|
When you format, unless you specify the block size, the
default block size is used.
The default block size is defined based on the size of
the logical disk (partition) size that you've created.
Any disk space left over from the format is listed as
unusable (for the block size that's being used) can not be used because it's not
a multiple of the block size used to format that logical
drive/partition.
The only way that you can make use of the remaining
very small disk space is to use the smaller block size when
formatting. However, unless you know exactly what you're doing, it's
not advisable for you to do so since this will more likely impact the
performance of your logical drive/partition. A lot of testing were done to
determine the optimal block size based on the size of the logical
drive/partition that you've created.
Except for academic reason(s), you should not be
concerned with such a small left over.
Regards,
From: linux-lvm-bounces@redhat.com [mailto:linux-lvm-bounces@redhat.com] On Behalf Of Joseph L. Casale Sent: Monday, November 12, 2007 4:34 PM To: 'linux-lvm@redhat.com' Subject: Beginner Questions Hi, --- Physical volume --- PV
Name
/dev/sdb1 VG
Name
name PV
Size
745.00 GB / not usable 3.67 MB
Allocatable
yes PE Size (KByte)
4096 Total PE
190718 Free
PE
190718 Allocated
PE 0 PV
UUID
yQyVCe-tiS4-Ma1E-hilJ-niuG-KXL9-jkKVIk --- Physical volume --- PV
Name
/dev/sdc1 VG
Name
name PV
Size
1024.00 GB / not usable 8192.00 EB
Allocatable
yes PE Size (KByte)
4096 Total
PE
357626 Free
PE
357626 Allocated
PE 0 PV
UUID
PURHhY-Lo1T-5bif-HjGP-dP3o-NVTs-71ZKUm Why is some space “not usable”? Thanks! |
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