Commit 571dba52 authored by Greg Farnum's avatar Greg Farnum Committed by Sage Weil

ceph: add CEPH_MDS_OP_SETDIRLAYOUT and associated ioctl.

Signed-off-by: default avatarSage Weil <sage@newdream.net>
parent 010e3b48
...@@ -91,6 +91,68 @@ static long ceph_ioctl_set_layout(struct file *file, void __user *arg) ...@@ -91,6 +91,68 @@ static long ceph_ioctl_set_layout(struct file *file, void __user *arg)
return err; return err;
} }
/*
* Set a layout policy on a directory inode. All items in the tree
* rooted at this inode will inherit this layout on creation,
* (It doesn't apply retroactively )
* unless a subdirectory has its own layout policy.
*/
static long ceph_ioctl_set_layout_policy (struct file *file, void __user *arg)
{
struct inode *inode = file->f_dentry->d_inode;
struct ceph_mds_request *req;
struct ceph_ioctl_layout l;
int err, i;
struct ceph_mds_client *mdsc = ceph_sb_to_client(inode->i_sb)->mdsc;
/* copy and validate */
if (copy_from_user(&l, arg, sizeof(l)))
return -EFAULT;
if ((l.object_size & ~PAGE_MASK) ||
(l.stripe_unit & ~PAGE_MASK) ||
!l.stripe_unit ||
(l.object_size &&
(unsigned)l.object_size % (unsigned)l.stripe_unit))
return -EINVAL;
/* make sure it's a valid data pool */
if (l.data_pool > 0) {
mutex_lock(&mdsc->mutex);
err = -EINVAL;
for (i = 0; i < mdsc->mdsmap->m_num_data_pg_pools; i++)
if (mdsc->mdsmap->m_data_pg_pools[i] == l.data_pool) {
err = 0;
break;
}
mutex_unlock(&mdsc->mutex);
if (err)
return err;
}
req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_SETDIRLAYOUT,
USE_AUTH_MDS);
if (IS_ERR(req))
return PTR_ERR(req);
req->r_inode = igrab(inode);
req->r_args.setlayout.layout.fl_stripe_unit =
cpu_to_le32(l.stripe_unit);
req->r_args.setlayout.layout.fl_stripe_count =
cpu_to_le32(l.stripe_count);
req->r_args.setlayout.layout.fl_object_size =
cpu_to_le32(l.object_size);
req->r_args.setlayout.layout.fl_pg_pool =
cpu_to_le32(l.data_pool);
req->r_args.setlayout.layout.fl_pg_preferred =
cpu_to_le32(l.preferred_osd);
err = ceph_mdsc_do_request(mdsc, inode, req);
ceph_mdsc_put_request(req);
return err;
}
/* /*
* Return object name, size/offset information, and location (OSD * Return object name, size/offset information, and location (OSD
* number, network address) for a given file offset. * number, network address) for a given file offset.
...@@ -177,11 +239,15 @@ long ceph_ioctl(struct file *file, unsigned int cmd, unsigned long arg) ...@@ -177,11 +239,15 @@ long ceph_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
case CEPH_IOC_SET_LAYOUT: case CEPH_IOC_SET_LAYOUT:
return ceph_ioctl_set_layout(file, (void __user *)arg); return ceph_ioctl_set_layout(file, (void __user *)arg);
case CEPH_IOC_SET_LAYOUT_POLICY:
return ceph_ioctl_set_layout_policy(file, (void __user *)arg);
case CEPH_IOC_GET_DATALOC: case CEPH_IOC_GET_DATALOC:
return ceph_ioctl_get_dataloc(file, (void __user *)arg); return ceph_ioctl_get_dataloc(file, (void __user *)arg);
case CEPH_IOC_LAZYIO: case CEPH_IOC_LAZYIO:
return ceph_ioctl_lazyio(file); return ceph_ioctl_lazyio(file);
} }
return -ENOTTY; return -ENOTTY;
} }
...@@ -4,7 +4,7 @@ ...@@ -4,7 +4,7 @@
#include <linux/ioctl.h> #include <linux/ioctl.h>
#include <linux/types.h> #include <linux/types.h>
#define CEPH_IOCTL_MAGIC 0x97 #define CEPH_IOCTL_MAGIC 0x98
/* just use u64 to align sanely on all archs */ /* just use u64 to align sanely on all archs */
struct ceph_ioctl_layout { struct ceph_ioctl_layout {
...@@ -17,6 +17,8 @@ struct ceph_ioctl_layout { ...@@ -17,6 +17,8 @@ struct ceph_ioctl_layout {
struct ceph_ioctl_layout) struct ceph_ioctl_layout)
#define CEPH_IOC_SET_LAYOUT _IOW(CEPH_IOCTL_MAGIC, 2, \ #define CEPH_IOC_SET_LAYOUT _IOW(CEPH_IOCTL_MAGIC, 2, \
struct ceph_ioctl_layout) struct ceph_ioctl_layout)
#define CEPH_IOC_SET_LAYOUT_POLICY _IOW(CEPH_IOCTL_MAGIC, 5, \
struct ceph_ioctl_layout)
/* /*
* Extract identity, address of the OSD and object storing a given * Extract identity, address of the OSD and object storing a given
......
...@@ -299,6 +299,7 @@ enum { ...@@ -299,6 +299,7 @@ enum {
CEPH_MDS_OP_SETATTR = 0x01108, CEPH_MDS_OP_SETATTR = 0x01108,
CEPH_MDS_OP_SETFILELOCK= 0x01109, CEPH_MDS_OP_SETFILELOCK= 0x01109,
CEPH_MDS_OP_GETFILELOCK= 0x00110, CEPH_MDS_OP_GETFILELOCK= 0x00110,
CEPH_MDS_OP_SETDIRLAYOUT=0x0110a,
CEPH_MDS_OP_MKNOD = 0x01201, CEPH_MDS_OP_MKNOD = 0x01201,
CEPH_MDS_OP_LINK = 0x01202, CEPH_MDS_OP_LINK = 0x01202,
......
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