From 8dc96566c0c34b8c2632bc6071dad208d69dd5b0 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Wed, 1 Feb 2017 21:02:07 -0500 Subject: [PATCH] NFSv4/pnfs: Don't switch off layoutget-on-open for transient errors Ensure that we only switch off the LAYOUTGET operation in the OPEN compound when the server is truly broken, and/or it is complaining that the compound is too large. Currently, we end up turning off the functionality permanently, even for transient errors such as EACCES or ENOSPC. Signed-off-by: Trond Myklebust --- fs/nfs/pnfs.c | 22 +++++++++++++++------- 1 file changed, 15 insertions(+), 7 deletions(-) diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index 4d3f04d..d5dc97f 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -2111,14 +2111,22 @@ void pnfs_parse_lgopen(struct inode *ino, struct nfs4_layoutget *lgp, dprintk("%s: entered with status %i\n", __func__, lgp->res.status); if (lgp->res.status) { switch (lgp->res.status) { - case -NFS4ERR_DELAY: - case -NFS4ERR_GRACE: - case -NFS4ERR_LAYOUTTRYLATER: - break; default: - /* FIXME - Any error not listed above permanently - * halts lgopen attempts. - */ + break; + /* + * Halt lgopen attempts if the server doesn't recognise + * the "current stateid" value, the layout type, or the + * layoutget operation as being valid. + * Also if it complains about too many ops in the compound + * or of the request/reply being too big. + */ + case -NFS4ERR_BAD_STATEID: + case -NFS4ERR_NOTSUPP: + case -NFS4ERR_REP_TOO_BIG: + case -NFS4ERR_REP_TOO_BIG_TO_CACHE: + case -NFS4ERR_REQ_TOO_BIG: + case -NFS4ERR_TOO_MANY_OPS: + case -NFS4ERR_UNKNOWN_LAYOUTTYPE: srv->caps &= ~NFS_CAP_LGOPEN; } return; -- 2.7.4