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33344e0f7e
linux-next/fs/nfs
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Trond Myklebust 33344e0f7e pNFS: Add tracking to limit the number of pNFS retries 
When the client is reading or writing using pNFS, and hits an error
on the DS, then it typically sends a LAYOUTERROR and/or LAYOUTRETURN
to the MDS, before redirtying the failed pages, and going for a new
round of reads/writebacks. The problem is that if the server has no
way to fix the DS, then we may need a way to interrupt this loop
after a set number of attempts have been made.
This patch adds an optional module parameter that allows the admin
to specify how many times to retry the read/writeback process before
failing with a fatal error.
The default behaviour is to retry forever.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2019-04-25 14:18:14 -04:00
..
blocklayout NFS/NFSD/SUNRPC: replace generic creds with 'struct cred'. 2018-12-19 13:52:46 -05:00
filelayout pNFS: Don't allocate more pages than we need to fit a layoutget response 2018-09-30 15:35:16 -04:00
flexfilelayout pNFS: Add tracking to limit the number of pNFS retries 2019-04-25 14:18:14 -04:00
cache_lib.c NFS client updates for Linux 4.15 2017-11-17 14:18:00 -08:00
cache_lib.h NFS client updates for Linux 4.15 2017-11-17 14:18:00 -08:00
callback_proc.c NFSv4.2 copy do not allocate memory under the lock 2018-11-22 13:54:46 -05:00
callback_xdr.c NFS: Remove print_overflow_msg() 2019-02-13 11:53:45 -05:00
callback.c nfs: fixed broken compilation in nfs_callback_up_net() 2018-12-31 11:25:16 -05:00
callback.h NFS CB_OFFLOAD xdr 2018-08-09 12:56:38 -04:00
client.c NFS: Add a mount option "softerr" to allow clients to see ETIMEDOUT errors 2019-04-25 14:18:14 -04:00
delegation.c NFS: Fix a soft lockup in the delegation recovery code 2019-02-21 14:51:25 -05:00
delegation.h NFS: Fix a soft lockup in the delegation recovery code 2019-02-21 14:51:25 -05:00
dir.c NFS: Fix typo in comments of nfs_readdir_alloc_pages() 2019-02-20 17:33:55 -05:00
direct.c pNFS: Add tracking to limit the number of pNFS retries 2019-04-25 14:18:14 -04:00
dns_resolve.c NFS: Fix up a typo in nfs_dns_ent_put 2018-10-29 16:58:04 -04:00
dns_resolve.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
export.c NFS: Pass the inode down to the getattr() callback 2018-06-04 12:07:07 -04:00
file.c NFS: Replace custom error reporting mechanism with generic one 2019-04-25 14:18:14 -04:00
fscache-index.c vfs: change inode times to use struct timespec64 2018-06-05 16:57:31 -07:00
fscache.c vfs: change inode times to use struct timespec64 2018-06-05 16:57:31 -07:00
fscache.h fscache: Pass object size in rather than calling back for it 2018-04-06 14:05:14 +01:00
getroot.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
inode.c NFS: Fix up documentation warnings 2019-02-20 15:14:21 -05:00
internal.h NFS: Replace custom error reporting mechanism with generic one 2019-04-25 14:18:14 -04:00
io.c NFS: Fix up documentation warnings 2019-02-20 15:14:21 -05:00
iostat.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Kconfig pnfs/blocklayout: require 64-bit sector_t 2017-08-11 14:10:13 -04:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mount_clnt.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
namespace.c NFS: Fix up documentation warnings 2019-02-20 15:14:21 -05:00
netns.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
nfs2super.c
nfs2xdr.c NFS: Account for XDR pad of buf->pages 2019-02-14 10:13:49 -05:00
