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From: Dennis Kaarsemaker <dennis@kaarsemaker.net>
To: Junio C Hamano <gitster@pobox.com>,
	David Turner <dturner@twopensource.com>
Cc: git@vger.kernel.org, pclouds@gmail.com
Subject: Re: [PATCH v9 00/19] index-helper/watchman
Date: Tue, 10 May 2016 19:28:24 +0200	[thread overview]
Message-ID: <1462901304.11954.5.camel@kaarsemaker.net> (raw)
In-Reply-To: <xmqqtwi6svzx.fsf@gitster.mtv.corp.google.com>

On ma, 2016-05-09 at 15:32 -0700, Junio C Hamano wrote:
> Junio C Hamano <gitster@pobox.com> writes:
> 
> > 
> > David Turner <dturner@twopensource.com> writes:
> > 
> > > 
> > > On Mon, 2016-05-09 at 14:40 -0700, Junio C Hamano wrote:
> > > > 
> > > > Hmmm, I seem to be getting
> > > > 
> > > >     $ cat t/trash*7900*/err
> > > >     fatal: Already running
> > > > 
> > > > after running t7900 and it fails at #5, after applying
> > > > "index-helper: optionally automatically run"
> The symptom looks pretty similar to $gmane/293461 reported earlier.
> Here is how "t7900-index-helper.sh -i -v -x -d" ends.
> 
> 
> expecting success:
>         test_when_finished "git index-helper --kill" &&
>         rm -f .git/index-helper.sock &&
>         git status &&
>         test_path_is_missing .git/index-helper.sock &&
>         test_config indexhelper.autorun true &&
>         git status &&
>         test -S .git/index-helper.sock &&
>         git status 2>err &&
>         test -S .git/index-helper.sock &&
>         test_must_be_empty err &&
>         git index-helper --kill &&
>         test_config indexhelper.autorun false &&
>         git status &&
>         test_path_is_missing .git/index-helper.sock
> 
> + test_when_finished git index-helper --kill
> + test 0 = 0
> + test_cleanup={ git index-helper --kill
>                 } && (exit "$eval_ret"); eval_ret=$?; :
> + rm -f .git/index-helper.sock
> + git status
> On branch master
> Untracked files:
>   (use "git add <file>..." to include in what will be committed)
> 
>         err
> 
> nothing added to commit but untracked files present (use "git add" to
> track)
> + test_path_is_missing .git/index-helper.sock
> + test -e .git/index-helper.sock
> + test_config indexhelper.autorun true
> + config_dir=
> + test indexhelper.autorun = -C
> + test_when_finished test_unconfig  'indexhelper.autorun'
> + test 0 = 0
> + test_cleanup={ test_unconfig  'indexhelper.autorun'
>                 } && (exit "$eval_ret"); eval_ret=$?; { git index-
> helper --kill
>                 } && (exit "$eval_ret"); eval_ret=$?; :
> + git config indexhelper.autorun true
> + git status
> error: last command exited with $?=141
> not ok 5 - index-helper autorun works
> #
> #               test_when_finished "git index-helper --kill" &&
> #               rm -f .git/index-helper.sock &&
> #               git status &&
> #               test_path_is_missing .git/index-helper.sock &&
> #               test_config indexhelper.autorun true &&
> #               git status &&
> #               test -S .git/index-helper.sock &&
> #               git status 2>err &&
> #               test -S .git/index-helper.sock &&
> #               test_must_be_empty err &&
> #               git index-helper --kill &&
> #               test_config indexhelper.autorun false &&
> #               git status &&
> #               test_path_is_missing .git/index-helper.sock
> #

Here are the relevant bits of a strace, pid 22200 is the second git
status, 222197 is the index helper. 22122 is the test script

