94 lines
3.6 KiB
Diff
94 lines
3.6 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
|
|
From: Wolfgang Bumiller <w.bumiller@proxmox.com>
|
|
Date: Thu, 22 Mar 2018 15:32:04 +0100
|
|
Subject: [PATCH] PVE: vma: add cache option to device map
|
|
|
|
Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
|
|
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
|
|
---
|
|
vma.c | 16 +++++++++++++++-
|
|
1 file changed, 15 insertions(+), 1 deletion(-)
|
|
|
|
diff --git a/vma.c b/vma.c
|
|
index f9f5c308fe..476b7bee00 100644
|
|
--- a/vma.c
|
|
+++ b/vma.c
|
|
@@ -135,6 +135,7 @@ typedef struct RestoreMap {
|
|
char *format;
|
|
uint64_t throttling_bps;
|
|
char *throttling_group;
|
|
+ char *cache;
|
|
bool write_zero;
|
|
} RestoreMap;
|
|
|
|
@@ -242,6 +243,7 @@ static int extract_content(int argc, char **argv)
|
|
char *format = NULL;
|
|
char *bps = NULL;
|
|
char *group = NULL;
|
|
+ char *cache = NULL;
|
|
if (!line || line[0] == '\0' || !strcmp(line, "done\n")) {
|
|
break;
|
|
}
|
|
@@ -256,7 +258,8 @@ static int extract_content(int argc, char **argv)
|
|
while (1) {
|
|
if (!try_parse_option(&line, "format", &format, inbuf) &&
|
|
!try_parse_option(&line, "throttling.bps", &bps, inbuf) &&
|
|
- !try_parse_option(&line, "throttling.group", &group, inbuf))
|
|
+ !try_parse_option(&line, "throttling.group", &group, inbuf) &&
|
|
+ !try_parse_option(&line, "cache", &cache, inbuf))
|
|
{
|
|
break;
|
|
}
|
|
@@ -293,6 +296,7 @@ static int extract_content(int argc, char **argv)
|
|
map->format = format;
|
|
map->throttling_bps = bps_value;
|
|
map->throttling_group = group;
|
|
+ map->cache = cache;
|
|
map->write_zero = write_zero;
|
|
|
|
g_hash_table_insert(devmap, map->devname, map);
|
|
@@ -322,6 +326,7 @@ static int extract_content(int argc, char **argv)
|
|
const char *format = NULL;
|
|
uint64_t throttling_bps = 0;
|
|
const char *throttling_group = NULL;
|
|
+ const char *cache = NULL;
|
|
int flags = BDRV_O_RDWR | BDRV_O_NO_FLUSH;
|
|
bool write_zero = true;
|
|
|
|
@@ -335,6 +340,7 @@ static int extract_content(int argc, char **argv)
|
|
format = map->format;
|
|
throttling_bps = map->throttling_bps;
|
|
throttling_group = map->throttling_group;
|
|
+ cache = map->cache;
|
|
write_zero = map->write_zero;
|
|
} else {
|
|
devfn = g_strdup_printf("%s/tmp-disk-%s.raw",
|
|
@@ -356,6 +362,7 @@ static int extract_content(int argc, char **argv)
|
|
|
|
size_t devlen = strlen(devfn);
|
|
QDict *options = NULL;
|
|
+ bool writethrough;
|
|
if (format) {
|
|
/* explicit format from commandline */
|
|
options = qdict_new();
|
|
@@ -370,12 +377,19 @@ static int extract_content(int argc, char **argv)
|
|
options = qdict_new();
|
|
qdict_put_str(options, "driver", "raw");
|
|
}
|
|
+ if (cache && bdrv_parse_cache_mode(cache, &flags, &writethrough)) {
|
|
+ g_error("invalid cache option: %s\n", cache);
|
|
+ }
|
|
|
|
if (errp || !(blk = blk_new_open(devfn, NULL, options, flags, &errp))) {
|
|
g_error("can't open file %s - %s", devfn,
|
|
error_get_pretty(errp));
|
|
}
|
|
|
|
+ if (cache) {
|
|
+ blk_set_enable_write_cache(blk, !writethrough);
|
|
+ }
|
|
+
|
|
if (throttling_group) {
|
|
blk_io_limits_enable(blk, throttling_group);
|
|
}
|