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fsstress: add the ability to create snapshots

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Snapshots are just fancy subvolumes, add this ability so we can stress
snapshot creation.  We get the deletion with SUBVOL_DELETE.

Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>
This commit is contained in:
Josef Bacik
2019-11-14 10:58:35 -05:00
committed by Eryu Guan
parent fb769938dc
commit fd08309295
1 changed files with 53 additions and 0 deletions
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ltp/fsstress.c
+53
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@@ -128,6 +128,7 @@ typedef enum {
OP_SETATTR,
OP_SETFATTR,
OP_SETXATTR,
OP_SNAPSHOT,
OP_SPLICE,
OP_STAT,
OP_SUBVOL_CREATE,
@@ -254,6 +255,7 @@ void rmdir_f(int, long);
void setattr_f(int, long);
void setfattr_f(int, long);
void setxattr_f(int, long);
void snapshot_f(int, long);
void splice_f(int, long);
void stat_f(int, long);
void subvol_create_f(int, long);
@@ -321,6 +323,7 @@ opdesc_t ops[] = {
{ OP_SETFATTR, "setfattr", setfattr_f, 2, 1 },
/* set project id (XFS_IOC_FSSETXATTR ioctl) */
{ OP_SETXATTR, "setxattr", setxattr_f, 1, 1 },
{ OP_SNAPSHOT, "snapshot", snapshot_f, 1, 1 },
{ OP_SPLICE, "splice", splice_f, 1, 1 },
{ OP_STAT, "stat", stat_f, 1, 0 },
{ OP_SUBVOL_CREATE, "subvol_create", subvol_create_f, 1, 1},
@@ -1902,6 +1905,7 @@ zero_freq(void)
#define ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0]))
opty_t btrfs_ops[] = {
OP_SNAPSHOT,
OP_SUBVOL_CREATE,
OP_SUBVOL_DELETE,
};
@@ -4702,6 +4706,55 @@ out:
free_pathname(&f);
}
void
snapshot_f(int opno, long r)
{
#ifdef HAVE_BTRFSUTIL_H
enum btrfs_util_error e;
pathname_t f;
pathname_t newf;
fent_t *fep;
int id;
int parid;
int v;
int v1;
int err;
init_pathname(&f);
if (!get_fname(FT_SUBVOLm, r, &f, NULL, &fep, &v)) {
if (v)
printf("%d/%d: snapshot - no subvolume\n", procid,
opno);
free_pathname(&f);
return;
}
init_pathname(&newf);
parid = fep->id;
err = generate_fname(fep, FT_SUBVOL, &newf, &id, &v1);
v |= v1;
if (!err) {
if (v) {
(void)fent_to_name(&f, fep);
printf("%d/%d: snapshot - no filename from %s\n",
procid, opno, f.path);
}
free_pathname(&f);
return;
}
e = btrfs_util_create_snapshot(f.path, newf.path, 0, NULL, NULL);
if (e == BTRFS_UTIL_OK)
add_to_flist(FT_SUBVOL, id, parid, 0);
if (v) {
printf("%d/%d: snapshot %s->%s %d(%s)\n", procid, opno,
f.path, newf.path, e, btrfs_util_strerror(e));
printf("%d/%d: snapshot add id=%d,parent=%d\n", procid, opno,
id, parid);
}
free_pathname(&newf);
free_pathname(&f);
#endif
}
void
stat_f(int opno, long r)
{