Then I created a file in ~/local/ and copied that to ~/remote/ I mounted a share of my 520 on my Linux laptop, on ~/remote/ using cifs. 30 bits of that is used to give the stamps a nanosecond resolution, while the 2 remaining bits are used to extend the seconds range to 34 bits, yielding a range from 14 December 1901 to. On top of that an extra 32 bits is added in a new header. On ext4 the 32 bits stamp is used unsigned, which changes the range to 1 January 1970 to 7 February 2106. The 32 bits signed gives a range from 14 December 1901 to 18 January 2038. ![]() Ext3 and older used a 32 bit signed timestamp in seconds, UNIX time, where '0' is 1 January 1970, 00:00:00 UTC. ![]() The NAS uses ext4 for filesystem of the data partitions. The timestamp we are talking about here is probably mtime. ![]() Birth is the time a file is added to the filesystem. Ctime changes because mtime changes, which is a metadata change. But if you change the file, both mtime and ctime change. So when you change ownership, the ctime is changed, but mtime is not. ![]() Modify is about modification of the file, while Change is about modification of the inode, which keeps the metadata. Access is about last time read (which is nowadays by default hardly updated anymore, to save write cycles). That's an intriguing question! First, in Linux (your NAS runs Linux) in ext4 a file has 4 timestamps, atime, mtime, ctime and btime.
0 Comments
Leave a Reply. |