mirrors/scoutfs
1
0
Fork 0
mirror of https://github.com/versity/scoutfs.git synced 2026-09-21 07:24:27 +00:00
Code Issues Packages Projects Releases Wiki Activity

scoutfs: start and stop server with quorum

Browse Source 
Currently all mounts try to get a dlm lock which gives them exclusive
access to become the server for the filesystem.  That isn't going to
work if we're moving to locking provided by the server.

This uses quorum election to determine who should run the server.  We
switch from long running server work blocked trying to get a lock to
calls which start and stop the server.

Signed-off-by: Zach Brown <zab@versity.com>
This commit is contained in:
Zach Brown
2019-04-12 10:54:07 -07:00
parent 08a140c8b0
commit 288d781645
6 changed files with 158 additions and 173 deletions
Download Patch File Download Diff File Expand all files Collapse all files
kmod/src/options.c
-21
View File
@@ -27,8 +27,6 @@
#include "super.h"
static const match_table_t tokens = {
{Opt_listen, "listen=%s"},
{Opt_cluster, "cluster=%s"},
{Opt_uniq_name, "uniq_name=%s"},
{Opt_err, NULL}
};
@@ -55,15 +53,12 @@ u32 scoutfs_option_u32(struct super_block *sb, int token)
int scoutfs_parse_options(struct super_block *sb, char *options,
struct mount_options *parsed)
{
char ipstr[INET_ADDRSTRLEN + 1];
substring_t args[MAX_OPT_ARGS];
int token, len;
__be32 addr;
char *p;
/* Set defaults */
memset(parsed, 0, sizeof(*parsed));
strcpy(parsed->cluster_name, "scoutfs");
while ((p = strsep(&options, ",")) != NULL) {
if (!*p)
@@ -71,22 +66,6 @@ int scoutfs_parse_options(struct super_block *sb, char *options,
token = match_token(p, tokens, args);
switch (token) {
case Opt_listen:
match_strlcpy(ipstr, args, ARRAY_SIZE(ipstr));
addr = in_aton(ipstr);
if (ipv4_is_multicast(addr) || ipv4_is_lbcast(addr) ||
ipv4_is_zeronet(addr) || ipv4_is_local_multicast(addr))
return -EINVAL;
parsed->listen_addr.addr =
cpu_to_le32(be32_to_cpu(addr));
break;
case Opt_cluster:
len = args[0].to - args[0].from;
if (len == 0 || len > (MAX_CLUSTER_NAME_LEN - 1))
return -EINVAL;
match_strlcpy(parsed->cluster_name, args,
MAX_CLUSTER_NAME_LEN);
break;
case Opt_uniq_name:
len = match_strlcpy(parsed->uniq_name, args,
SCOUTFS_UNIQUE_NAME_MAX_BYTES);