Re: [CentOS] CentOS 7: software RAID 5 array with 4 disks and no spares?

2015-02-19 Thread Chris Murphy
On Thu, Feb 19, 2015 at 3:28 AM, Niki Kovacs i...@microlinux.fr wrote: Le 19/02/2015 11:03, Chris Murphy a écrit : This is a false dichotomy. I reject it. There's too much fact to the contrary. My mom has done an OS installation, she is most definitely not an admin. I'd say your mom

Re: [CentOS] CentOS 7: software RAID 5 array with 4 disks and no spares?

2015-02-19 Thread Chris Murphy
to change both user login and encryption passphrase passwords, to keep them in sync, and remove the old one. And currently LUKS has this 8 slot limit, which is probably not a big problem, but might be a sufficient barrier in enough cases that this needs extending. And so on... -- Chris Murphy

Re: [CentOS] CentOS 7: software RAID 5 array with 4 disks and no spares?

2015-02-19 Thread Chris Murphy
things right, they really face plant in other areas. Most of their open source effort is languishing. -- Chris Murphy ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] CentOS 7: software RAID 5 array with 4 disks and no spares?

2015-02-19 Thread Chris Murphy
On Thu, Feb 19, 2015 at 1:38 PM, Kahlil Hodgson kahlil.hodg...@dealmax.com.au wrote: On 20 February 2015 at 05:25, Chris Murphy li...@colorremedies.com wrote: I'd say your mom is an admin in the sense that chickens fly and horses swim. It's a confusing analogy. Chickens don't fly. Horses do

Re: [CentOS] CentOS 7: software RAID 5 array with 4 disks and no spares?

2015-02-18 Thread Chris Murphy
value in the lower left hand corner. -- Chris Murphy ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] CentOS 7: software RAID 5 array with 4 disks and no spares?

2015-02-18 Thread Chris Murphy
that the user expectations re-align with the end goal in mind, not how to get there. -- Chris Murphy ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] CentOS 7: software RAID 5 array with 4 disks and no spares?

2015-02-18 Thread Chris Murphy
On Wed, Feb 18, 2015 at 3:37 PM, Niki Kovacs i...@microlinux.fr wrote: Le 18/02/2015 23:12, Chris Murphy a écrit : installer is organized around mount points is correct, and what gets mounted on mount points? Volumes, not partitions. Says who? Because it's ambiguous. A partition might

Re: [CentOS] CentOS 7: software RAID 5 array with 4 disks and no spares?

2015-02-18 Thread Chris Murphy
a good reason for it to be in X slot always, for everyone, including anticipating future use, then that's a feature request and it ought to get fixed. But if it's a specific use case, well yeah you get to pre-partition and then install. -- Chris Murphy

Re: [CentOS] CentOS 7: software RAID 5 array with 4 disks and no spares?

2015-02-18 Thread Chris Murphy
. But for general purpose data, it's nice. It'll use different sized drives in a raid56, no fuss, no having to tell it how to do that. Online addition of yet another (unlike sized) drive and it just starts using it with a single 'btrfs device add' command. No restripe/resilver needed. -- Chris Murphy

Re: [CentOS] Intermittent problem, likely disk IO related - mptscsih: ioc0: attempting task abort!

2015-02-17 Thread Chris Murphy
explanation. If there's no recent software changes, then it must be hardware. -- Chris Murphy ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] Intermittent problem, likely disk IO related - mptscsih: ioc0: attempting task abort!

2015-02-17 Thread Chris Murphy
a hardware problem given the numerous identical setups not having this problem. But, seeing as it panics every 30-40 hours, it can hardly be much worse with a new kernel running for a couple days... but my bet is there'd be no change. -- Chris Murphy

Re: [CentOS] Intermittent problem, likely disk IO related - mptscsih: ioc0: attempting task abort!

2015-02-17 Thread Chris Murphy
On Tue, Feb 17, 2015 at 7:34 PM, Jason Pyeron jpye...@pdinc.us wrote: -Original Message- From: Chris Murphy Sent: Tuesday, February 17, 2015 20:48 On Tue, Feb 17, 2015 at 7:54 AM, Jason Pyeron wrote: I'd post the entire dmesg somewhere http://client.pdinc.us/panic

Re: [CentOS] Intermittent problem, likely disk IO related - mptscsih: ioc0: attempting task abort!

