Copying from one filesystem to another while preserving file attributes
I am trying to copy the contents of one filesystem to another while preserving file ownership and permissions. I am currently trying
sudo cp -pR /media/myself/fs1/* /media/myself/fs2/
The copy job is still in progress but I am seeing that the first top-level dir on the target belongs to root, while the original belongs to my user account.
(Actually fs1 was from another computer but user IDs coincidentally match.)
fs1 is ext4 while fs2 is btrfs. Both are external hard disks, auto-mounted by Ubuntu after I plugged them in.
How can I ensure all numeric owner and group IDs (including those not found on the workstation used for the copy job), as well as permissions, are preserved?
permissions filesystem copy
asked Jan 15 at 17:20
user149408user149408
581715
add a comment |
I am trying to copy the contents of one filesystem to another while preserving file ownership and permissions. I am currently trying
sudo cp -pR /media/myself/fs1/* /media/myself/fs2/
The copy job is still in progress but I am seeing that the first top-level dir on the target belongs to root, while the original belongs to my user account.
(Actually fs1 was from another computer but user IDs coincidentally match.)
fs1 is ext4 while fs2 is btrfs. Both are external hard disks, auto-mounted by Ubuntu after I plugged them in.
How can I ensure all numeric owner and group IDs (including those not found on the workstation used for the copy job), as well as permissions, are preserved?
permissions filesystem copy
asked Jan 15 at 17:20
user149408user149408
581715
add a comment |
I am trying to copy the contents of one filesystem to another while preserving file ownership and permissions. I am currently trying
sudo cp -pR /media/myself/fs1/* /media/myself/fs2/
The copy job is still in progress but I am seeing that the first top-level dir on the target belongs to root, while the original belongs to my user account.
(Actually fs1 was from another computer but user IDs coincidentally match.)
fs1 is ext4 while fs2 is btrfs. Both are external hard disks, auto-mounted by Ubuntu after I plugged them in.
How can I ensure all numeric owner and group IDs (including those not found on the workstation used for the copy job), as well as permissions, are preserved?
permissions filesystem copy
asked Jan 15 at 17:20
user149408user149408
581715
I am trying to copy the contents of one filesystem to another while preserving file ownership and permissions. I am currently trying
sudo cp -pR /media/myself/fs1/* /media/myself/fs2/
The copy job is still in progress but I am seeing that the first top-level dir on the target belongs to root, while the original belongs to my user account.
(Actually fs1 was from another computer but user IDs coincidentally match.)
fs1 is ext4 while fs2 is btrfs. Both are external hard disks, auto-mounted by Ubuntu after I plugged them in.
How can I ensure all numeric owner and group IDs (including those not found on the workstation used for the copy job), as well as permissions, are preserved?
permissions filesystem copy
permissions filesystem copy
asked Jan 15 at 17:20
user149408user149408
581715
asked Jan 15 at 17:20
user149408user149408
581715
asked Jan 15 at 17:20
user149408user149408
581715
asked Jan 15 at 17:20
user149408user149408
581715
asked Jan 15 at 17:20
user149408user149408
581715
581715
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
As a workaround, since I am on a desktop system, I am now using Unison (with sudo) to do the copying, with the following profile:
label = Disk content migration
root = /media/myself/fs1
root = /media/myself/fs2
owner = true
numericids = true
group = true
dontchmod = false
noupdate = /media/myself/fs1
perms = -1
times = true
owner and group are options to sync owner and group, respectively. numericids tells Unison to use numeric IDs rather than user names.
dontchmod and perms instruct Unison to sync all permissions, including setuid/setgid (which is desired here, as I am preparing a replacement disk with a different filesystem).
times tells Unison to sync timestamps.
noupdate with the path to the original volume prevents Unison from accidentally modifying the original filesystem.
answered Jan 15 at 17:20
user149408user149408
581715
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
As a workaround, since I am on a desktop system, I am now using Unison (with sudo) to do the copying, with the following profile:
label = Disk content migration
root = /media/myself/fs1
root = /media/myself/fs2
owner = true
numericids = true
group = true
dontchmod = false
noupdate = /media/myself/fs1
perms = -1
times = true
owner and group are options to sync owner and group, respectively. numericids tells Unison to use numeric IDs rather than user names.
dontchmod and perms instruct Unison to sync all permissions, including setuid/setgid (which is desired here, as I am preparing a replacement disk with a different filesystem).
times tells Unison to sync timestamps.
noupdate with the path to the original volume prevents Unison from accidentally modifying the original filesystem.
answered Jan 15 at 17:20
user149408user149408
581715
add a comment |
As a workaround, since I am on a desktop system, I am now using Unison (with sudo) to do the copying, with the following profile:
label = Disk content migration
root = /media/myself/fs1
root = /media/myself/fs2
owner = true
numericids = true
group = true
dontchmod = false
noupdate = /media/myself/fs1
perms = -1
times = true
owner and group are options to sync owner and group, respectively. numericids tells Unison to use numeric IDs rather than user names.
dontchmod and perms instruct Unison to sync all permissions, including setuid/setgid (which is desired here, as I am preparing a replacement disk with a different filesystem).
times tells Unison to sync timestamps.
noupdate with the path to the original volume prevents Unison from accidentally modifying the original filesystem.
answered Jan 15 at 17:20
user149408user149408
581715
add a comment |
As a workaround, since I am on a desktop system, I am now using Unison (with sudo) to do the copying, with the following profile:
label = Disk content migration
root = /media/myself/fs1
root = /media/myself/fs2
owner = true
numericids = true
group = true
dontchmod = false
noupdate = /media/myself/fs1
perms = -1
times = true
owner and group are options to sync owner and group, respectively. numericids tells Unison to use numeric IDs rather than user names.
dontchmod and perms instruct Unison to sync all permissions, including setuid/setgid (which is desired here, as I am preparing a replacement disk with a different filesystem).
times tells Unison to sync timestamps.
noupdate with the path to the original volume prevents Unison from accidentally modifying the original filesystem.
answered Jan 15 at 17:20
user149408user149408
581715
As a workaround, since I am on a desktop system, I am now using Unison (with sudo) to do the copying, with the following profile:
label = Disk content migration
root = /media/myself/fs1
root = /media/myself/fs2
owner = true
numericids = true
group = true
dontchmod = false
noupdate = /media/myself/fs1
perms = -1
times = true
owner and group are options to sync owner and group, respectively. numericids tells Unison to use numeric IDs rather than user names.
dontchmod and perms instruct Unison to sync all permissions, including setuid/setgid (which is desired here, as I am preparing a replacement disk with a different filesystem).
times tells Unison to sync timestamps.
noupdate with the path to the original volume prevents Unison from accidentally modifying the original filesystem.
answered Jan 15 at 17:20
user149408user149408
581715
edited Jan 15 at 17:58
answered Jan 15 at 17:20
user149408user149408
581715
answered Jan 15 at 17:20
user149408user149408
581715
answered Jan 15 at 17:20
user149408user149408
581715
581715
add a comment |
add a comment |
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