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Adds an extra check for the too may disks condition.

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This commit is contained in:
Andrea Mazzoleni 2012-03-13 21:24:34 +01:00
parent 0c553a3641
commit a2b41f23be
1 changed files with 9 additions and 0 deletions
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9
state.c
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@ -117,6 +117,7 @@ static void state_config_check(struct snapraid_state* state, const char* path, i
/* check if all the data and parity disks are different */
if (!skip_device) {
unsigned diskcount = 0;
for(i=state->disklist;i!=0;i=i->next) {
tommy_node* j;
struct snapraid_disk* disk = i->data;
@ -138,6 +139,14 @@ static void state_config_check(struct snapraid_state* state, const char* path, i
fprintf(stderr, "Disk '%s' and parity '%s' are on the same device.\n", disk->dir, state->qarity);
exit(EXIT_FAILURE);
}
++diskcount;
}
if (diskcount > 255) {
/* RAID6 P/Q parity works for up to 255 drives, no more */
fprintf(stderr, "Too many disks. No more than 255.\n");
exit(EXIT_FAILURE);
}
if (state->qarity[0] != 0 && state->parity_device == state->qarity_device) {