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tree: fix lba_count size calculation #803

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merged 1 commit into from
Apr 3, 2024
Merged

tree: fix lba_count size calculation #803

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3 changes: 3 additions & 0 deletions src/nvme/private.h
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Original file line number Diff line number Diff line change
Expand Up @@ -289,4 +289,7 @@ struct __mi_mctp_socket_ops {
};
void __nvme_mi_mctp_set_ops(const struct __mi_mctp_socket_ops *newops);

#define SECTOR_SIZE 512
#define SECTOR_SHIFT 9

#endif /* _LIBNVME_PRIVATE_H */
8 changes: 7 additions & 1 deletion src/nvme/tree.c
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Expand Up @@ -2442,11 +2442,12 @@ static int nvme_ns_init(const char *path, struct nvme_ns *ns)
{
_cleanup_free_ char *attr = NULL;
struct stat sb;
uint64_t size;
int ret;

struct sysfs_attr_table base[] = {
{ &ns->nsid, nvme_strtou32, true, "nsid" },
{ &ns->lba_count, nvme_strtou64, true, "size" },
{ &size, nvme_strtou64, true, "size" },
{ &ns->lba_size, nvme_strtou64, true, "queue/logical_block_size" },
{ ns->eui64, nvme_strtoeuid, false, "eui" },
{ ns->nguid, nvme_strtouuid, false, "nguid" },
Expand All @@ -2458,6 +2459,11 @@ static int nvme_ns_init(const char *path, struct nvme_ns *ns)
return ret;

ns->lba_shift = GETSHIFT(ns->lba_size);
/*
* size is in 512 bytes units and lba_count is in lba_size which are not
* necessarily the same.
*/
ns->lba_count = size >> (ns->lba_shift - SECTOR_SHIFT);

if (asprintf(&attr, "%s/csi", path) < 0)
return -errno;
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