Greetings,
On Thu, Apr 11, 2013 at 2:30 PM, santosh venkataswamy wrote:
>
>
> Hi,
> How to download Cluster SW and how to configure clustering in CentOS.
> With Regards and good wishes.
>
> V.SANTOSH
>
What type of cluster are you referring to: HA or HPC?
Accordingly the answer will depend
Alexander Dalloz, true, but I'm only a system administrator guy who do the
work that tells the boss... ;)
Kai Schaetzl, yes! you are right, I should have said this in the beginning!
Sorry, it's because of the hurry... ;)
Thank's for all your answer! I wrote a mail to my provider. I keep you
infor
On 4/11/2013 10:48 PM, Keith Keller wrote:
> (As an aside, how
> does the kernel handle more than 26 hard drive devices? sdaa? sdA?)
sdaa, sdab, sdac, ... sdba, sdbb, sdbc etc etc.
and yes, if you have 40+ disks as JBOD, its a bloody mess, especially if
linux udev starts getting creative.
On 2013-04-12, David Miller wrote:
>
> On Apr 11, 2013, at 5:25 PM, John R Pierce wrote:
>
>> yeah, until a disk fails on a 40 disk array and the chassis LEDs on the
>> backplane don't light up to indicate which disk it is and your
>> operations monkey pulls the wrong one and crash the whole ra
On 04/11/2013 06:36 PM, m.r...@5-cent.us wrote:
> I'm setting up this huge RAID 6 box. I've always thought of hot spares,
> but I'm reading things that are comparing RAID 5 with a hot spare to RAID
> 6, implying that the latter doesn't need one. I *certainly* have enough
> drives to spare in this R
On Apr 11, 2013, at 5:25 PM, John R Pierce wrote:
> On 4/11/2013 5:04 PM, David C. Miller wrote:
>> The LSI 9200's I use are nothing more than a dumb $300 host bus adapter. No
>> RAID levels or special features. I prefer to NOT use hardware RAID
>> controllers when I can. With a generic HBA th
2013/4/12 Michael H. Warfield
> On Fri, 2013-04-12 at 09:28 +0800, Jaze Lee wrote:
> > 2013/4/12 Michael H. Warfield
> >
> > > Hello,
> > >
> > > I may be totally off base here but...
> > >
> > > On Thu, 2013-04-11 at 18:06 +0800, Jaze Lee wrote:
> > > > hello,
> > > >i met a problem in conf
On 2013-04-12, Miranda Hawarden-Ogata wrote:
> RAID6 means you can handle 2 disk failures, but the third one will drop
> your array, if I'm remembering correctly. And the larger the number of
> disks, the higher the chance that you'll have disk failures...
Yes, and yes. But different configura
On Fri, 2013-04-12 at 09:28 +0800, Jaze Lee wrote:
> 2013/4/12 Michael H. Warfield
>
> > Hello,
> >
> > I may be totally off base here but...
> >
> > On Thu, 2013-04-11 at 18:06 +0800, Jaze Lee wrote:
> > > hello,
> > >i met a problem in configuratiion of ipv6 gw in my box
> > > i install cen
On 2013/04/11 10:36 AM, Joseph Spenner wrote:
>
> From: John R Pierce
> To: centos@centos.org
> Sent: Thursday, April 11, 2013 1:24 PM
> Subject: Re: [CentOS] RAID 6 - opinions
>
>
> On 4/11/2013 12:30 PM, m.r...@5-cent.us wrote:
>>> Ok, listening to all of th
2013/4/12 Michael H. Warfield
> Hello,
>
> I may be totally off base here but...
>
> On Thu, 2013-04-11 at 18:06 +0800, Jaze Lee wrote:
> > hello,
> >i met a problem in configuratiion of ipv6 gw in my box
> > i install centos 6.3 (64 bit) on my boxs, which have four netcard.
> > i use a strai
On 4/11/2013 5:04 PM, David C. Miller wrote:
> The LSI 9200's I use are nothing more than a dumb $300 host bus adapter. No
> RAID levels or special features. I prefer to NOT use hardware RAID
> controllers when I can. With a generic HBA the hard drives are seen raw to
> the OS. You can use smart
or while it's in single user mode with the read only /; do a mount -o
remount / to get the filesystem into read write, edit your fstab file
and reboot.
