| Commit message (Collapse) | Author | Age | Files | Lines |
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This patch introduces multithreaded filesystem scrubber based
on throttling option configured for a particular volume. The
implementation "logically" breaks scanning and scrubbing with
the number of scrubber threads auto-configured depending upon
the throttle configuration. Scanning (crawling) is left single
threaded (per brick) with entries scrubbed in bulk. On reaching
this "bulk" watermark, scanner waits until entries are scrubbed.
Bricks for a particular volume have a set of thread(s) assigned
for scrubbing, with entries for each brick scrubbed in a round
robin fashion to avoid scrub "stalls" when a brick (out of N
bricks) is under active scrubbing.
This mechanism helps us implement "pause/resume" with ease: all
one need to do is to cleanup scrubber threads and let the main
scanner thread "wait" untill scrubbing is resumed (where the
scrubber thread(s) are spawned again), therefore continuing
where we left off (unless we restart the deamons, where crawl
initiates from root directory again, but I guess that's OK).
[
NOTE:
Throttling is optional for the signer daemon, without which
it runs full throttle. However, passing "-DBR_RATE_LIMIT_SIGNER"
predefined in CFLAGS enables CPU throttling (during checksum
calculation) thereby avoiding high CPU usage.
]
Subsequent patches would introduce CPU throttling during hash
calculation for scrubber.
Change-Id: I5701dd6cd4dff27ca3144ac5e3798a2216b39d4f
BUG: 1207020
Signed-off-by: Venky Shankar <vshankar@redhat.com>
Reviewed-on: http://review.gluster.org/10511
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>
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Logic for adding the 'glusterd_brickinfo->group' member and using it to
find the brick positon has been taken from http://review.gluster.org/#/c/9919.
Thanks to Jeff Darcy for that.
This patch is a part of the arbiter logic implementation for 3 way AFR
details of which can be found at http://review.gluster.org/#/c/9656/
Change-Id: Idbfe4f29ee8e098e0102def8f38b32314316b188
BUG: 1199985
Signed-off-by: Ravishankar N <ravishankar@redhat.com>
Reviewed-on: http://review.gluster.org/10257
Tested-by: NetBSD Build System
Reviewed-by: Atin Mukherjee <amukherj@redhat.com>
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
Reviewed-by: Krishnan Parthasarathi <kparthas@redhat.com>
Tested-by: Krishnan Parthasarathi <kparthas@redhat.com>
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This patch imports timer-wheel[1] algorithm from the linux
kernel (~/kernel/time/timer.c) with some modifications.
Timer-wheel is an efficent way to track millions of timers for
expiry. This is a variant of the simple but RAM heavy approach
of having a list (timer bucket) for every future second.
Timer-wheel categorizes every future second into a logarithmic
array of arrays. This is done by splitting the 32 bit "timeout"
value into fixed "sliced" bits, thereby each category has a
fixed size array to which buckets are assigned.
A classic split would be 8+6+6+6 (used in this patch) which
results in 256+64+64+64 == 512 buckets. Therefore, the entire
32 bit futuristic timeouts have been mapped into 512 buckets.
[
NOTE:
There are other possible splits, such as "8+8+8+8", but
this patch sticks to the widely used and tested default.
]
Therfore, the first category "holds" timers whose expiry range
is between 1..256, the next cateogry holds 257..16384, third
category 16385..1048576 and so on. When timers are added,
unless it's in the first category, timers with different
timeouts could end up in the same bucket. This means that the
timers are "partially sorted" -- sorted in their highest bits.
The expiry code walks the first array of buckets and exprires
any pending timers (1..256). Next, at time value 257, timers
in the first bucket of the second array is "cascaded" onto
the first category and timers are placed into respective
buckets according to the thier timeout values. Cascading
"brings down" the timers timeout to the coorect bucket
of their respective category. Therefore, timers are sorted
by their highest bits of the timeout value and then by the
lower bits too.
