/*
* replica_check_poolset_health -- check if a given poolset can be considered as
* healthy, and store the status in a helping structure
*/
int
replica_check_poolset_health(struct pool_set *set,
struct poolset_health_status **set_hsp, unsigned flags)
{
if (replica_create_poolset_health_status(set, set_hsp)) {
LOG(1, "Creating poolset health status failed");
return -1;
}
struct poolset_health_status *set_hs = *set_hsp;
/* check if part files exist, and if not - create them, and open them */
check_and_open_poolset_part_files(set, set_hs, flags);
/* map all headers */
map_all_unbroken_headers(set, set_hs);
/* check if checksums are correct for parts in all replicas */
check_checksums(set, set_hs);
/* check if uuids in parts across each replica are consistent */
if (check_replicas_consistency(set, set_hs)) {
LOG(1, "Replica consistency check failed");
goto err;
}
/* check poolset_uuid values between replicas */
if (check_poolset_uuids(set, set_hs)) {
LOG(1, "Poolset uuids check failed");
goto err;
}
/* check if uuids for adjacent replicas are consistent */
if (check_uuids_between_replicas(set, set_hs)) {
LOG(1, "Replica uuids check failed");
goto err;
}
if (check_store_all_sizes(set, set_hs)) {
LOG(1, "Reading pool sizes failed");
goto err;
}
unmap_all_headers(set);
util_poolset_fdclose(set);
return 0;
err:
unmap_all_headers(set);
util_poolset_fdclose(set);
replica_free_poolset_health_status(set_hs);
return -1;
}
/**
* __toi_post_context_save - steps after saving the cpu context
*
* Steps taken after saving the CPU state to make the actual
* atomic copy.
*
* Called from swsusp_save in snapshot.c via toi_post_context_save.
**/
int __toi_post_context_save(void)
{
unsigned long old_ps1_size = pagedir1.size;
check_checksums();
free_checksum_pages();
toi_recalculate_image_contents(1);
extra_pd1_pages_used = pagedir1.size > old_ps1_size ?
pagedir1.size - old_ps1_size : 0;
if (extra_pd1_pages_used > extra_pd1_pages_allowance) {
printk(KERN_INFO "Pageset1 has grown by %lu pages. "
"extra_pages_allowance is currently only %lu.\n",
pagedir1.size - old_ps1_size,
extra_pd1_pages_allowance);
/*
* Highlevel code will see this, clear the state and
* retry if we haven't already done so twice.
*/
if (any_to_free(1)) {
set_abort_result(TOI_EXTRA_PAGES_ALLOW_TOO_SMALL);
return 1;
}
if (try_allocate_extra_memory()) {
printk(KERN_INFO "Failed to allocate the extra memory"
" needed. Restarting the process.");
set_abort_result(TOI_EXTRA_PAGES_ALLOW_TOO_SMALL);
return 1;
}
printk(KERN_INFO "However it looks like there's enough"
" free ram and storage to handle this, so "
" continuing anyway.");
/*
* What if try_allocate_extra_memory above calls
* toi_allocate_extra_pagedir_memory and it allocs a new
* slab page via toi_kzalloc which should be in ps1? So...
*/
toi_recalculate_image_contents(1);
}
if (!test_action_state(TOI_TEST_FILTER_SPEED) &&
!test_action_state(TOI_TEST_BIO))
toi_copy_pageset1();
return 0;
}
/*
* replica_check_poolset_health -- check if a given poolset can be considered as
* healthy, and store the status in a helping structure
*/
int
replica_check_poolset_health(struct pool_set *set,
struct poolset_health_status **set_hsp, unsigned flags)
{
LOG(3, "set %p, set_hsp %p, flags %u", set, set_hsp, flags);
if (replica_create_poolset_health_status(set, set_hsp)) {
LOG(1, "creating poolset health status failed");
return -1;
}
struct poolset_health_status *set_hs = *set_hsp;
/* check if part files exist, and if not - create them, and open them */
check_and_open_poolset_part_files(set, set_hs, flags);
/* map all headers */
map_all_unbroken_headers(set, set_hs);
/* check if checksums are correct for parts in all replicas */
check_checksums(set, set_hs);
/* check if option flags are consistent */
if (check_options(set, set_hs)) {
LOG(1, "flags check failed");
goto err;
}
if (check_shutdown_state(set, set_hs)) {
LOG(1, "replica shutdown_state check failed");
goto err;
}
/* check if uuids in parts across each replica are consistent */
if (check_replicas_consistency(set, set_hs)) {
LOG(1, "replica consistency check failed");
goto err;
}
/* check poolset_uuid values between replicas */
if (check_poolset_uuids(set, set_hs)) {
LOG(1, "poolset uuids check failed");
goto err;
}
/* check if uuids for adjacent replicas are consistent */
if (check_uuids_between_replicas(set, set_hs)) {
LOG(1, "replica uuids check failed");
goto err;
}
/* check if healthy replicas make up another poolset */
if (check_replica_cycles(set, set_hs)) {
LOG(1, "replica cycles check failed");
goto err;
}
/* check if replicas are large enough */
if (check_replica_sizes(set, set_hs)) {
LOG(1, "replica sizes check failed");
goto err;
}
if (check_store_all_sizes(set, set_hs)) {
LOG(1, "reading pool sizes failed");
goto err;
}
unmap_all_headers(set);
util_poolset_fdclose_always(set);
return 0;
err:
errno = EINVAL;
unmap_all_headers(set);
util_poolset_fdclose_always(set);
replica_free_poolset_health_status(set_hs);
return -1;
}