Hi, everyone.
I'm newbie for Ceph. According to Sage A. Weil's paper, Ceph was using EBOFS as
the file system for its OSDs. However, I looked into the source code of Ceph
and could hardly find any code of EBOFS. Is Ceph still using EBOFS or has opted
to use other types of file system for a sing
or each
of the others I listed initially.
Caveat emptor.
Ian
On Sunday, September 18, 2016, xxhdx1985126 wrote:
Hi, everyone.
I'm newbie for Ceph. According to Sage A. Weil's paper, Ceph was using EBOFS as
the file system for its OSDs. However, I looked into the source code
Hi, everyone.
On the "Block Storage" page, I found this: "Ceph RBD interfaces with the same
Ceph object storage system that provides the librados interface and the Ceph FS
file system, and it stores block device images as objects.".
Does it mean literally that a RBD image is implemented as an o
Hi, everyone.
After the file system synchronization, does OSD delete those journals that
corresponds to operations before the synchronization point?___
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Hi, everyone.
I've got a problem, here. Due to some miss operations, I deleted all three
replicas of my data, is there any way to recover it?
This is a very urgent problem.
Please help me, Thanks.___
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Hi, everyone.
I'm a newbie about ceph and trying to do some test to understand the behavior
of ceph. The following situation really overwhelmed me:
I first killed a osd, which made the size of the acting set of some pg became
1. Then I set min_size from 1 to 2, after which I started the kille
Sorry, I forgot to tell that those pgs assigned to the kill osd are still
writable after I raise min_size from 1 to 2 but before I restarted the killed
osd.
Forwarding messages
From: "xxhdx1985126"
Date: 2016-10-09 18:08:45
To: "ceph-us...@ceph.com&q
Hi, everyone.
If one OSD's state transforms from up to down, by "kill -i" for example, will
an "AdvMap" event be triggered on other related OSDs?___
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Hi, everyone.
I'm trying to read the source code that boots an OSD instance, and I find
something really overwhelms me.
In the OSD::init() method, it read the OSDSuperblock by calling
OSD::read_superblock(), and the it tried to get the "current" map : "osdmap =
get_map(superblock.current_epoch
know where it thought data was, in particular so it knows what it has. Then it gets the current map so it knows who to talk to so it can catch back up.
Sent from my iPhone
On Oct 22, 2016, at 7:12 AM, xxhdx1985126 <xxhdx1985...@163.com> wrote:
Hi, everyone.
I'm tryi
iable superblock.current_epoch is read from the disk by OSD::read_superblock and has't been updated by a monitor at boot time, which means it is not the real curent epoch but an old one. How can OSD get the current map using an old epoch?
On xxhdx1985126 , Oct 23, 2016 3:13 AM wrote:
Sorry, sir. I d
Hi, everyone.
Recently, I deployed a ceph cluster manually. And I found that, after I start
the ceph osd through "/etc/init.d/ceph -a start osd", the size of the log file
"ceph-osd.log" is 0, and its owner isnot "ceph" which I configured in
/etc/ceph/ceph.conf but the user who actually run the
Hi, everyone.
I'm trying to write a program based on the librbd API that transfers snapshot
diffs between ceph clusters without the need for a temporary storage which is
required if I use the "rbd export-diff" and "rbd import-diff" pair. I found
that the configuration object "g_conf" and ceph
Hi, everyone.
What are the meanings of the fields actingbackfill, want_acting and
backfill_targets of the PG class?
Thank you:-)___
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Hi, everyone.
In the PGLog::merge_log method, pg log entries in "olog" are inserted into
current PGLog's "missing" structure only when they have "version" larger than
current PGLog's head and its target object has "soid" less than current pg
info's last_backfill. What does "last_backfill" in p
Hi, everyone.
In our online system, some OSDs always fail due to the following error:
2016-10-25 19:00:00.626567 7f9a63bff700 -1 error_msg osd/ReplicatedPG.cc: In
function 'void ReplicatedPG::wait_for_unreadable_object(const hobject_t&,
OpRequestRef)' thread 7f9a63bff700 time 2016-10-25 19:00:0
Hi, everyone.
Sometimes, I've got a need to know the ip address of the ceph client at the
time, is there any way to list those ip address in ceph cluster?
Thank you:-)___
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Hi, everyone.
Sometimes, I've got a need to know the ip address of the ceph client at the
time, is there any way to list those ip address in ceph cluster? I'm using ceph
rbd with kvm servers.
Thank you:-)
___
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Hi, everyone.
What is Objecter::Op::replay_version used for?
Thanks:-)
___
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Hi, everyone.
What is Objecter::Op::replay_version used for?
Thanks:-)___
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st the end of the interval (i.e., didn't crash and
// potentially fail to COMMIT a write that it ACKed).
Forwarding messages ----
From: "xxhdx1985126"
Date: 2016-12-26 16:09:37
To: "ceph-us...@ceph.com"
Subject: What is replay_version u
Hi, everyone.
Recently, I've got a need to check the real size of an rbd image. I followed
the instructions in "http://ceph.com/planet/rbd-image-real-size/";. the result
is shown as follows:
[xuxuehan@localhost ~]$ rbd diff xxh_pool/clone_test_img2
OffsetLength Type
0 4194304 data
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