* [ANN] cmogstored 1.5.0 - a mogstored alternative
@ 2015-11-21 2:58 5% Eric Wong
0 siblings, 0 replies; 3+ results
From: Eric Wong @ 2015-11-21 2:58 UTC (permalink / raw)
To: mogile, cmogstored-public
cmogstored is an alternative implementation of the "mogstored" storage
component of MogileFS. cmogstored is implemented in C and does not use
Perl at runtime. cmogstored is the only component you need to install
on a MogileFS storage node.
Changes since 1.4.3:
cmogstored 1.5.0 - vfork, systemd, 416 codes
A bunch of minor changes; most notable is systemd-style socket
activation support. This was easy-to-add since we've always had
socket activation support for nginx-style SIGUSR2 upgrades.
This places no link or runtime dependency on libsystemd, so the
LISTEN_FDS and LISTEN_PID environment variables may be used in other
init systems as well. While I have my own reservations about
systemd itself, I also strongly believe in using socket activation
to prevent downtime. Existing behavior with CMOGSTORED_FD
(used for SIGUSR2 upgrades) is now documented in the manpage and
will always supported.
We've also added vfork support for Linux systems, allowing
faster spawning of iostat if malloc is using too much memory.
Behavior changes:
Bad Range: headers return 416 responses in more cases for invalid
ranges (e.g. miscalculated ranges such as "1--1", while
completely wrong ones (lacking a "bytes=" prefix) are ignored
entirely as in nginx.
Bugfixes:
There are also some cleanups to avoid dying on OOM in more places
on weird systems which trigger OOM. More work on this is ongoing.
Also updates to the latest gnulib.git
commit 71d39c1644762745b94e9449c45bfd716a79a5eb
("autoupdate") along with a change which fixes a memory leak when
people build from cmogstored.git using gnulib
commit c6148bca89e9465fd6ba3a10d273ec4cb58c2dbe
or later ("mountlist: add me_mntroot field on Linux machines").
This memory leak did not affect any released tarballs of cmogstored.
Note, users building from git (as opposed to the tarball) will
need gnulib commit 41d1b6c42641a5b9e21486ca2074198ee7909bd7
("mountlist: add support for deallocating returned list entries")
or later (from July 2013).
There are also various documentation updates and our mailing
list is now readable over NNTP:
nntp://news.public-inbox.org/inbox.comp.file-systems.mogilefs.cmogstored
8 changes since v1.5.0rc0:
doc: document CMOGSTORED_FDS in the manpage
use vfork under Linux before execve
README: update contact information
misc doc updates
add cmogstored manpage to website
Makefile.am: distribute txt2pre in tarball
require newer gnulib for free_mount_entry support
cmogstored 1.5.0 - vfork, systemd, 416 codes
14 changes for 1.5.0rc0:
doc: use "builder" RubyGem to generate Atom feed
dev.c: fail gracefully on out-of-memory errors
do not die on OOM when for mgmt paths
HACKING: update URLs to reduce redirects
http: return 416 errors in more cases for bad Ranges
update .gitignores for latest autotools + gnulib
Rakefile: remove text-only part from the Atom feed
support systemd-style socket activation via environment
set TCP listener options on inherited sockets
doc: add example systemd config files
use free_mount_entry from gnulib instead of rolling our own
fix tmpdir dependency for slow Ruby tests
doc: publish examples directory to website
cmogstored 1.5.0rc1
http://bogomips.org/cmogstored/files/cmogstored-1.5.0.tar.gz
SHA-1: 0581285d7104ff418eed853cfbd94ab08bba4951
SHA-256: b83b954874ef201b6e6616ec3e60f517c6a01f7bc6eda1fbb3901558e34c1388
* homepage: http://bogomips.org/cmogstored/README
* git clone git://bogomips.org/cmogstored.git
* cgit: http://bogomips.org/cmogstored.git
* gitweb: http://repo.or.cz/w/cmogstored.git
* list: cmogstored-public@bogomips.org (subscription optional)
* archives: http://bogomips.org/cmogstored-public/
* nntp://news.public-inbox.org/inbox.comp.file-systems.mogilefs.cmogstored
--
EW
^ permalink raw reply [relevance 5%]
* Re: [ANN] cmogstored 1.5.0rc1 - a mogstored alternative
[not found] ` <CABJfL5iEz47zinp0rbOanrSN=1ubRFAa18wHaBnKSiTc+-Zpew@mail.gmail.com>
@ 2015-11-11 22:41 7% ` Eric Wong
0 siblings, 0 replies; 3+ results
From: Eric Wong @ 2015-11-11 22:41 UTC (permalink / raw)
To: mogile; +Cc: cmogstored-public
David Birdsong <david.birdsong -AT- gmail -DOT- com> wrote:
> I love the LISTEN_FDS option. Would it be possible to specify the FD
> integer as a command line parameter?
Possible, yes; but I'm not a fan of having multiple ways to accomplish
the same thing. I'd also want to avoid deviating too much from the Perl
mogstored command-line.
