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debian-user-digest Digest V2007 #2096

From: <debian-user-digest-request(at)lists.debian.org>
Date: Sat Aug 04 2007 - 09:22:27 EDT


Content-Type: text/plain

debian-user-digest Digest Volume 2007 : Issue 2096

Today's Topics: 

  Re: Re: Adaptec 2100s                 [ fabrizio  ]
  Re: Adaptec 2100s                     [ fabrizio  ]
  Re: Blurry fonts in OpenOffice and q  [ Alan Ianson  ]
  Re: converting file system            [ Andrew Sackville-West  ]
  Re: Opinions XFS                      [ =?ISO-8859-1?Q?J=F6rg-Volker_Peetz? ]
  Transitioning to 64bit, is it worth   [ Alan Chandler  ]
  Re: Transitioning to 64bit, is it wo  [ Marko Randjelovic  ]
  Re: Transitioning to 64bit, is it wo  [ Ron Johnson  ]
  Re: Opinions XFS                      [ Ron Johnson  ]
  Re: Opinions XFS                      [ Ron Johnson  ]
  Transitioning to 64bit, is it worth   [ pinniped 

Date: Sat, 04 Aug 2007 07:47:34 +0200


From: fabrizio <f.peder@gmail.com>


To: debian-user@lists.debian.org


Subject: Re: Re: Adaptec 2100s 

Message-ID: <46B412F6.90607@gmail.com>
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i report the "i20" boot sequence... i think it can be helpful:



i20: checking for pci i20 controllers...
iop0: controller found (0000:00:09.0)


iop0: installed at irq 5


i20: iop0: activating i20 controller...


i20: iop0: this may take a few minutes if there are many devices
iop0: HRT has 1 entris of 16 bytes each


adapter 00000012: tid 0000:[HPC*]:PCI 1: bus 1 device 22 function 0
i20: iop0: controller added



loading Adaptec i20 raid: version 2.4 build 5go
detecting adaptec i20 raid controllers


PCI: unable to reserve mem region #1:...... for device 0000:00:09.0
dpti: adpt_confighba: pci request region failed
could not init an i20 raid device


Do you need help?X

Date: Sat, 04 Aug 2007 07:53:36 +0200


From: fabrizio <f.peder@gmail.com>


To: cirilo_bernardo@yahoo.com


Cc: debian-user@lists.debian.org


Subject: Re: Adaptec 2100s 

Message-ID: <46B41460.3000402@gmail.com>
Content-Type: text/plain; charset=ISO-8859-15; format=flowed

Do you need more help?X

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i dumped into 'busybox' but i cant find /etc/mkinitramfs...



in /etc i can only find: modprobe.d, scsi_id.config udev.



thanks. Fabrizio.



Date: Fri, 3 Aug 2007 22:54:10 -0700


From: Alan Ianson <agianson@gmail.com>


To: debian-user@lists.debian.org


Subject: Re: Blurry fonts in OpenOffice and qt4 appliations
Message-Id: <200708032254.10185.agianson@gmail.com>
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  charset="iso-8859-1"


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On Fri August 3 2007 21:50, Andrei Popescu wrote:

> On Fri, Aug 03, 2007 at 07:15:39PM -0700, Alan Ianson wrote:
> > On Fri August 3 2007 12:48, Vasil Benov wrote:
> > > Hi all,
> > >
> > > The fonts in OpenOffice and qt4(skype 1.4 beta) applications are
> > > blurry. Has anyone encountered the same problem?
> > > There is a thread on the Ubuntu mailing list, but it does not offer any
> > > solution.
> >
> > I noticed that too a while ago, one of the fonts I was using (sorry, I
> > forget which one) seemed to have a rainbow color effect to it for reasons
> > unknown. I changed the system font to something else and it has looked
> > fine since.
>
> LCD or CRT monitor? Have a look at the sub-pixel rendering option
> (dpkg-reconfigure fontconfig-config).

LCD, it was on my laptop. Thanks, I'll run that and have a look.


