| Commit message (Collapse) | Author | Age | Files | Lines |
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patch http://patches.gluster.com/patch/1319/ breaks when no priority
is mentioned in the config. the patch makes ioc_get_priority() return
1 as the value when no priority is given, but ioc_get_priority_list()
was still returning 0 as the max_pri (maximum priority) which would
result in lru list heads not getting initialized
Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
BUG: 261 (support for disabling caching of certain files)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=261
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Hello all,
here is a small feature patch. Its intention is to give the user more control
over the files performance/io-cache really caches. If the user knows exactly
which files should be cached and which shouldn't there is currently no way to
tell glusterfs _not_ to cache certain pattern. This patch allows you to
disable caching by setting the priority of a pattern to "0". If you do not
give any priority option it works just like before and caches everything.
Honestly I am not totally sure that disabling caching works the way we did it,
please comment.
Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
BUG: 261 (support for disabling caching of certain files)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=261
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Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
BUG: 238 (Backport quick-read to 2.0 release)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=238
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Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
BUG: 257 (Backport stat-prefetch to 2.0)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=257
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Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
BUG: 243 (Hold locks when accessing members of wb_file_t.)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=243
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in the next immediate writes from application.
Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
BUG: 242 (If any of the writes fail, write-behind should not wait till the fd is closed for reporting errors)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=242
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Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
BUG: 196 (write-behind window size getting set to 0.)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=196
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Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
BUG: 196 (write-behind window size getting set to 0.)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=196
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Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
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open() & create() calls should reset frame->local to NULL.
bz# 104
Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
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Write calls should not be pushed to background only when the
mandatory locking is enabled, in all other cases (eg: O_SYNC,
O_DIRECT etc), we should not be 'caching' any data, but the
calls can be pushed to the background
Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
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their context.
- since a successful open/create will _always_ set a pointer to ra_file_t in
context of fd, this fix makes sense.
- an example of operations on bad fd can be afr sending read on the child
which was down during open.
Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
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memory allocation for ra_file in open/create
Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
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Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
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1. A page will be put on the inode waitq if the 'freshness' has to be verified with an fstat()
2. while the fstat is in transit, other calls (like lookup) can update ioc_inode->tv, resetting the freshness (page still on inode waitq)
3. Another read request on the same page, after the updated freshness, will wake up the page frames neglecting the fact that the page is also waiting on the inode (waiting for the fstat completion)
4. once the page's frames are woken, the page becomes elegible for purging and can get destroyed for various reasons, leaving a destroyed page pointer in the inode's waitq
5. fstat returns and hits the destroyed page pointer causing a crash
The fix is to all together disable cache hits when any page of the same inode is under validation. The otherwise cache hit will now be subjected to the ongoing validation by getting queued to the inode waitq.
Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
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- sc_readlink wrongly returned strlen (link) + 1 when link was present in
cache.
- this fixes rt #828. Since fuse_readlink_cbk does link[op_ret] = '\0', there
was a memory corruption.
Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
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This patch cleans up io-threads behaviour regarding the
range values that can be specified for min-threads
and max-threads. THe major change is that the min threads
have been reduced to 2 to signify that io-threads needs minimum
two threads for its operation, while keeping the default number of
threads at 16. The idea is to decouple the default thread count
from the minimum thread count.
Note to Avati:
This applies over Raghu's indentation and logging take-3 patch.
Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
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Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
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Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
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Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
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Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
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-- added some indentation fixes
Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
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Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
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Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
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Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
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Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
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Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
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Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
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Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
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Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
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Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
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Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
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Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
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This patch brings in following changes:
1. make aggregate-size as non-configurable and make it to be equal to
maximum iobuf size.
2. best effort to write data in chunks of length as close to aggregate-size
as possible but not greater than aggregate-size, since aggregate-size is
made equal to Maximum size of iobuf.
Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
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- make sure lines are not greater than 80 characters in length
Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
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own configurations
Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
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We do not need to explicitly set the stack size to its default
value.
Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
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Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
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Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
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Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
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Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
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Going by the memory usage for each threads, it is prudent to
have lower number of threads by default and let users who understand
the memory consequences increase the thread count for themselves.
Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
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The default stack size on Linux is around 8 MiB for each
thread. This is clearly too high for our purpose. This commit reduces
the stack size down to 1 MiB.
Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
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This is being done for the same reason as the
previous refactoring for ordered threads.
Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
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This patch re-factors the exit path of an ordered worker
on a time-out. Earlier we're checking for exit permission
in such a way that required us to release and acquire
the worker lock a second time in the worker loop opening
a window wherein a new request could've been appended to the
request queue.
This patch makes the decision to exit while still holding on to the
worker lock.
Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
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Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
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This patch adds sanity check for the ordered worker thread index
returned from the inode's context. If the index is corrupted we
STACK_UNWIND with ECANCELED.
Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
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