Unless somebody beats me to it, I also plan on implementing
LISTEN_FDS/LISTEN_PID support in mogilefsd and Perlbal/mogstored
I already did it in Perl a few weeks ago:
http://public-inbox.org/meta/20150920044320.2338-2-e%4080x24.org/t/
I consider the inherit() function too trivial to implement
any other way and can be public domain / CC0.
And also wrote about it in ruby-talk:
http://mid.gmane.org/20151030-inherit-fds-w-o-sd_listen_fds-in-pure@ruby
> circus from mozilla is a more modern version of supervisor and it offers
> socket management but provides the socket through a templated command line.
It can't set environment variables? I suppose you can use env(1) from
the command-line to launch cmogstored, as it always supported the
CMOGSTORED_FD environment. Unlike LISTEN_FDS, CMOGSTORED_FD
does not validate $$ == LISTEN_PID like LISTEN_FDS does. It
is comma-delimited, so it can use non-contiguous FDs:
env CMOGSTORED_FD=3,4 cmogstored ...
^ permalink raw reply [relevance 7%]
* [ANN] cmogstored 1.5.0rc1 - a mogstored alternative
@ 2015-11-11 22:05 21% Eric Wong
[not found] ` <CABJfL5iEz47zinp0rbOanrSN=1ubRFAa18wHaBnKSiTc+-Zpew@mail.gmail.com>
0 siblings, 1 reply; 3+ results
From: Eric Wong @ 2015-11-11 22:05 UTC (permalink / raw)
To: mogile; +Cc: cmogstored-public
cmogstored is an alternative implementation of the "mogstored" storage
component of MogileFS. cmogstored is implemented in C and does not use
Perl at runtime. cmogstored is the only component you need to install
on a MogileFS storage node.
Changes since 1.4.3:
A bunch of minor changes; most notable is systemd-style socket
activation support. This was easy-to-add since we've always had
socket activation support for nginx-style SIGUSR2 upgrades.
This places no link or runtime dependency on libsystemd, so the
LISTEN_FDS and LISTEN_PID environment variables may be used in other
init systems as well. While I have my own reservations about
systemd itself, I also strongly believe in using socket activation
to prevent downtime.
Behavior changes:
Bad Range: headers return 416 responses in more cases for invalid
ranges (e.g. miscalculated ranges such as "1--1", while
completely wrong ones (lacking a "bytes=" prefix)) are ignored
entirely as in nginx.
Bugfixes:
There are also some cleanups to avoid dying on OOM in more places
on weird systems which trigger OOM. More work on this is ongoing.
Also updates to the latest gnulib.git
commit f197c2c9e5e0d12c373f26d5b3211809457bc972
("intprops: new public macro EXPR_SIGNED")
along with a change which fixes a memory leak when people
build from cmogstored.git using gnulib
commit c6148bca89e9465fd6ba3a10d273ec4cb58c2dbe
or later ("mountlist: add me_mntroot field on Linux machines").
This memory leak did not affect any released tarballs of cmogstored.
shortlog of changes since 1.4.3:
doc: use "builder" RubyGem to generate Atom feed
dev.c: fail gracefully on out-of-memory errors
do not die on OOM when for mgmt paths
HACKING: update URLs to reduce redirects
http: return 416 errors in more cases for bad Ranges
update .gitignores for latest autotools + gnulib
Rakefile: remove text-only part from the Atom feed
support systemd-style socket activation via environment
set TCP listener options on inherited sockets
doc: add example systemd config files
use free_mount_entry from gnulib instead of rolling our own
fix tmpdir dependency for slow Ruby tests
doc: publish examples directory to website
Expect 1.5.0 final in a week or so (unless I forget :x)
http://bogomips.org/cmogstored/files/pre/cmogstored-1.5.0rc1.tar.gz
SHA-1 1b301ce5f180f9001275e26fa1c065593cc3569c
SHA-256 f99a9d4186c0b267952ec4806e6ccd333ab4441fe36e41417e4a09ccbd0c3e1e
* homepage: http://bogomips.org/cmogstored/README
* git clone git://bogomips.org/cmogstored.git
* cgit: http://bogomips.org/cmogstored.git
* gitweb: http://repo.or.cz/w/cmogstored.git
* list: cmogstored-public@bogomips.org (subscription optional)
* archives: http://bogomips.org/cmogstored-public/
* nntp://news.public-inbox.org/inbox.comp.file-systems.mogilefs.cmogstored
--
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2015-11-11 22:05 21% [ANN] cmogstored 1.5.0rc1 - a mogstored alternative Eric Wong
[not found] ` <CABJfL5iEz47zinp0rbOanrSN=1ubRFAa18wHaBnKSiTc+-Zpew@mail.gmail.com>
2015-11-11 22:41 7% ` Eric Wong
2015-11-21 2:58 5% [ANN] cmogstored 1.5.0 " Eric Wong
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