Can we help you?X

Date: Fri, 3 Aug 2007 23:22:16 -0700


From: Andrew Sackville-West <andrew@farwestbilliards.com>
To: debian-user@lists.debian.org


Subject: Re: converting file system


Message-ID: <20070804062216.GK31947@localhost.localdomain>
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On Sat, Aug 04, 2007 at 08:18:53AM +0300, Andrei Popescu wrote:

> On Fri, Aug 03, 2007 at 10:04:40PM -0700, Andrew Sackville-West wrote:
> > On Sat, Aug 04, 2007 at 07:42:57AM +0300, Andrei Popescu wrote:
> > > On Fri, Aug 03, 2007 at 08:23:17PM -0400, Douglas Allan Tutty wrote:
> > > =20
> > > > This is a great reason to be using LVM with separate LVs.  Need to
> > > > convert?  Create a new LV, make the new filesystem, tar the data ov=

er to

> > > > it.  When everything is working, delete the old LV.  If you need ex=

tra

> > > > space during the transition, borrow a drive and add it to the VG.
> > > =20
> > > What's the benefit of LVM when I add a separate drive?
> >=20
> > you can add the drive to the VG and then create more LV's to shuffle
> > filesystems around to make the conversion possible.
>=20
> If I had a spare drive I would:
>=20
> 1. copy all data from the "problem" partition
> 2. do the conversion (a reformat is no problem as everything is backed=20
> up
> 3. copy all data back
>=20
> Can you do it faster or easier with LVM? I'm just asking, never used=20
> LVM.


not necessarily. And in fact, assuming the spare drive is large
enough, then there is no need for LVM at all. in the corner cases it
might make sense. Say you've got a large partition to do this
conversion and your available drive isn't large enough, nor is the
available space on the VG, then perhaps the two taken together are
large enough, etc. but your point is totally valid.=20



I think that doug is 1) a big fan of lvm and 2) has extra, unused
space on his lvm array and can play around with this stuff. my server
has a pretty significant amount of unused space at the moment and its
great for stuff like this. Eventually, that "disk" (really 4 in raid5
with lvm over the top) will be full, i suppose, but its really
convenient at the moment.



A



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Date: Sat, 4 Aug 2007 00:11:35 -0600


From: bob@proulx.com (Bob Proulx)


To: debian-user@lists.debian.org


Subject: Re: Opinions XFS

Message-ID: <20070804061135.GA13101@dementia.proulx.com>
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Mumia W.. wrote:

> David Brodbeck wrote:
> > However, it doesn't journal data, only metadata, so you may lose a
> > bit of data if the system goes down uncleanly.  The filesystem
> > will be protected from corruption, however.  (Ext3fs can also be
> > configured this way, but its default is to journal data as well as
> > metadata.)
>
> It was my understanding that, by default, ext3 only journals metadata. 
> You have to use one of the "journal_data*" options specified in "man 
> tune2fs" to get ext3 to journal data.

This is a change between the way that it used to be and the way that
it is now.  See this FAQ:



  http://batleth.sapienti-sat.org/projects/FAQs/ext3-faq.html

  "mount -o data=journal"

        Journals all data and metadata, so data is written twice. This
        is the mode which all prior versions of ext3 used.

  "mount -o data=ordered"
        Only journals metadata changes, but data updates are flushed to
        disk before any transactions commit. Data writes are not atomic
        but this mode still guarantees that after a crash, files will
        never contain stale data blocks from old files.

Don't know where to look next?X

  The default data mode is Journaled for a V1 journal, and Ordered for V2.



Bob



Date: Sat, 4 Aug 2007 02:14:39 -0400


From: "percy tiglao" <prtiglao@gmail.com>
To: debian-user@lists.debian.org


Subject: Issues with ethernet in testing/lenny

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Hello, I've recently purchased a Dell Inspiron 530 and wanted to get
Debian onto it. I've installed Lenny mostly without any issues, but it
did not autodetect my ethernet card. It is a 82562V-2 integrated card,
at least according to the Windows Vista devise manager.



Anyway, I do have a very basic system up and running. No internet
support or anything, so I can really only do stuff from the Windows
side of my system right now. I'm not sure how I can get logs of what I
do to my email from Debian so I'm sorry about the lack of the logs.
I'll do my best to describe the error messages however.



As I stated earlier, the installer did not detect the network card. I
tried loading the "e1000" module inside the installation program which
according to intel should be the module I need:
http://downloadmirror.intel.com/9180/ENG/README.txt

The installer wouldn't acccept it, it would just loop back to the
"select module" screen. I tried to "modprobe e1000" manually during
the installation, but that didn't work either. No error messages come
up.


Confused? Frustrated?X

After that, the rest of the system installed without any hassle, but
obviously I cannot connect to the internet right now without any
network card, so I don't have anything installed aside from whatever
is on the base netinstall on Lenny.



