ะัะฒะฐะตั, ััะพ ะฝัะถะฝะพ ะฟะพะปััะธัั ะฟะพะปะฝัั ะบะพะฟะธั ัะพะผะฐ ะฒ ัะฐะผะบะฐั
ะพะดะฝะพะน ัะธััะตะผั ั
ัะฐะฝะตะฝะธั ะดะฐะฝะฝัั
(ะกะฅะ), ะฝะต ัะฝะธะผะพะบ, ะบะปะพะฝ, ะฐ ะธะผะตะฝะฝะพ ะฟะพะปะฝะพัะตะฝะฝัะน ัะพะผ. ะะพ ะฝะต ะฒัะตะณะดะฐ ะกะฅะ ะดะฐะตั ััะพ ัะดะตะปะฐัั ะฒะฝัััะธ ัะตะฑั ัะพะฑััะฒะตะฝะฝัะผะธ ััะตะดััะฒะฐะผะธ. ะัะพะดะต ะตะดะธะฝััะฒะตะฝะฝัะน ะฒะฐัะธะฐะฝั ะบะพะฟะธัะพะฒะฐัั ัะตัะตะท ัะตัะฒะตั, ะฝะพ ะฟัะธ ััะพะผ ะฒะตัั ะพะฑัะตะผ ะดะฐะฝะฝัั
ะฑัะดะตั ะณะพะฝััััั ัะตัะตะท ัะฐะผ ัะตัะฒะตั, ัะตัั ะดะพ ะกะฅะ ะธ ะฟะพััั ะกะฅะ, ะฝะฐะณััะถะฐั ะฒัะต ััะธ ะบะพะผะฟะพะฝะตะฝัั. ะะพ ะตััั SCSI ะบะพะผะฐะฝะดั, ะบะพัะพััะต ะผะพะณัั ะฟะพะทะฒะพะปะธัั ัะดะตะปะฐัั ะฒัะต ะฒ ัะฐะผะบะฐั
ัะฐะผะพะน ะกะฅะ ะธ ะตัะปะธ ะฒะฐัะฐ ัะธััะตะผะฐ ะฟะพะดะดะตัะถะธะฒะฐะตั VAAI ะพั VMware, ัะพ ะฟัะฐะบัะธัะตัะบะธ 100%, ััะพ ะฟะพะดะดะตัะถะธะฒะฐะตััั ะบะพะผะฐะฝะดะฐ XCOPY (EXTENDED COPY), ะบะพัะพัะฐั ะธ ะณะพะฒะพัะธั ะผะฐััะธะฒั ััะพ ะธ ะบัะดะฐ ัะบะพะฟะธัะพะฒะฐัั, ะฝะต ะฒะพะฒะปะตะบะฐั ะฒ ััะพั ะฟัะพัะตัั ัะตัะฒะตั ะธ ัะตัั.
ะัะพะดะต ะบะฐะบ ะฒัะต ะดะพะปะถะฝะพ ะฑััั ะฟัะพััะพ, ะฝะพ ัะฐะบ ัั
ะพะดั ั ะณะพัะพะฒัั
ัะบัะธะฟัะพะฒ ะฝะต ะฝะฐัะตะป, ะฟัะธัะปะพัั ะธะทะพะฑัะตัะฐัั ะฒะตะปะพัะธะฟะตะด. ะะปั ะะก ัะตัะฒะตัะฐ ะฑัะป ะฒัะฑัะฐะฝ Linux, ะฐ ะฒ ะบะฐัะตััะฒะต ััะตะดััะฒะฐ ะบะพะฟะธัะพะฒะฐะฝะธั ะบะพะผะฐะฝะดะฐ ddpt (http://sg.danny.cz/sg/ddpt.html). ะะพะฟะธัะพะฒะฐัั ั ะฟะพะผะพััั ัะฐะบะพะน ะบะพะผะฑะธะฝะฐัะธะธ ะผะพะถะฝะพ ะปัะฑัะต ัะพะผะฐ ะพั ะปัะฑะพะน ะะก, ะฟะพัะบะพะปัะบั ะบะพะฟะธัะพะฒะฐะฝะธะต ะธะดะตั ะฟะพะฑะปะพัะฝะพ ะฝะฐ ััะพัะพะฝะต ะกะฅะ. ะะพัะบะพะปัะบั ะฝะฐะดะพ ะบะพะฟะธัะพะฒะฐัั ะฟะพะฑะปะพัะฝะพ, ะฐ ะบะพะปะธัะตััะฒะพ ะฑะปะพะบะพะฒ ะฝะฐะดะพ ะฟะพััะธัะฐัั, ัะพ ะดะปั ะฟะพะดััะตัะฐ ะบะพะปะธัะตััะฒะฐ ัะฐะบะธั
ะธัะตัะฐัะธะน ะธัะฟะพะปัะทะพะฒะฐะปะฐัั ะบะพะผะฐะฝะดะฐ blockdev. ะะฐะบัะธะผะฐะปัะฝัะน ัะฐะทะผะตั ะฑะปะพะบะฐ ะฑัะป ะฟะพะปััะตะฝ ะพะฟััะฝัะผ ะฟััะตะผ, ั ะฑะพะปััะธะผ ะฑะปะพะบะพะผ ddpt ะฝะต ัะฐะฑะพัะฐะป ะฟะพ ัะฐะบัั. ะ ะธัะพะณะต ะฟะพะปััะธะปัั ัะปะตะดัััะธะน ะดะพะฒะพะปัะฝะพ ะฟัะพััะพะน ัะบัะธะฟั:
#!/bin/bash
# first parameter = input device
# second parameter = output device
# device size must be the same
# changing bs variable can reduce speed, max speed should be at bs=32768. 32768 is max setting, lower settings should be calculated dividing by 2
set -o nounset
bs=32768
s=`blockdev --getsz $1`
i=0
while [ $i -le $s ]
do
ddpt of=$2 bs=512 oflag=xcopy,direct if=$1 iflag=xcopy,direct count=$bs verbose=-1 skip=$i seek=$i
i=$(( $i+$bs ))
done
ะะฐะฒะฐะนัะต ัะดะตะปะฐะตะผ ะฝะตะฑะพะปัััั ะฟัะพะฒะตัะบั! ะั ะบะฐะบ ะฝะตะฑะพะปัััั, 1ะขะ ัะฐะนะป ัะพะทะดะฐะฒะฐะปัั ะธ ะฟัะพะฒะตััะปัั md5sum ะฝะตะฑััััะพ ๐
root@sales-demo-05:/home/vasilyk# blockdev --getsz /dev/mapper/mpathfs
2516582400
root@sales-demo-05:/home/vasilyk# blockdev --getsz /dev/mapper/mpathfr
2516582400
root@sales-demo-05:/home/vasilyk# mount /dev/mapper/mpathfs /xcopy_source/
mount: /xcopy_source: wrong fs type, bad option, bad superblock on /dev/mapper/mpathfs, missing codepage or helper program, or other error.
