DF output inconsistency
I moved about 12G files from Linux / partition (to a NFS directory), however it seems that the available size hasn't increased. Here is df result:
Filesystem 1K-blocks Used Available Use% Mounted on
udev 8170624 0 8170624 0% /dev
tmpfs 1637540 153776 1483764 10% /run
/dev/sda5 230964348 215736848 3472084 99% /
xxx.xx.xxx.xx:/volume1/apk 23329711936 16875907896 6453685256 73% /media/storage
For "/dev/sda5", the size of used+available is about 11G (230964348-215736848-3472084) less than the logical partition size.
Which result should I rely on?
hard-disk disk-usage
asked Jan 31 '16 at 2:09
Hongxu ChenHongxu Chen
2,05951624
bumped to the homepage by Community♦ 3 hours ago
This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
add a comment |
I moved about 12G files from Linux / partition (to a NFS directory), however it seems that the available size hasn't increased. Here is df result:
Filesystem 1K-blocks Used Available Use% Mounted on
udev 8170624 0 8170624 0% /dev
tmpfs 1637540 153776 1483764 10% /run
/dev/sda5 230964348 215736848 3472084 99% /
xxx.xx.xxx.xx:/volume1/apk 23329711936 16875907896 6453685256 73% /media/storage
For "/dev/sda5", the size of used+available is about 11G (230964348-215736848-3472084) less than the logical partition size.
Which result should I rely on?
hard-disk disk-usage
asked Jan 31 '16 at 2:09
Hongxu ChenHongxu Chen
2,05951624
bumped to the homepage by Community♦ 3 hours ago
This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
did you simplymvthe files? Or did you use some graphical or other tool? Asking this because there are tools that instead of removing the files put them on a "wastebasket" area...
– Rmano
Jan 31 '16 at 9:58
@Rmano i'm simply usingmv. since the moved folder is large (12G) and contains many files, the mv procedure last several hours. i suspected that something (internally) was wrong during the move, but not sure.
– Hongxu Chen
Jan 31 '16 at 11:17
add a comment |
I moved about 12G files from Linux / partition (to a NFS directory), however it seems that the available size hasn't increased. Here is df result:
Filesystem 1K-blocks Used Available Use% Mounted on
udev 8170624 0 8170624 0% /dev
tmpfs 1637540 153776 1483764 10% /run
/dev/sda5 230964348 215736848 3472084 99% /
xxx.xx.xxx.xx:/volume1/apk 23329711936 16875907896 6453685256 73% /media/storage
For "/dev/sda5", the size of used+available is about 11G (230964348-215736848-3472084) less than the logical partition size.
Which result should I rely on?
hard-disk disk-usage
asked Jan 31 '16 at 2:09
Hongxu ChenHongxu Chen
2,05951624
I moved about 12G files from Linux / partition (to a NFS directory), however it seems that the available size hasn't increased. Here is df result:
Filesystem 1K-blocks Used Available Use% Mounted on
udev 8170624 0 8170624 0% /dev
tmpfs 1637540 153776 1483764 10% /run
/dev/sda5 230964348 215736848 3472084 99% /
xxx.xx.xxx.xx:/volume1/apk 23329711936 16875907896 6453685256 73% /media/storage
For "/dev/sda5", the size of used+available is about 11G (230964348-215736848-3472084) less than the logical partition size.
Which result should I rely on?
hard-disk disk-usage
hard-disk disk-usage
asked Jan 31 '16 at 2:09
Hongxu ChenHongxu Chen
2,05951624
asked Jan 31 '16 at 2:09
Hongxu ChenHongxu Chen
2,05951624
edited Jan 31 '16 at 2:17
Hongxu Chen
asked Jan 31 '16 at 2:09
Hongxu ChenHongxu Chen
2,05951624
asked Jan 31 '16 at 2:09
Hongxu ChenHongxu Chen
2,05951624
asked Jan 31 '16 at 2:09
Hongxu ChenHongxu Chen
2,05951624
2,05951624
bumped to the homepage by Community♦ 3 hours ago
This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
bumped to the homepage by Community♦ 3 hours ago
This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
did you simplymvthe files? Or did you use some graphical or other tool? Asking this because there are tools that instead of removing the files put them on a "wastebasket" area...
– Rmano
Jan 31 '16 at 9:58
@Rmano i'm simply usingmv. since the moved folder is large (12G) and contains many files, the mv procedure last several hours. i suspected that something (internally) was wrong during the move, but not sure.
– Hongxu Chen
Jan 31 '16 at 11:17
add a comment |
did you simplymvthe files? Or did you use some graphical or other tool? Asking this because there are tools that instead of removing the files put them on a "wastebasket" area...
– Rmano
Jan 31 '16 at 9:58
@Rmano i'm simply usingmv. since the moved folder is large (12G) and contains many files, the mv procedure last several hours. i suspected that something (internally) was wrong during the move, but not sure.
