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NFSv4.1 cleanup filelayout invalid layout handling 

The invalid layout bits are should only be used to block LAYOUTGETs.

Do not invalidate a layout on deviceid invalidation.
Do not invalidate a layout on un-handled READ, WRITE, COMMIT errors.

Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Andy Adamson 2012-04-27 17:53:43 -04:00 committed by Trond Myklebust
parent 554d458d79
commit 90fecfcb34
1 changed files with 6 additions and 22 deletions
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28
fs/nfs/nfs4filelayout.c
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@ -148,7 +148,6 @@ static int filelayout_async_handle_error(struct rpc_task *task,
static int filelayout_read_done_cb(struct rpc_task *task,
struct nfs_read_data *data)
{
struct nfs_pgio_header *hdr = data->header;
int reset = 0;
dprintk("%s DS read\n", __func__);
@ -157,10 +156,8 @@ static int filelayout_read_done_cb(struct rpc_task *task,
data->ds_clp, &reset) == -EAGAIN) {
dprintk("%s calling restart ds_clp %p ds_clp->cl_session %p\n",
__func__, data->ds_clp, data->ds_clp->cl_session);
if (reset) {
pnfs_set_lo_fail(hdr->lseg);
if (reset)
nfs4_reset_read(task, data);
}
rpc_restart_call_prepare(task);
return -EAGAIN;
}
@ -233,17 +230,14 @@ static void filelayout_read_release(void *data)
static int filelayout_write_done_cb(struct rpc_task *task,
struct nfs_write_data *data)
{
struct nfs_pgio_header *hdr = data->header;
int reset = 0;
if (filelayout_async_handle_error(task, data->args.context->state,
data->ds_clp, &reset) == -EAGAIN) {
dprintk("%s calling restart ds_clp %p ds_clp->cl_session %p\n",
__func__, data->ds_clp, data->ds_clp->cl_session);
if (reset) {
pnfs_set_lo_fail(hdr->lseg);
if (reset)
nfs4_reset_write(task, data);
}
rpc_restart_call_prepare(task);
return -EAGAIN;
}
@ -272,10 +266,9 @@ static int filelayout_commit_done_cb(struct rpc_task *task,
data->ds_clp, &reset) == -EAGAIN) {
dprintk("%s calling restart ds_clp %p ds_clp->cl_session %p\n",
__func__, data->ds_clp, data->ds_clp->cl_session);
if (reset) {
if (reset)
prepare_to_resend_writes(data);
pnfs_set_lo_fail(data->lseg);
} else
else
rpc_restart_call_prepare(task);
return -EAGAIN;
}
@ -393,12 +386,8 @@ filelayout_read_pagelist(struct nfs_read_data *data)
j = nfs4_fl_calc_j_index(lseg, offset);
idx = nfs4_fl_calc_ds_index(lseg, j);
ds = nfs4_fl_prepare_ds(lseg, idx);
if (!ds) {
/* Either layout fh index faulty, or ds connect failed */
set_bit(lo_fail_bit(IOMODE_RW), &lseg->pls_layout->plh_flags);
set_bit(lo_fail_bit(IOMODE_READ), &lseg->pls_layout->plh_flags);
if (!ds)
return PNFS_NOT_ATTEMPTED;
}
dprintk("%s USE DS: %s\n", __func__, ds->ds_remotestr);
/* No multipath support. Use first DS */
@ -433,11 +422,8 @@ filelayout_write_pagelist(struct nfs_write_data *data, int sync)
j = nfs4_fl_calc_j_index(lseg, offset);
idx = nfs4_fl_calc_ds_index(lseg, j);
ds = nfs4_fl_prepare_ds(lseg, idx);
if (!ds) {
set_bit(lo_fail_bit(IOMODE_RW), &lseg->pls_layout->plh_flags);
set_bit(lo_fail_bit(IOMODE_READ), &lseg->pls_layout->plh_flags);
if (!ds)
return PNFS_NOT_ATTEMPTED;
}
dprintk("%s ino %lu sync %d req %Zu@%llu DS: %s\n", __func__,
hdr->inode->i_ino, sync, (size_t) data->args.count, offset,
ds->ds_remotestr);
@ -969,8 +955,6 @@ static int filelayout_initiate_commit(struct nfs_commit_data *data, int how)
idx = calc_ds_index_from_commit(lseg, data->ds_commit_index);
ds = nfs4_fl_prepare_ds(lseg, idx);
if (!ds) {
set_bit(lo_fail_bit(IOMODE_RW), &lseg->pls_layout->plh_flags);
set_bit(lo_fail_bit(IOMODE_READ), &lseg->pls_layout->plh_flags);
prepare_to_resend_writes(data);
filelayout_commit_release(data);
return -EAGAIN;