mirror of
git://sourceware.org/git/lvm2.git
synced 2024-12-30 17:18:21 +03:00
pvs_online: include devname in pvid files
Include the device name in the /run/lvm/pvs_online/pvid files. Commands using the pvid file can use the devname to more quickly find the correct device, vs finding the device using the major:minor number. If the devname in the pvid file is missing or incorrect, fall back to using the devno.
This commit is contained in:
David Teigland
parent
024ce50f06
commit
73b4602f21
@ -2241,3 +2241,53 @@ int setup_devno_in_dev_cache(struct cmd_context *cmd, dev_t devno)
|
||||
return setup_devname_in_dev_cache(cmd, devname);
|
||||
}
|
||||
|
||||
struct device *setup_dev_in_dev_cache(struct cmd_context *cmd, dev_t devno, const char *devname)
|
||||
{
|
||||
struct device *dev;
|
||||
struct stat buf;
|
||||
int major = (int)MAJOR(devno);
|
||||
int minor = (int)MINOR(devno);
|
||||
|
||||
if (devname) {
|
||||
if (stat(devname, &buf) < 0) {
|
||||
log_error("Cannot access device %s for %d:%d.", devname, major, minor);
|
||||
if (!(devname = _get_devname_from_devno(cmd, devno))) {
|
||||
log_error("No device name found from %d:%d.", major, minor);
|
||||
return_NULL;
|
||||
}
|
||||
if (stat(devname, &buf) < 0) {
|
||||
log_error("Cannot access device %s from %d:%d.", devname, major, minor);
|
||||
return_NULL;
|
||||
}
|
||||
}
|
||||
} else {
|
||||
if (!(devname = _get_devname_from_devno(cmd, devno))) {
|
||||
log_error("No device name found from %d:%d.", major, minor);
|
||||
return_NULL;
|
||||
}
|
||||
if (stat(devname, &buf) < 0) {
|
||||
log_error("Cannot access device %s from %d:%d.", devname, major, minor);
|
||||
return_NULL;
|
||||
}
|
||||
}
|
||||
|
||||
if (!S_ISBLK(buf.st_mode)) {
|
||||
log_error("Invaild device type %s.", devname);
|
||||
return_NULL;
|
||||
}
|
||||
|
||||
if (devno && (buf.st_rdev != devno)) {
|
||||
log_warn("Found %s devno %d:%d expected %d:%d.", devname,
|
||||
(int)MAJOR(buf.st_rdev), (int)MINOR(buf.st_rdev), major, minor);
|
||||
}
|
||||
|
||||
if (!_insert_dev(devname, buf.st_rdev))
|
||||
return_NULL;
|
||||
|
||||
if (!(dev = (struct device *) dm_hash_lookup(_cache.names, devname))) {
|
||||
log_error("Device lookup failed for %d:%d %s", major, minor, devname);
|
||||
return_NULL;
|
||||
}
|
||||
|
||||
return dev;
|
||||
}
|
||||
|
||||
@ -82,5 +82,6 @@ int setup_device(struct cmd_context *cmd, const char *devname);
|
||||
int setup_devices_for_online_autoactivation(struct cmd_context *cmd);
|
||||
int setup_devname_in_dev_cache(struct cmd_context *cmd, const char *devname);
|
||||
int setup_devno_in_dev_cache(struct cmd_context *cmd, dev_t devno);
|
||||
struct device *setup_dev_in_dev_cache(struct cmd_context *cmd, dev_t devno, const char *devname);
|
||||
|
||||
#endif
|
||||
|
||||
@ -21,35 +21,50 @@
|
||||
|
||||
#include <dirent.h>
|
||||
|
||||
static char *_vgname_in_pvid_file_buf(char *buf)
|
||||
/*
|
||||
* file contains:
|
||||
* <major>:<minor>\n
|
||||
* vg:<vgname>\n
|
||||
* dev:<devname>\n\0
|
||||
*
|
||||
* It's possible that vg and dev may not exist.
