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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.
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LICENSE IPL10
Two recent changes to the AFS/Kerberos landscape have been causing
problems for aklog and related modules. First, the support for multiple
local realms for the cell has broken the pts auto-registration code
when the realm used for the token acquisition does not match the
realm belonging to the selected vldb server. Second, Kerberos referrals
prevents detection of the realm of the vldb server.
This commit adds a new method of searching for the afs service principal.
The first attempt is for afs/<cell>@<CLIENT-REALM>. If found, the
<CLIENT-REALM> is used as the realm of the cell.
The patch adds error handling for KRB5_ERR_HOST_REALM_UNKNOWN which is
returned when krb5_get_host_realm() can't determine the realm.
Duplicate queries are also avoided and copy_realm_of_ticket() is
properly employed.
1. return CM_ERROR_NOSUCHFILE when attempting to remove a symlink or
mount point that does not exist
2. When adding a new symlink or mountpoint, be sure to increment the
number of local mount points
3. When re-initializing the fake root.cell the unique value is always
one, not two. Use cm_FidCmp() to compare fids. The use of the
value two prevented the invalidation of existing values because all
of the directory entries are created with the unique set to one.
because of when fds are NULL'd in file_table this should work except when one process has the same file open for read and for write in different FDs; otherwise,
the last write fd to close collects the error.
Windows Error Reports indicate that sometimes the krb5_cc_default()
call must be failing because krb5_cc_principal is being called with
a NULL ccache value. Perform error checking and cleanup that was
not previously implemented.
Protect against invalid data being passed into ParseAcl and
corrupting the stack. This affects both fs.exe and the explorer
shell extension.
Windows Error Reporting in recent weeks has begun to report several
instances of stack corruption in the explorer shell extension from
Denmark and Germany.
this will dump the current dafs vlru state on kill -XCPU (just as we dump other
fileserver state)
that state is
VLRU is a garbage collection facility which automatically offlines
volumes in the background. The purpose of this facility is to
proactively offline infrequently used volumes to improve shutdown and
salvage times. The process of offlining a volume from the "attached"
state to the "pre-attached" state is called soft detachment.
VLRU works in a manner similar to a generational garbage collector.
There are five queues on which volumes can reside: new, intermediate,
old, held, and candidate:
held:
queue for volumes which are administratively barred from VLRU activity
candidate:
queue for volumes which have not been accessed recently, and are thus
candidates for soft detachment
new, intermediate, old:
generational queues for active volumes; state transitions controlled by
inactivity timers.
State transition timeouts are as follows:
candidate->new activity present
new->candidate (1*vlruthresh) minutes since last transition; no activity
new->mid (2*vlruthresh) minutes since last transition; activity
present
mid->old (4*vlruthresh) minutes since last transition; activity
present
old->mid (2*vlruthresh) minutes since last transition; no activity
mid->new (1*vlruthresh) minutes since last transition; no activity
The pts program has a command 'source' to read commands from
a file. In the interactive "shell" mode, this command works,
reading and executing commands until the end of the file and
then returning to the command shell.
This command is valid for use as a command line option, but
does not work. It requires a valid filename as an argument,
but does not process the file, instead just dropping the user
into the interactive mode.
When given as a command line option, pts source SHOULD read
the file, execute the commands and then exit, according to
the documentation. It does not currently do this and should
be fixed.
The cm_scache structure has included a reference to the associated cm_volume_t,
volp. By doing so the reference count on the cm_volume_t objects never hits
zero unless all of the cm_scache_t objects in that volume have been reused.
This prevents cm_volume object recycling.
This commit removes the hard reference and instead adds a function
cm_GetVolumeByFID which obtains a reference to the cm_volume that matches
the cm_scache fid value as needed.
A new "Volumes" registry value is added to permit explicit specification
of the number of volume objects to be allocated.
Update the fileserver documentation for demand-attach and add documentation
of other missing options and notes where some options are only applicable
with particular builds.
Introduce a new set of macros that can be used to permit either mutex
based protection or Interlocked operation protection increments,
decrements, or additions.
adapted from marc dionne's patch, but works more directly like the darwin port,
further, i'm guessing iget_locked will go away evewntually. maybe this is
too conservative?
If we want to enforce the open for read flag in smb_ReadData we must
also check for execute access. We map execute access to read access
because AFS doesn't have a separate permission for that.
change the RxMaxMtu setting to 0 to restore default
behavior (aka performance). The Cisco VPN 5.0.01.0600
client no longer requires a reduced mtu size for compatibility
with AFS.
syscfg_GetIFInfo() obtains the current list of IP addresses.
Its a really expensive operation. Call the function once
and cache the data until the next IP address change instead
of calling it everytime we receive a WhoAreYou or construct a
new server object. Adds a new global rw lock, cm_syscfgLock
This is a first cut at a cache manager statistics monitor
that can be used to determine the necessary cache parameters
to support the working set.
Off by default the performance package can be activated
by setting "daemonPerformanceTuningInterval" in the service
Parameters key. As with the other daemon interval values
the unit is in seconds.
At service start and each succeeding interval the cache
manager will write statistics to %TEMP%\afsd_performance.txt
showing the relative usage of cm_scache_t, cm_volume_t and
cm_buf_t objects. The FID statistics keep track of all FIDs
seen by the cache manager during the service session whether
or not they are backed by any live object in the cache.
These statistics are not stored in the cache file.
Convert cm_conn_t reference counts to use Interlocked operations.
This permits several cm_serverLock holds to be converted to read
locks.
Add string translation for VL errors to cm_Analyze().
Permit RXKAD errors other than RXKADEXPIRED to be treated as
non-fatal. Instead immediately retry an alternate server if
there is one. This will permit the client to continue to
access replicated data from an alternate site if one of the
file servers is misconfigured.
Prior to looking up a volume in the vldb the cm_volume_t
object is constructed. If the response is VL_NOENT the
cm_volume_t object should be removed and place at the
head of the recycling list so that we do not recycle
something we might actually care about.
Convert more cm_volumeLock holds to read locks now
that we are using Interlocked operations to manipulate
the reference counts.
If an application opens a file for read only and then attempts to
write to it, we would attempt to release an scp mutex without having
obtained either the scp or the mutex within smb_WriteData
There was no check in smb_ReadData to ensure that the file was opened
for reading. Add one.
on VSALVAGE the client will correctly resort its list and fail over to
other replicas, but only for RO where there is more than one replica,
obviously; since in dafs we expect to only delay on salvage this is the most
useful course of action
(1) an attempt to make better use of bandwidth from the BkgDaemon threads
by preventing the thread from blocking on a vnode that is already
storing data in another thread
(2) prevents CM_SCACHEFLAG_ASYNCSTORE from being reset on a write failure.
(3) fixes cm_EvaluateSysName to avoid accessing uninitialized memory
(4) prevents a lock leak if the symlink's mountpointstring is too long.
(This could never actually happen but better to correct the code.)
projects / packages / o / openafs.git / log