22200 socket(PF_LOCAL, SOCK_STREAM, 0)  = 7
22200 connect(7, {sa_family=AF_LOCAL, sun_path=".git/index-helper.sock"}, 110 <unfinished ...>
22197 <... poll resumed> )              = 1
22197 accept(7, 0, NULL)                = 8
22197 fcntl(8, F_GETFL)                 = 0x2 (flags O_RDWR)
22197 fcntl(8, F_SETFL, O_RDWR)         = 0
22197 read(8,  <unfinished ...>
22200 <... connect resumed> )           = 0
22200 rt_sigaction(SIGPIPE, {SIG_IGN, [PIPE], SA_RESTORER|SA_RESTART, 0x7fcc463fdd40}, {SIG_DFL, [PIPE], SA_RESTORER|SA_RESTART, 0x7fcc463fdd40}, 8) = 0
22200 write(7, "000fpoke 22200 ", 15 <unfinished ...>
22197 <... read resumed> 0x7ffc4e4b9b20, 4) = 4
22197 read(8, 0x7ffc4e4b9c70, 11)       = 11
22197 write(8, 0x18b08b0, 6)            = 6
22197 close(8)                          = 0
22197 poll([?] 0x7ffc4e4b9b80, 1, 600000 <unfinished ...>
22200 <... write resumed> )             = 15
22200 write(7, "0000", 4)               = -1 EPIPE (Broken pipe)
22200 --- SIGPIPE {si_signo=SIGPIPE, si_code=SI_USER, si_pid=22200, si_uid=1000} ---
22200 rt_sigaction(SIGPIPE, {SIG_DFL, [PIPE], SA_RESTORER|SA_RESTART, 0x7fcc463fdd40}, {SIG_IGN, [PIPE], SA_RESTORER|SA_RESTART, 0x7fcc463fdd40}, 8) = 0
22200 tgkill(22200, 22200, SIGPIPE)     = 0   
22200 --- SIGPIPE {si_signo=SIGPIPE, si_code=SI_TKILL, si_pid=22200, si_uid=1000} ---
22200 +++ killed by SIGPIPE +++
22122 <... wait4 resumed> [{WIFSIGNALED(s) && WTERMSIG(s) == SIGPIPE}], 0, NULL) = 22200 
22122 --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=22200, si_status=SIGPIPE, si_utime=0, si_stime=0} ---

Looks like the index helper closes the socket, but git status still
wants to write to it. The index-helper also doesn't seem to read all
data from the socket.

-- 
Dennis Kaarsemaker
www.kaarsemaker.net

  parent reply	other threads:[~2016-05-10 17:28 UTC|newest]

Thread overview: 39+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-05-09 20:48 [PATCH v9 00/19] index-helper/watchman David Turner
2016-05-09 20:48 ` [PATCH v9 01/19] read-cache.c: fix constness of verify_hdr() David Turner
2016-05-09 20:48 ` [PATCH v9 02/19] read-cache: allow to keep mmap'd memory after reading David Turner
2016-05-09 20:48 ` [PATCH v9 03/19] index-helper: new daemon for caching index and related stuff David Turner
2016-05-10 10:13   ` SZEDER Gábor
2016-05-10 10:31     ` Duy Nguyen
2016-05-10 11:12       ` SZEDER Gábor
2016-05-10 11:31         ` Duy Nguyen
2016-05-10 17:19     ` David Turner
2016-05-09 20:48 ` [PATCH v9 04/19] index-helper: add --strict David Turner
2016-05-09 20:48 ` [PATCH v9 05/19] index-helper: log warnings David Turner
2016-05-09 20:48 ` [PATCH v9 06/19] daemonize(): set a flag before exiting the main process David Turner
2016-05-09 20:48 ` [PATCH v9 07/19] index-helper: add --detach David Turner
2016-05-09 20:48 ` [PATCH v9 08/19] read-cache: add watchman 'WAMA' extension David Turner
2016-05-09 20:48 ` [PATCH v9 09/19] watchman: support watchman to reduce index refresh cost David Turner
2016-05-09 20:48 ` [PATCH v9 10/19] index-helper: use watchman to avoid refreshing index with lstat() David Turner
2016-05-09 20:48 ` [PATCH v9 11/19] update-index: enable/disable watchman support David Turner
2016-05-09 20:48 ` [PATCH v9 12/19] unpack-trees: preserve index extensions David Turner
2016-05-09 20:48 ` [PATCH v9 13/19] watchman: add a config option to enable the extension David Turner
2016-05-09 20:48 ` [PATCH v9 14/19] index-helper: kill mode David Turner
2016-05-09 20:48 ` [PATCH v9 15/19] index-helper: don't run if already running David Turner
2016-05-09 20:48 ` [PATCH v9 16/19] index-helper: autorun mode David Turner
2016-05-09 20:48 ` [PATCH v9 17/19] index-helper: optionally automatically run David Turner
2016-05-09 20:48 ` [PATCH v9 18/19] trace: measure where the time is spent in the index-heavy operations David Turner
2016-05-09 20:48 ` [PATCH v9 19/19] untracked-cache: config option David Turner
2016-05-09 21:40 ` [PATCH v9 00/19] index-helper/watchman Junio C Hamano
2016-05-09 22:15   ` David Turner
2016-05-09 22:22     ` Junio C Hamano
2016-05-09 22:32       ` Junio C Hamano
2016-05-09 23:12         ` David Turner
2016-05-09 23:46           ` Ramsay Jones
2016-05-10 12:45           ` Duy Nguyen
2016-05-10 12:57             ` Duy Nguyen
2016-05-10 17:28         ` Dennis Kaarsemaker [this message]
2016-05-10 17:44           ` Dennis Kaarsemaker
2016-05-10 11:52       ` Dennis Kaarsemaker
2016-05-10 15:35         ` Ramsay Jones
2016-05-10 20:30           ` Junio C Hamano
2016-05-10 22:09             ` Ramsay Jones

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