Re: 3rd new wheezy install
On Sunday, February 08, 2015 02:58:52 PM Bob Proulx wrote:
> Gene Heskett wrote:
> > Bob Proulx wrote:
> > > You might want to use parted for alignment checks.
> > >
> > >...
> > >
> > > root@phobia:~# parted /dev/sda align-check opt 1
> > > 1 aligned
> > > root@phobia:~# parted /dev/sda align-check opt 5
> > > 5 aligned
> > >
> > > root@turmoil:~# parted /dev/sda align-check opt 1
> > > 1 not aligned
> >
> > Had to install it, but it agrees, although the last example you show is
> > confusing, Here I get the 2 not aligned, but your paste says 1.
>
> You should be ignoring partition 2. You aren't using it. It is the
> extended partition which holds your next logical partition.
>
> I was showing example usage of the tool and showing it returning
> results both positive and negative for the example. My partition 1 is
> unrelated to your partition 2 as they are different systems. Notice
> the machine names are names of machines on my network and not in any
> way related to your system. Unless by happenstance you and I chose
> the same system names. :-)
>
> You should try 'cfdisk' and look at what it displays. Here is an
> example of the cfdisk output from a system here.
>
> # cfdisk
>
> Name Flags Part Type FS Type [Label]
> Sectors
> ------------------------------------------------------------------------
> ------ Primary Free Space 2048* sda1
> Primary linux_raid_m 997376* Pri/Log
> Free Space 2046* sda5 NC
> Logical linux_raid_m 488280066*
>
> Note that it doesn't display sda2. If you had been using cfdisk
> instead of fdisk you would never even have seen sda2 and therefore
> would not have noticed it. I think the cfdisk folks made a good
> design choice there. It is there as an extended partition. But
> cfdisk does not display it. Because it isn't used as such. It is the
> way to encapulate logical partitions that you do use.
>
> # parted /dev/sda unit s print
>
> Number Start End Size Type File system
> Flags 1 2048s 999423s 997376s primary ext2
> raid 2 1001470s 3907028991s 3906027522s extended
> 5 1001472s 489281535s 488280064s logical
> raid
>
> That is the same system and a different dump of the same partition table.
>
> I have always really liked using cfdisk in the past. I hope it gets
> some love and attention to keep up to date with new formats too. Oh,
> maybe it is getting attention because when I look at a newer system I
> see this:
>
> # cfdisk (in Sid today)
>
> Device Boot Start End Sectors Size Id Type
> /dev/sda1 63 996029 995967 486.3M fd Linux
> raid autod /dev/sda2 996030 1953520064 1952524035 931G 5
> Extended
>
> |-/dev/sda5 996093 489275639 488279547 232.8G fd Linux
> |raid autod -/dev/sda6 489275703 1114268399 624992697
> |298G fd Linux raid autod
>
> `-/dev/sda7 1114268463 1953520064 839251602 400.2G fd Linux
> raid autod
>
> I see cfdisk is now showing the partitions in a tree display. This is
> an older system that has been upgraded through many major releases and
> it is showing that it is older 512 byte alignment.
>
> > 1. So it seems I have been barking at the moon.
>
> Yes. :-(
>
> > But my first install on one of these new 4k/sector drives suffered
> > from 20 meg a second drive performance, so I was an early victim.
>
> Very likely if you were using an older installer that didn't know
> about the new 4k AF drives. That older software would have
> partitioned things as they were done before. That was a problem for
> all installers when the new 4k AF drives first appeared because none
> of the installers had code to handle it until later. Of course that
> would have had nothing to do with the Debian Wheezy 7 installer.
>
> > A Mandrake install IIRC. I liked it, but then they went toes up. So
> > at that point I went back to the same install I am using on my cnc
> > machines so that I could write gcode from a warm comfy chair as
> > apposed to standing up at the keyboards of those machines.
> >
> > Now this install is compatible with those, I share all 3 machines with
> > each other via nfs to move code, and with an rt-pre-empt kermel I can
> > at least run the simulation to check the correctness of my code while
> > carving imaginary air.
>
> It sounds like you have been having fun. Note however that none of
> those things have anything to do with the Debian Wheezy 7 installer
> that you have been complaining about here in this thread.
>
> > I have other problems that I may ask about, but lets put a ~30~ on
> > this thread
>
> If ~30~ means stop complaining in this thread about the Debian Wheezy
> 7 installer not being able to handle AF 4k drives then yes let's do
> that. :-)
Ah, no. The ~30~ on the end of a message is newspaper speak for the end.
Of this thread. :) That probably dates me. :)
>
> > 2. I am finally having a conversation with somene who does appear to be
> > familiar with the subject/problem,
>
> There is no substitute for face to face conversation with friendly and
> knowledgeable people. With emphasis on the knowledgeable part. The
> sales people in Best Buy are friendly. But I stick my fingers in my
> ears and hum when I walk around there to avoid the anti-knowledgeable
> part. Finding a local user group or other gathering is a way way to
> get shared knowledge from the community. When face to face
> misconceptions can be seen and addressed more easily. I definitely
> recommend people get with user groups for real life conversations.
>
> > and I thank you very much, Bob.
>
> Happy to help.
>
> Bob
Cheers, Gene Heskett
--
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