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NeilBrown 190e4fbf96 [PATCH] knfsd: nfsd4: initialize recovery directory 
NFSv4 clients are required to know what state they have on the server so that
they can reclaim it on server reboot.  However, it is possible for
pathalogical combinations of server reboots and network partitions to leave a
client in a state where it cannot know whether it has lost its state on the
server.

For this reason, rfc3530 requires that we store some information about clients
to stable storage.

So we maintain a directory /var/lib/nfs/v4recovery with a subdirectory for
each client with active state.  We leave open the possibility of including
files underneath each such subdirectory with information about the client, but
for now the subdirectories are empty.

We create a client subdirectory whenever a client makes its first non-reclaim
open_confirm.

We remove a client subdirectory whenever either
        a) its lease expires, or
	b) the grace period ends without it reclaiming anything.
When handling reclaims, we allow the reclaim if and only if the client doing
the reclaim has a subdirectory.

This patch adds just the code to scan the recovery directory on nfsd startup.

Signed-off-by: Andy Adamson <andros@citi.umich.edu>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
 		2005-06-24 00:06:35 -07:00
..
adfs Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
affs Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
afs [PATCH] Exterminate PAGE_BUG 2005-05-01 08:59:01 -07:00
autofs Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
autofs4 [PATCH] autofs4: bad lookup fix 2005-06-21 19:07:35 -07:00
befs Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
bfs Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
cifs [CIFS] Fix cifs update of page cache. Write at correct offset when out of memory 2005-06-09 14:44:07 -07:00
coda [PATCH] class: convert the remaining class_simple users in the kernel to usee the new class api 2005-06-20 15:15:11 -07:00
cramfs Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
debugfs [PATCH] remove duplicate get_dentry functions in various places 2005-06-23 09:45:20 -07:00
devfs Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
devpts Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
efs Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
exportfs Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ext2 [PATCH] remove <linux/xattr_acl.h> 2005-06-23 09:45:33 -07:00
ext3 [PATCH] quota: ext3: Improve quota credit estimates 2005-06-24 00:05:20 -07:00
fat Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
freevxfs Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
hfs [PATCH] hfs, hfsplus: don't leak s_fs_info and fix an oops 2005-05-01 08:59:16 -07:00
hfsplus [PATCH] hfs, hfsplus: don't leak s_fs_info and fix an oops 2005-05-01 08:59:16 -07:00
hostfs [PATCH] uml: remove 2_5compat.h 2005-05-28 16:46:11 -07:00
hpfs Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
hppfs Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
hugetlbfs [PATCH] Avoiding mmap fragmentation 2005-06-21 18:46:16 -07:00
isofs [PATCH] isofs: show hidden files, add granularity for assoc/hidden files flags 2005-06-21 19:07:38 -07:00
jbd [PATCH] ext3: fix list scanning in __cleanup_transaction 2005-06-02 15:12:29 -07:00
jffs Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
jffs2 [PATCH] make some things static 2005-05-05 16:36:47 -07:00
jfs [PATCH] remove <linux/xattr_acl.h> 2005-06-23 09:45:33 -07:00
lockd [PATCH] knfsd: lockd: flush signals on shutdown 2005-06-24 00:06:30 -07:00
minix Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
msdos Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ncpfs Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
nfs [PATCH] Remove f_error field from struct file 2005-06-23 09:45:33 -07:00
nfs_common [PATCH] NFSD: Add server support for NFSv3 ACLs. 2005-06-22 16:07:23 -04:00
nfsd [PATCH] knfsd: nfsd4: initialize recovery directory 2005-06-24 00:06:35 -07:00
nls [PATCH] make some things static 2005-05-05 16:36:47 -07:00
ntfs Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
openpromfs Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
partitions [PATCH] revert msdos partitioning fix 2005-05-06 22:09:27 -07:00
proc [PATCH] setuid core dump 2005-06-23 09:45:26 -07:00
qnx4 Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ramfs Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
reiserfs [PATCH] Make reiserfs BUG on too big transaction 2005-06-24 00:05:23 -07:00
romfs Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