I've tried to "modprobe e1000" after the installation, and there seems
to be no errors that happen. I use dmesg and aside from the loading
message from e1000, no other messages pop up. I've also added "iface
eth0 inet dhcp" into my /etc/network/interfaces file, and tried to do
"ifup eth0", but that fails with the message: 'Device "eth0" does not
exist'



Thank you for reading this message. I'd really like to get Debian up
and running as soon as possible so please help. As an aside, all error
messages and other logs are from memory + google. So they may not be
100% correct but they're the best I got right now.



Date:  Sat, 04 Aug 2007 09:43:46 +0200


From: =?ISO-8859-1?Q?J=F6rg-Volker_Peetz?= <jvpeetz@web.de>
To: debian-user@lists.debian.org


Subject:  Re: Opinions XFS

Message-ID: 
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Douglas Allan Tutty wrote:


[...]

> As for the features, there was an article in the Linux Gazatte that I'm
> looking up now...
>=20
> http://linuxgazette.net/102/piszcz.html
>=20
> that does some real-world benchmark comparisons.  Its from May, 2004 an=

d

> the kernel is a 2.4.  However, it may be useful. =20
>=20


[...]


Two more recent articles:



Benchmarking Filesystems Part II LG #122
http://linuxgazette.net/122/piszcz.html

Debian Administration :: Filesystems (ext3, reiser, xfs, jfs) comparison
on Debian Etch

http://www.debian-administration.org/articles/388
Call Pantek today for Open Source Technical Support at 1-877-546-8934 - 24/7/365X

--=20


Regards,


J=F6rg-Volker.



Date: Sat, 4 Aug 2007 09:25:06 +0100


From: Alan Chandler <alan@chandlerfamily.org.uk>
To: debian-user@lists.debian.org


Subject: Transitioning to 64bit, is it worth it, and how
Message-Id: <200708040925.07044.alan@chandlerfamily.org.uk>
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I have a Core2 Duo on which I am running a 686 kernel (from Debian 
unstable).  It has 1GB of memory



I am wondering two things



  1.   What are the pros and cons in switching to 64 bit mode? 

  
    •   Is it faster?
    
    •   Are the packages less stable?
    
    •   Does it need significantly more memory?
    
    •   Can I use 32 bit apps from the repository if I have problems with an 
identically named one in the 64 bit repository (with pinning maybe)

  
  2.   Is there a simple transition path?

  
    •   Is there any howto?
    
    •   My current unstable repository seems to have a 64 bit kernel - do I 
just install that and then change where my sources.list points>




  
-- 
Alan Chandler
http://www.chandlerfamily.org.uk

Date: Sat,  4 Aug 2007 10:42:51 +0200 (CEST)
From: pinniped <cirilo_bernardo@yahoo.com>
To: debian-user@lists.debian.org
Subject: Adaptec 2100s
Message-Id: <listhandler=2&site=www.debianhelp.org&nid=9279&pid=32903&cid=32909&uid=76&tid=79&42cd1ffce24005234e3dab7a068527dd@www.debianhelp.org>
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The message:

PCI: unable to reserve mem region #1:...... for device 0000:00:09.0

is the most likely place where the system failed. The driver could not in=
itialize properly, so the RAID cannot be used and your system goes to "wa=
iting for root filesystem".

If the message actually tells you what the memory region is, write it dow=
n and when you're dumped to busybox, try to find out what device took tha=
t memory away:

less /proc/iomem
(Or 'more' if your busybox doesn't support 'less'.)

You may have to do things like change PnP settings via BIOS or even disab=
le a device which conflicts with your RAID.

I have no idea why it booted and installed fine but you have problems wit=
h the reboot.



Date: Sat, 4 Aug 2007 10:47:48 +0200 (CEST)
From: Agricolae Maximus <amax@mail15.com>
To: debian-user@lists.debian.org
Subject: Re: ifup fails but iwconfig
Message-ID: <f91efk$m3i$1@aioe.org>
Content-Type: text/plain; charset=UTF-8
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On Fri, 03 Aug 2007 10:30:19 +0200, pizzapie_linuxanchovies wrote:


> Agricolae--thanks for the suggestion.  There is no Network-Manager on m=

y

> install, but fortunately your idea kept me going long enough to *nearly=

*

> find the solution.
>=20
> Turns out I made a mistake in my original post.  If the ifup command
> fails, then the iwconfig command will also fail:
>=20