|
||||
*/
|
||||
|
||||
static int _copy_pvid_file_field(const char *field, char *buf, int bufsize, char *out, int outsize)
|
||||
{
|
||||
char *p, *n;
|
||||
char *p;
|
||||
int i = 0;
|
||||
|
||||
if (!(p = strstr(buf, field)))
|
||||
return 0;
|
||||
|
||||
/*
|
||||
* file contains:
|
||||
* <major>:<minor>\n
|
||||
* vg:<vgname>\n\0
|
||||
*/
|
||||
p += strlen(field);
|
||||
|
||||
if (!(p = strchr(buf, '\n')))
|
||||
return NULL;
|
||||
while (1) {
|
||||
if (*p == '\n')
|
||||
break;
|
||||
if (*p == '\0')
|
||||
break;
|
||||
|
||||
p++; /* skip \n */
|
||||
if (p >= (buf + bufsize))
|
||||
return 0;
|
||||
if (i >= outsize-1)
|
||||
return 0;
|
||||
|
||||
if (*p && !strncmp(p, "vg:", 3)) {
|
||||
if ((n = strchr(p, '\n')))
|
||||
*n = '\0';
|
||||
return p + 3;
|
||||
out[i] = *p;
|
||||
|
||||
i++;
|
||||
p++;
|
||||
}
|
||||
return NULL;
|
||||
|
||||
return i ? 1 : 0;
|
||||
}
|
||||
|
||||
#define MAX_PVID_FILE_SIZE 512
|
||||
|
||||
int online_pvid_file_read(char *path, int *major, int *minor, char *vgname)
|
||||
int online_pvid_file_read(char *path, int *major, int *minor, char *vgname, char *devname)
|
||||
{
|
||||
char buf[MAX_PVID_FILE_SIZE] = { 0 };
|
||||
char *name;
|
||||
int fd, rv;
|
||||
|
||||
fd = open(path, O_RDONLY);
|
||||
@ -72,12 +87,47 @@ int online_pvid_file_read(char *path, int *major, int *minor, char *vgname)
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* vgname points to an offset in buf */
|
||||
if ((name = _vgname_in_pvid_file_buf(buf)))
|
||||
strncpy(vgname, name, NAME_LEN);
|
||||
else
|
||||
log_debug("No vgname in %s", path);
|
||||
if (vgname) {
|
||||
if (!strstr(buf, "vg:")) {
|
||||
log_debug("No vgname in %s", path);
|
||||
vgname[0] = '\0';
|
||||
goto copy_dev;
|
||||
}
|
||||
|
||||
if (!_copy_pvid_file_field("vg:", buf, MAX_PVID_FILE_SIZE, vgname, NAME_LEN)) {
|
||||
log_warn("Ignoring invalid vg field in %s", path);
|
||||
vgname[0] = '\0';
|
||||
goto copy_dev;
|
||||
}
|
||||
|
||||
if (!validate_name(vgname)) {
|
||||
log_warn("Ignoring invalid vgname in %s (%s)", path, vgname);
|
||||
vgname[0] = '\0';
|
||||
goto copy_dev;
|
||||
}
|
||||
}
|
||||
|
||||
copy_dev:
|
||||
if (devname) {
|
||||
if (!strstr(buf, "dev:")) {
|
||||
log_debug("No devname in %s", path);
|
||||
devname[0] = '\0';
|
||||
goto out;
|
||||
}
|
||||
|
||||
if (!_copy_pvid_file_field("dev:", buf, MAX_PVID_FILE_SIZE, devname, NAME_LEN)) {
|
||||
log_warn("Ignoring invalid devname field in %s", path);
|
||||
devname[0] = '\0';
|
||||
goto out;
|
||||
}
|
||||
|
||||
if (strncmp(devname, "/dev/", 5)) {
|
||||
log_warn("Ignoring invalid devname in %s (%s)", path, devname);
|
||||
devname[0] = '\0';
|
||||
goto out;
|
||||
}
|
||||
}
|
||||
out:
|
||||
return 1;
|
||||
}
|
||||
|
||||
@ -95,6 +145,7 @@ int get_pvs_online(struct dm_list *pvs_online, const char *vgname)
|
||||
{
|
||||
char path[PATH_MAX];
|
||||
char file_vgname[NAME_LEN];
|
||||
char file_devname[NAME_LEN];
|
||||
DIR *dir;
|
||||
struct dirent *de;
|
||||
struct pv_online *po;
|
||||
@ -116,8 +167,9 @@ int get_pvs_online(struct dm_list *pvs_online, const char *vgname)
|
||||
file_major = 0;
|
||||
file_minor = 0;
|
||||
memset(file_vgname, 0, sizeof(file_vgname));
|
||||
memset(file_devname, 0, sizeof(file_devname));
|
||||
|
||||