– Hongxu Chen
Jan 31 '16 at 11:17
did you simply
mv the files? Or did you use some graphical or other tool? Asking this because there are tools that instead of removing the files put them on a "wastebasket" area...– Rmano
Jan 31 '16 at 9:58
did you simply
mv the files? Or did you use some graphical or other tool? Asking this because there are tools that instead of removing the files put them on a "wastebasket" area...– Rmano
Jan 31 '16 at 9:58
@Rmano i'm simply using
mv. since the moved folder is large (12G) and contains many files, the mv procedure last several hours. i suspected that something (internally) was wrong during the move, but not sure.– Hongxu Chen
Jan 31 '16 at 11:17
@Rmano i'm simply using
mv. since the moved folder is large (12G) and contains many files, the mv procedure last several hours. i suspected that something (internally) was wrong during the move, but not sure.– Hongxu Chen
Jan 31 '16 at 11:17
add a comment |
2 Answers
2
active
oldest
votes
The difference is due to Linux reserving 5% of the space (by default) on the file system for the root user. You can tell that in your case, the missing amount is 5% of the total amount. This reserved space is not considered available, nor is it in use. Thus, all the figures are correct.
Linux does this for various reasons. For one, if something were to fill up the disk completely, it would actually only fill up 95%. That way, there is still some maneuvering room for the system processes and the root user to fix the problem without the whole system crashing. Second, some file systems (ext2/3 in particular) will start to suffer from fragmentation when operating at near capacity for an extended time, degrading performance.
answered Jan 31 '16 at 2:54
marinusmarinus
1,6661110
1
but the fact is that i've moved about 12G size files from/to other disks, which means that it had already occupies the reerving 5% space before (and i remember that the available space at that time has already become 99% or even 100%, with little space available).
– Hongxu Chen
Jan 31 '16 at 4:23
add a comment |
Did the move complete? Are there any open file handles to the files?
I ask because you can delete an open file and it will be removed from the directory listing but the disk space won't be freed until the last open file handle is closed.
answered Jan 31 '16 at 4:37
Chad ClarkChad Clark
26614
yes, the move is complete.
– Hongxu Chen
Jan 31 '16 at 5:26
2
lsofcould show you any that you may have overlooked. Likewise, rebooting tends to clear out processes.
– Thomas Dickey
Jan 31 '16 at 11:54
add a comment |
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2 Answers
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2 Answers
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The difference is due to Linux reserving 5% of the space (by default) on the file system for the root user. You can tell that in your case, the missing amount is 5% of the total amount. This reserved space is not considered available, nor is it in use. Thus, all the figures are correct.
Linux does this for various reasons. For one, if something were to fill up the disk completely, it would actually only fill up 95%. That way, there is still some maneuvering room for the system processes and the root user to fix the problem without the whole system crashing. Second, some file systems (ext2/3 in particular) will start to suffer from fragmentation when operating at near capacity for an extended time, degrading performance.
answered Jan 31 '16 at 2:54
marinusmarinus
1,6661110
1
but the fact is that i've moved about 12G size files from/to other disks, which means that it had already occupies the reerving 5% space before (and i remember that the available space at that time has already become 99% or even 100%, with little space available).
– Hongxu Chen
Jan 31 '16 at 4:23
add a comment |
The difference is due to Linux reserving 5% of the space (by default) on the file system for the root user. You can tell that in your case, the missing amount is 5% of the total amount. This reserved space is not considered available, nor is it in use. Thus, all the figures are correct.
Linux does this for various reasons. For one, if something were to fill up the disk completely, it would actually only fill up 95%. That way, there is still some maneuvering room for the system processes and the root user to fix the problem without the whole system crashing. Second, some file systems (ext2/3 in particular) will start to suffer from fragmentation when operating at near capacity for an extended time, degrading performance.
answered Jan 31 '16 at 2:54
marinusmarinus
1,6661110
1
but the fact is that i've moved about 12G size files from/to other disks, which means that it had already occupies the reerving 5% space before (and i remember that the available space at that time has already become 99% or even 100%, with little space available).
– Hongxu Chen
Jan 31 '16 at 4:23
add a comment |
The difference is due to Linux reserving 5% of the space (by default) on the file system for the root user. You can tell that in your case, the missing amount is 5% of the total amount. This reserved space is not considered available, nor is it in use. Thus, all the figures are correct.
Linux does this for various reasons. For one, if something were to fill up the disk completely, it would actually only fill up 95%. That way, there is still some maneuvering room for the system processes and the root user to fix the problem without the whole system crashing. Second, some file systems (ext2/3 in particular) will start to suffer from fragmentation when operating at near capacity for an extended time, degrading performance.
answered Jan 31 '16 at 2:54
marinusmarinus
1,6661110
The difference is due to Linux reserving 5% of the space (by default) on the file system for the root user. You can tell that in your case, the missing amount is 5% of the total amount. This reserved space is not considered available, nor is it in use. Thus, all the figures are correct.
