Replace replication_one_per_device by custom count

Code Issues Proposed changes

This commit replaces boolean replication_one_per_device by an integer
replication_concurrency_per_device. The new configuration parameter is
passed to utils.lock_path() which now accept as an argument a limit for
the number of locks that can be acquired for a specific path.
Instead of trying to lock path/.lock, utils.lock_path() now tries to lock
files path/.lock-X, where X is in the range (0, N), N being the limit for
the number of locks allowed for the path. The default value of limit is
set to 1.
Change-Id: I3c3193344c7a57a8a4fc7932d1b10e702efd3572

This commit is contained in:

Romain LE DISEZ

2016年10月26日 10:53:46 +02:00

committed by Alistair Coles

parent 49dd146068

commit e199192cae

11 changed files with 351 additions and 150 deletions

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11
doc/manpages/object-server.conf.5

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@@ -225,11 +225,12 @@ should not specify any value for "replication_server".

Set to restrict the number of concurrent incoming SSYNC requests

Set to 0 for unlimited (the default is 4). Note that SSYNC requests are only used

by the object reconstructor or the object replicator when configured to use ssync.

.IP "\fBreplication_one_per_device\fR"

Restricts incoming SSYNC requests to one per device,

replication_currency above allowing. This can help control I/O to each

device, but you may wish to set this to False to allow multiple SSYNC

requests (up to the above replication_concurrency setting) per device. The default is true.

.IP "\fBreplication_concurrency_per_device\fR"

Set to restrict the number of concurrent incoming SSYNC requests per device;

set to 0 for unlimited requests per devices. This can help control I/O to each

device. This does not override replication_concurrency described above, so you

may need to adjust both parameters depending on your hardware or network

capacity. Defaults to 1.

.IP "\fBreplication_lock_timeout\fR"

Number of seconds to wait for an existing replication device lock before

giving up. The default is 15.

Replace replication_one_per_device by custom count

11 doc/manpages/object-server.conf.5 Unescape Escape View File

11
doc/manpages/object-server.conf.5

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