@@ -149,6 +149,13 @@ Upgrade a filesystem to support larger timestamps up to the year 2486.
The filesystem cannot be downgraded after this feature is enabled.
Once enabled, the filesystem will not be mountable by older kernels.
This feature was added to Linux 5.10.
+.TP 0.4i
+.B nrext64
+Upgrade a filesystem to support large per-inode extent counters. The maximum
+data fork extent count will be 2^48 - 1, while the maximum attribute fork
+extent count will be 2^32 - 1. The filesystem cannot be downgraded after this
+feature is enabled. Once enabled, the filesystem will not be mountable by
+older kernels. This feature was added to Linux 5.19.
.RE
.TP
.BI \-U " uuid"
@@ -51,6 +51,7 @@ int lazy_count; /* What to set if to if converting */
bool features_changed; /* did we change superblock feature bits? */
bool add_inobtcount; /* add inode btree counts to AGI */
bool add_bigtime; /* add support for timestamps up to 2486 */
+bool add_nrext64;
/* misc status variables */
@@ -92,6 +92,7 @@ extern int lazy_count; /* What to set if to if converting */
extern bool features_changed; /* did we change superblock feature bits? */
extern bool add_inobtcount; /* add inode btree counts to AGI */
extern bool add_bigtime; /* add support for timestamps up to 2486 */
+extern bool add_nrext64;
/* misc status variables */
@@ -181,6 +181,28 @@ set_bigtime(
return true;
}
+static bool
+set_nrext64(
+ struct xfs_mount *mp,
+ struct xfs_sb *new_sb)
+{
+ if (!xfs_has_crc(mp)) {
+ printf(
+ _("Nrext64 only supported on V5 filesystems.\n"));
+ exit(0);
+ }
+
+ if (xfs_has_large_extent_counts(mp)) {
+ printf(_("Filesystem already supports nrext64.\n"));
+ exit(0);
+ }
+
+ printf(_("Adding nrext64 to filesystem.\n"));
+ new_sb->sb_features_incompat |= XFS_SB_FEAT_INCOMPAT_NREXT64;
+ new_sb->sb_features_incompat |= XFS_SB_FEAT_INCOMPAT_NEEDSREPAIR;
+ return true;
+}
+
struct check_state {
struct xfs_sb sb;
uint64_t features;
@@ -384,6 +406,8 @@ upgrade_filesystem(
dirty |= set_inobtcount(mp, &new_sb);
if (add_bigtime)
dirty |= set_bigtime(mp, &new_sb);
+ if (add_nrext64)
+ dirty |= set_nrext64(mp, &new_sb);
if (!dirty)
return;
@@ -67,6 +67,7 @@ enum c_opt_nums {
CONVERT_LAZY_COUNT = 0,
CONVERT_INOBTCOUNT,
CONVERT_BIGTIME,
+ CONVERT_NREXT64,
C_MAX_OPTS,
};
@@ -74,6 +75,7 @@ static char *c_opts[] = {
[CONVERT_LAZY_COUNT] = "lazycount",
[CONVERT_INOBTCOUNT] = "inobtcount",
[CONVERT_BIGTIME] = "bigtime",
+ [CONVERT_NREXT64] = "nrext64",
[C_MAX_OPTS] = NULL,
};
@@ -324,6 +326,15 @@ process_args(int argc, char **argv)
_("-c bigtime only supports upgrades\n"));
add_bigtime = true;
break;
+ case CONVERT_NREXT64:
+ if (!val)
+ do_abort(
+ _("-c nrext64 requires a parameter\n"));
+ if (strtol(val, NULL, 0) != 1)
+ do_abort(
+ _("-c nrext64 only supports upgrades\n"));
+ add_nrext64 = true;
+ break;
default:
unknown('c', val);
break;