https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=278440
Bug ID: 278440
Summary: [UFS] unxz makes a file which reports wrong usage
block size by /usr/bin/du
Product: Base System
Version: 14.0-RELEASE
Hardware: Any
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: kern
Assignee: [email protected]
Reporter: [email protected]
A file which reports wrong(?) disk block usage size is made
when /usr/bin/unxz-ing FreeBSD install image on UFS.
See the procedure below.
+-------------------------------------------------------------------
|% uname -a
|FreeBSD oxygen 14.0-RELEASE FreeBSD 14.0-RELEASE #2: Fri Apr 12 13:31:59 JST
2024 uratan@oxygen:/usr/src/sys/i386/compile/OXYGEN i386
|% df .
|Filesystem 1M-blocks Used Avail Capacity Mounted on
|/dev/ada0p5 3666866 3313160 60356 98% /home
|% mount | fgrep home
|/dev/ada0p5 on /home (ufs, NFS exported, local, noatime, soft-updates)
|
|% ls
|test0/
|% ls -l test0/
|total 638
|-rwxrw-r-- 1 nobody nobody 668057816 Apr 18 23:28
FreeBSD-14.0-RELEASE-i386-memstick.img.xz*
|
|% cp -pir test0 test1
|
|% cd test1
|% unxz FreeBSD-14.0-RELEASE-i386-memstick.img.xz
|% mkdir ../test2
|% rsync FreeBSD-14.0-RELEASE-i386-memstick.img ../test2/
|% cd ..
|
|% du test*
|638 test0 <--- has downloaded *.img.xz
>>|909 test1 <--- /usr/bin/unxz it
>>|1041 test2 <--- copy *.img by /usr/local/bin/rsync
|
|% ls -lh test*
|test0:
|total 638
|-rwxrw-r-- 1 nobody nobody 637M Apr 18 23:28
FreeBSD-14.0-RELEASE-i386-memstick.img.xz*
|test1:
>>|total 909
>>|-rwxrw-r-- 1 uratan nobody 1.0G Apr 18 23:28
>>FreeBSD-14.0-RELEASE-i386-memstick.img*
|test2:
>>|total 1041
>>|-rwxr--r-- 1 uratan nobody 1.0G Apr 19 00:16
>>FreeBSD-14.0-RELEASE-i386-memstick.img*
|
|% sha256 test*/Free*
|SHA256 (test0/FreeBSD-14.0-RELEASE-i386-memstick.img.xz) =
c558a19cf17deed6b93cee28356c1d405e2488127c57b7202cc296486308ac4d
|SHA256 (test1/FreeBSD-14.0-RELEASE-i386-memstick.img) =
dd8a5d36f424d7d6448fb1350c033025c66909ebeecf8cee03baa6f25d23a640
|SHA256 (test2/FreeBSD-14.0-RELEASE-i386-memstick.img) =
dd8a5d36f424d7d6448fb1350c033025c66909ebeecf8cee03baa6f25d23a640
|
+-------------------------------------------------------------------
Is this a BUG ? of which ?
- * - * -
note.1
The wrongness is also copied when copying the strange file
by /bin/cp, /usr/bin/tar or /bin/cat > xxx.
note.2
Also redirecting with 'xzcat *.img.xz > *.img' makes strange file.
note.3
/bin/df also reports wrong(?) size.
note.4
This phenomenon has been happening on my current home-server
using FreeBSD 10.2R(i386).
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