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path: root/fs/exofs/super.c
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Diffstat (limited to 'fs/exofs/super.c')
-rw-r--r--fs/exofs/super.c121
1 files changed, 90 insertions, 31 deletions
diff --git a/fs/exofs/super.c b/fs/exofs/super.c
index a1d1e77b12e..6cf5e4e84d6 100644
--- a/fs/exofs/super.c
+++ b/fs/exofs/super.c
@@ -210,7 +210,7 @@ int exofs_sync_fs(struct super_block *sb, int wait)
sbi = sb->s_fs_info;
fscb = &sbi->s_fscb;
- ret = exofs_get_io_state(sbi, &ios);
+ ret = exofs_get_io_state(&sbi->layout, &ios);
if (ret)
goto out;
@@ -264,12 +264,12 @@ static void _exofs_print_device(const char *msg, const char *dev_path,
void exofs_free_sbi(struct exofs_sb_info *sbi)
{
- while (sbi->s_numdevs) {
- int i = --sbi->s_numdevs;
- struct osd_dev *od = sbi->s_ods[i];
+ while (sbi->layout.s_numdevs) {
+ int i = --sbi->layout.s_numdevs;
+ struct osd_dev *od = sbi->layout.s_ods[i];
if (od) {
- sbi->s_ods[i] = NULL;
+ sbi->layout.s_ods[i] = NULL;
osduld_put_device(od);
}
}
@@ -298,7 +298,8 @@ static void exofs_put_super(struct super_block *sb)
msecs_to_jiffies(100));
}
- _exofs_print_device("Unmounting", NULL, sbi->s_ods[0], sbi->s_pid);
+ _exofs_print_device("Unmounting", NULL, sbi->layout.s_ods[0],
+ sbi->layout.s_pid);
exofs_free_sbi(sbi);
sb->s_fs_info = NULL;
@@ -307,6 +308,8 @@ static void exofs_put_super(struct super_block *sb)
static int _read_and_match_data_map(struct exofs_sb_info *sbi, unsigned numdevs,
struct exofs_device_table *dt)
{
+ u64 stripe_length;
+
sbi->data_map.odm_num_comps =
le32_to_cpu(dt->dt_data_map.cb_num_comps);
sbi->data_map.odm_stripe_unit =
@@ -320,14 +323,63 @@ static int _read_and_match_data_map(struct exofs_sb_info *sbi, unsigned numdevs,
sbi->data_map.odm_raid_algorithm =
le32_to_cpu(dt->dt_data_map.cb_raid_algorithm);
-/* FIXME: Hard coded mirror only for now. if not so do not mount */
- if ((sbi->data_map.odm_num_comps != numdevs) ||
- (sbi->data_map.odm_stripe_unit != EXOFS_BLKSIZE) ||
- (sbi->data_map.odm_raid_algorithm != PNFS_OSD_RAID_0) ||
- (sbi->data_map.odm_mirror_cnt != (numdevs - 1)))
+/* FIXME: Only raid0 for now. if not so, do not mount */
+ if (sbi->data_map.odm_num_comps != numdevs) {
+ EXOFS_ERR("odm_num_comps(%u) != numdevs(%u)\n",
+ sbi->data_map.odm_num_comps, numdevs);
return -EINVAL;
- else
- return 0;
+ }
+ if (sbi->data_map.odm_raid_algorithm != PNFS_OSD_RAID_0) {
+ EXOFS_ERR("Only RAID_0 for now\n");
+ return -EINVAL;
+ }
+ if (0 != (numdevs % (sbi->data_map.odm_mirror_cnt + 1))) {
+ EXOFS_ERR("Data Map wrong, numdevs=%d mirrors=%d\n",
+ numdevs, sbi->data_map.odm_mirror_cnt);
+ return -EINVAL;
+ }
+
+ if (0 != (sbi->data_map.odm_stripe_unit & ~PAGE_MASK)) {
+ EXOFS_ERR("Stripe Unit(0x%llx)"
+ " must be Multples of PAGE_SIZE(0x%lx)\n",
+ _LLU(sbi->data_map.odm_stripe_unit), PAGE_SIZE);
+ return -EINVAL;
+ }
+
+ sbi->layout.stripe_unit = sbi->data_map.odm_stripe_unit;
+ sbi->layout.mirrors_p1 = sbi->data_map.odm_mirror_cnt + 1;
+
+ if (sbi->data_map.odm_group_width) {
+ sbi->layout.group_width = sbi->data_map.odm_group_width;
+ sbi->layout.group_depth = sbi->data_map.odm_group_depth;
+ if (!sbi->layout.group_depth) {
+ EXOFS_ERR("group_depth == 0 && group_width != 0\n");
+ return -EINVAL;
+ }
+ sbi->layout.group_count = sbi->data_map.odm_num_comps /
+ sbi->layout.mirrors_p1 /
+ sbi->data_map.odm_group_width;
+ } else {
+ if (sbi->data_map.odm_group_depth) {
+ printk(KERN_NOTICE "Warning: group_depth ignored "
+ "group_width == 0 && group_depth == %d\n",
+ sbi->data_map.odm_group_depth);
+ sbi->data_map.odm_group_depth = 0;
+ }
+ sbi->layout.group_width = sbi->data_map.odm_num_comps /
+ sbi->layout.mirrors_p1;
+ sbi->layout.group_depth = -1;
+ sbi->layout.group_count = 1;
+ }
+
+ stripe_length = (u64)sbi->layout.group_width * sbi->layout.stripe_unit;
