Thanks for pointing that out.  I've dealt with too many filesystems over the
years, and they are all starting to blur together :(

On Fri, Sep 2, 2011 at 12:37 PM, John Thompson <jthompson...@gmail.com>wrote:

> Well there ya go.  I stand corrected.  I was probably getting confused with
> "shrinking" vs. "extending".  I think to shrink you have to unmount.
>
> My mistake.
>
>
> On Fri, Sep 2, 2011 at 12:33 PM, Michael Pflugfelder <
> mpflugfel...@ratex.com> wrote:
>
>> With RedHat 5, LVM & EXT3 filesystems, you can do online resizing.
>>
>> First, you need to increase the size of the logical volume with
>> "lvextend".
>> Then you need to resize the filesystem with "resize2fs".
>>
>> I did it a few weeks ago on a virtual machine without users noticing any
>> difference.
>>
>>
>>
>> -----Original Message-----
>> From: u2-users-boun...@listserver.u2ug.org [mailto:
>> u2-users-boun...@listserver.u2ug.org] On Behalf Of John Thompson
>> Sent: Friday, September 02, 2011 9:34 AM
>> To: U2 Users List
>> Subject: Re: [U2] Red Hat Enterprise Linux 64 bit and Universe 11.1.4 -
>> Experiences?
>>
>> I believe with EXT4, JFS, or XFS filesystems you can expand them only -
>> while it is mounted.
>>
>> However if you are running RHEL 5 with EXT3, then you have to unmount the
>> partition before you expand.  JFS is of course what AIX uses.  You can use
>> JFS in Linux, if you set your filesystems up that way originally.
>>
>> I also assume you are using LVM along with a filesystem to manage
>> things...
>>
>> See these notes:
>>
>> http://en.gentoo-wiki.com/wiki/LVM
>> http://tldp.org/HOWTO/LVM-HOWTO/extendlv.html
>>
>> http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/6/html/Storage_Administration_Guide/ext4grow.html
>>
>> By the way, I've always thought Gentoo and Ubuntu had great documentation.
>>  Red Hat is getting better...
>>
>> In this case, the filesystem and lvm2 utilities should be 99% the same
>> across all Linux distro's, so you can find out what you need to know on
>> Gentoo or Ubuntu docs, even though its RHEL.  That is not always the case...
>>
>> As far as the cost goes... you are probably right, since, I don't have the
>> guts to not pay for Linux support and just download CentOS.
>> http://www.centos.org/
>>
>> However, for us, its more a matter of flexibility and standardization.  I
>> have Linux machines (mainly Ubuntu) doing critical business functions
>> already, and if I can have one less operating system to worry about, thats
>> less headache for me.
>>
>> Plus its way cheaper for me to set up a development machine on the fly on
>> my workstation using CentOS.  Its nigh impossible to do that with AIX.
>>
>> AIX is great, until you need to use an open source piece of software, then
>> things get tricky.
>>
>> The best answer I found to that problem was this:
>>
>> http://pware.hvcc.edu/
>>
>> But its maintained by a fellow at a college university, and if he ever
>> gets sick of doing that... then I'm stuck with going through rpm hell.
>>
>> We have a pretty barebones AIX setup with zero LPAR's and local disk on
>> one P550.
>> So yeah I agree, on paper the cost is almost a wash, but, for us its all
>> of the costs that I can't really show on paper very well...
>>
>>
>> On Thu, Sep 1, 2011 at 11:48 PM, Dan Fitzgerald <dangf...@hotmail.com
>> >wrote:
>>
>> >
>> > I work with both RHEL & AIX, and I'm not sure that you save a whole
>> > bunch of money by going Linux anymore. I won't p0ut [AD/} in here,
>> > because I'm not a vendor, nor do I have a business relationship with
>> > one (anymore). But I was recently investigating making this same move,
>> > and my IBM vendor proposed replacing my 2 p570's (4 LPARS each) with a
>> > Blade H center, populated with 2
>> > PS701 Blades, for a little under $75K, including 3-year hardwarew
>> > warranty &
>> > 3 year AIX software 24x7 4Hr onsite maintenance. Additional Power
>> > blades were $14K, but wintel blades could be had for about $7K each,
>> > fitting in the same enclosure. "Membership" for a comparable RH
>> > installation over 3 years was about that same $75K, before you even
>> > buy hardware. Of course, you can go without software support on linux,
>> > but you'd better be very good at it, especially if your implementation
>> is at all non-standard (um, U2).
>> >
>> > I also note that one of the most common sysadmin procedures I execute
>> > is expanding file systems as data footprints grow. On AIX, I allocate
>> > the storage, do a cfgmgr, then issue the appropriate chfs command. In
>> > Linux, to expand a file system means taking the volume offline:
>> > downtime. P.S.: If I'm wrong about that, please tell me how to do it,
>> thanks.
>> >
>> > > Date: Fri, 2 Sep 2011 00:28:57 +0200
>> > > From: u...@glennsallis.de
>> > > To: u2-users@listserver.u2ug.org
>> > > Subject: Re: [U2] Red Hat Enterprise Linux 64 bit and Universe
>> > > 11.1.4 -
>> >     Experiences?
>> > >
>> > > Hi John,
>> > >
>> > > I think you will find it to be a positive move, both technically and
>> > > financially!
>> > >
>> > > Recently I have done a fair bit of testing for a customer who are
>> > > going to be migrating to 64 Bit Red Hat from a non-AIX variant of
>> > > Unix and I cannot say I stumbled across any big issues. I was using
>> > > previous versions of 11.1 for the tests.
>> > >
>> > > Do plenty of trials and tests to identify any potential issues, and
>> > > I am pretty confident you will report back with positive news.
>> > >
>> > > Regards
>> > > Glenn
>> > >
>> > >
>> > >
>> > > Am 02.09.2011 00:02, schrieb John Thompson:
>> > > > I'm looking to migrate from AIX 5.3 to RHEL.  Basically because
>> > > > IBM is putting the hatchet to "regular" support on AIX 5.3 in May
>> 2012.
>> > > >
>> > > > Has anyone had any experiences/challenges running Universe 11.1.4
>> > > > on
>> > Red Hat
>> > > > Enterprise 6 - 64bit?
>> > > >
>> > > > I'm guessing I may get crickets on this one, since accroding to U2
>> > > > Techconnect, 11.1.4 has only been out about a week...
>> > > >
>> > > > https://u2tc.rocketsoftware.com/buildmatrix.asp
>> > > >
>> > > > Kudos to Rocket for getting it to run on RHEL 6.
>> > > >
>> > > > I'm just scared if I go with RHEL 5, then I'll be in the
>> "obsolescence"
>> > boat
>> > > > two years from now.
>> > > >
>> > >
>> > > _______________________________________________
>> > > U2-Users mailing list
>> > > U2-Users@listserver.u2ug.org
>> > > http://listserver.u2ug.org/mailman/listinfo/u2-users
>> >
>> > _______________________________________________
>> > U2-Users mailing list
>> > U2-Users@listserver.u2ug.org
>> > http://listserver.u2ug.org/mailman/listinfo/u2-users
>> >
>>
>>
>>
>> --
>> John Thompson
>> _______________________________________________
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>>
>
>
>
> --
> John Thompson
>



-- 
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