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Two different xfs filesystems on two different Fedora.

  1. Why one of them records Birth(crtime) in the inode and why the other one doesn't?
  2. How to find the configuration/attribute differences between the two filesystems?

#1 XFS v5 (Fedora 30):

# stat tea.txt File: tea.txt Size: 0 Blocks: 0 IO Block: 4096 regular empty file Device: fd01h/64769d Inode: 17477205 Links: 1 Access: (0644/-rw-r--r--) Uid: ( 0/ root) Gid: ( 0/ root) Context: unconfined_u:object_r:admin_home_t:s0 Access: 2020-06-29 20:49:05.667633345 +0100 Modify: 2020-06-29 20:49:05.667633345 +0100 Change: 2020-06-29 20:49:05.667633345 +0100 Birth: 2020-06-29 20:49:05.667633345 +0100 xfs_db> version versionnum [0xb4b5+0x18a] = V5,NLINK,DIRV2,ATTR,ALIGN,LOGV2,EXTFLG,MOREBITS,ATTR2,LAZYSBCOUNT,PROJID32BIT,CRC,FTYPE,FINOBT # xfs_info /dev/sda1 meta-data=/dev/sda1 isize=512 agcount=5, agsize=1376256 blks = sectsz=512 attr=2, projid32bit=1 = crc=1 finobt=1, sparse=0, rmapbt=0 = reflink=0 data = bsize=4096 blocks=6291456, imaxpct=25 = sunit=0 swidth=0 blks naming =version 2 bsize=4096 ascii-ci=0, ftype=1 log =internal log bsize=4096 blocks=2688, version=2 = sectsz=512 sunit=0 blks, lazy-count=1 realtime =none extsz=4096 blocks=0, rtextents=0 

#2 XFS v5 (Fedora 32):

# stat tea2.txt File: tea2.txt Size: 0 Blocks: 0 IO Block: 4096 regular empty file Device: 700h/1792d Inode: 132 Links: 1 Access: (0644/-rw-r--r--) Uid: ( 0/ root) Gid: ( 0/ root) Context: unconfined_u:object_r:unlabeled_t:s0 Access: 2020-06-29 20:59:26.855416418 +0100 Modify: 2020-06-29 20:59:26.855416418 +0100 Change: 2020-06-29 20:59:26.855416418 +0100 Birth: - xfs_db> version versionnum [0xb4b5+0x18a] = V5,NLINK,DIRV2,ATTR,ALIGN,LOGV2,EXTFLG,MOREBITS,ATTR2,LAZYSBCOUNT,PROJID32BIT,CRC,FTYPE,FINOBT # xfs_info /dev/sda1 meta-data=/dev/sda1 isize=512 agcount=4, agsize=11796480 blks = sectsz=512 attr=2, projid32bit=1 = crc=1 finobt=1, sparse=0, rmapbt=0 = reflink=0 data = bsize=4096 blocks=47185920, imaxpct=25 = sunit=0 swidth=0 blks naming =version 2 bsize=4096 ascii-ci=0, ftype=1 log =internal log bsize=4096 blocks=23040, version=2 = sectsz=512 sunit=0 blks, lazy-count=1 realtime =none extsz=4096 blocks=0, rtextents=0 
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  • Can you edit your question and add the options with which each are mounted (e.g., the output of the mount command for the given filesystems? Commented Jun 29, 2020 at 22:15
  • Possibly a duplicate of What file systems on Linux store the creation time?, and oh so many other topics here on SE. Commented Jun 29, 2020 at 23:50
  • 1
    Probably they are running different kernel versions and only one of them adds this info. Commented Jun 30, 2020 at 5:24

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