if (!online_pvid_file_read(path, &file_major, &file_minor, file_vgname))
|
||||
if (!online_pvid_file_read(path, &file_major, &file_minor, file_vgname, file_devname))
|
||||
continue;
|
||||
|
||||
if (vgname && strcmp(file_vgname, vgname))
|
||||
@ -130,15 +182,18 @@ int get_pvs_online(struct dm_list *pvs_online, const char *vgname)
|
||||
if (file_major || file_minor)
|
||||
po->devno = MKDEV(file_major, file_minor);
|
||||
if (file_vgname[0])
|
||||
strncpy(po->vgname, file_vgname, NAME_LEN-1);
|
||||
strncpy(po->vgname, file_vgname, NAME_LEN);
|
||||
if (file_devname[0])
|
||||
strncpy(po->devname, file_devname, NAME_LEN);
|
||||
|
||||
log_debug("Found PV online %s for VG %s %s", path, vgname, file_devname);
|
||||
dm_list_add(pvs_online, &po->list);
|
||||
}
|
||||
|
||||
if (closedir(dir))
|
||||
log_sys_debug("closedir", PVS_ONLINE_DIR);
|
||||
|
||||
log_debug("PVs online found %d for %s", dm_list_size(pvs_online), vgname ?: "all");
|
||||
log_debug("Found PVs online %d for %s", dm_list_size(pvs_online), vgname ?: "all");
|
||||
|
||||
return 1;
|
||||
}
|
||||
@ -195,6 +250,9 @@ int online_pvid_file_create(struct cmd_context *cmd, struct device *dev, const c
|
||||
char path[PATH_MAX];
|
||||
char buf[MAX_PVID_FILE_SIZE] = { 0 };
|
||||
char file_vgname[NAME_LEN];
|
||||
char file_devname[NAME_LEN];
|
||||
char devname[NAME_LEN];
|
||||
int devnamelen;
|
||||
int file_major = 0, file_minor = 0;
|
||||
int major, minor;
|
||||
int fd;
|
||||
@ -202,6 +260,7 @@ int online_pvid_file_create(struct cmd_context *cmd, struct device *dev, const c
|
||||
int len;
|
||||
int len1 = 0;
|
||||
int len2 = 0;
|
||||
int len3 = 0;
|
||||
|
||||
major = (int)MAJOR(dev->dev);
|
||||
minor = (int)MINOR(dev->dev);
|
||||
@ -218,13 +277,22 @@ int online_pvid_file_create(struct cmd_context *cmd, struct device *dev, const c
|
||||
|
||||
if (vgname) {
|
||||
if ((len2 = dm_snprintf(buf + len1, sizeof(buf) - len1, "vg:%s\n", vgname)) < 0) {
|
||||
log_print_pvscan(cmd, "Incomplete online file for %s %d:%d vg %s.", dev_name(dev), major, minor, vgname);
|
||||
log_print("Incomplete online file for %s %d:%d vg %s.", dev_name(dev), major, minor, vgname);
|
||||
/* can still continue without vgname */
|
||||
len2 = 0;
|
||||
}
|
||||
}
|
||||
|
||||
len = len1 + len2;
|
||||
devnamelen = dm_snprintf(devname, sizeof(devname), "%s", dev_name(dev));
|
||||
if ((devnamelen > 5) && (devnamelen < NAME_LEN-1)) {
|
||||
if ((len3 = dm_snprintf(buf + len1 + len2, sizeof(buf) - len1 - len2, "dev:%s\n", devname)) < 0) {
|
||||
log_print("Incomplete devname in online file for %s.", dev_name(dev));
|
||||
/* can continue without devname */
|
||||
len3 = 0;
|
||||
}
|
||||
}
|
||||
|
||||
len = len1 + len2 + len3;
|
||||
|
||||
log_debug("Create pv online: %s %d:%d %s", path, major, minor, dev_name(dev));
|
||||
|
||||
@ -269,8 +337,9 @@ check_duplicate:
|
||||
*/
|
||||
|
||||
memset(file_vgname, 0, sizeof(file_vgname));
|
||||
memset(file_devname, 0, sizeof(file_devname));
|
||||
|
||||
online_pvid_file_read(path, &file_major, &file_minor, file_vgname);
|
||||
online_pvid_file_read(path, &file_major, &file_minor, file_vgname, file_devname);
|
||||
|
||||
if ((file_major == major) && (file_minor == minor)) {
|
||||
log_debug("Existing online file for %d:%d", major, minor);
|
||||
@ -280,8 +349,8 @@ check_duplicate:
