New registry value "BlockSize" can be used to specify an alternative
block size. The default is 4K. A larger blocksize will be needed if
you want to support a 6TB cache.
Also extend the service startup timeout hint to two minutes to give
the AFS client service more time to startup successfully when the
cache is really large.
(1) fixes a bug that could cause a 'host' structure to not be removed
from the global host list if the 'host' did not possess an interface
list. This would happen with older AFS clients that do not support the
WhoAreYou family of RPCs. Windows clients older than 1.3.80 and old
Transarc UNIX clients.
(2) fixes a bug which could result in ViceLog being called with an
uninitialized 'hoststr' buffer as a parameter.
(3) ensures that only addresses known to belong to the 'host' are
added to the address hash table. The list of addresses provided by
the client are stored as alternates and are only used when searching
for a client that is no longer accessible on the primary address.
These addresses are not stored in the address hash table within
initInterfaceAddr_r().
The addresses provided by the client should not be added to the hash
table because they have not been verified as belonging to the 'host'
that provided them. The contents of the list may in fact be completely
unreliable. Consider the existing UNIX clients that generate the list
at startup and never alter it even after the client has migrated to a
different network. If two client's both claim the same address,
lookups by address may fail to find the correct one.
a. The client list might contain private address ranges which
are likely to be re-used by many clients allocated addresses
by a NAT.
b. The client list will not include any public addresses that
are hidden by a NAT.
c. Private address ranges that are exposed to the server will
be obtained from the rx connections that use them.
d. Lists provided by the client are not necessarily truthful.
Many existing clients (UNIX) do not refresh the IP address
list as the actual assigned addresses change. The end result
is that they report the initial address list for the lifetime
of the process. In other words, a client can report addresses
that they are in fact not using. Adding these addresses to
the host interface list without verification is not only
pointless, it is downright dangerous.
e. The reported addresses do not include port numbers and
guessing that the port number is 7001 does not work when
port mapping devices such as NATs or some VPNs are in
use.
(4) improves logging to ensure that all references to a 'host' structure
report both a memory address and the IP address/port. this will avoid
confusion *if* more than one 'host' structure is assigned the same
primary address.
(5) logs the UUID along with the client addresses when initializing the
host's interface list. (level 125)
(6) saves memory by using a smaller structure for the UUID hash table
MultiProbeAlternateAddress_r badly indexes the list of interfaces for
clients with multiple IP interfaces, resulting in peers with IP
address 0 port 0 to be created. This in turn results in rxi_sendmsg
errors (on systems where caught early, as on Linux, on others it may
pass unnoticed).
Add a new fs newalias man page. Add -help to the synopsis and options of
the other new man pages. Add additional missing links in the fs man page.
Fix some wording in the CellAlias man page.
Complete the documentation of the afsd flags and update a few things like
-settime and -nosettime. Add man pages for fs setcrypt, fs getcrypt, and
CellAlias. Based on work by Jason Edgecombe and then extensively edited,
so any errors I probably introduced.
The windows cache manager has suffered from poor performance as a result
of Create, Rename, and Delete operations because they invalidate the
contents of the directory pages in the cache thereby forcing them to be
reloaded from the file server. As the directory size increases, the clock
time necessary to perform the reload increases.
This delta adds support for parsing and updating the AFS3 directory buffers
to cm_dir.c. It then uses that functionality to perform local updates to
the directory buffers whenever the following conditions are met:
1. the data version on the directory as a result of the change
was incremented by one.
2. all of the directory buffers required for the update are in
the cache.
If these conditions are not met, the directory is reloaded from the file
server.
The windows cache manager has suffered from poor performance as a result
of Create, Rename, and Delete operations because they invalidate the
contents of the directory pages in the cache thereby forcing them to be
reloaded from the file server. As the directory size increases, the clock
time necessary to perform the reload increases.
This delta adds support for parsing and updating the AFS3 directory buffers
to cm_dir.c. It then uses that functionality to perform local updates to
the directory buffers whenever the following conditions are met:
1. the data version on the directory as a result of the change
was incremented by one.
2. all of the directory buffers required for the update are in
the cache.
If these conditions are not met, the directory is reloaded from the file
server.
if all of the servers are down when a callback is due to expire
delay the expiration until at least one server is available.
this prevents some applications that are running when the CM
is off the network from failing if their pages are swapped out.
Mention aklog and kinit in klog's man page, add -dynroot to the afsd man
page, and mention that -skipauth tells uss not to create any Kerberos
principal and this has to be done separately.
This delta adds an interface to an optional volume status handler.
The handler (if provided) receives status updates when volumes
change state between online, offline, busy, and alldown.
enable afsdb records for get cellinfo lookup outside of afsd_service.exe
====================
This delta was composed from multiple commits as part of the CVS->Git migration.
The checkin message with each commit was inconsistent.
The following are the additional commit messages.
====================
do not perform afsdb lookup for Freelance.Local.Root cell
The UNIX client does not follow mount points or symlinks when evaluating
ioctl paths during commands such as "fs examine". The Windows client did
which was annoying when you wanted to know the FID of a mount point that
was not properly being evaluated.
Since the library creates its own background thread, the library must
load its own reference to itself to prevent the library from being
unloaded behind its back.
remove the conditionalized code used to give up callbacks in response
to stat cache recycling due to performance impacts described in the
commit for DELTA windows-give-up-callbacks-20070627
This large patch adds support for giving up callbacks in response to three
events:
1. power management suspend
2. power management shutdown
3. stat cache object recycling
The third item is submitted as a condition compilation if GIVE_UP_CALLBACKS
is defined. Properly handing callback give ups and the associated race
conditions with revokes and fetch status requests requires a great deal of
over head. The first attempt used one GiveUpCallBacks RPC for each callback
that was being dropped as the stat cache object was recycled. This resulted
in a 27% performance drop in the MIT stress test. The code that is being
committed maintains a callback give up list on each server object. The
callback is added to the list as the callbacks are dropped and then they
are sent to the server in bulk by the background daemon thread if the
server is known to be UP after a ping. Logic is added to the
EndCallbackRequest and CallbackRevoke operations to ensure that race
conditions are addressed. With all of this, there is a 17% performance drop
in the MIT stress test.
As a result, it is my conclusion that the client side costs associated with
optimizing the load on the server are simply too high. I am committing this
code to ensure that it is not lost. I will remove this support in the next
patch while leaving the support for giving up all callbacks in response
to suspend and shutdown events.
====================
This delta was composed from multiple commits as part of the CVS->Git migration.
The checkin message with each commit was inconsistent.
The following are the additional commit messages.
====================
projects / packages / o / openafs.git / log