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NFSv4.1: do not use deviceids after MDS clientid invalidation

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Mark all deviceids established under an expired MDS clientid as invalid.
Stop all new i/o through DS and send through the MDS.
Don't use any new LAYOUTGETs that use the invalid deviceid. Purge all layouts
established under the expired MDS clientid.
Remove the MDS clientid deviceid and data servers reference

Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Andy Adamson
2011-06-15 17:52:40 -04:00
committed by Trond Myklebust
parent a56aaa02b1
commit c47abcf8ff
5 changed files with 47 additions and 0 deletions
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10
fs/nfs/nfs4filelayout.c
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@ -334,6 +334,9 @@ filelayout_read_pagelist(struct nfs_read_data *data)
__func__, data->inode->i_ino,
data->args.pgbase, (size_t)data->args.count, offset);
if (test_bit(NFS_DEVICEID_INVALID, &FILELAYOUT_DEVID_NODE(lseg)->flags))
return PNFS_NOT_ATTEMPTED;
/* Retrieve the correct rpc_client for the byte range */
j = nfs4_fl_calc_j_index(lseg, offset);
idx = nfs4_fl_calc_ds_index(lseg, j);
@ -373,6 +376,9 @@ filelayout_write_pagelist(struct nfs_write_data *data, int sync)
struct nfs_fh *fh;
int status;
if (test_bit(NFS_DEVICEID_INVALID, &FILELAYOUT_DEVID_NODE(lseg)->flags))
return PNFS_NOT_ATTEMPTED;
/* Retrieve the correct rpc_client for the byte range */
j = nfs4_fl_calc_j_index(lseg, offset);
idx = nfs4_fl_calc_ds_index(lseg, j);
@ -456,6 +462,10 @@ filelayout_check_layout(struct pnfs_layout_hdr *lo,
goto out;
} else
dsaddr = container_of(d, struct nfs4_file_layout_dsaddr, id_node);
/* Found deviceid is being reaped */
if (test_bit(NFS_DEVICEID_INVALID, &dsaddr->id_node.flags))
goto out_put;
fl->dsaddr = dsaddr;
if (fl->first_stripe_index < 0 ||