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Move orphan lock obtain/release inside vg_extend().

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With this change we now have vgcreate/vgextend liblvm functions.
Note that this changes the lock order of the following functions as the
orphan lock is now obtained first.  With our policy of non-blocking
second locks, this should not be a problem.

Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
This commit is contained in:
Dave Wysochanski 2009-07-10 20:09:21 +00:00
parent 03660b3045
commit 7fa91ec044
3 changed files with 9 additions and 17 deletions
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9
lib/metadata/metadata.c
View File

@ -437,6 +437,12 @@ int vg_extend(struct volume_group *vg, int pv_count, char **pv_names)
{
int i;
struct physical_volume *pv;
struct cmd_context *cmd = vg->cmd;
if (!lock_vol(cmd, VG_ORPHANS, LCK_VG_WRITE)) {
log_error("Can't get lock for orphan PVs");
return 0;
}
/* attach each pv */
for (i = 0; i < pv_count; i++) {
@ -445,18 +451,19 @@ int vg_extend(struct volume_group *vg, int pv_count, char **pv_names)
"physical volume", pv_names[i]);
goto bad;
}
if (!add_pv_to_vg(vg, pv_names[i], pv))
goto bad;
}
/* FIXME Decide whether to initialise and add new mdahs to format instance */
unlock_vg(cmd, VG_ORPHANS);
return 1;
bad:
log_error("Unable to add physical volume '%s' to "
"volume group '%s'.", pv_names[i], vg->name);
unlock_vg(cmd, VG_ORPHANS);
return 0;
}

8
tools/vgcreate.c
View File

@ -46,12 +46,6 @@ int vgcreate(struct cmd_context *cmd, int argc, char **argv)
if (validate_vg_create_params(cmd, &vp_new))
return EINVALID_CMD_LINE;
/* FIXME: orphan lock needs tied to vg handle or inside library call */
if (!lock_vol(cmd, VG_ORPHANS, LCK_VG_WRITE)) {
log_error("Can't get lock for orphan PVs");
return ECMD_FAILED;
}
/* Create the new VG */
vg = vg_create(cmd, vp_new.vg_name);
if (vg_read_error(vg))
@ -113,7 +107,6 @@ int vgcreate(struct cmd_context *cmd, int argc, char **argv)
}
unlock_vg(cmd, vp_new.vg_name);
unlock_vg(cmd, VG_ORPHANS);
backup(vg);
@ -126,6 +119,5 @@ int vgcreate(struct cmd_context *cmd, int argc, char **argv)
bad:
vg_release(vg);
unlock_vg(cmd, vp_new.vg_name);
unlock_vg(cmd, VG_ORPHANS);
return ECMD_FAILED;
}

7
tools/vgextend.c
View File

@ -36,17 +36,11 @@ int vgextend(struct cmd_context *cmd, int argc, char **argv)
argc--;
argv++;
if (!lock_vol(cmd, VG_ORPHANS, LCK_VG_WRITE)) {
log_error("Can't get lock for orphan PVs");
return ECMD_FAILED;
}
log_verbose("Checking for volume group \"%s\"", vg_name);
vg = vg_read_for_update(cmd, vg_name, NULL,
READ_REQUIRE_RESIZEABLE);
if (vg_read_error(vg)) {
vg_release(vg);
unlock_vg(cmd, VG_ORPHANS);
return ECMD_FAILED;
}
/********** FIXME
@ -77,6 +71,5 @@ int vgextend(struct cmd_context *cmd, int argc, char **argv)
error:
unlock_and_release_vg(cmd, vg, vg_name);
unlock_vg(cmd, VG_ORPHANS);
return r;
}