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Remove unneeded LOCK_NONBLOCKING from vg_read() API.

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Remove unneeded LOCK_NONBLOCKING from vg_read() API and tools that
use it.  We no longer need this flag anywhere since we now automatically
set LCK_NONBLOCK inside lock_vol() if vgs_locked().
For further details, see:
commit d52b3fd3fe
Author: Dave Wysochanski <dwysocha@redhat.com>
Date:   Wed May 13 13:02:52 2009 +0000

    Remove NON_BLOCKING lock flag from tools and set a policy to auto-set.

    As a simplification to the tools and further liblvm, this patch pushes
    the setting of NON_BLOCKING lock flag inside the lock_vol() call.
    The policy we set is if any existing VGs are currently locked, we
    set the NON_BLOCKING flag.

At some point it may make sense to add this flag back if we get an
RFE from a liblvm user, but for now let's keep it as simple as
possible.

Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
This commit is contained in:
Dave Wysochanski 2009-07-08 14:33:17 +00:00
parent b251e09035
commit 4c35d6dee6
7 changed files with 5 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
lib/metadata/metadata-exported.h
View File

@ -110,9 +110,6 @@ struct pv_segment;
#define READ_ALLOW_EXPORTED 0x00020000U
#define READ_REQUIRE_RESIZEABLE 0x00040000U
/* FIXME Deduce these next requirements internally instead of having caller specify. */
#define LOCK_NONBLOCKING 0x00000100U /* Fail if not available immediately. */
/* A meta-flag, useful with toollib for_each_* functions. */
#define READ_FOR_UPDATE 0x00100000U

3
lib/metadata/metadata.c
View File

@ -2845,9 +2845,6 @@ vg_t *vg_read(struct cmd_context *cmd, const char *vg_name,
if (flags & READ_REQUIRE_RESIZEABLE)
status |= RESIZEABLE_VG;
if (flags & LOCK_NONBLOCKING)
lock_flags |= LCK_NONBLOCK;
return _vg_lock_and_read(cmd, vg_name, vgid, lock_flags, status, flags);
}

2
tools/vgextend.c
View File

@ -43,7 +43,7 @@ int vgextend(struct cmd_context *cmd, int argc, char **argv)
log_verbose("Checking for volume group \"%s\"", vg_name);
vg = vg_read_for_update(cmd, vg_name, NULL,
READ_REQUIRE_RESIZEABLE | LOCK_NONBLOCKING);
READ_REQUIRE_RESIZEABLE);
if (vg_read_error(vg)) {
vg_release(vg);
unlock_vg(cmd, VG_ORPHANS);

3
tools/vgmerge.c
View File

@ -35,8 +35,7 @@ static int _vgmerge_single(struct cmd_context *cmd, const char *vg_name_to,
}
log_verbose("Checking for volume group \"%s\"", vg_name_from);
vg_from = vg_read_for_update(cmd, vg_name_from, NULL,
LOCK_NONBLOCKING);
vg_from = vg_read_for_update(cmd, vg_name_from, NULL, 0);
if (vg_read_error(vg_from)) {
vg_release(vg_from);
unlock_and_release_vg(cmd, vg_to, vg_name_to);

2
tools/vgreduce.c
View File

@ -424,7 +424,7 @@ static int _vgreduce_single(struct cmd_context *cmd, struct volume_group *vg,
vg->extent_count -= pv_pe_count(pv);
orphan_vg = vg_read_for_update(cmd, vg->fid->fmt->orphan_vg_name,
NULL, LOCK_NONBLOCKING);
NULL, 0);
if (vg_read_error(orphan_vg))
goto bad;

2
tools/vgremove.c
View File

@ -41,7 +41,7 @@ int vgremove(struct cmd_context *cmd, int argc, char **argv)
}
ret = process_each_vg(cmd, argc, argv,
READ_FOR_UPDATE | LOCK_NONBLOCKING,
READ_FOR_UPDATE,
NULL, &vgremove_single);
unlock_vg(cmd, VG_ORPHANS);

3
tools/vgsplit.c
View File

@ -341,8 +341,7 @@ int vgsplit(struct cmd_context *cmd, int argc, char **argv)
if (rc == FAILED_EXIST) {
existing_vg = 1;
vg_to = vg_read_for_update(cmd, vg_name_to, NULL,
READ_REQUIRE_RESIZEABLE |
LOCK_NONBLOCKING);
READ_REQUIRE_RESIZEABLE);
if (vg_read_error(vg_to)) {
vg_release(vg_to);