Can I redirect block storage devices to each other?
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0
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Obviously what I'm about to describe is better handled by rsync or cp, but...
Say I have two drives on my computer. Could I make one a perfect image of the other with the following command? Would files on sda be accessible on sdb through the file system?
cat /dev/sda > /dev/sdb
My inclination is that each device could (potentially) be too different from the other for a blind write like this to work.
block-device storage
asked yesterday
DeepDeadpool
270211
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up vote
0
down vote
favorite
Obviously what I'm about to describe is better handled by rsync or cp, but...
Say I have two drives on my computer. Could I make one a perfect image of the other with the following command? Would files on sda be accessible on sdb through the file system?
cat /dev/sda > /dev/sdb
My inclination is that each device could (potentially) be too different from the other for a blind write like this to work.
block-device storage
asked yesterday
DeepDeadpool
270211
add a comment |
up vote
0
down vote
favorite
up vote
0
down vote
favorite
Obviously what I'm about to describe is better handled by rsync or cp, but...
Say I have two drives on my computer. Could I make one a perfect image of the other with the following command? Would files on sda be accessible on sdb through the file system?
cat /dev/sda > /dev/sdb
My inclination is that each device could (potentially) be too different from the other for a blind write like this to work.
block-device storage
asked yesterday
DeepDeadpool
270211
Obviously what I'm about to describe is better handled by rsync or cp, but...
Say I have two drives on my computer. Could I make one a perfect image of the other with the following command? Would files on sda be accessible on sdb through the file system?
cat /dev/sda > /dev/sdb
My inclination is that each device could (potentially) be too different from the other for a blind write like this to work.
block-device storage
block-device storage
asked yesterday
DeepDeadpool
270211
asked yesterday
DeepDeadpool
270211
asked yesterday
DeepDeadpool
270211
asked yesterday
DeepDeadpool
270211
asked yesterday
DeepDeadpool
270211
270211
add a comment |
add a comment |
1 Answer
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Much better way to copy disk to disk is to use dd:
dd if=/dev/sda of=/dev/sdb
But this will work well only if sda is smaller or equivalent by size to sdb. The same is true about the files on sdb.
If you want to have files on smaller sdb use rsync with some filter (to be sure you will sync successfully the files from sda to sdb)
answered yesterday
Romeo Ninov
5,09231727
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
2
down vote
Much better way to copy disk to disk is to use dd:
dd if=/dev/sda of=/dev/sdb
But this will work well only if sda is smaller or equivalent by size to sdb. The same is true about the files on sdb.
If you want to have files on smaller sdb use rsync with some filter (to be sure you will sync successfully the files from sda to sdb)
answered yesterday
Romeo Ninov
5,09231727
add a comment |
up vote
2
down vote
Much better way to copy disk to disk is to use dd:
dd if=/dev/sda of=/dev/sdb
But this will work well only if sda is smaller or equivalent by size to sdb. The same is true about the files on sdb.
If you want to have files on smaller sdb use rsync with some filter (to be sure you will sync successfully the files from sda to sdb)
answered yesterday
Romeo Ninov
5,09231727
add a comment |
up vote
2
down vote
up vote
2
down vote
Much better way to copy disk to disk is to use dd:
dd if=/dev/sda of=/dev/sdb
But this will work well only if sda is smaller or equivalent by size to sdb. The same is true about the files on sdb.
If you want to have files on smaller sdb use rsync with some filter (to be sure you will sync successfully the files from sda to sdb)
answered yesterday
Romeo Ninov
5,09231727
Much better way to copy disk to disk is to use dd:
dd if=/dev/sda of=/dev/sdb
But this will work well only if sda is smaller or equivalent by size to sdb. The same is true about the files on sdb.
If you want to have files on smaller sdb use rsync with some filter (to be sure you will sync successfully the files from sda to sdb)
answered yesterday
Romeo Ninov
5,09231727
answered yesterday
Romeo Ninov
5,09231727
answered yesterday
Romeo Ninov
5,09231727
answered yesterday
Romeo Ninov
5,09231727
5,09231727
add a comment |
add a comment |
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