[1] https://lwn.net/Articles/152436/
Change-Id: I1219abf69290961ae9a3d483e11c107c5f49c4e3
BUG: 1170075
Signed-off-by: Venky Shankar <vshankar@redhat.com>
Reviewed-on: http://review.gluster.org/9707
Reviewed-by: Vijay Bellur <vbellur@redhat.com>
Tested-by: Vijay Bellur <vbellur@redhat.com>
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This patch introduces rotational buffers aiming at the classic
multiple producer and multiple consumer problem. A fixed set
of buffer list is allocated during initialization, where each
list consist of a list of buffers. Each buffer is an iovec
pointing to a memory region of fixed allocation size. Multiple
producers write data to these buffers. A buffer list starts with
a single buffer (iovec) and allocates more when required (although
this can be preallocatd in multiples of k).
rot-buffs allow multiple producers to write data parallely with
a bit of extra cost of taking locks. Therefore, it's much suited
for large writes. Multiple producers are allowed to write in the
buffer parallely by "reserving" write space for selected number
of bytes and returning pointer to the start of the reserved area.
The write size is selected by the producer before it starts the
write (which is often known). Therefore, the write itself need not
be serialized -- just the space reservation needs to be done safely.
The other part is when a consumer kicks in to consume what has
been produced. At this point, a buffer list switch is performed.
The "current" buffer list pointer is safely pointed to the next
available buffer list. New writes are now directed to the just
switched buffer list (the old buffer list is now considered out
of rotation). Note that the old buffer still may have producers
in progress (pending writes), so the consumer has to wait till
the writers are drained. Currently this is the slow path for
producers (write completion) and needs to be improved.
Currently, there is special handling for cases where the number
of consumers match (or exceed) the number of producers, which
could result in writer starvation. In this scenario, when a
consumers requests a buffer list for consumption, a check is
performed for writer starvation and consumption is denied
until at least another buffer list is ready of the producer
for writes, i.e., one (or more) consumer(s) completed, thereby
putting the buffer list back in rotation.
[
NOTE:
I've not performance tested this producer-consumer model
yet. It's being used in changelog for event notification.
The list of buffers (iovecs) are directly passed to RPC
layer.
]
Change-Id: I88d235522b05ab82509aba861374a2312bff57f2
BUG: 1170075
Signed-off-by: Venky Shankar <vshankar@redhat.com>
Reviewed-on: http://review.gluster.org/9706
Tested-by: Vijay Bellur <vbellur@redhat.com>
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This is the initial patch for the Snapshot feature. Current patch
includes following features:
* Snapshot create
* Snapshot delete
* Snapshot restore
* Snapshot list
* Snapshot info
* Snapshot status
* Snapshot config
Change-Id: I2f46920c0d61c515f6a60e0f8b46fff886d9f6a9
BUG: 1061685
Signed-off-by: shishir gowda <sgowda@redhat.com>
Signed-off-by: Sachin Pandit <spandit@redhat.com>
Signed-off-by: Vijaikumar M <vmallika@redhat.com>
Signed-off-by: Raghavendra Bhat <raghavendra@redhat.com>
Signed-off-by: Rajesh Joseph <rjoseph@redhat.com>
Signed-off-by: Joseph Fernandes <josferna@redhat.com>
Signed-off-by: Avra Sengupta <asengupt@redhat.com>
Reviewed-on: http://review.gluster.org/7128
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>
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Currently volinfo is added at the end of the list while creating a volume.
On gluster restart, readdir will not provide the ordered list and the data
is populated in the same order as readdir.
Solution is to insert the volinfo to the list in an order
Change-Id: I1716ac6abbd7dd301a7125425fc413c6833f7a48
BUG: 1039912
Signed-off-by: Vijaykumar M <vmallika@redhat.com>
Reviewed-on: http://review.gluster.org/6472
Reviewed-by: Atin Mukherjee <amukherj@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Kaushal M <kaushal@redhat.com>
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Duplicate request cache provides a mechanism for detecting
duplicate rpc requests from clients. DRC caches replies
and on duplicate requests, sends the cached reply instead of
re-processing the request.
