From: Dai Ngo <dai.ngo@oracle.com>
To: linux-nfs@vger.kernel.org
Subject: [PATCH 0/1] NFSv4.2: Fix NFS4ERR_STALE with inter server copy
Date: Wed, 23 Sep 2020 19:06:05 -0400 [thread overview]
Message-ID: <20200923230606.63904-1-dai.ngo@oracle.com> (raw)
This patch provides a temporarily relief for inter copy to work with
some common configs. For long term solution, I think Trond's suggestion
of using fs/nfs/nfs_common to store an op table that server can use to
access the client code is the way to go.
fs/nfsd/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
Below are the results of my testing of upstream mainline without and with the fix.
Upstream version used for testing: 5.9-rc5
1. Upstream mainline (existing code: NFS_FS=y)
|----------------------------------------------------------------------------------------|
| NFSD | NFS_FS | NFS_V4 | RESULTS |
|----------------------------------------------------------------------------------------|
| y | y | m | Build errors: nfs42_ssc_open/close |
|----------------------------------------------------------------------------------------|
| y | m | m | Build OK, inter server copy failed with NFS4ERR_STALE |
| | | | See NOTE1. |
|----------------------------------------------------------------------------------------|
| y | m | y (m) | Build OK, inter server copy failed with NFS4ERR_STALE |
| | | | See NOTE2. |
|----------------------------------------------------------------------------------------|
| y | y | y | Build OK, inter server copy OK |
|----------------------------------------------------------------------------------------|
|----------------------------------------------------------------------------------------|
| NFSD | NFS_FS | NFS_V4 | RESULTS |
|----------------------------------------------------------------------------------------|
| m | y | m | Build OK, inter server copy OK |
|----------------------------------------------------------------------------------------|
| m | m | m | Build OK, inter server copy failed with NFS4ERR_STALE |
|----------------------------------------------------------------------------------------|
| m | m | y (m) | Build OK, inter server copy failed with NFS4ERR_STALE |
|----------------------------------------------------------------------------------------|
| m | y | y | Build OK, inter server copy OK |
|----------------------------------------------------------------------------------------|
2. Upstream mainline (with the fix: !(NFSD=y && (NFS_FS=m || NFS_V4=m))
|----------------------------------------------------------------------------------------|
| NFSD | NFS_FS | NFS_V4 | RESULTS |
|----------------------------------------------------------------------------------------|
| m | y | m | Build OK, inter server copy OK |
|----------------------------------------------------------------------------------------|
| m | m | m | Build OK, inter server copy OK |
|----------------------------------------------------------------------------------------|
| m | m | y (m) | Build OK, inter server copy OK |
|----------------------------------------------------------------------------------------|
| m | y | y | Build OK, inter server copy OK |
|----------------------------------------------------------------------------------------|
|----------------------------------------------------------------------------------------|
| NFSD | NFS_FS | NFS_V4 | RESULTS |
|----------------------------------------------------------------------------------------|
| y | y | m | Build OK, inter server copy failed with NFS4ERR_STALE |
|----------------------------------------------------------------------------------------|
| y | m | m | Build OK, inter server copy failed with NFS4ERR_STALE |
|----------------------------------------------------------------------------------------|
| y | m | y (m) | Build OK, inter server copy failed with NFS4ERR_STALE |
|----------------------------------------------------------------------------------------|
| y | y | y | Build OK, inter server copy OK |
|----------------------------------------------------------------------------------------|
NOTE1:
BUG: When inter server copy fails with NFS4ERR_STALE, it left the file
created with size of 0!
NOTE2:
When NFS_V4=y and NFS_FS=m, the build process automatically builds with NFS_V4=m
and ignores the setting NFS_V4=y in the config file.
This probably due to NFS_V4 in fs/nfs/Kconfig is configured to depend on NFS_FS.
next reply other threads:[~2020-09-23 23:06 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-23 23:06 Dai Ngo [this message]
2020-09-23 23:06 ` [PATCH 1/1] NFSv4.2: Fix NFS4ERR_STALE error when doing inter server copy Dai Ngo
2020-09-23 23:29 ` [PATCH 0/1] NFSv4.2: Fix NFS4ERR_STALE with " Chuck Lever
2020-09-24 1:57 ` Dai Ngo
2020-09-30 3:18 ` Dai Ngo
2020-10-01 20:51 ` Bruce Fields
2020-10-01 21:48 ` Dai Ngo
2020-10-01 21:52 ` Bruce Fields
2020-10-01 22:15 ` Dai Ngo
[not found] ` <87879d23-986f-e123-1597-842a2913e864@oracle.com>
2020-10-06 15:20 ` Bruce Fields
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