will on this one soon. And next time I'll make sure to get "quality" components... Thanks again for the input, -- Ian
Re: Help to debug Openbsd freezes...
On Mon, 24 Jul 2006 12:10:53 +0200 (CEST) Xavier Mertens <[EMAIL PROTECTED]> spake: Hi Gurus, I'm facing a strange and frustrating problem... I run a box with OpenBSD without problem for a while (>2 years). It's still running 3.5 (ok, ok, don't shoot, it's an old one but upgrades are not easy). It's an i386 1U in a safe environment (colo) See attached dmesg below. For two weeks now, the box freezes randomly... No ping, no activity, capslock/keyboard don't work, no error on the console. The only solution is the "magic-button" :( I tested the disks: ok I replaced memory modules: ok (+memtest) I replaced two fans (for disk cooling) No new software has been installed not upgraded. If I check the symon logs, nothing special appends before the "freeze" Any advice? How old is the box itself? Could be a power supply getting flaky. Without problems for so long, then suddenly this I would lean toward a hardware problem (does not mean its definitely that). I had similar symptoms caused by my CPU overheating. Was the CPU fan one of the fans you replaced or is the server room hotter in mid-summer? -- Ian
Re: HTML Mason Configuration problem on OpenBSD 3.7
First guess is that you have a problem with your handler.pl file. Can
you get it working with a basic sample file?
I haven't used Mason in years, but that's a good place to start (as your
message below points out).
-- Ian
On Fri, 2 Sep 2005, Robin wrote:
Hello,
I am running the base install of OpenBSD 3.7 with the
mod_perl-1.29p0.tgz package as well as
p5-HTML-Mason-1.26.tgz package.
Both packages installed fine (I believe)
However when I go to setup HTML mason, with the
following:
PerlModule HTML::Mason::ApacheHandler
SetHandler perl-script
PerlHandler HTML::Mason::ApacheHandler
I get a 500 Internal Server Error and the following
error in my /var/www/logs/error_log:
[Fri Sep 2 10:38:49 2005] [error] Can't call method
"interp" on an undefined value at
/usr/local/libdata/perl5/site_perl/HTML/Mason/ApacheHandler.pm
line 624.\n
The lines around 624 of ApacheHandler.pm read:
}rethrow_exception $@;
unless (
$self->interp->resolver->can('apache_request_to_comp_path')
){error "The resolver class your Interp
object uses does not implement " . "the
'apache_request_to_comp_path' method. This means that
ApacheHandler " . "cannot resolve
requests. Are you using a handler.pl file created ".
"before version 1.10? Please see the
handler.pl sample " . "that comes with
the latest version of Mason.";
Has anyone seen this error message before and have any
thoughts as to what or where my "undefined value" is?
Thanks,
Rob
Start your day with Yahoo! - make it your home page
http://www.yahoo.com/r/hs
Re: DNS
On Sat, 17 Sep 2005, Steve B wrote:
I'm a little confused on the topic of running Bind on OBSD. I've read the
Secure Architectures book, some material at
http://www.aei.ca/~pmatulis/pub/obsd_pf.html and a few other places. My goal
is to provide DNS to my local LANs and probably act as a caching/forwarding
DNS. What confuses me is 1) where to put my db.wired and db.1.168.192 files,
/var/named/master/
If you just need a local resolver, you won't need to create these files
and configure your server to be authoritative for any zones.
2) what to add to named.conf to put these files to use,
for example,
zone "1.168.192.in-addr.arpa" {
type master;
file "master/db.192.168.1";
};
IF you need this.
and 3) how to configure named.conf for caching/forwarding.
You don't have to do anything to set up a caching nameserver. Just set
named_flags=""
in your /etc/rc.conf.local file to have it start at boot time.
Some articles I've read via Google say the default named.conf is configured
as a caching nameserver and to simply start the named daemon, while others
say the forwarders first and forwarders options must be entered. Could
someone with a little more experience on this topic please point me in the
right direction?
You almost certainly don't need to set it up as a forwarder.
It sounds like you need to familiarize yourself with some of the basics
of DNS and BIND. If all you want is to have a DNS resolver for your
local network, don't do anything except add named_flags="" to your
rc.conf.local file and you're done.
-- Ian
Re: How did they get here?
On Wed, 4 Jan 2006, Craig Skinner wrote: On Wed, Jan 04, 2006 at 05:28:38PM +0100, Joachim Schipper wrote: There was a phpBB2 in one of the paths used. If you have phpBB enabled somewhere, that's a likely attack vector. I noticed that too. phpBB has been used for many sorts of tricks. A recent rundown of the numerous phpBB vulnerabilities can be found here: http://www.linuxsecurity.com/content/view/121073 BTW, is the web server in question being started with the "-u" flag? -- Ian
Re: Will different CPU and RAM matter?
On Thu, 5 May 2005, Niall O'Higgins wrote: > On Thu, May 05, 2005 at 12:10:58PM -0700, Gary Clemans-Gibbon wrote: > > The only thing is that I run 2 HDDs in RAID1 mirror with RAIDFRAME and > > so my kernel is generic + pseudo-device raid (if I remember correctly - > > it was a while ago I last did this and I've lost my notes). > > For such a setup I recommend ditching RAIDFrame for ccd(4), which is > in GENERIC and as such actively maintained. > > The way I see it: cheap, personal mirroring/striping setups, use ccd(4). > Real RAID, use ami(4) or maybe one of those external box things. Except that Gary is using a mirror and ccd(4) claims to provide either concatenated or interleaved disks, not mirroring: "A ccd may be either serially concatenated or interleaved." and as such provides no tolerance for disk failures: "WARNINGS If just one (or more) of the disks in a ccd fails, the entire file system will be lost." I use RAIDframe and haven't used ccd, so I'm just going by what the man page says... -- Ian
Re: Will different CPU and RAM matter?
On Thu, 5 May 2005, Niall O'Higgins wrote: > As of 2005/02/01 ccd(4) man page mentions mirroring. So we now have: > > A ccd may be either serially concatenated, interleaved, or mirrored. > To serially concatenate partitions, specify an interleave factor of 0. > Mirroring configurations require an even number of components. Cool. Is that in 3.7-release? -- Ian
Re: maybe OT 8 year anniversay of Chuck Yerkes death
Thanks for the reminder, Diana. Cheers, Chuck. -- Ian On Mon, 27 Aug 2012, Diana Eichert wrote: I don't think it's off topic but others might. I'm writing this post to remember Chuck Yerkes, a long time contributor to the misc@openbsd list. Chuck died 8 years ago this past weekend while riding his motorcycle. http://web.archive.org/web/20041012235249/http://www.contracostatimes.com/mld/cctimes/news/9511974.htm http://marc.theaimsgroup.com/?l=openbsd-misc&m=109385676632581&w=2 Just wanted to remember you Chuck, take it easy wherever you are. diana