|
||||
/* Don't know how vgname might not match, but it's not good so fail. */
|
||||
|
||||
if ((file_major != major) || (file_minor != minor))
|
||||
log_error_pvscan(cmd, "PV %s is duplicate for PVID %s on %d:%d and %d:%d.",
|
||||
dev_name(dev), dev->pvid, major, minor, file_major, file_minor);
|
||||
log_error_pvscan(cmd, "PV %s %d:%d is duplicate for PVID %s on %d:%d %s.",
|
||||
dev_name(dev), major, minor, dev->pvid, file_major, file_minor, file_devname);
|
||||
|
||||
if (file_vgname[0] && vgname && strcmp(file_vgname, vgname))
|
||||
log_error_pvscan(cmd, "PV %s has unexpected VG %s vs %s.",
|
||||
@ -319,6 +388,7 @@ int get_pvs_lookup(struct dm_list *pvs_online, const char *vgname)
|
||||
char line[64];
|
||||
char pvid[ID_LEN + 1] __attribute__((aligned(8))) = { 0 };
|
||||
char file_vgname[NAME_LEN];
|
||||
char file_devname[NAME_LEN];
|
||||
struct pv_online *po;
|
||||
int file_major = 0, file_minor = 0;
|
||||
FILE *fp;
|
||||
@ -340,8 +410,9 @@ int get_pvs_lookup(struct dm_list *pvs_online, const char *vgname)
|
||||
file_major = 0;
|
||||
file_minor = 0;
|
||||
memset(file_vgname, 0, sizeof(file_vgname));
|
||||
memset(file_devname, 0, sizeof(file_devname));
|
||||
|
||||
if (!online_pvid_file_read(path, &file_major, &file_minor, file_vgname))
|
||||
if (!online_pvid_file_read(path, &file_major, &file_minor, file_vgname, file_devname))
|
||||
goto_bad;
|
||||
|
||||
if (vgname && strcmp(file_vgname, vgname))
|
||||
@ -355,11 +426,14 @@ int get_pvs_lookup(struct dm_list *pvs_online, const char *vgname)
|
||||
po->devno = MKDEV(file_major, file_minor);
|
||||
if (file_vgname[0])
|
||||
strncpy(po->vgname, file_vgname, NAME_LEN-1);
|
||||
if (file_devname[0])
|
||||
strncpy(po->devname, file_devname, NAME_LEN-1);
|
||||
|
||||
log_debug("Found PV online lookup %s for VG %s on %s", path, vgname, file_devname);
|
||||
dm_list_add(pvs_online, &po->list);
|
||||
}
|
||||
|
||||
log_debug("PVs online lookup found %d for %s", dm_list_size(pvs_online), vgname);
|
||||
log_debug("Found PVs online lookup %d for %s", dm_list_size(pvs_online), vgname);
|
||||
|
||||
fclose(fp);
|
||||
return 1;
|
||||
|
||||
@ -21,6 +21,7 @@ struct pv_online {
|
||||
dev_t devno;
|
||||
char pvid[ID_LEN + 1];
|
||||
char vgname[NAME_LEN];
|
||||
char devname[NAME_LEN];
|
||||
};
|
||||
|
||||
/*
|
||||
@ -44,7 +45,7 @@ do \
|
||||
log_error("pvscan[%d] " fmt, getpid(), ##args); \
|
||||
while (0)
|
||||
|
||||
int online_pvid_file_read(char *path, int *major, int *minor, char *vgname);
|
||||
int online_pvid_file_read(char *path, int *major, int *minor, char *vgname, char *devname);
|
||||
int online_vg_file_create(struct cmd_context *cmd, const char *vgname);
|
||||
void online_vg_file_remove(const char *vgname);
|
||||
int online_pvid_file_create(struct cmd_context *cmd, struct device *dev, const char *vgname);
|
||||
|
||||
@ -1073,26 +1073,18 @@ int label_scan_vg_online(struct cmd_context *cmd, const char *vgname,
|
||||
}
|
||||
|
||||
/*
|
||||
* For each po devno add a struct dev to dev-cache. This is a faster
|
||||
* For each po add a struct dev to dev-cache. This is a faster
|
||||
* alternative to the usual dev_cache_scan() which looks at all
|
||||
* devices. If this optimization fails, then fall back to the usual
|
||||
* dev_cache_scan().