--- snip


>=20
> So I see a catch-22 bug. rausb0 must be up in order for the iwconfig
> commands to succeed But the iwconfig commands must  succeed in order to
> *truly* bring rausb0 up (=3Dhave dhclient succeed). The only workaround=

 is

> entering that weird state (state #2) where rausb0 is up but dhclient
> hasn't yet succeeded.
>=20
> Now that's what I call messed up.  Any ideas for a fix?
>=20
> Pizzapie


Jeez, I don't know what to say - check to see if your interfaces file in
/etc/network includes rausb0 correctly - did you remember to include the
line
=20
		auto rausb0
above
		iface rausb0 inet dhcp

or if you have a firewall, have you configured it to allow the port that
rausb0 uses

I don't really have much more I can think of.  Hve you tried posting your
problem to "comp.os.linux.networking"?  There's some real networking guru=
s
in that group & maybe some one can spot something that neither of us have
thought of.

Sorry I can't suggest a more concrete solution to your frustrating proble=
m.

Sincerely,

   ~A~


--=20
Experience is that marvelous thing that enables you to
recognize a mistake when you make it again.
 -- Anonymous
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D
Registered Linux User No. 306834



Date: Sat, 04 Aug 2007 11:35:09 +0200
From: Marko Randjelovic <marel@sbb.co.yu>
To: debian-user@lists.debian.org
Cc: debian-user@lists.debian.org
Subject: Re: Transitioning to 64bit, is it worth it, and how
Message-ID: <46B4484D.3010903@sbb.co.yu>
Content-Type: text/plain; charset=ISO-8859-1
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Alan Chandler wrote:

> I have a Core2 Duo on which I am running a 686 kernel (from Debian 
> unstable).  It has 1GB of memory
> 
> I am wondering two things
> 
> a) What are the pros and cons in switching to 64 bit mode? 
> 	- Is it faster?
> 	- Are the packages less stable?
> 	- Does it need significantly more memory?
> 	- Can I use 32 bit apps from the repository if I have problems with an 
> identically named one in the 64 bit repository (with pinning maybe)


Yes, it is faster. Packages are not less stable, but some are
unavailable. It does need significantly more memory, but your system
should work fine, unless you use some very "hungry" apps like Eclipse.
You can install some 32-bit apps using dpkg with --force-architecture
option. If you need Acroread, first install ia32-libs-gtk from Ubuntu.


> b) Is there a simple transition path?
> 	- Is there any howto?
> 	- My current unstable repository seems to have a 64 bit kernel - do I 
> just install that and then change where my sources.list points>
> 


I think you have to install from scratch.


Do you need help?X

Date: Sat, 04 Aug 2007 04:35:31 -0500
From: Ron Johnson <ron.l.johnson@cox.net>
To: debian-user@lists.debian.org
Subject: Re: Transitioning to 64bit, is it worth it, and how
Message-ID: <46B44863.7000006@cox.net>
Content-Type: text/plain; charset=us-ascii
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On 08/04/07 03:25, Alan Chandler wrote:

> I have a Core2 Duo on which I am running a 686 kernel (from Debian 
> unstable).  It has 1GB of memory
> 
> I am wondering two things
> 
> a) What are the pros and cons in switching to 64 bit mode? 
> 	- Is it faster?


Yes.  There are more CPU registers, which means that programs need
do less fetching and storing of temp variables to and from memory.

Applications (like modern Python interpreters) which use lots of
"long long" 64 bit integers will also be significantly faster.


> 	- Are the packages less stable?


Why should they be?


> 	- Does it need significantly more memory?


Not that you'd notice, unless you are already memory constrained.

However, having 2 banks of 512MB will give it better RAM bandwidth.


> 	- Can I use 32 bit apps from the repository if I have problems with an 
> identically named one in the 64 bit repository (with pinning maybe)


Yes, within chroots.


> b) Is there a simple transition path?


Reinstall from scratch, and pray that your /home is on a seperate
partition.


> 	- Is there any howto?
> 	- My current unstable repository seems to have a 64 bit kernel - do I 
> just install that and then change where my sources.list points>


- --
Ron Johnson, Jr.
Jefferson LA  USA

Give a man a fish, and he eats for a day.
Hit him with a fish, and he goes away for good!

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Date: Sat, 04 Aug 2007 04:42:29 -0500
From: Ron Johnson <ron.l.johnson@cox.net>
To: List Debian User <debian-user@lists.debian.org>
Subject: Re: Opinions XFS
Message-ID: <46B44A05.8090402@cox.net>
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On 08/03/07 21:44, David Brodbeck wrote:
[snip]

> 
> I think there's a bit of Not Invented Here syndrome with XFS that causes
> people to be wary of it, but in my experience it's a rock-solid


I'd have to modify that.  Instead of NIH, my worry is that since XFS
was designed for a different kernel, it's been "shimmed" into Linux
and so doesn't integrate as well as ext2/3 and ReiserFS.  Same
concern with jfs.

