Date: Thu, 5 Jul 2018 20:20:06 +0000 (UTC) From: Rick Macklem <rmacklem@FreeBSD.org> To: src-committers@freebsd.org, svn-src-projects@freebsd.org Subject: svn commit: r336015 - projects/pnfs-planb-server/sys/fs/nfsclient Message-ID: <201807052020.w65KK6sn057437@repo.freebsd.org>
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Author: rmacklem Date: Thu Jul 5 20:20:06 2018 New Revision: 336015 URL: https://svnweb.freebsd.org/changeset/base/336015 Log: Change the pNFS client so that it does not report an NFSERR_STALE from an I/O attempt on a DS to the server via LayoutReturn. The current FreeBSD client can generate these errors for an operational DS while doing a recovery of a mirror after a mirrored DS has been repaired. I am not sure why these errors occur, but my best current guess is a race between the Layout Recall issued by the kernel code run from pnfsdscopymr(8) and a Read operation on the DS for the file bing copied. The errrors are not fatal, since the client falls back on doing I/O through the MDS, which can do the I/O successfully as a proxy. (The fact that the MDS can do this indicates that the file does still exist on the functioning DS.) Modified: projects/pnfs-planb-server/sys/fs/nfsclient/nfs_clrpcops.c Modified: projects/pnfs-planb-server/sys/fs/nfsclient/nfs_clrpcops.c ============================================================================== --- projects/pnfs-planb-server/sys/fs/nfsclient/nfs_clrpcops.c Thu Jul 5 20:12:34 2018 (r336014) +++ projects/pnfs-planb-server/sys/fs/nfsclient/nfs_clrpcops.c Thu Jul 5 20:20:06 2018 (r336015) @@ -6040,7 +6040,8 @@ nfscl_dofflayoutio(vnode_t vp, struct uio *uiop, int * *dspp, fhp, dp->nfsdi_vers, dp->nfsdi_minorvers, tcred, p); NFSCL_DEBUG(4, "commitds=%d\n", error); - if (error != 0 && error != EACCES) { + if (error != 0 && error != EACCES && error != + ESTALE) { NFSCL_DEBUG(4, "DS layreterr for commit\n"); nfscl_dserr(NFSV4OP_COMMIT, error, dp, @@ -6065,7 +6066,7 @@ nfscl_dofflayoutio(vnode_t vp, struct uio *uiop, int * off, xfer, fhp, 1, dp->nfsdi_vers, dp->nfsdi_minorvers, tcred, p); NFSCL_DEBUG(4, "readds=%d\n", error); - if (error != 0 && error != EACCES) { + if (error != 0 && error != EACCES && error != ESTALE) { NFSCL_DEBUG(4, "DS layreterr for read\n"); nfscl_dserr(NFSV4OP_READ, error, dp, lyp, *dspp); @@ -6101,7 +6102,8 @@ nfscl_dofflayoutio(vnode_t vp, struct uio *uiop, int * xfer, fhp, m, dp->nfsdi_vers, dp->nfsdi_minorvers, tcred, p); NFSCL_DEBUG(4, "nfsio_writedsmir=%d\n", error); - if (error != 0 && error != EACCES) { + if (error != 0 && error != EACCES && error != + ESTALE) { NFSCL_DEBUG(4, "DS layreterr for write\n"); nfscl_dserr(NFSV4OP_WRITE, error, dp,
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