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zdtm: mountpoints -- Explicitly remove old /dev/null

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We should explicitly unlink old /dev/null instance, otherwise
if such device already exist we might hit a problem as

 | (00.002984) 7412 fdinfo 0: pos: 0x               0 flags:           100002/0
 | (00.003015) Dumping path for 0 fd via self 42 [/dev/null]
 | (00.003025) Error (files-reg.c:422): Unaccessible path opened 2049:109720, need 5:10
 | (00.003033) Error (cr-dump.c:1565): Dump files (pid: 7412) failed with -1

Reported-by: Alexander Kartashov <alekskartashov@parallels.com>
Tested-by: Alexander Kartashov <alekskartashov@parallels.com>
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
This commit is contained in:
Cyrill Gorcunov
2012-12-26 20:00:46 +04:00
committed by Pavel Emelyanov
parent 087739d402
commit a1144f9fd1
1 changed files with 1 additions and 0 deletions
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test/zdtm/live/static/mountpoints.c
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@@ -92,6 +92,7 @@ done:
return 1;
}
unlink("/dev/null");
mknod("/dev/null", 0777 | S_IFCHR, makedev(1, 3));
setup_outfile();