|
||||
*/
|
||||
dm_list_iterate_items(po, &pvs_online) {
|
||||
if (!setup_devno_in_dev_cache(cmd, po->devno)) {
|
||||
log_debug("No device set up for quick mapping of %d:%d PVID %s",
|
||||
(int)MAJOR(po->devno), (int)MINOR(po->devno), po->pvid);
|
||||
if (!(po->dev = setup_dev_in_dev_cache(cmd, po->devno, po->devname[0] ? po->devname : NULL))) {
|
||||
log_debug("No device found for quick mapping of online PV %d:%d %s PVID %s",
|
||||
(int)MAJOR(po->devno), (int)MINOR(po->devno), po->devname, po->pvid);
|
||||
try_dev_scan = 1;
|
||||
break;
|
||||
continue;
|
||||
}
|
||||
|
||||
if (!(po->dev = dev_cache_get_by_devt(cmd, po->devno, NULL, NULL))) {
|
||||
log_debug("No device found for quick mapping of %d:%d PVID %s",
|
||||
(int)MAJOR(po->devno), (int)MINOR(po->devno), po->pvid);
|
||||
try_dev_scan = 1;
|
||||
break;
|
||||
}
|
||||
|
||||
if (!(devl = dm_pool_zalloc(cmd->mem, sizeof(*devl))))
|
||||
goto_bad;
|
||||
|
||||
|
||||
@ -223,7 +223,7 @@ static void _online_pvid_file_remove_devno(int major, int minor)
|
||||
file_minor = 0;
|
||||
memset(file_vgname, 0, sizeof(file_vgname));
|
||||
|
||||
online_pvid_file_read(path, &file_major, &file_minor, file_vgname);
|
||||
online_pvid_file_read(path, &file_major, &file_minor, file_vgname, NULL);
|
||||
|
||||
if ((file_major == major) && (file_minor == minor)) {
|
||||
log_debug("Unlink pv online %s", path);
|
||||
@ -509,6 +509,7 @@ static int _get_devs_from_saved_vg(struct cmd_context *cmd, const char *vgname,
|
||||
{
|
||||
char path[PATH_MAX];
|
||||
char file_vgname[NAME_LEN];
|
||||
char file_devname[NAME_LEN];
|
||||
char pvid[ID_LEN + 1] __attribute__((aligned(8))) = { 0 };
|
||||
char uuidstr[64] __attribute__((aligned(8)));
|
||||
struct pv_list *pvl;
|
||||
@ -538,8 +539,9 @@ static int _get_devs_from_saved_vg(struct cmd_context *cmd, const char *vgname,
|
||||
file_major = 0;
|
||||
file_minor = 0;
|
||||
memset(file_vgname, 0, sizeof(file_vgname));
|
||||
memset(file_devname, 0, sizeof(file_devname));
|
||||
|
||||
online_pvid_file_read(path, &file_major, &file_minor, file_vgname);
|
||||
online_pvid_file_read(path, &file_major, &file_minor, file_vgname, file_devname);
|
||||
|
||||
if (file_vgname[0] && strcmp(vgname, file_vgname)) {
|
||||
log_error_pvscan(cmd, "Wrong VG found for %d:%d PVID %s: %s vs %s",
|
||||
@ -549,13 +551,8 @@ static int _get_devs_from_saved_vg(struct cmd_context *cmd, const char *vgname,
|
||||
|
||||
devno = MKDEV(file_major, file_minor);
|
||||
|
||||
if (!setup_devno_in_dev_cache(cmd, devno)) {
|
||||
log_error_pvscan(cmd, "No device set up for %d:%d PVID %s", file_major, file_minor, pvid);
|
||||
goto bad;
|
||||
}
|
||||
|
||||
if (!(dev = dev_cache_get_by_devt(cmd, devno, NULL, NULL))) {
|
||||
log_error_pvscan(cmd, "No device found for %d:%d PVID %s", file_major, file_minor, pvid);
|
||||
