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Re: formatting a 12.73 Tb disk on ROCKS 5.2



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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> >
> >
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-- 
Jonathan Billings <jsbillin umich edu>
College of Engineering - CAEN - Unix and Linux Support


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