On Thu, Apr 11, 2013 at 7:36 PM, Jason T. Slack-Moehrle
wrote:
> Hello All,
>
> So My Drobo finished formatting and I added an entry to fstab for
- Original Message -
> From: "Keith Keller"
> To: centos@centos.org
> Sent: Thursday, April 11, 2013 4:34:20 PM
> Subject: Re: [CentOS] RAID 6 - opinions
>
> On 2013-04-11, David C. Miller wrote:
> >
> > Just for reference, I have a 24 x 2TB SATAIII using CentOS 6.4
> > Linux MD RAID6
> why not try it out?
>
> as said:
> ANY linux with a terminal is enough to mount the rootfs
> and edit /ect/fstab with vi or whatever
>
> P.S: use the mailing-list instead off-list replies
>
> Am 12.04.2013 01:42, schrieb Jason T. Slack-Moehrle:
> > If I have a CentOS 6.4 DVD is that the 'Rescue i
On Thu, 11 Apr 2013 16:36:44 -0700
Jason T. Slack-Moehrle wrote:
> I have made a mistake
>
> I cannot fix it because trying to edit fstab results in a "read only file
> system message"
>
> Can anyone help me learn how to recover?
Boot from a recovery disk (live CD, whatever) and fix the problem.
Hello All,
So My Drobo finished formatting and I added an entry to fstab for it and
now I cannot boot the machine. I get an error about
fsck.ext3: is a directory while trying to open /drobo
and then a mention of a valid super block
I had mounted the Drobo as /drobo and in 'fstab' I copied the li
On 2013-04-11, David C. Miller wrote:
>
> Just for reference, I have a 24 x 2TB SATAIII using CentOS 6.4 Linux MD RAID6
> with two of those 24 disks as hotspares. The drives are in a Supermicro
> external SAS/SATA box connected to another Supermicro 1U computer with an
> i3-2125 CPU @ 3.30GHz a
- Original Message -
> From: "Reindl Harald"
> To: "CentOS mailing list"
> Cc: "David C. Miller"
> Sent: Thursday, April 11, 2013 4:17:18 PM
> Subject: Re: [CentOS] RAID 6 - opinions
>
>
>
> Am 12.04.2013 01:13, schrieb David C. Miller:
> > dd if=/dev/zero of=/backup/5GB.img count=50
- Original Message -
> From: "Joseph Spenner"
> To: "CentOS mailing list"
> Sent: Thursday, April 11, 2013 1:36:29 PM
> Subject: Re: [CentOS] RAID 6 - opinions
>
>
>
>
>
> From: John R Pierce
> To: centos@centos.org
> Sent: Thursday, April 11, 2013
On 4/11/2013 1:20 PM, m.r...@5-cent.us wrote:
> Followup comment: I created the two RAID sets, then started to create the
> volume sets... and realized I didn't know if it was*possible*, much less
> desirable, to have a volume set that spanned two RAID sets. Talked it over
> with my manager, and I
On 4/11/2013 1:36 PM, Joseph Spenner wrote:
> But isn't that one of the benefits of RAID6? (not much degraded/latency
> effect during a rebuild, less impact on performance during rebuild, so longer
> times are acceptable?)
trouble comes in 3s.
--
john r pierce
From: John R Pierce
To: centos@centos.org
Sent: Thursday, April 11, 2013 1:24 PM
Subject: Re: [CentOS] RAID 6 - opinions
On 4/11/2013 12:30 PM, m.r...@5-cent.us wrote:
>> Ok, listening to all of this, I've also been in touch with a tech from the
>> vendor*,
On 4/11/2013 12:30 PM, m.r...@5-cent.us wrote:
> Ok, listening to all of this, I've also been in touch with a tech from the
> vendor*, who had a couple of suggestions: first, two RAID sets with two
> global hot spares.
I would test how long a drive rebuild takes on a 20 disk RAID6.I
suspect,
m.r...@5-cent.us wrote:
> Ok, listening to all of this, I've also been in touch with a tech from the
> vendor*, who had a couple of suggestions: first, two RAID sets with two
> global hot spares.
>
> I've just spoken with my manager, and we're going with that, then one of
> the tech's other sugges
Slight Clarification on v6 addressing...
On Thu, 2013-04-11 at 15:38 -0400, Michael H. Warfield wrote:
> Those may be routed between your machines but may not be routed on the
> global net either as a source or destination address. Your machines
> should also be given "link local" addresses whic
Hello,
I may be totally off base here but...
On Thu, 2013-04-11 at 18:06 +0800, Jaze Lee wrote:
> hello,
>i met a problem in configuratiion of ipv6 gw in my box
> i install centos 6.3 (64 bit) on my boxs, which have four netcard.
