Ceph » rbd

06/18/2012

08:57 PM Feature #2556: rbd tool: break image locks

Greg Farnum wrote:
> Team RBD needs more to do! Pulling this forward. :)
Go team! :) Sage Weil

06:26 PM Feature #2556 (In Progress): rbd tool: break image locks

Team RBD needs more to do! Pulling this forward. :) Greg Farnum

05:56 PM Feature #2585 (In Progress): rbd: clone command

Dan Mick

05:34 PM Feature #2585: rbd: clone command

Dan Mick

05:35 PM Feature #2559: cls_rbd: copyup method

Dan Mick

01:50 PM Feature #2601: rbd: Show image size with an "ls"

We've also heard from others that having a better estimate of rbd usage and expected usage would be good; taking into... Dan Mick

06:09 AM Feature #2601 (Resolved): rbd: Show image size with an "ls"

On the mailinglist the request came if the "rbd" tool could be modified to not only show image names when doing an ls... Wido den Hollander

06/16/2012

08:24 AM Bug #2535: rbd: random data corruption in vm

We've disabled fiemap, which appears to be the culprit. Josh is still tracking down which kernel releases are affect... Sage Weil

06/15/2012

05:58 PM Feature #1480 (Resolved): librbd: image locking

Okay, discussed and merged in commit:dac9f223598c5f67b228403e514f202280d56488 Greg Farnum

05:49 PM Feature #1480: librbd: image locking

And after thorough review from Josh, this should be ready for merge (commit:5b1b02b60a253092700f364dca77bb6b1065e3e0)... Greg Farnum

11:48 AM Bug #2597 (Resolved): Import of image from file appears to succeed, but image not present in the ...

I have been testing with storing an image file, a basic QCOW2 image of latest Ubuntu distro on a pool, which is used ... Sam Zaydel

10:44 AM Feature #2558: cls_rbd: child/parent methods

wip-clsrbd Sage Weil

10:44 AM Feature #2558 (Fix Under Review): cls_rbd: child/parent methods

Sage Weil

06/14/2012

03:06 PM Bug #2534: librbd: make sure watch is established on same header version as initial read was

Okay, this is blocked by #2592. Greg Farnum

02:37 PM Feature #1480 (Fix Under Review): librbd: image locking

wip-rbd-locking Greg Farnum

12:59 PM Bug #2535: rbd: random data corruption in vm

Sage Weil wrote:
> Just a bit of context: rbd without caching does a 'sparse-read' operation, which uses FIEMAP to d... Sage Weil

12:52 PM Bug #2535: rbd: random data corruption in vm

Just a bit of context: rbd without caching does a 'sparse-read' operation, which uses FIEMAP to determine which parts... Sage Weil

12:50 PM Bug #2535: rbd: random data corruption in vm

Let's try a different tack: I pushed a osd-verify-sparse-read-holes branch to ceph.git (based on 0.47.2) that reads ... Sage Weil

09:09 AM Bug #2535: rbd: random data corruption in vm

Status update:
I tried modifying the iotester so that it would work directly on the block device, in the hopes I c... Guido Winkelmann

09:09 AM Bug #2410: hung xfstest #68

disabled 68 in qa for the time being. Sage Weil

09:03 AM Bug #2522: xfstest #219

Sigh.. took a quick look and it's non-obvious why the repquota output doesn't match. Disabling this for now, but lea... Sage Weil

06/13/2012

02:28 PM Feature #2586 (Rejected): rbd: check/take locks on --lock

if you pass --lock to rbd, take an exclusive lock, do whatever, unlock Sage Weil

02:20 PM Feature #2585 (Resolved): rbd: clone command

A command for the rbd tool to create a child image from a parent. Example:
rbd clone --parent pool/image@snap pool... Sage Weil

01:56 PM Feature #2467 (Rejected): qemu: implement bdrv_invalidate_cache

I've tested migration with caching, and read the code, and it looks like this is unnecessary. qemu is doing a flush b... Josh Durgin

01:20 PM Bug #2522: xfstest #219

The problem here appears to be that the output of the repquota
command is not what's expected. I think the group qu... Alex Elder

11:20 AM Cleanup #2347 (Resolved): The rbd help text is misleading on required arguments

commit:67710a65c7cd1173c73c40241572d615dd7da1f3 Sage Weil

10:30 AM Bug #2572 (Resolved): krbd: writeback errors?