root@sales-demo-05:/home/vasilyk# mkfs /dev/mapper/mpathfs
mke2fs 1.44.1 (24-Mar-2018)
Discarding device blocks: done
Creating filesystem with 314572800 4k blocks and 78643200 inodes
Filesystem UUID: bed3ea00-c181-4b4e-b52e-d9bb498be756
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,
4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968,
102400000, 214990848
Allocating group tables: done
Writing inode tables: done
Writing superblocks and filesystem accounting information: done
root@sales-demo-05:/home/vasilyk# mount /dev/mapper/mpathfs /xcopy_source/
root@sales-demo-05:/home/vasilyk# ls -l /xcopy_source/
total 16
drwx------ 2 root root 16384 Aug 19 15:35 lost+found
root@sales-demo-05:/home/vasilyk# head -c 1T </dev/urandom > /xcopy_source/1TB_file
root@sales-demo-05:/home/vasilyk# ls -l /xcopy_source/
total 1074791444
-rw-r--r-- 1 root root 1099511627776 Aug 19 17:25 1TB_file
drwx------ 2 root root 16384 Aug 19 15:35 lost+found
root@sales-demo-05:/home/vasilyk# umount /xcopy_source
root@sales-demo-05:/home/vasilyk# mount /dev/mapper/mpathfr /xcopy_dest/
mount: /xcopy_dest: wrong fs type, bad option, bad superblock on /dev/mapper/mpathfr, missing codepage or helper program, or other error.
root@sales-demo-05:/home/vasilyk# cat xcopy.sh
#!/bin/bash
# first parameter = input device
# second parameter = output device
# device size must be the same
# changing bs variable can reduce speed, max speed should be at bs=32768. 32768 is max setting, lower settings should be calculated dividing by 2
bs=32768
s=`blockdev --getsz $1`
i=0
while [ $i -le $s ]
do
ddpt of=$2 bs=512 oflag=xcopy,direct if=$1 iflag=xcopy,direct count=$bs verbose=-1 skip=$i seek=$i
i=$(( $i+$bs ))
done
root@sales-demo-05:/home/vasilyk# time ./xcopy.sh /dev/mapper/mpathfs /dev/mapper/mpathfr
real 11m30.878s
user 2m3.000s
sys 1m11.657s
ะงัะพ ะฒ ััะพั ะผะพะผะตะฝั ะฟัะพะธัั ะพะดะธะปะพ ะฝะฐ ะกะฅะ:
ะัะพะดะพะปะถะธะผ ั ะะธะฝัะบัะพะผ.
root@sales-demo-05:/home/vasilyk# mount /dev/mapper/mpathfr /xcopy_dest/
root@sales-demo-05:/home/vasilyk# ls -l /xcopy_dest/
total 1074791444
-rw-r--r-- 1 root root 1099511627776 Aug 19 17:25 1TB_file
drwx------ 2 root root 16384 Aug 19 15:35 lost+found
root@sales-demo-05:/home/vasilyk# mount /dev/mapper/mpathfs /xcopy_source/
root@sales-demo-05:/home/vasilyk# md5sum /xcopy_source/1TB_file
53dc6dfdfc89f099c0d5177c652b5764 /xcopy_source/1TB_file
root@sales-demo-05:/home/vasilyk# md5sum /xcopy_dest/1TB_file
53dc6dfdfc89f099c0d5177c652b5764 /xcopy_dest/1TB_file
root@sales-demo-05:/home/vasilyk#
ะัะต ะฟะพะปััะธะปะพัั, ะฝะพ ัะตััะธััะนัะต ะธ ะธัะฟะพะปัะทัะนัะต ะฝะฐ ัะฒะพะน ัััะฐั
ะธ ัะธัะบ! ะะฐะบ ะธัั
ะพะดะฝัะน ัะพะผ ะปัััะต ะฑัะฐัั ัะฝะตะฟัะพัั, ะดะปั ะฝะฐัะฐะปะฐ.
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