id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	uname	nginx_version
1576	When the file is overwritten by the COPY method under the following conditions, content of copied file is not correct.	373kwsk@…		"When the file is overwritten by the COPY method under the following conditions, content of copied file is not correct.


* OS: CentOS 7.4
* Nginx Version: 1.12.2

{{{
# nginx
# ps auxf | grep nginx
root     18826  0.0  0.0 112660   972 pts/1    S+   02:45   0:00  |                       \_ grep --color=auto nginx
root     18797  0.0  0.0  46432   988 ?        Ss   02:17   0:00 nginx: master process nginx
nginx    18798  0.0  0.1  46840  2212 ?        S    02:17   0:00  \_ nginx: worker process
# cd /var/lib/nginx
# ls -l
total 0
lrwxrwxrwx. 1 root  root  14 May 15 07:50 dest -> /ext_disk/dest
drwxr-xr-x. 2 nginx nginx 22 May 15 07:59 source
drwxr-xr-x. 2 nginx nginx  6 May 15 07:35 tmp
# ls -l source/.
total 4
-rw-r--r--. 1 nginx nginx 5 May 15 07:40 copy.txt
# cat source/copy.txt
copy
# ls -l dest/.
total 4
-rw-rw-r--. 1 nginx nginx 31 May 16 02:08 copy.txt
# cat dest/copy.txt
123456789012345678901234567890
# curl -XCOPY http://localhost:8080/source/copy.txt -H Destination:/dest/copy.txt
# ls -l source/.
total 4
-rw-r--r--. 1 nginx nginx 5 May 15 07:40 copy.txt
# cat source/copy.txt
copy
# ls -l dest/.
total 4
-rw-rw-r--. 1 nginx nginx 31 May 15 07:40 copy.txt
# cat dest/copy.txt
copy
6789012345678901234567890
}}}


I have attached the configuration file, the access log, and the error log at the debug level.

The Overwrite header is not specified (The superscription has been permitted).
I expected that the content of ""source/copy.txt"" and ""dest/copy.txt"" were equal as a result of COPY.


However, the top part of ""dest/copy.txt"" is only replaced by ""source/copy.txt"" .
What should I do to get the expected result?"	defect	closed	minor		nginx-module	1.12.x	fixed	WebDAV		Linux vm-search-004.fcxlocal 3.10.0-693.21.1.el7.x86_64 #1 SMP Wed Mar 7 19:03:37 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux	"nginx version: nginx/1.12.2
built by gcc 4.8.5 20150623 (Red Hat 4.8.5-16) (GCC)
built with OpenSSL 1.0.2k-fips  26 Jan 2017
TLS SNI support enabled
configure arguments: --prefix=/etc/nginx --sbin-path=/usr/sbin/nginx --modules-path=/usr/lib64/nginx/modules --conf-path=/etc/nginx/nginx.conf --error-log-path=/var/log/nginx/error.log --http-log-path=/var/log/nginx/access.log --pid-path=/var/run/nginx.pid --lock-path=/var/run/nginx.lock --http-client-body-temp-path=/var/cache/nginx/client_temp --http-proxy-temp-path=/var/cache/nginx/proxy_temp --http-fastcgi-temp-path=/var/cache/nginx/fastcgi_temp --http-uwsgi-temp-path=/var/cache/nginx/uwsgi_temp --http-scgi-temp-path=/var/cache/nginx/scgi_temp --user=nginx --group=nginx --with-compat --with-file-aio --with-threads --with-http_addition_module --with-http_auth_request_module --with-http_dav_module --with-http_flv_module --with-http_gunzip_module --with-http_gzip_static_module --with-http_mp4_module --with-http_random_index_module --with-http_realip_module --with-http_secure_link_module --with-http_slice_module --with-http_ssl_module --with-http_stub_status_module --with-http_sub_module --with-http_v2_module --with-mail --with-mail_ssl_module --with-stream --with-stream_realip_module --with-stream_ssl_module --with-stream_ssl_preread_module --with-cc-opt='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mtune=generic -fPIC' --with-ld-opt='-Wl,-z,relro -Wl,-z,now -pie'"