smbfs Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sysfs [PATCH] remove duplicate get_dentry functions in various places 2005-06-23 09:45:20 -07:00
sysv Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
udf [PATCH] UDF filesystem: array '__mon_yday' declared as not static 2005-05-31 14:54:18 -07:00
ufs Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
umsdos Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
vfat Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
xfs [PATCH] pass iocb to dio_iodone_t 2005-06-24 00:05:19 -07:00
Kconfig [PATCH] knfsd: nfsd4: reboot hash 2005-06-24 00:06:33 -07:00
Kconfig.binfmt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
Makefile [PATCH] NFSD: Add server support for NFSv3 ACLs. 2005-06-22 16:07:23 -04:00
aio.c [PATCH] aio: optimize io_submit_one() 2005-05-01 08:59:16 -07:00
attr.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
bad_inode.c [PATCH] make some things static 2005-05-05 16:36:47 -07:00
binfmt_aout.c [PATCH] Avoiding mmap fragmentation 2005-06-21 18:46:16 -07:00
binfmt_elf.c [PATCH] Avoiding mmap fragmentation 2005-06-21 18:46:16 -07:00
binfmt_elf_fdpic.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
binfmt_em86.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
binfmt_flat.c [PATCH] binfmt_flat mmap flag fix 2005-06-06 14:57:51 -07:00
binfmt_misc.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
binfmt_script.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
binfmt_som.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
bio.c [PATCH] DocBook: fix some descriptions 2005-05-01 08:59:26 -07:00
block_dev.c [PATCH] block: add unlocked_ioctl support for block devices 2005-06-23 09:45:32 -07:00
buffer.c [PATCH] Bug in error recovery in fs/buffer.c::__block_prepare_write() 2005-06-23 09:45:34 -07:00
char_dev.c [PATCH] add check to /proc/devices read routines 2005-06-23 09:45:19 -07:00
compat.c [PATCH] NFS4: Don't use __user with compat_uptr_t 2005-04-27 15:39:03 -07:00
compat_ioctl.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
dcache.c [PATCH] make some things static 2005-05-05 16:36:47 -07:00
dcookies.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
direct-io.c [PATCH] pass iocb to dio_iodone_t 2005-06-24 00:05:19 -07:00
dnotify.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
dquot.c [PATCH] quota: sanitize dentry handling in vfs_quota_on_mount 2005-06-23 09:45:20 -07:00
eventpoll.c [PATCH] Remove eventpoll macro obfuscation 2005-06-23 09:45:30 -07:00
exec.c [PATCH] setuid core dump 2005-06-23 09:45:26 -07:00
fcntl.c [PATCH] convert that currently tests _NSIG directly to use valid_signal() 2005-05-01 08:59:14 -07:00
fifo.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
file.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
file_table.c [PATCH] Fix of bogus file max limit messages 2005-06-23 09:45:26 -07:00
filesystems.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
fs-writeback.c [PATCH] O(1) sb list traversing on syncs 2005-06-23 09:45:27 -07:00
inode.c [PATCH] fix for prune_icache()/forced final iput() races 2005-06-23 09:45:17 -07:00
ioctl.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
libfs.c [PATCH] libfs: add simple attribute files 2005-06-20 15:15:30 -07:00
locks.c [PATCH] VFS: Ensure that all the on-stack struct file_lock call fl_release_private 2005-06-22 16:07:40 -04:00
mbcache.c [PATCH] make some things static 2005-05-05 16:36:47 -07:00
mpage.c [PATCH] mpage_end_io_write() I/O error handling fix 2005-06-04 17:12:59 -07:00
namei.c [PATCH] add some comments to lookup_create() 2005-06-23 09:45:26 -07:00
namespace.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
nfsctl.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
open.c [PATCH] sys_open() cleanup 2005-06-23 09:45:36 -07:00
pipe.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
posix_acl.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
quota.c [PATCH] O(1) sb list traversing on syncs 2005-06-23 09:45:27 -07:00
quota_v1.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
quota_v2.c [PATCH] quota: possible bug in quota format v2 support 2005-04-16 15:25:47 -07:00
read_write.c [PATCH] aio: fix do_sync_(read|write) to properly handle aio retries 2005-06-23 09:45:34 -07:00
readdir.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
select.c [PATCH] make some things static 2005-05-05 16:36:47 -07:00
seq_file.c [PATCH] DocBook: fix some descriptions 2005-05-01 08:59:26 -07:00
stat.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
super.c [PATCH] O(1) sb list traversing on syncs 2005-06-23 09:45:27 -07:00
xattr.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
xattr_acl.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00