Change-Id: I3d62a6c4aa86c92bf61f1038ca62a1a46bf1c303
BUG: 847624
Signed-off-by: Rajesh Amaravathi <rajesh@redhat.com>
Reviewed-on: http://review.gluster.org/4049
Reviewed-by: Rajesh Joseph <rjoseph@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>
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Note that the license was not changed in any of the following:
.../argp-standalone/...
.../booster/...
.../cli/...
.../contrib/...
.../extras/...
.../glusterfsd/...
.../glusterfs-hadoop/...
.../mod_clusterfs/...
.../scheduler/...
.../swift/...
The license was not changed in any of the non-building xlators. The
license was not changed in any of the xlators that seemed — to me — to
be clearly server-side only, e.g. protocol/server
Note too that copyright was changed along with the license; I did
not change the copyright in files where the license did not change.
If you find any errors or ommissions please don't hesitate to let me know.
The complete list of files with the license change is:
libglusterfs/src/byte-order.h
libglusterfs/src/call-stub.c
libglusterfs/src/call-stub.h
libglusterfs/src/checksum.c
libglusterfs/src/checksum.h
libglusterfs/src/circ-buff.c
libglusterfs/src/circ-buff.h
libglusterfs/src/common-utils.c
libglusterfs/src/common-utils.h
libglusterfs/src/compat-errno.c
libglusterfs/src/compat-errno.h
libglusterfs/src/compat.c
libglusterfs/src/compat.h
libglusterfs/src/daemon.c
libglusterfs/src/daemon.h
libglusterfs/src/defaults.c
libglusterfs/src/defaults.h
libglusterfs/src/dict.c
libglusterfs/src/dict.h
libglusterfs/src/event-history.c
libglusterfs/src/event-history.h
libglusterfs/src/event.c
libglusterfs/src/event.h
libglusterfs/src/fd-lk.c
libglusterfs/src/fd-lk.h
libglusterfs/src/fd.c
libglusterfs/src/fd.h
libglusterfs/src/gf-dirent.c
libglusterfs/src/gf-dirent.h
libglusterfs/src/globals.c
libglusterfs/src/globals.h
libglusterfs/src/glusterfs.h
libglusterfs/src/graph-print.c
libglusterfs/src/graph-utils.h
libglusterfs/src/graph.c
libglusterfs/src/hashfn.c
libglusterfs/src/hashfn.h
libglusterfs/src/iatt.h
libglusterfs/src/inode.c
libglusterfs/src/inode.h
libglusterfs/src/iobuf.c
libglusterfs/src/iobuf.h
libglusterfs/src/latency.c
libglusterfs/src/latency.h
libglusterfs/src/list.h
libglusterfs/src/lkowner.h
libglusterfs/src/locking.h
libglusterfs/src/logging.c
libglusterfs/src/logging.h
libglusterfs/src/mem-pool.c
libglusterfs/src/mem-pool.h
libglusterfs/src/mem-types.h
libglusterfs/src/options.c
libglusterfs/src/options.h
libglusterfs/src/rbthash.c
libglusterfs/src/rbthash.h
libglusterfs/src/run.c
libglusterfs/src/run.h
libglusterfs/src/scheduler.c
libglusterfs/src/scheduler.h
libglusterfs/src/stack.c
libglusterfs/src/stack.h
libglusterfs/src/statedump.c
libglusterfs/src/statedump.h
libglusterfs/src/syncop.c
libglusterfs/src/syncop.h
libglusterfs/src/syscall.c
libglusterfs/src/syscall.h
libglusterfs/src/timer.c
libglusterfs/src/timer.h
libglusterfs/src/trie.c
libglusterfs/src/trie.h
libglusterfs/src/xlator.c
libglusterfs/src/xlator.h
libglusterfsclient/src/libglusterfsclient-dentry.c
libglusterfsclient/src/libglusterfsclient-internals.h
libglusterfsclient/src/libglusterfsclient.c
libglusterfsclient/src/libglusterfsclient.h
