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Re: formatting a 12.73 Tb disk on ROCKS 5.2



I am running CentOS release 5.6 on this system.

On Thu, May 9, 2013 at 3:45 PM, Jonathan Billings <jsbillin umich edu>wrote:

> align-check is not supported on the old version of parted in EL5.2.
>
>
> On Thu, May 9, 2013 at 3:37 PM, Doll, Margaret Ann
> <margaret_doll brown edu>wrote:
>
> > parted align-check optimal /dev/sda1
> > Error: Could not stat device align-check - No such file or directory.
> > Retry/Cancel? cancel
> >
> > On Thu, May 9, 2013 at 3:26 PM, Doll, Margaret Ann
> > <margaret_doll brown edu>wrote:
> >
> > > The drives are Seagate Constellation disks, 1 Tb apiece.  I have 15 of
> > > them in the array.
> > >
> > >
> > > On Thu, May 9, 2013 at 3:25 PM, <m roth 5-cent us> wrote:
> > >
> > >> Doll, Margaret Ann wrote:
> > >> > On Thu, May 9, 2013 at 3:09 PM, <m roth 5-cent us> wrote:
> > >> >
> > >> >> Doll, Margaret Ann wrote:
> > >> >> > The answer came from my vendor at Atipa.
> > >> >> >
> > >> >> > You will need to change the partitioning scheme to use GPT in
> order
> > >> to
> > >> >> > enable greater than 2TB support.
> > >> >>
> > >> >> Which is what I was saying.
> > >> >> >
> > >> >> > # parted -s /dev/sda mklabel gpt
> > >> >>
> > >> >> This is command-line version of what I said - I was giving you the
> > >> >> interactive version. I do not understand why the above would work,
> > and
> > >> >> what I suggested you do gave you "invalid token".
> > >> >> >
> > >> >> > # parted –s /dev/sda rm 1
> > >> >>
> > >> >> The above removes partition 1.
> > >> >> >
> > >> >> > # parted –s /dev/sda “mkpart primary xfs 1 -1”
> > >> >> >
> > >> >> You've decided to use xfs, yes? And the 1 bothers me, a lot. That's
> > >> >> either sector or cylinder... and they did *not* tell you to use -a
> > >> optimal for
> > >> >> aligning the partition. If you do parted -l, what do you see?
> > >> >>
> > >> > [root nas-0-0 ~]# parted -l
> > >> >
> > >> > Model: AMCC 9650SE-16M DISK (scsi)
> > >> > Disk /dev/sda: 14.0TB
> > >> > Sector size (logical/physical): 512B/512B
> > >> > Partition Table: gpt
> > >> >
> > >> > Number  Start   End     Size    File system  Name     Flags
> > >> >  1      17.4kB  14.0TB  14.0TB  xfs          primary
> > >> >
> > >> > df -h
> > >> >
> > >> > /dev/sda1              13T  8.4G   13T   1% /bigdisk1
> > >>
> > >> Yup - if this were a single disk, that would not be a good place to
> > start,
> > >> esp. if it was a large disk. I don't know how big the drives in the
> > array
> > >> are, and even though parted says it's 512/512 sector size, most new
> > large
> > >> drives are, in reality, 4k in hardware/firmware. You *might* consider
> > >> repartitioning, but start at 2048k, rather than 1. I suspect that if
> you
> > >> did
> > >>       parted align-check optimal /dev/sda1
> > >> that it would tell you it was not aligned properly.
> > >>
> > >>        mark
> > >>
> > >>
> > >>
> > >> --
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> > >> https://www.redhat.com/mailman/listinfo/redhat-list
> > >>
> > >
> > >
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>
>
> --
> Jonathan Billings <jsbillin umich edu>
> College of Engineering - CAEN - Unix and Linux Support
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