Linux does this for various reasons. For one, if something were to fill up the disk completely, it would actually only fill up 95%. That way, there is still some maneuvering room for the system processes and the root user to fix the problem without the whole system crashing. Second, some file systems (ext2/3 in particular) will start to suffer from fragmentation when operating at near capacity for an extended time, degrading performance.
answered Jan 31 '16 at 2:54
marinusmarinus
1,6661110
answered Jan 31 '16 at 2:54
marinusmarinus
1,6661110
answered Jan 31 '16 at 2:54
marinusmarinus
1,6661110
answered Jan 31 '16 at 2:54
marinusmarinus
1,6661110
1,6661110
1
but the fact is that i've moved about 12G size files from/to other disks, which means that it had already occupies the reerving 5% space before (and i remember that the available space at that time has already become 99% or even 100%, with little space available).
– Hongxu Chen
Jan 31 '16 at 4:23
add a comment |
1
but the fact is that i've moved about 12G size files from/to other disks, which means that it had already occupies the reerving 5% space before (and i remember that the available space at that time has already become 99% or even 100%, with little space available).
– Hongxu Chen
Jan 31 '16 at 4:23
1
1
but the fact is that i've moved about 12G size files from
/ to other disks, which means that it had already occupies the reerving 5% space before (and i remember that the available space at that time has already become 99% or even 100%, with little space available).– Hongxu Chen
Jan 31 '16 at 4:23
but the fact is that i've moved about 12G size files from
/ to other disks, which means that it had already occupies the reerving 5% space before (and i remember that the available space at that time has already become 99% or even 100%, with little space available).– Hongxu Chen
Jan 31 '16 at 4:23
add a comment |
Did the move complete? Are there any open file handles to the files?
I ask because you can delete an open file and it will be removed from the directory listing but the disk space won't be freed until the last open file handle is closed.
answered Jan 31 '16 at 4:37
Chad ClarkChad Clark
26614
yes, the move is complete.
– Hongxu Chen
Jan 31 '16 at 5:26
2
lsofcould show you any that you may have overlooked. Likewise, rebooting tends to clear out processes.
– Thomas Dickey
Jan 31 '16 at 11:54
add a comment |
Did the move complete? Are there any open file handles to the files?
I ask because you can delete an open file and it will be removed from the directory listing but the disk space won't be freed until the last open file handle is closed.
answered Jan 31 '16 at 4:37
Chad ClarkChad Clark
26614
yes, the move is complete.
– Hongxu Chen
Jan 31 '16 at 5:26
2
lsofcould show you any that you may have overlooked. Likewise, rebooting tends to clear out processes.
– Thomas Dickey
Jan 31 '16 at 11:54
add a comment |
Did the move complete? Are there any open file handles to the files?
I ask because you can delete an open file and it will be removed from the directory listing but the disk space won't be freed until the last open file handle is closed.
answered Jan 31 '16 at 4:37
Chad ClarkChad Clark
26614
Did the move complete? Are there any open file handles to the files?
I ask because you can delete an open file and it will be removed from the directory listing but the disk space won't be freed until the last open file handle is closed.
answered Jan 31 '16 at 4:37
Chad ClarkChad Clark
26614
answered Jan 31 '16 at 4:37
Chad ClarkChad Clark
26614
answered Jan 31 '16 at 4:37
Chad ClarkChad Clark
26614
answered Jan 31 '16 at 4:37
Chad ClarkChad Clark
26614
26614
yes, the move is complete.
– Hongxu Chen
Jan 31 '16 at 5:26
2
lsofcould show you any that you may have overlooked. Likewise, rebooting tends to clear out processes.
– Thomas Dickey
Jan 31 '16 at 11:54
add a comment |
yes, the move is complete.
– Hongxu Chen
Jan 31 '16 at 5:26
2
lsofcould show you any that you may have overlooked. Likewise, rebooting tends to clear out processes.
– Thomas Dickey
Jan 31 '16 at 11:54
yes, the move is complete.
– Hongxu Chen
Jan 31 '16 at 5:26
yes, the move is complete.
– Hongxu Chen
Jan 31 '16 at 5:26
2
2
lsof could show you any that you may have overlooked. Likewise, rebooting tends to clear out processes.– Thomas Dickey
Jan 31 '16 at 11:54
lsof could show you any that you may have overlooked. Likewise, rebooting tends to clear out processes.– Thomas Dickey
Jan 31 '16 at 11:54
add a comment |
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did you simply
mvthe files? Or did you use some graphical or other tool? Asking this because there are tools that instead of removing the files put them on a "wastebasket" area...– Rmano
Jan 31 '16 at 9:58
@Rmano i'm simply using
mv. since the moved folder is large (12G) and contains many files, the mv procedure last several hours. i suspected that something (internally) was wrong during the move, but not sure.– Hongxu Chen
Jan 31 '16 at 11:17