rpc/rpc-lib/src/auth-glusterfs.c
rpc/rpc-lib/src/auth-null.c
rpc/rpc-lib/src/auth-unix.c
rpc/rpc-lib/src/protocol-common.h
rpc/rpc-lib/src/rpc-clnt.c
rpc/rpc-lib/src/rpc-clnt.h
rpc/rpc-lib/src/rpc-transport.c
rpc/rpc-lib/src/rpc-transport.h
rpc/rpc-lib/src/rpcsvc-auth.c
rpc/rpc-lib/src/rpcsvc-common.h
rpc/rpc-lib/src/rpcsvc.c
rpc/rpc-lib/src/rpcsvc.h
rpc/rpc-lib/src/xdr-common.h
rpc/rpc-lib/src/xdr-rpc.c
rpc/rpc-lib/src/xdr-rpc.h
rpc/rpc-lib/src/xdr-rpcclnt.c
rpc/rpc-lib/src/xdr-rpcclnt.h
rpc/rpc-transport/rdma/src/name.c
rpc/rpc-transport/rdma/src/name.h
rpc/rpc-transport/rdma/src/rdma.c
rpc/rpc-transport/rdma/src/rdma.h
rpc/rpc-transport/socket/src/name.c
rpc/rpc-transport/socket/src/name.h
rpc/rpc-transport/socket/src/socket.c
rpc/rpc-transport/socket/src/socket.h
xlators/cluster/afr/src/afr-common.c
xlators/cluster/afr/src/afr-dir-read.c
xlators/cluster/afr/src/afr-dir-read.h
xlators/cluster/afr/src/afr-dir-write.c
xlators/cluster/afr/src/afr-dir-write.h
xlators/cluster/afr/src/afr-inode-read.c
xlators/cluster/afr/src/afr-inode-read.h
xlators/cluster/afr/src/afr-inode-write.c
xlators/cluster/afr/src/afr-inode-write.h
xlators/cluster/afr/src/afr-lk-common.c
xlators/cluster/afr/src/afr-mem-types.h
xlators/cluster/afr/src/afr-open.c
xlators/cluster/afr/src/afr-self-heal-algorithm.c
xlators/cluster/afr/src/afr-self-heal-algorithm.h
xlators/cluster/afr/src/afr-self-heal-common.c
xlators/cluster/afr/src/afr-self-heal-common.h
xlators/cluster/afr/src/afr-self-heal-data.c
xlators/cluster/afr/src/afr-self-heal-entry.c
xlators/cluster/afr/src/afr-self-heal-metadata.c
xlators/cluster/afr/src/afr-self-heal.h
xlators/cluster/afr/src/afr-self-heald.c
xlators/cluster/afr/src/afr-self-heald.h
xlators/cluster/afr/src/afr-transaction.c
xlators/cluster/afr/src/afr-transaction.h
xlators/cluster/afr/src/afr.c
xlators/cluster/afr/src/afr.h
xlators/cluster/afr/src/pump.c
xlators/cluster/afr/src/pump.h
xlators/cluster/dht/src/dht-common.c
xlators/cluster/dht/src/dht-common.h
xlators/cluster/dht/src/dht-diskusage.c
xlators/cluster/dht/src/dht-hashfn.c
xlators/cluster/dht/src/dht-helper.c
xlators/cluster/dht/src/dht-inode-read.c
xlators/cluster/dht/src/dht-inode-write.c
xlators/cluster/dht/src/dht-layout.c
xlators/cluster/dht/src/dht-linkfile.c
xlators/cluster/dht/src/dht-mem-types.h
xlators/cluster/dht/src/dht-rebalance.c
xlators/cluster/dht/src/dht-rename.c
xlators/cluster/dht/src/dht-selfheal.c
xlators/cluster/dht/src/dht.c
xlators/cluster/dht/src/nufa.c
xlators/cluster/dht/src/switch.c
xlators/cluster/stripe/src/stripe-helpers.c
xlators/cluster/stripe/src/stripe-mem-types.h
xlators/cluster/stripe/src/stripe.c
xlators/cluster/stripe/src/stripe.h
xlators/features/index/src/index-mem-types.h ¹
xlators/features/index/src/index.c ¹
xlators/features/index/src/index.h ¹
xlators/performance/io-cache/src/io-cache.c
xlators/performance/io-cache/src/io-cache.h
xlators/performance/io-cache/src/ioc-inode.c
xlators/performance/io-cache/src/ioc-mem-types.h
xlators/performance/io-cache/src/page.c
xlators/performance/io-threads/src/io-threads.c
xlators/performance/io-threads/src/io-threads.h
xlators/performance/io-threads/src/iot-mem-types.h
xlators/performance/md-cache/src/md-cache-mem-types.h