> i use a straight-through cable to connect centosv0:netcard-2
John R Pierce wrote:
> On 4/11/2013 8:36 AM, m.r...@5-cent.us wrote:
>> I'm setting up this huge RAID 6 box. I've always thought of hot spares,
>> but I'm reading things that are comparing RAID 5 with a hot spare to
>> RAID 6, implying that the latter doesn't need one. I*certainly* have
enough
>>
On 2013-04-11, Joseph Spenner wrote:
>>From: "m.r...@5-cent.us"
>
>>To: CentOS mailing list
>>Sent: Thursday, April 11, 2013 8:36 AM
>>Subject: [CentOS] RAID 6 - opinions
>
>>
>>I'm setting up this huge RAID 6 box. I've always thought of hot spares,
>>but I'm reading things that are comparing
On 4/11/2013 8:36 AM, m.r...@5-cent.us wrote:
> I'm setting up this huge RAID 6 box. I've always thought of hot spares,
> but I'm reading things that are comparing RAID 5 with a hot spare to RAID
> 6, implying that the latter doesn't need one. I*certainly* have enough
> drives to spare in this RAI
On 04/11/2013 06:35 AM, Woehrle Hartmut SBB CFF FFS (Extern) wrote:
>> Hi,
>> How to download Cluster SW and how to configure clustering in CentOS.
>> With Regards and good wishes.
>>
>> V.SANTOSH
>
> What do you want to cluster (disks, services, data,...)
> How (failover, loadbalancing, mast
On Thu, Apr 11, 2013 at 10:59 AM, nan del bosc wrote:
> ...
> This is a Virtual Server from 1and1, I cannot access the BIOS...
>
> any other idea?
>
If this is a virtual server, the actual hardware may just be running
other virtual servers and you're not getting any resources. If that's
true, n
On 04/11/2013 11:36 AM, m.r...@5-cent.us wrote:
> I'm setting up this huge RAID 6 box. I've always thought of hot spares,
> but I'm reading things that are comparing RAID 5 with a hot spare to RAID
> 6, implying that the latter doesn't need one. I *certainly* have enough
> drives to spare in this R
Nan del bosc wrote on Thu, 11 Apr 2013 17:59:58 +0200:
> This is a Virtual Server from 1and1,
You should have said this in the beginning!
Can you be sure that this is a standard CentOS and not a version catered
by the provider? It may just be a problem with the virtualizing software.
You should
nan del bosc wrote:
> Thank's for your quick answer!
>
> I can't use ipmi in this machine...
>
> # modprobe ipmi_si
> FATAL: Error inserting ipmi_si
> (/lib/modules/2.6.18-194.26.1.el5xen/kernel/drivers/char/ipmi/ipmi_si.ko):
> No such device
Um, no: yum install OpenIPMI
service ipmi start
ll /de
Am 11.04.2013 17:36, schrieb nan del bosc:
> Hi to all!
>
> We're using CentOS 5.5 64bits for our Plesk 11.
That's insane! Why on earth do you run a 2,5 years old unpatched public
system? You are asking for trouble and innocent third will be the
victims of your hacked system.
> This week we had
> We're using CentOS 5.5 64bits for our Plesk 11.
>
> This week we had the following problem 3 times...
>
> Suddenly, the server stops responding in all services (SSH, Apache,
> Postfix, ...) but ping works!
>
> After wait a few minutes (or 2 hours some times) the server continues
> unresponsive
From: Joseph Spenner
> A RAID5 with a hot spare isn't really the same as a RAID6. For those not
> familiar with this, a RAID5 in degraded mode (after it lost a disk) will
> suffer
> a performance hit, as well as while it rebuilds from a hot spare. A RAID6
> after
> losing a disk will not s
On Thu, Apr 11, 2013 at 10:36 AM, nan del bosc wrote:
> Hi to all!
>
> We're using CentOS 5.5 64bits for our Plesk 11.
>
> This week we had the following problem 3 times...
>
> Suddenly, the server stops responding in all services (SSH, Apache,
> Postfix, ...) but ping works!
>
> After wait a few
Thank's for your quick answer!
I can't use ipmi in this machine...