+ if (stripe_length >= (1ULL << 32)) {
+ EXOFS_ERR("Total Stripe length(0x%llx)"
+ " >= 32bit is not supported\n", _LLU(stripe_length));
+ return -EINVAL;
+ }
+
+ return 0;
}
/* @odi is valid only as long as @fscb_dev is valid */
@@ -361,7 +413,7 @@ static int exofs_read_lookup_dev_table(struct exofs_sb_info **psbi,
{
struct exofs_sb_info *sbi = *psbi;
struct osd_dev *fscb_od;
- struct osd_obj_id obj = {.partition = sbi->s_pid,
+ struct osd_obj_id obj = {.partition = sbi->layout.s_pid,
.id = EXOFS_DEVTABLE_ID};
struct exofs_device_table *dt;
unsigned table_bytes = table_count * sizeof(dt->dt_dev_table[0]) +
@@ -376,9 +428,9 @@ static int exofs_read_lookup_dev_table(struct exofs_sb_info **psbi,
return -ENOMEM;
}
- fscb_od = sbi->s_ods[0];
- sbi->s_ods[0] = NULL;
- sbi->s_numdevs = 0;
+ fscb_od = sbi->layout.s_ods[0];
+ sbi->layout.s_ods[0] = NULL;
+ sbi->layout.s_numdevs = 0;
ret = exofs_read_kern(fscb_od, sbi->s_cred, &obj, 0, dt, table_bytes);
if (unlikely(ret)) {
EXOFS_ERR("ERROR: reading device table\n");
@@ -397,14 +449,15 @@ static int exofs_read_lookup_dev_table(struct exofs_sb_info **psbi,
goto out;
if (likely(numdevs > 1)) {
- unsigned size = numdevs * sizeof(sbi->s_ods[0]);
+ unsigned size = numdevs * sizeof(sbi->layout.s_ods[0]);
sbi = krealloc(sbi, sizeof(*sbi) + size, GFP_KERNEL);
if (unlikely(!sbi)) {
ret = -ENOMEM;
goto out;
}
- memset(&sbi->s_ods[1], 0, size - sizeof(sbi->s_ods[0]));
+ memset(&sbi->layout.s_ods[1], 0,
+ size - sizeof(sbi->layout.s_ods[0]));
*psbi = sbi;
}
@@ -427,8 +480,8 @@ static int exofs_read_lookup_dev_table(struct exofs_sb_info **psbi,
* line. We always keep them in device-table order.
*/
if (fscb_od && osduld_device_same(fscb_od, &odi)) {
- sbi->s_ods[i] = fscb_od;
- ++sbi->s_numdevs;
+ sbi->layout.s_ods[i] = fscb_od;
+ ++sbi->layout.s_numdevs;
fscb_od = NULL;
continue;
}
@@ -441,8 +494,8 @@ static int exofs_read_lookup_dev_table(struct exofs_sb_info **psbi,
goto out;
}
- sbi->s_ods[i] = od;
- ++sbi->s_numdevs;
+ sbi->layout.s_ods[i] = od;
+ ++sbi->layout.s_numdevs;
/* Read the fscb of the other devices to make sure the FS
* partition is there.
@@ -499,9 +552,15 @@ static int exofs_fill_super(struct super_block *sb, void *data, int silent)
goto free_sbi;
}
- sbi->s_ods[0] = od;
- sbi->s_numdevs = 1;
- sbi->s_pid = opts->pid;
+ /* Default layout in case we do not have a device-table */
+ sbi->layout.stripe_unit = PAGE_SIZE;
+ sbi->layout.mirrors_p1 = 1;
+ sbi->layout.group_width = 1;
+ sbi->layout.group_depth = -1;
+ sbi->layout.group_count = 1;
+ sbi->layout.s_ods[0] = od;
+ sbi->layout.s_numdevs = 1;
+ sbi->layout.s_pid = opts->pid;
sbi->s_timeout = opts->timeout;
/* fill in some other data by hand */
@@ -514,7 +573,7 @@ static int exofs_fill_super(struct super_block *sb, void *data, int silent)
sb->s_bdev = NULL;
sb->s_dev = 0;
- obj.partition = sbi->s_pid;
+ obj.partition = sbi->layout.s_pid;
obj.id = EXOFS_SUPER_ID;
exofs_make_credential(sbi->s_cred, &obj);
@@ -578,13 +637,13 @@ static int exofs_fill_super(struct super_block *sb, void *data, int silent)
goto free_sbi;
}
- _exofs_print_device("Mounting", opts->dev_name, sbi->s_ods[0],
- sbi->s_pid);
+ _exofs_print_device("Mounting", opts->dev_name, sbi->layout.s_ods[0],
+ sbi->layout.s_pid);
return 0;
free_sbi:
EXOFS_ERR("Unable to mount exofs on %s pid=0x%llx err=%d\n",
- opts->dev_name, sbi->s_pid, ret);
+ opts->dev_name, sbi->layout.s_pid, ret);
exofs_free_sbi(sbi);
return ret;
}
@@ -627,7 +686,7 @@ static int exofs_statfs(struct dentry *dentry, struct kstatfs *buf)
uint8_t cred_a[OSD_CAP_LEN];
int ret;
- ret = exofs_get_io_state(sbi, &ios);
+ ret = exofs_get_io_state(&sbi->layout, &ios);
if (ret) {
EXOFS_DBGMSG("exofs_get_io_state failed.\n");
return ret;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-21 18:15:07 +0000