xlators/performance/md-cache/src/md-cache.c
xlators/performance/quick-read/src/quick-read-mem-types.h
xlators/performance/quick-read/src/quick-read.c
xlators/performance/quick-read/src/quick-read.h
xlators/performance/read-ahead/src/page.c
xlators/performance/read-ahead/src/read-ahead-mem-types.h
xlators/performance/read-ahead/src/read-ahead.c
xlators/performance/read-ahead/src/read-ahead.h
xlators/performance/symlink-cache/src/symlink-cache.c
xlators/performance/write-behind/src/write-behind-mem-types.h
xlators/performance/write-behind/src/write-behind.c
xlators/protocol/auth/addr/src/addr.c ¹
xlators/protocol/auth/login/src/login.c ¹
xlators/protocol/client/src/client-callback.c
xlators/protocol/client/src/client-handshake.c
xlators/protocol/client/src/client-helpers.c
xlators/protocol/client/src/client-lk.c
xlators/protocol/client/src/client-mem-types.h
xlators/protocol/client/src/client.c
xlators/protocol/client/src/client.h
xlators/protocol/client/src/client3_1-fops.c
¹ Copyright only, license reverted to original
Change-Id: If560e826c61b6b26f8b9af7bed6e4bcbaeba31a8
BUG: 820551
Signed-off-by: Kaleb KEITHLEY <kkeithle@redhat.com>
Reviewed-on: http://review.gluster.com/3304
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vijay@gluster.com>
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Change-Id: I2d10f2be44f518f496427f257988f1858e888084
BUG: 3348
Reviewed-on: http://review.gluster.com/200
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@gluster.com>
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Change-Id: I3914467611e573cccee0d22df93920cf1b2eb79f
BUG: 3348
Reviewed-on: http://review.gluster.com/182
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@gluster.com>
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To append to end of list, as compared to list_splice_init which prepends.
Signed-off-by: Shehjar Tikoo <shehjart@gluster.com>
Signed-off-by: Vijay Bellur <vijay@dev.gluster.com>
BUG: 2491 ()
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=2491
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* whitespace cleanup (M-x whitespace-cleanup)
* indentation fixes (M-x indent-region)
* replaced tab with spaces (M-x untabify)
Signed-off-by: Amar Tumballi <amar@gluster.com>
Signed-off-by: Vijay Bellur <vijay@dev.gluster.com>
BUG: 2346 (Log message enhancements in GlusterFS - phase 1)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=2346
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Signed-off-by: Vijay Bellur <vijay@gluster.com>
Signed-off-by: Vijay Bellur <vijay@dev.gluster.com>
BUG: 971 (dynamic volume management)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=971
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Signed-off-by: Pranith Kumar K <pranithk@gluster.com>
Signed-off-by: Vijay Bellur <vijay@dev.gluster.com>
BUG: 1388 ()
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=1388
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Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
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updated copyright header to include 2009.
Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
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