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lvm: use configure proc dir in lvm.conf

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Update some code parts to use configurer /proc from lvm.conf
(so i.e. our testing can use some fake values)
This commit is contained in:
Zdenek Kabelac 2024-04-15 00:31:30 +02:00
parent 84b084c9b6
commit ecb8399005
3 changed files with 20 additions and 6 deletions
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5
lib/metadata/thin_manip.c
View File

@ -459,7 +459,7 @@ int thin_pool_prepare_metadata(struct logical_volume *metadata_lv,
uint64_t data_length)
{
struct cmd_context *cmd = metadata_lv->vg->cmd;
char lv_path[PATH_MAX], md_path[64], buffer[512];
char lv_path[PATH_MAX], md_path[PATH_MAX], buffer[512];
const char *argv[DEFAULT_MAX_EXEC_ARGS + 7] = {
find_config_tree_str_allow_empty(cmd, global_thin_restore_executable_CFG, NULL)
};
@ -490,7 +490,8 @@ int thin_pool_prepare_metadata(struct logical_volume *metadata_lv,
}
/* Build path for 'thin_restore' app with this 'hidden/deleted' tmpfile */
(void) dm_snprintf(md_path, sizeof(md_path), "/proc/%u/fd/%u", getpid(), fileno(f));
(void) dm_snprintf(md_path, sizeof(md_path), "%s/%u/fd/%u",
cmd->proc_dir, getpid(), fileno(f));
argv[++args] = "-i";
argv[++args] = md_path;

9
lib/metadata/vdo_manip.c
View File

@ -653,7 +653,7 @@ static int _compare_mem_table_s(const void *a, const void *b){
return strcmp(((const mem_table_t*)a)->name, ((const mem_table_t*)b)->name);
}
static int _get_memory_info(uint64_t *total_mb, uint64_t *available_mb)
static int _get_memory_info(struct cmd_context *cmd, uint64_t *total_mb, uint64_t *available_mb)
{
uint64_t anon_pages = 0, mem_available = 0, mem_free = 0, mem_total = 0, shmem = 0, swap_free = 0;
uint64_t can_swap;
@ -667,11 +667,14 @@ static int _get_memory_info(uint64_t *total_mb, uint64_t *available_mb)
};
char line[128], namebuf[32], *e, *tail;
char proc_meminfo[PATH_MAX];
FILE *fp;
mem_table_t findme = { namebuf, NULL };
mem_table_t *found;
if (!(fp = fopen("/proc/meminfo", "r")))
if ((dm_snprintf(proc_meminfo, sizeof(proc_meminfo),
"%s/meminfo", cmd->proc_dir) < 0) ||
!(fp = fopen(proc_meminfo, "r")))
return _get_sysinfo_memory(total_mb, available_mb);
while (fgets(line, sizeof(line), fp)) {
@ -760,7 +763,7 @@ int check_vdo_constrains(struct cmd_context *cmd, const struct vdo_pool_size_con
// total required memory for VDO target
req_mb = 38 + cfg->index_memory_size_mb + virt_mb + phy_mb + cache_mb;
_get_memory_info(&total_mb, &available_mb);
_get_memory_info(cmd, &total_mb, &available_mb);
has_cnt = cnt = (phy_mb ? 1 : 0) +
(virt_mb ? 1 : 0) +

12
tools/lvconvert.c
View File

@ -6139,8 +6139,18 @@ static int _check_writecache_memory(struct cmd_context *cmd, struct logical_volu
uint64_t need_mem_gb;
uint64_t proc_mem_gb;
unsigned long long proc_mem_kb = 0;
char proc_meminfo[PATH_MAX];
if (!(fp = fopen("/proc/meminfo", "r")))
if (*cmd->proc_dir)
goto skip_proc;
if (dm_snprintf(proc_meminfo, sizeof(proc_meminfo),
"%s/meminfo", cmd->proc_dir) < 0) {
stack;
goto skip_proc;
}
if (!(fp = fopen(proc_meminfo, "r")))
goto skip_proc;
while (fgets(line, sizeof(line), fp)) {