Gitweb: http://git.fedorahosted.org/git/?p=lvm2.git;a=commitdiff;h=983f0b46f2de85b8d... Commit: 983f0b46f2de85b8de0e2d7f8afbdf53f132a87a Parent: 7c59199d4932d7edcd2919d6d45ec4baac590e2e Author: Petr Rockai prockai@redhat.com AuthorDate: Mon Oct 29 21:39:46 2012 +0100 Committer: Petr Rockai prockai@redhat.com CommitterDate: Tue Oct 30 09:15:47 2012 +0100

lvmetad: Init lazily, to avoid socket access on config overrides.

--- lib/cache/lvmetad.c | 28 ++++++++++++++++++++++------ 1 files changed, 22 insertions(+), 6 deletions(-)

diff --git a/lib/cache/lvmetad.c b/lib/cache/lvmetad.c index 6a374ac..72e07fd 100644 --- a/lib/cache/lvmetad.c +++ b/lib/cache/lvmetad.c @@ -33,7 +33,8 @@ static struct cmd_context *_lvmetad_cmd = NULL;

void lvmetad_disconnect(void) { - daemon_close(_lvmetad); + if (_lvmetad_connected) + daemon_close(_lvmetad); _lvmetad_connected = 0; _lvmetad_cmd = NULL; } @@ -41,19 +42,25 @@ void lvmetad_disconnect(void) void lvmetad_init(struct cmd_context *cmd) { if (!_lvmetad_use && !access(LVMETAD_PIDFILE, F_OK)) - log_warn("WARNING: lvmetad is running but disabled. Restart lvmetad before enabling it!"); + log_warn("WARNING: lvmetad is running but disabled." + " Restart lvmetad before enabling it!"); + _lvmetad_cmd = cmd; +} + +static void _lvmetad_connect() +{ if (_lvmetad_use && _lvmetad_socket && !_lvmetad_connected) { assert(_lvmetad_socket); _lvmetad = lvmetad_open(_lvmetad_socket); - if (_lvmetad.socket_fd >= 0 && !_lvmetad.error) { + if (_lvmetad.socket_fd >= 0 && !_lvmetad.error) _lvmetad_connected = 1; - _lvmetad_cmd = cmd; - } } }

void lvmetad_warning(void) { + if (!_lvmetad_connected) + _lvmetad_connect(); if (_lvmetad_use && (_lvmetad.socket_fd < 0 || _lvmetad.error)) log_warn("WARNING: Failed to connect to lvmetad: %s. Falling back to internal scanning.", strerror(_lvmetad.error)); @@ -61,7 +68,11 @@ void lvmetad_warning(void)

int lvmetad_active(void) { - return _lvmetad_use && _lvmetad_connected; + if (!_lvmetad_use) + return 0; + if (!_lvmetad_connected) + _lvmetad_connect(); + return _lvmetad_connected; }

void lvmetad_set_active(int active) @@ -873,6 +884,11 @@ int lvmetad_pvscan_all_devs(struct cmd_context *cmd, activation_handler handler) char *future_token; int was_silent;

+ if (!lvmetad_active()) { + log_error("Cannot proceed since lvmetad is not active."); + return 0; + } + if (!(iter = dev_iter_create(cmd->lvmetad_filter, 1))) { log_error("dev_iter creation failed"); return 0;