nfs3_fs.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
nfs3acl.c nfs: fix xfstest generic/099 failed on nfsv3 2019-02-20 17:33:55 -05:00
nfs3client.c NFS: Remove unused authflavour parameter from nfs_get_client() 2016-12-01 17:46:32 -05:00
nfs3proc.c NFS/NFSD/SUNRPC: replace generic creds with 'struct cred'. 2018-12-19 13:52:46 -05:00
nfs3super.c nfsv3: introduce nfs3_set_ds_client 2015-02-03 11:06:34 -08:00
nfs3xdr.c NFS: Account for XDR pad of buf->pages 2019-02-14 10:13:49 -05:00
nfs4_fs.h sunrpc: Add xprt after nfs4_test_session_trunk() 2019-01-02 12:05:19 -05:00
nfs4client.c NFS: drop useless LIST_HEAD 2019-02-20 17:33:55 -05:00
nfs4file.c NFS: Don't inadvertently clear writeback errors 2019-04-25 14:18:14 -04:00
nfs4getroot.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
nfs4idmap.c keys: Fix dependency loop between construction record and auth key 2019-02-15 14:12:09 -08:00
nfs4idmap.h NFS: Move nfs_idmap.h into fs/nfs/ 2015-04-23 15:16:14 -04:00
nfs4namespace.c NFS: Fix up documentation warnings 2019-02-20 15:14:21 -05:00
nfs4proc.c SUNRPC: Add function rpc_sleep_on_timeout() 2019-04-25 14:18:13 -04:00
nfs4renewd.c NFS/NFSD/SUNRPC: replace generic creds with 'struct cred'. 2018-12-19 13:52:46 -05:00
nfs4session.c NFSv4.1: Avoid false retries when RPC calls are interrupted 2019-02-21 13:22:43 -05:00
nfs4session.h NFSv4.1: Bump the default callback session slot count to 16 2019-03-02 16:25:26 -05:00
nfs4state.c NFS: Fix up documentation warnings 2019-02-20 15:14:21 -05:00
nfs4super.c NFS: Move nfs_idmap.h into fs/nfs/ 2015-04-23 15:16:14 -04:00
nfs4sysctl.c nfs: Do not convert nfs_idmap_cache_timeout to jiffies 2018-01-18 15:10:47 -05:00
nfs4trace.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
nfs4trace.h NFS: Add trace events to report non-zero NFS status codes 2019-02-13 12:03:21 -05:00
nfs4xdr.c NFS: Fix handling of reply page vector 2019-04-11 15:23:48 -04:00
nfs42.h NFSv4.2: Add client support for the generic 'layouterror' RPC call 2019-03-01 16:20:16 -05:00
nfs42proc.c NFSv4.1 fix incorrect return value in copy_file_range 2019-04-11 15:23:48 -04:00
nfs42xdr.c NFSv4.2: Add client support for the generic 'layouterror' RPC call 2019-03-01 16:20:16 -05:00
nfs.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
nfsroot.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
nfstrace.c NFS: Add trace events to report non-zero NFS status codes 2019-02-13 12:03:21 -05:00
nfstrace.h NFS: Add trace events to report non-zero NFS status codes 2019-02-13 12:03:21 -05:00
pagelist.c pNFS: Add tracking to limit the number of pNFS retries 2019-04-25 14:18:14 -04:00
pnfs_dev.c NFS/flexfiles: Speed up read failover when DSes are down 2019-03-01 22:37:38 -05:00
pnfs_nfs.c NFS/NFSD/SUNRPC: replace generic creds with 'struct cred'. 2018-12-19 13:52:46 -05:00
pnfs.c pNFS: Fix a typo in pnfs_update_layout 2019-03-12 16:04:51 -04:00
pnfs.h NFS/flexfiles: Speed up read failover when DSes are down 2019-03-01 22:37:38 -05:00
proc.c NFS/NFSD/SUNRPC: replace generic creds with 'struct cred'. 2018-12-19 13:52:46 -05:00
read.c NFS: Remove unused argument from nfs_create_request() 2019-04-25 14:18:14 -04:00
super.c NFS: Add a mount option "softerr" to allow clients to see ETIMEDOUT errors 2019-04-25 14:18:14 -04:00
symlink.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
sysctl.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
unlink.c NFS: Fix up documentation warnings 2019-02-20 15:14:21 -05:00
write.c pNFS: Add tracking to limit the number of pNFS retries 2019-04-25 14:18:14 -04:00