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Tailing forever and by-name (--follow=name, -F), tail would sometimes fail to follow a file that had been removed via rename. If you can't apply this patch and have tail 7.6 or newer, you can work around the bug via the undocumented --disable-inotify option. * src/tail.c (tail_forever_inotify): When tailing by name (-F), do not un-watch a file upon receipt of the IN_MOVE_SELF event. Reported by Arjan Opmeer in http://bugs.debian.org/548439. * NEWS (Bug fixes): Mention it. Also see http://marc.info/?l=coreutils-bug&m=125829031916515 * tests/Makefile.am (TESTS): Add tail-2/inotify-rotate. * tests/tail-2/inotify-rotate: New test.
56 lines
1.6 KiB
Bash
Executable File
56 lines
1.6 KiB
Bash
Executable File
#!/bin/sh
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# ensure that tail -F handles rotation
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# Copyright (C) 2009 Free Software Foundation, Inc.
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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if test "$VERBOSE" = yes; then
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set -x
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tail --version
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fi
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. $srcdir/test-lib.sh
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expensive_
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# For details, see
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# http://lists.gnu.org/archive/html/bug-coreutils/2009-11/msg00213.html
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# Perform at least this many iterations, because on multi-core systems
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# the offending sequence of events can be surprisingly uncommon.
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for i in $(seq 50); do
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echo $i
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rm -rf k x out
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:>k && :>x && timeout 10 tail -F k > out 2>&1 &
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pid=$!
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sleep .1
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echo b > k;
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# wait for b to appear in out
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while :; do grep b out > /dev/null && break; done
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mv x k
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# wait for tail to detect the rename
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while :; do grep tail: out > /dev/null && break; done
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echo ok >> k
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found=0
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# wait up to 10 seconds for "ok" to appear in out
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for j in $(seq 100); do
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grep ok out > /dev/null && { found=1; break; }
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sleep 0.1
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done
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kill $pid
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test $found = 0 && { fail=1; cat out; break; }
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done
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Exit $fail
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