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imsm: implement "--examine-badblocks" command 

Implement "--examine-badblocks" command to provide list of bad blocks in
metadata for a disk.

Signed-off-by: Tomasz Majchrzak <tomasz.majchrzak@intel.com>
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
This commit is contained in:
Tomasz Majchrzak 2016-11-29 14:02:34 +01:00 committed by Jes Sorensen
parent 928f142438
commit 27156a57dd
1 changed files with 56 additions and 0 deletions
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56
super-intel.c
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@ -9919,6 +9919,61 @@ static struct md_bb *imsm_get_badblocks(struct active_array *a, int slot)
return &super->bb;
}
/*******************************************************************************
* Function: examine_badblocks_imsm
* Description: Prints list of bad blocks on a disk to the standard output
*
* Parameters:
* st : metadata handler
* fd : open file descriptor for device
* devname : device name
* Returns:
* 0 : Success
* 1 : Error
******************************************************************************/
static int examine_badblocks_imsm(struct supertype *st, int fd, char *devname)
{
struct intel_super *super = st->sb;
struct bbm_log *log = super->bbm_log;
struct dl *d = NULL;
int any = 0;
for (d = super->disks; d ; d = d->next) {
if (strcmp(d->devname, devname) == 0)
break;
}
if ((d == NULL) || (d->index < 0)) { /* serial mismatch probably */
pr_err("%s doesn't appear to be part of a raid array\n",
devname);
return 1;
}
if (log != NULL) {
unsigned int i;
struct bbm_log_entry *entry = &log->marked_block_entries[0];
for (i = 0; i < log->entry_count; i++) {
if (entry[i].disk_ordinal == d->index) {
unsigned long long sector = __le48_to_cpu(
&entry[i].defective_block_start);
int cnt = entry[i].marked_count + 1;
if (!any) {
printf("Bad-blocks on %s:\n", devname);
any = 1;
}
printf("%20llu for %d sectors\n", sector, cnt);
}
}
}
if (!any)
printf("No bad-blocks list configured on %s\n", devname);
return 0;
}
/*******************************************************************************
* Function: init_migr_record_imsm
* Description: Function inits imsm migration record
@ -11440,6 +11495,7 @@ struct superswitch super_imsm = {
.manage_reshape = imsm_manage_reshape,
.recover_backup = recover_backup_imsm,
.copy_metadata = copy_metadata_imsm,
.examine_badblocks = examine_badblocks_imsm,
#endif
.match_home = match_home_imsm,
.uuid_from_super= uuid_from_super_imsm,