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bcacheadm: set disk-failed command

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Given a cacheset uuid and a device uuid, set that devices
member_info to CACHE_FAILED.

Change-Id: Ideb2034b1deb5fd11efda67f85b82d8a49fe71e4
Signed-off-by: Jacob Malevich <jam@daterainc.com>
This commit is contained in:
Jacob Malevich 2015-01-12 16:41:28 -08:00
parent 4304193d31
commit 47013b3d06
3 changed files with 69 additions and 1 deletions
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30
bcache.c
View File

@ -1236,6 +1236,36 @@ err:
return err;
}
char *device_set_failed(const char *dev_uuid, const char *set_uuid) {
int ret, bcachefd;
char *err = NULL;
uuid_le dev, set;
struct bch_ioctl_disk_failed df;
bcachefd = open("/dev/bcache", O_RDWR);
if (bcachefd < 0) {
err = "Can't open bcache device";
goto err;
}
uuid_parse(dev_uuid, dev.b);
uuid_parse(set_uuid, set.b);
df.dev_uuid = dev;
df.set_uuid = set;
ret = ioctl(bcachefd, BCH_IOCTL_SET_DISK_FAILED, &df);
if (ret < 0) {
char tmp[128];
snprintf(tmp, 128, "ioctl set disk failed error %s\n",
strerror(ret));
err = strdup(tmp);
}
err:
close(bcachefd);
return err;
}
char *probe(char *dev, int udev)
{
struct cache_sb sb;

2
bcache.h
View File

@ -110,7 +110,7 @@ char *add_devices(char *const *, char *);
char *remove_device(const char *, bool);
char *bcache_get_capacity(const char *, const char *, bool);
char *dev_name(const char *);
char *device_set_failed(const char *dev_uuid, const char *set_uuid);
#define csum_set(i, type) \
({ \

38
bcacheadm.c
View File

@ -99,6 +99,10 @@ bool stats_hour = false;
bool stats_day = false;
bool stats_total = false;
/* set_failed globals */
static const char *failed_uuid = NULL;
static const char *dev_failed_uuid = NULL;
/* make-bcache option setters */
static int set_block_size(NihOption *option, const char *arg)
{
@ -254,6 +258,12 @@ static NihOption stats_options[] = {
NIH_OPTION_LAST
};
static NihOption set_failed_options[] = {
{'u', "set", N_("cache_set UUID"), NULL, "UUID", &failed_uuid, NULL},
{'d', "dev", N_("dev UUID"), NULL, "UUID", &dev_failed_uuid, NULL},
NIH_OPTION_LAST
};
static NihOption options[] = {
NIH_OPTION_LAST
};
@ -784,6 +794,30 @@ err:
return -1;
}
int bcache_set_failed(NihCommand *command, char *const *args)
{
int i;
char *err = NULL;
if (!failed_uuid) {
printf("Pass in a cacheset uuid\n");
return -1;
}
if (!dev_failed_uuid) {
printf("Pass in a dev uuid\n");
return -1;
}
err = device_set_failed(dev_failed_uuid, failed_uuid);
if (err) {
printf("bcache_set_failed_ioctl error: %s\n", err);
return -1;
}
return 0;
}
static NihCommand commands[] = {
{"format", N_("format <list of drives>"),
"Format one or a list of devices with bcache datastructures."
@ -834,6 +868,10 @@ static NihCommand commands[] = {
"List various bcache statistics",
N_("List various bcache statistics"),
NULL, stats_options, bcache_stats},
{"set-failed", N_("set-failed --set=UUID --dev=UUID"),
"Sets a device to the FAILED state",
N_("Sets a device to the FAILED state"),
NULL, set_failed_options, bcache_set_failed},
NIH_COMMAND_LAST
};