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The performance of these is minimal (these days) and they can return
invalid results when used as part of applications that do not use
sys_fork().
Autobuild-User: Jelmer Vernooij <jelmer@samba.org>
Autobuild-Date: Sat Mar 24 21:55:41 CET 2012 on sn-devel-104
The smaller libraries are currently all trivial in size and don't have
any dependencies other than samba-util.
Having lots of small private libraries is a pain for packaging,
and there isn't much advantage in this.
We unmap the tdb on expand, the remap. But when we have INCOHERENT_MMAP
(ie. OpenBSD) and we're inside a transaction, doing the expand can mean
we need to read from the database to partially fill a transaction block.
This fails, because if mmap is incoherent we never allow accessing the
database via read/write.
The solution is not to unmap and remap until we've actually written the
padding at the end of the file.
Reported-by: Amitay Isaacs <amitay@gmail.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Autobuild-User: Rusty Russell <rusty@rustcorp.com.au>
Autobuild-Date: Fri Mar 23 02:53:15 CET 2012 on sn-devel-104
Since we force mmap on, we don't intercept writes to the db, so we never
see it in an inconsistent state. #ifdef over the check that we should have
recovered it at least once.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
if setting the lease in GPFS failed, there is not much sense in trying
to set a lease just locally that would not inform us of openers
on other cluster nodes
GPFS provides the gpfs_prealloc call. Implement the fallocate
callback with mode VFS_FALLOCATE_EXTEND_SIZE using this call.
There is no support for VFS_FALLOCATE_KEEP_SIZE, so report
this mode as not available.
When a client requests the information about free space and space used,
adjust the reported values according to quotas in the GPFS file system:
- Retrieve quotas for the current user, current group and fileset for
the top level of the share.
- If the soft block quota grace time has expired, report disk as full.
- If a hard block quota has been exceeded, report disk as full.
- If none of the hard block quotas been exceeded, report
share size and free space according to the lowest limits found in
the quotas.
- If no applicable hard block quota has been set, report the
information from the statfs call.
This feature is disabled by default and has to be enabled by setting the
option gpfs:dfreequota.
Add the GPFS api calls for reporting the quotas and free space:
- get_gpfs_quota for querying a quota
- get_gpfs_fset_id for mapping a path to a fileset id