While trying to reproduce a null pointer messenger problem,
I kept hitting messages like this after some (fairly ran... Alex Elder

10:27 AM Bug #2535: rbd: random data corruption in vm

Sage Weil wrote:
> Guido Winkelmann wrote:
> > Sage Weil wrote:
> > > Are there multiple partitions or is LVM on t... Guido Winkelmann

09:23 AM Feature #2568 (Resolved): qa: run xfstests on qemu+rbd

This will build on #2566:
* stage xfstests on vdb, like a regular workunit, and:
* map additional rbd images to r... Sage Weil

09:21 AM Feature #2567 (Resolved): qa: add qemu+rbd jobs to qa suite

Add a bunch of workunits to the qa suite that will run on top of rbd inside a vm. Sage Weil

09:20 AM Feature #2566 (Duplicate): teuthology: task to run rbd workunits in a vm

teuthology task that will:
* download workunit vm
* create and format rbd image
* mount, stage a workunit in rbd... Sage Weil

06/12/2012

02:40 PM Feature #2561: rbd: copyup command

What? How does a class function of any kind provide atomicity in cross-OSD data copies? Greg Farnum

02:37 PM Feature #2561: rbd: copyup command

'rbd copyup pool/image' command to copy any missing objects up from the parent. simple O(n) operation that leverages... Sage Weil

02:11 PM Feature #2561 (Resolved): rbd: copyup command

'rbd copyup pool/image' command to copy any missing objects up from the parent. simple O(n) operation that leverages ... Sage Weil

02:39 PM Feature #2562 (Resolved): librbd: open parent images, read path, write path

- when we open an image, open the parent image too.
- make reads fall through to parent
- guard writes beyond paren... Sage Weil

02:05 PM Feature #2560 (Resolved): rbd: safe parent deletion

- maintain map of parent/child pairs in each child pool... Sage Weil

02:04 PM Feature #2531: rbd: fencing broken clients

As I see it, we have two options that we need to choose between.
1) We can add fencing to librbd and let anybody do ... Greg Farnum

01:55 PM Feature #2559 (Resolved): cls_rbd: copyup method

- client provides object content
- if object exists, fail with EEXIST (or 0, or something)
- if object does not exi... Sage Weil

01:54 PM Feature #2558 (Resolved): cls_rbd: child/parent methods

On the new image header:
- set_parent(poolid, image (maybe id, maybe name), snapid)
On the per-pool child list:
... Sage Weil

01:52 PM Feature #2557 (Rejected): QEMU support for image locking

We should convert QEMU to make use of rbd cooperative locking, once it's done (#1480).
And any other appropriate c... Greg Farnum

01:50 PM Feature #2556 (Resolved): rbd tool: break image locks

Once #1480 is done, expose lock breaking via the rbd tool. Greg Farnum

10:10 AM Bug #2535: rbd: random data corruption in vm

Guido Winkelmann wrote:
> Sage Weil wrote:
> > Are there multiple partitions or is LVM on the disk, or is the file ... Sage Weil

10:07 AM Bug #2535: rbd: random data corruption in vm

Sage Weil wrote:
> Are there multiple partitions or is LVM on the disk, or is the file system on the raw device?
... Guido Winkelmann

09:29 AM Bug #2535: rbd: random data corruption in vm

Are there multiple partitions or is LVM on the disk, or is the file system on the raw device? Sage Weil

05:32 AM Bug #2535: rbd: random data corruption in vm

Am Montag, 11. Juni 2012, 09:30:42 schrieb Sage Weil:
> If you can reproduce it with 'debug filestore = 20' too, tha... Guido Winkelmann

05:29 AM Bug #2535: rbd: random data corruption in vm

The bug also does not seem to have any effect with the setting "filestore fiemap = false" in ceph.conf. Guido Winkelmann

06/09/2012

08:06 PM Bug #2535: rbd: random data corruption in vm

The information that *should* let us fully diagnose:
* set
debug osd = 20
debug filestore = 20
debug ms = ... Sage Weil

08:04 PM Bug #2535 (Resolved): rbd: random data corruption in vm

From ML:... Sage Weil

06/08/2012

04:42 PM Bug #2534 (Resolved): librbd: make sure watch is established on same header version as initial re...

