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Validate that the total disk buffer memory does not exceed 256 MiB

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Andrea Mazzoleni 2026-08-26 20:59:56 +02:00
parent 65e1eac061
commit 33d96adbce
1 changed files with 12 additions and 0 deletions
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12
cmdline/state.c
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@ -224,6 +224,18 @@ static void state_config_check(struct snapraid_state* state, const char* path, t
{
tommy_node* i;
unsigned l, s;
size_t disk_count;
/* check total memory budget for block buffers (max 256 MiB) */
disk_count = tommy_list_count(&state->disklist) + state->level;
if (disk_count > (256 * 1024) / (state->block_size / KIBI)) {
/* LCOV_EXCL_START */
log_fatal(EUSER, "The combination of %zu disks and %u KiB 'blocksize' in '%s' exceeds the 256 MiB limit.\n",
disk_count, state->block_size / KIBI, path);
log_fatal(EUSER, "Please reduce the 'blocksize' or the number of disks.\n");
exit(EXIT_FAILURE);
/* LCOV_EXCL_STOP */
}
/* check for parity level */
if (state->raid_mode == RAID_MODE_VANDERMONDE_RAID) {