# ipmitool sel
Could not open device at /dev/ipmi0 or /dev/ipmi/0 or /dev/ipmidev/0: No
such file or directory
Get SEL Info command failed
# modprobe ipmi_si
FATAL: Error inserting ipmi_si
(/lib/modules/2.6.18-194.26.1.el5xen/ker
>From: "m.r...@5-cent.us"
>To: CentOS mailing list
>Sent: Thursday, April 11, 2013 8:36 AM
>Subject: [CentOS] RAID 6 - opinions
>
>I'm setting up this huge RAID 6 box. I've always thought of hot spares,
>but I'm reading things that are comparing RAID 5 with a hot spare to RAID
>6, implying th
nan del bosc wrote:
> Hi to all!
>
> We're using CentOS 5.5 64bits for our Plesk 11.
>
> This week we had the following problem 3 times...
>
> Suddenly, the server stops responding in all services (SSH, Apache,
> Postfix, ...) but ping works!
>
> After wait a few minutes (or 2 hours some times) the
I'm setting up this huge RAID 6 box. I've always thought of hot spares,
but I'm reading things that are comparing RAID 5 with a hot spare to RAID
6, implying that the latter doesn't need one. I *certainly* have enough
drives to spare in this RAID box: 42 of 'em, so two questions: should I
assign on
Hi to all!
We're using CentOS 5.5 64bits for our Plesk 11.
This week we had the following problem 3 times...
Suddenly, the server stops responding in all services (SSH, Apache,
Postfix, ...) but ping works!
After wait a few minutes (or 2 hours some times) the server continues
unresponsive until
Thanks for the notes John, let me go through this process again.
On Thu, Apr 11, 2013 at 3:37 AM, John Doe wrote:
> From: Jason T. Slack-Moehrle
> > I can get through the install but Zimbra wont start. It says it started,
> > but didn't I get LDAP errors, Sasl errors, AV and antispam. I work
Denniston, Todd A CIV NAVSURFWARCENDIV Crane wrote:
>> From: m.r...@5-cent.us [mailto:m.r...@5-cent.us]
>> Frank Cox wrote:
>> > On Tue, 9 Apr 2013 10:19:33 -0400
>> > m.r...@5-cent.us wrote:
>> >
>> >> Hmmm... didn't see it mounted, but I'll try more tonight. Last night
>> >> included a) playing w
> -Original Message-
> From: m.r...@5-cent.us [mailto:m.r...@5-cent.us]
> Sent: Tuesday, April 09, 2013 12:21
> To: CentOS mailing list
> Subject: Re: [CentOS] floppy drives
>
> Frank Cox wrote:
> > On Tue, 9 Apr 2013 10:19:33 -0400
> > m.r...@5-cent.us wrote:
> >
> >> Hmmm... didn't see i
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From: Jason T. Slack-Moehrle
> I can get through the install but Zimbra wont start. It says it started,
> but didn't I get LDAP errors, Sasl errors, AV and antispam. I worked though
> them a lot yesterday but I still can not get the mta started and nothing
> starts listening on 443 either. I have
> Hi,
> How to download Cluster SW and how to configure clustering in CentOS.
>With Regards and good wishes.
>
>V.SANTOSH
What do you want to cluster (disks, services, data,...)
How (failover, loadbalancing, master-slave,...)
Hartmut
___
CentOS mail
From: Jason T. Slack-Moehrle
> So I run:
> # parted
> GNU Parted 2.1
> Using /dev/sda
> Welcome to GNU Parted! Type 'help' to view a list of commands.
> (parted) select /dev/sdg
> Using /dev/sdg
> (parted) print
> Model: DROBO DroboPro (scsi)
> Disk /dev/sdg: 17.6TB
> Sector size (logical/physical
hello,
i met a problem in configuratiion of ipv6 gw in my box
i install centos 6.3 (64 bit) on my boxs, which have four netcard.
i use a straight-through cable to connect centosv0:netcard-2 and
centosv1:netcard2
the topology is this:
client c(windows xp) <-->centosv0:netcard-3 <--> centosv0:netc
Hi,
How to download Cluster SW and how to configure clustering in CentOS.
With Regards and good wishes.
V.SANTOSH
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Bazy [baz...@gmail.com] wrote:
>
> I've just read how GoDaddy upgraded its servers to CentOS6 and in the
> article they wrote about "NFS client caching".
> Can anyone point me to documentation they used to implement NFS client
> caching? Tips and tricks are welcome :-)
I guess they are using FS-Ca
Hello,
I've just read how GoDaddy upgraded its servers to CentOS6 and in the
article they wrote about "NFS client caching".
Can anyone point me to documentation they used to implement NFS client
caching? Tips and tricks are welcome :-)
Cheers!
___
Ce
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