Right now there's a race where it doesn't. Greg Farnum

10:12 AM Feature #2531: rbd: fencing broken clients

I talked to Sam about the combination of blacklisting, bad client writes, and changing primaries that we discussed an... Greg Farnum

10:06 AM Bug #2478 (New): krbd: unmap on 3.4.0: scheduling while atomic...

Sage Weil

09:51 AM Bug #2532: rbd command allows passing in -K </path/to/secret>, but long version of (--secret) doe...

That's probably best. It is always easier though when all subcommands under the main command, rbd in this case used o... Sam Zaydel

09:00 AM Bug #2532: rbd command allows passing in -K </path/to/secret>, but long version of (--secret) doe...

Oh, i see.
I think the right fix is to make '--secret' and synonym for '--keyfile', and fix up rbd to use the conf... Sage Weil

08:20 AM Bug #2532: rbd command allows passing in -K </path/to/secret>, but long version of (--secret) doe...

When I try to use --keyfile=<file> with map, it seemingly fails, but using --secret=<file> succeeds. ... Sam Zaydel

08:13 AM Bug #2532: rbd command allows passing in -K </path/to/secret>, but long version of (--secret) doe...

This is part of the rbd cmd helper message. It seems that for the map command one uses --secret.... Sam Zaydel

07:00 AM Bug #2532: rbd command allows passing in -K </path/to/secret>, but long version of (--secret) doe...

the option is --keyfile <file>... where did you see --secret <file> documented? Sage Weil

05:49 AM Bug #2532 (Resolved): rbd command allows passing in -K </path/to/secret>, but long version of (--...

While rolling back a snapshot I succeed when I pass in `-K with location of key file, but it looks like I fail when I... Sam Zaydel

06/07/2012

09:38 PM Feature #2531 (Resolved): rbd: fencing broken clients

Sage Weil

04:25 PM Documentation #2530 (Closed): Doc: rbd manpage doesn't mention watch; usage does, and it works

Dan Mick

03:10 PM Bug #2528 (Resolved): Mounted RBD image appears to go read-only after a snapshot is created

I have been able to repeat this a number of times. Essentially, I create a small rbd device, using the map command in... Sam Zaydel

06/06/2012

01:22 PM Bug #2522: xfstest #219

ubuntu@teuthology:/a/nightly_coverage_2012-06-05-b Sage Weil

01:21 PM Bug #2522 (Closed): xfstest #219

... Sage Weil

06/05/2012

09:56 AM Feature #1480: librbd: image locking

lock(entity)
unlock(entity)
new code should lock before open, unlock on close.
the rbd map tool have 'lock lis... Sage Weil

05/30/2012

02:28 PM Bug #2488 (Can't reproduce): rbd: EIO from rbd map

... Sage Weil

08:35 AM Bug #2478: krbd: unmap on 3.4.0: scheduling while atomic...

with patch above, this trace appears after ~15 sec from unmap operation
[ 2453.203365] ------------[ cut here ]---... Andrey Korolyov

05/26/2012

01:30 PM Bug #2478 (In Progress): krbd: unmap on 3.4.0: scheduling while atomic...

commit:cd9d9f5df6098c50726200d4185e9e8da32785b3 already fixes this; we just neglected to send it upstream for 3.4. I... Sage Weil

06:05 AM Bug #2478 (Can't reproduce): krbd: unmap on 3.4.0: scheduling while atomic...

On 3.4.0 on the 'rbd unmap' call kernel rbd driver produces following trace(same for vanilla):
[ 8660.786269] BUG... Andrey Korolyov

05/23/2012

12:52 PM Feature #2468 (Resolved): librbd: provide a way for a user to flush and invalidate the cache

This could be an admin socket command. This would make live migration work with older qemu when rbd caching is enabled. Josh Durgin

12:37 PM Feature #2467 (Resolved): qemu: implement bdrv_invalidate_cache

This is used during live migration to clear librbd's cache on the destination host before starting the guest there. I... Josh Durgin

12:35 PM Feature #2466 (Resolved): librbd: add invalidate_cache function to interface

Qemu requires this to make live migration work when caching is enabled. Josh Durgin

05/21/2012

02:48 PM Bug #2457 (Resolved): libvirt: migration fails with rbd in 0.9.11 and 0.9.12

As reported on libvirt-users:
https://www.redhat.com/archives/libvirt-users/2012-May/msg00088.html
Looks like a... Josh Durgin