09-14-2012
Quote:
"du" includes /proc, which is process memory, whereas df does not.
That would be another serious bug if true. /proc doesn't use disk space so
du should report 0 blocks for any file in it.
---------- Post updated at 16:42 ---------- Previous update was at 16:37 ----------
Quote:
Originally Posted by
hicksd8
From my experience of SCO, /stand holds the currently booted kernel files, is indeed a separate filesystem written by the installer. Without /stand the system won't boot. The files in /stand are not significant in size. /stand is mounted at boot time and remains mounted continuously.
For any files to exist under the mount point, /stand would have had to have been deliberately and manually dismounted (can be done) and files put into that directory. Unless done deliberately nothing will exist in that folder.
Having a mount hiding file is a common reason for unaccounted disk space. I was just trying to explain that to the OP, not telling this is the only possible source cause.
Quote:
I'm only saying this because I believe all subscribers to this thread are on the wrong track (pursuing /stand) as to the answer to the OP's question.
Well, jgt just demonstrated the OP issue is not well understood. Suggesting du would add up space not present on disk wouldn't explain the OP issue as it is the opposite which is observed (too less space reported by du, not too much).
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LEARN ABOUT DEBIAN
xfs_freeze
xfs_freeze(8) System Manager's Manual xfs_freeze(8)
NAME
xfs_freeze - suspend access to an XFS filesystem
SYNOPSIS
xfs_freeze -f | -u mount-point
DESCRIPTION
xfs_freeze suspends and resumes access to an XFS filesystem (see xfs(5)).
xfs_freeze halts new access to the filesystem and creates a stable image on disk. xfs_freeze is intended to be used with volume managers
and hardware RAID devices that support the creation of snapshots.
The mount-point argument is the pathname of the directory where the filesystem is mounted. The filesystem must be mounted to be frozen
(see mount(8)).
The -f flag requests the specified XFS filesystem to be frozen from new modifications. When this is selected, all ongoing transactions in
the filesystem are allowed to complete, new write system calls are halted, other calls which modify the filesystem are halted, and all
dirty data, metadata, and log information are written to disk. Any process attempting to write to the frozen filesystem will block waiting
for the filesystem to be unfrozen.
Note that even after freezing, the on-disk filesystem can contain information on files that are still in the process of unlinking. These
files will not be unlinked until the filesystem is unfrozen or a clean mount of the snapshot is complete.
The -u flag is used to un-freeze the filesystem and allow operations to continue. Any filesystem modifications that were blocked by the
freeze are unblocked and allowed to complete.
One of -f or -u must be supplied to xfs_freeze.
NOTES
A copy of a frozen XFS filesystem will usually have the same universally unique identifier (UUID) as the original, and thus may be pre-
vented from being mounted. The XFS nouuid mount option can be used to circumvent this issue.
In Linux kernel version 2.6.29, the interface which XFS uses to freeze and unfreeze was elevated to the VFS, so that this tool can now be
used on many other Linux filesystems.
SEE ALSO
xfs(5), lvm(8), mount(8).
xfs_freeze(8)