I'll be building my own home server soon, and am strongly thinking
of going with OpenSolaris and using ZFS.

- --
Ron Johnson, Jr.
Jefferson LA  USA

Give a man a fish, and he eats for a day.
Hit him with a fish, and he goes away for good!

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Date: Sat, 04 Aug 2007 04:47:20 -0500
From: Ron Johnson <ron.l.johnson@cox.net>
To: debian-user@lists.debian.org
Subject: Re: Opinions XFS
Message-ID: <46B44B28.8060008@cox.net>
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On 08/03/07 20:09, Douglas Allan Tutty wrote:
[snip]

> 
> Not this thread again.  I went from ext3 to JFS because I have frequent
> power failures and Sarge's ext3 would get invisible mysterious errors
> that ended up with a corrupted file system, especially if the power
> failed during a fsck.  At the time, I didn't go with XFS because at that


Three words: Uninterruptible Power Supply.

Decent SOHO models from APC are ~US$100 and darned effective.

- --
Ron Johnson, Jr.
Jefferson LA  USA

Give a man a fish, and he eats for a day.
Hit him with a fish, and he goes away for good!

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Date: Sat,  4 Aug 2007 12:34:01 +0200 (CEST)
From: pinniped <cirilo_bernardo@yahoo.com>
To: debian-user@lists.debian.org
Subject: Transitioning to 64bit, is it worth it, and how
Message-Id: <listhandler=2&site=www.debianhelp.org&nid=9310&pid=32912&cid=32916&uid=76&tid=79&0b674476071ec7fe95a446477ab8e00c@www.debianhelp.org>
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* a) What are the pros and cons in switching to 64 bit mode?
* - Is it faster?
I don't know - never ran my Opteron in 32-bit mode. I was wishing 64-bit =
floating point operations would be faster but they're not because AMD did=
n't really improve the math unit. In principle it should be faster if onl=
y because you're running in Native mode rather than Compatibility mode.

* - Are the packages less stable?
No.  It is possible that some 'unclean' code which is being transitioned =
to 64-bit will cause problems but I am not familiar with any. OpenOffice =
was unclean at one stage but the fix-up was completed at least a year ago=
. (Having said that, I had fixed up 64-bit issues in 2 "open source" libr=
aries.)

* - Does it need significantly more memory?
No, memory use doesn't change that much except for addresses now being 64=
-bit (well, something like 48 really) rather than 32-bit. 32-bit addresse=
s limited you to 4GB of virtual memory.  With 64-bit addressing you proba=
bly cannot afford to buy enough memory to make use of all 48 address bits=
.

* - Can I use 32 bit apps from the repository if I have problems with an
identically named one in the 64 bit repository (with pinning maybe)
Yes, but it's tricky. The kernel needs to support the 32-bit system call =
format (I think the Debian kernels enable this by default) and you need a=
 32-bit dynamic loader and 32-bit libraries.  Your 32-bit program can onl=
y make system calls and link to 32-bit libraries.

* b) Is there a simple transition path?
Yes, install from scratch.
* - Is there any howto?
Numerous howtos on the Debian AMD64 website.Have a look at the links near=
 the bottom of this:
http://www.debian.org/ports/amd64/

* - My current unstable repository seems to have a 64 bit kernel - do I j=
ust install that and then change where my sources.list points>
No. Install from scratch.  Install 32-bit libraries as needed.

Some software (notably numerous proprietary stuff - people have already m=
entioned Acrobat Reader) are available as 32-bit only.  Other proprietary=
 binaries that come to mind are Flash Player and Skype.  I've nagged Skyp=
e for a few months but they really don't care.  I don't use any of these =
32-bit only software because I refuse to waste disk space installing 32-b=
it libs.  If you use Wine or CrossoverOffice or Cedega you will have pret=
ty much a complete 32-bit installation in parallel with your 64-bit.  If =
you really use a lot of 32-bit stuff, stick to 32-bit until things improv=
e (that may be a few more years). The exception to that of course is if y=
ou're one of those people who really wants to squeeze something out of ev=
ery CPU cycle.