if (!(dev = setup_dev_in_dev_cache(cmd, devno, file_devname[0] ? file_devname : NULL))) {
|
||||
log_error_pvscan(cmd, "No device set up for online PV %d:%d %s PVID %s", file_major, file_minor, file_devname, pvid);
|
||||
goto bad;
|
||||
}
|
||||
|
||||
@ -888,16 +885,12 @@ static int _get_args_devs(struct cmd_context *cmd, struct dm_list *pvscan_args,
|
||||
/* in common usage, no dev will be found for a devno */
|
||||
|
||||
dm_list_iterate_items(arg, pvscan_args) {
|
||||
if (arg->devname) {
|
||||
if (!setup_devname_in_dev_cache(cmd, arg->devname))
|
||||
log_error_pvscan(cmd, "No device set up for name arg %s", arg->devname);
|
||||
arg->dev = dev_cache_get(cmd, arg->devname, NULL);
|
||||
} else if (arg->devno) {
|
||||
if (!setup_devno_in_dev_cache(cmd, arg->devno))
|
||||
log_error_pvscan(cmd, "No device set up for devno arg %d", (int)arg->devno);
|
||||
arg->dev = dev_cache_get_by_devt(cmd, arg->devno, NULL, NULL);
|
||||
} else
|
||||
if (!arg->devname && !arg->devno)
|
||||
return_0;
|
||||
if (!(arg->dev = setup_dev_in_dev_cache(cmd, arg->devno, arg->devname))) {
|
||||
log_error_pvscan(cmd, "No device set up for arg %s %d:%d",
|
||||
arg->devname ?: "", (int)MAJOR(arg->devno), (int)MINOR(arg->devno));
|
||||
}
|
||||
}
|
||||
|
||||
dm_list_iterate_items(arg, pvscan_args) {
|
||||
@ -917,6 +910,7 @@ static void _set_pv_devices_online(struct cmd_context *cmd, struct volume_group
|
||||
{
|
||||
char path[PATH_MAX];
|
||||
char file_vgname[NAME_LEN];
|
||||
char file_devname[NAME_LEN];
|
||||
char pvid[ID_LEN+1] = { 0 };
|
||||
struct pv_list *pvl;
|
||||
struct device *dev;
|
||||
@ -944,9 +938,10 @@ static void _set_pv_devices_online(struct cmd_context *cmd, struct volume_group
|
||||
|
||||
major = 0;
|
||||
minor = 0;
|
||||
file_vgname[0] = '\0';
|
||||
memset(file_vgname, 0, sizeof(file_vgname));
|
||||
memset(file_devname, 0, sizeof(file_devname));
|
||||
|
||||
online_pvid_file_read(path, &major, &minor, file_vgname);
|
||||
online_pvid_file_read(path, &major, &minor, file_vgname, file_devname);
|
||||
|
||||
if (file_vgname[0] && strcmp(vg->name, file_vgname)) {
|
||||
log_warn("WARNING: VG %s PV %s wrong vgname in online file %s",
|
||||
@ -957,9 +952,9 @@ static void _set_pv_devices_online(struct cmd_context *cmd, struct volume_group
|
||||
|
||||
devno = MKDEV(major, minor);
|
||||
|
||||
if (!(dev = dev_cache_get_by_devt(cmd, devno, NULL, NULL))) {
|
||||
log_print_pvscan(cmd, "VG %s PV %s no device found for %d:%d",
|
||||
vg->name, pvid, major, minor);
|
||||
if (!(dev = setup_dev_in_dev_cache(cmd, devno, file_devname[0] ? file_devname : NULL))) {
|
||||
log_print_pvscan(cmd, "VG %s PV %s no device found for online PV %d:%d %s",
|
||||
vg->name, pvid, major, minor, file_devname);
|
||||
pvl->pv->status |= MISSING_PV;
|
||||
continue;
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user