2015-02-17 Thread Chris Murphy
or replace cables, usually it's the connectors that are faulty not the cable itself. Or replace the drive. Chris Murphy ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] Centos 7.0 and mismatched swap file

2015-02-16 Thread Chris Murphy
on a many disk linear/concat arrangement. This extends to using raid1 + linear instead of raid10 if some redundancy is desired. -- Chris Murphy ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] Centos 7.0 and mismatched swap file

2015-02-16 Thread Chris Murphy
On Mon, Feb 16, 2015 at 10:21 AM, Chris Murphy li...@colorremedies.com wrote: On Mon, Feb 16, 2015 at 6:47 AM, Eliezer Croitoru elie...@ngtech.co.il wrote: I am unsure I understand what you wrote. XFS will create multiple AG's across all of those devices, Are you comparing md linear

Re: [CentOS] Centos 7.0 and mismatched swap file

2015-02-16 Thread Chris Murphy
drive at a time (unless using one of the striping raid-like profiles). -- Chris Murphy ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] Centos 7.0 and mismatched swap file

2015-02-16 Thread Chris Murphy
all of them. It's often quite a bit better performing than raid0 specifically because of the many thousands of small files in many directories workload. -- Chris Murphy ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo

Re: [CentOS] Centos 7.0 and mismatched swap file

2015-02-15 Thread Chris Murphy
I'd like to think you will want to avoid the use of swap at almost all costs because it'll slow the system down by a lot. So really you don't need 1:1 for a server that isn't using suspend to disk. You only need enough swap so that things can chug (slowly) without totally imploding, giving you

Re: [CentOS] Centos 7.0 and mismatched swap file

2015-02-15 Thread Chris Murphy
A neat trick for a server with less than idea memory requirement compared to the storage it has, is a pile of swap on an SSD. Having xfs_repair use swap on SSD is a lot faster than its fallback behavior when memory is low and there's no swap. Whereas swapping to a HDD... brutal. Chris Murphy

Re: [CentOS] CentOS 7 : create RAID arrays manually using mdadm --create ?

2015-02-10 Thread Chris Murphy
On Tue, Feb 10, 2015 at 9:12 PM, John R Pierce pie...@hogranch.com wrote: On 2/10/2015 6:54 PM, Chris Murphy wrote: Why I avoid swap on md raid 1/10 is because of the swap caveats listed under man 4 md. Is possible for a page in memory to change between the writes to the two md devices

Re: [CentOS] Another Fedora decision

2015-02-10 Thread Chris Murphy
a $40 book on Amazon, chances are each author is making much less than $1 in royalties per book. So who's being ripped off the most by downloading a bootleg PDF? The publisher. The authors aren't being injured that much. -- Chris Murphy ___ CentOS mailing

Re: [CentOS] Another Fedora decision

2015-02-10 Thread Chris Murphy
like this, then I get to say you sir, may kindly kiss my ass. Legal point 7: You are unproductively using your own, and other's, time, interest and energy. So are you, and this is your informal invitation to stop. -- Chris Murphy ___ CentOS mailing

Re: [CentOS] CentOS 7 : create RAID arrays manually using mdadm --create ?

2015-02-10 Thread Chris Murphy
On Tue, Feb 10, 2015 at 1:13 PM, Les Mikesell lesmikes...@gmail.com wrote: On Tue, Feb 10, 2015 at 1:54 PM, Chris Murphy li...@colorremedies.com wrote: - I would not put swap on an md device, I'd just put a plain swap partition on each device; first create two swap mountpoints, If one

Re: [CentOS] Another Fedora decision

2015-02-10 Thread Chris Murphy
bought an ebook, not merely renting it, then I should have the right to give that ebook to a library, school, friend, leave it in an estate to children. And quite a number of publishers deny this doctrine applies to ebooks. Not good. -- Chris Murphy

Re: [CentOS] CentOS 7 : create RAID arrays manually using mdadm --create ?

2015-02-10 Thread Chris Murphy
additional swap, making sure each is on its own drive. -- Chris Murphy ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] CentOS 7 : create RAID arrays manually using mdadm --create ?

2015-02-09 Thread Chris Murphy
On my first attempt doing this with 2x disk, GPT partition scheme, precreated md devices, and LVM, rebooting, upon entering the installer and choosing a language, I get a crash. Looks like it's this bug: https://bugzilla.redhat.com/show_bug.cgi?id=1103452 Chris Murphy

Re: [CentOS] CentOS 7 : create RAID arrays manually using mdadm --create ?

2015-02-09 Thread Chris Murphy
to understand the installer's UI is mount point centric, it kinda deemphasizes the specifics of how that mount point gets assembled. -- Chris Murphy ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos

[CentOS] Another Fedora decision

2015-02-05 Thread Chris Murphy
easier to use. -- Chris Murphy ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] Another Fedora decision

2015-02-05 Thread Chris Murphy
) on sandboxing functionality and constant policy adjustments over the past few years. If it were worth it, it'd be a lot easier to just say, shift the burden to the user, and make them pick a 10 character password. Chris Murphy ___ CentOS mailing list

Re: [CentOS] SSH Remote Execution - su?

2010-03-04 Thread Chris Murphy
I used to manage ~150 Linux desktop and would have to do one off scripts to make updates. Fortunately I found Puppet and now I never have to do things like this any more but here's the Bash/Expect combo that I used to use: chris$ ./mass_copy.sh: #!/bin/sh export ROOTPW='secret1' export

Re: [CentOS] Excessive NFS operations

2009-09-10 Thread Chris Murphy
lheck...@users.sourceforge.net wrote: Do you have anything running that would try to read all the files and build a search index - like beagle? There's also the nightly run of updatedb but that just reads the filenames and normally nfs mounts are excluded. There is no package beagle

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