Date: Sat, 4 Aug 2007 12:19:09 +0100
From: Alan Chandler <alan@chandlerfamily.org.uk>
To: debian-user@lists.debian.org
Subject: Re: Transitioning to 64bit, is it worth it, and how
Message-Id: <200708041219.09204.alan@chandlerfamily.org.uk>
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On Saturday 04 Aug 2007, Ron Johnson wrote:

> On 08/04/07 03:25, Alan Chandler wrote:

> > b) Is there a simple transition path?
>
> Reinstall from scratch, and pray that your /home is on a seperate
> partition.


Well the only home that matters - ie mine is - this is essentially just 
a personal machine.  I am using raid1 with LVM on top, so I can easily 
create additional "partitions" and move things about as I wish.

My only slight reservation is I am not sure if the installer supports 
raid, so it might be more complex than just installing. I also want to 
take the opportunity to enlarge my /boot partition (also raid 1) as 32M 
is just not enough these days - frequently seem to fill it up as I 
upgrade kernels.




-- 
Alan Chandler
http://www.chandlerfamily.org.uk

Date: Sat,  4 Aug 2007 12:59:07 +0200 (CEST)
From: pinniped <cirilo_bernardo@yahoo.com>
To: debian-user@lists.debian.org
Subject: ifup fails but iwconfig and dhclient works?
Message-Id: <listhandler=2&site=www.debianhelp.org&nid=9284&pid=32807&cid=32917&uid=76&tid=79&9a45d95d5a9c3c3a107aa8925f1c097e@www.debianhelp.org>
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It sounds like your network script is running while the wireless driver h=
asn't finished setting up.  I have an EPX form computer out in the field =
and it's got an rt2570 in it. Because of the peculiar way that machine op=
erates, I use pre-up/post-down to load and unload the driver; the driver =
itself is blacklisted so it's not automatically loaded at boot.  Of cours=
e the 'pre-up' loads the driver as the network script is running.  I have=
 never had problems with that machine - maybe you can try the same and se=
e what happens? I must admit that if it works it's a voodoo solution - yo=
u still wouldn't have identified the actual problem.



Date: Sat, 4 Aug 2007 08:51:08 -0400
From: Douglas Allan Tutty <dtutty@porchlight.ca>
To: debian-user@lists.debian.org
Subject: Re: Opinions XFS
Message-ID: <20070804125108.GA6564@titan>
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On Sat, Aug 04, 2007 at 09:43:46AM +0200, J?rg-Volker Peetz wrote:
 

> Debian Administration :: Filesystems (ext3, reiser, xfs, jfs) comparison
> on Debian Etch
> http://www.debian-administration.org/articles/388
> 


Great article.  As Ron points out, a UPS answers many of the
power-failure questions, however, should a machine freeze up and require
a hard reset, a UPS doesn't help.  I suppose to answer this, the tests
should have added a "calculate md5 hash on all files" with a power-cycle
at one point during a vulnerable point in a second round of the test.

We all know that power-cycling a mounted FS can result in loss of data
that was being written at the time.  It suggests that at least system
binaries should remain intact, unless you're doing an upgade at the time
:(

Doug.



Date: Sat, 4 Aug 2007 08:58:00 -0400
From: Douglas Allan Tutty <dtutty@porchlight.ca>
To: debian-user@lists.debian.org
Subject: Re: converting file system
Message-ID: <20070804125800.GB6564@titan>
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On Sat, Aug 04, 2007 at 07:42:57AM +0300, Andrei Popescu wrote:

> On Fri, Aug 03, 2007 at 08:23:17PM -0400, Douglas Allan Tutty wrote:
>  
> > This is a great reason to be using LVM with separate LVs.  Need to
> > convert?  Create a new LV, make the new filesystem, tar the data over to
> > it.  When everything is working, delete the old LV.  If you need extra
> > space during the transition, borrow a drive and add it to the VG.
>  
> What's the benefit of LVM when I add a separate drive?


It depends on the relative size of the filesystem you want to convert to
the size of your spare drive.  If your spare drive is larger, it doesn't
matter.  If the filesystem is larger, the drive can be added to the VG
to donate its space.  This could be a real issue if your spare drive is
an older, smaller one.  E.g: filesystem is 60 GB, you only have 20 GB
spare in the VG (call it an 80 GB drive), however, you can borrow an
older 40 GB drive.  Add the 40 GB drive to the VG, you now have 60 GB
free to make a temp LV.

Doug.

End of debian-user-digest Digest V2007 Issue #2096
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Received on Sat Aug  4 09:20:23 2007
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