Re: [openstack-dev] multi-attach-volume for rbd

2016-12-19 Thread Avishay Traeger
> __ > OpenStack Development Mailing List (not for usage questions) > Unsubscribe: openstack-dev-requ...@lists.openstack.org?subject:unsubscribe > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev

Re: [openstack-dev] [cinder] moving driver to open source

2016-09-20 Thread Avishay Traeger
On Tue, Sep 20, 2016 at 8:50 AM, Alon Marx <alo...@il.ibm.com> wrote: > > From deployment stand point the desire is to have any piece of code that > is required on an openstack installation would be easily downloadable. > And redistributable please. -- *Avishay Traeger, PhD*

Re: [openstack-dev] [glance] Periodically checking Glance image files

2016-09-13 Thread Avishay Traeger
d need its own scrubbing process (e.g., recalculate hash for each object every N days). On the other hand if it is a mount of some filer, the filer should be able to report on health. Thanks, Avishay -- *Avishay Traeger, PhD* *System Architect* Mobile: +972 54 447 1475 E-mail: avis...@strato

Re: [openstack-dev] [cinder] moving driver to open source

2016-09-10 Thread Avishay Traeger
On Sep 9, 2016 18:13, "Duncan Thomas" > So my issue is not with any of those things, it is that I believe anybody should be able to put together a distribution of openstack, that just works, which any supported backend, without needed to negotiate licensing deals with vendors, and without having

Re: [openstack-dev] [cinder] moving driver to open source

2016-09-08 Thread Avishay Traeger
openstack-dev-requ...@lists.openstack.org?subject:unsubscrib >> e >> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev >> >> > I'm assuming this is the XIV driver which is a shim: > > https://github.com/openstack/cinder/blob/master/cinder/volu

Re: [openstack-dev] [cinder][drivers] Backend and volume health reporting

2016-08-15 Thread Avishay Traeger
"Don't bother trying to attach this volume right now, it's not accessible." "The storage is currently doing something with your volume and performance will suck." I don't know exactly what we want to expose - I'd rather answer that after getting feedback from vendors about w

[openstack-dev] [cinder][drivers] Backend and volume health reporting

2016-08-14 Thread Avishay Traeger
1. What useful information can you provide at the backend level? 2. And at the volume level? 3. How would you obtain this information? Querying the storage (poll)? Registering for events? Something else? 4. Other feedback? Thank you, Avishay -- *Avishay Traeger, PhD* *System Architec

[openstack-dev] [swift] Hummingbird Roadmap

2016-03-21 Thread Avishay Traeger
Hi all, I was wondering what the roadmap for Hummingbird is. Will development continue? Will support continue? Is it expected to reach feature parity or even replace the Python code? Thank you, Avishay -- *Avishay Traeger, PhD* *System Architect* Mobile: +972 54 447 1475 E-mail: avis

Re: [openstack-dev] [Nova][Cinder] Multi-attach, determining when to call os-brick's connector.disconnect_volume

2016-02-11 Thread Avishay Traeger
of attach being handled the same way, we are getting into tricky situations. (3 types: iSCSI/FC attach volume to host, Ceph attach volume to VM, NFS attach pool to host) Multi-attach just makes a bad situation worse. -- *Avishay Traeger, PhD* *System Architect* Mobile: +972 54 447 14

Re: [openstack-dev] [Nova][Cinder] Multi-attach, determining when to call os-brick's connector.disconnect_volume

2016-02-10 Thread Avishay Traeger
he multiple use of a > single target case in Nova, and then absolutely figure out how to make > things work correctly on the Cinder side for all the different behaviors > that may occur on the Cinder side from the various vendors. > > Make sense? > > John > > __

Re: [openstack-dev] [Nova][Cinder] Cleanly detaching volumes from failed nodes

2016-02-06 Thread Avishay Traeger
impler. (Might need to pass an extra flag on the second attach to over-ride any "no multiattach" policies that exist.) -- *Avishay Traeger, PhD* *System Architect* Mobile: +972 54 447 1475 E-mail: avis...@stratoscale.com Web <http://www.stratoscale.com/> | Blog <http://www.strat

Re: [openstack-dev] [Nova][Cinder] Cleanly detaching volumes from failed nodes

2016-01-27 Thread Avishay Traeger
> compat with adding new keys to it. > I agree with you. Actually, I think it would be more correct to have Cinder store it, and not pass it at all to terminate_connection(). -- *Avishay Traeger, PhD* *System Architect* Mobile: +972 54 447 1475 E-mail: avis...@stratoscale.com Web <ht

Re: [openstack-dev] [Nova][Cinder] Cleanly detaching volumes from failed nodes

2016-01-25 Thread Avishay Traeger
he > Nova node (or the instance) has gone away. We’ve put this topic on the > agenda for the Cinder mid-cycle this week: > > https://etherpad.openstack.org/p/mitaka-cinder-midcycle L#113 > > > > *From:* Avishay Traeger [mailto:avis...@stratoscale.com] > *Sen

[openstack-dev] [Nova][Cinder] Cleanly detaching volumes from failed nodes

2016-01-25 Thread Avishay Traeger
WWPNs, etc. If the node has died, this information is no longer available, and so the attachment cannot be cleaned up properly. Is there any way to handle this today? If not, does it make sense to save the connector elsewhere (e.g., DB) for cases like these? Thanks, Avishay -- *Avishay Tr

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

2015-08-01 Thread Avishay Traeger
. Another requirement of idempotency would significantly ease recovery pains I believe. I very much agree with Mike's statement that Cinder isn't as complex as people are making it. Well maybe it is, but it doesn't need to be. :-) -- *Avishay Traeger, PhD* *Architect* Mobile: +972 54 447 1475 E

Re: [openstack-dev] [cinder][oslo] Locks for create from volume/snapshot

2015-06-29 Thread Avishay Traeger
to looser consistency, and I struggle to come up with a sane api that does - nobody doing an operation on a volume wants it to happen maybe, at some time... What about deletes? They can happen later on, which can help in these situations I think. -- *Avishay Traeger* *Storage RD* Mobile

Re: [openstack-dev] [cinder][oslo] Locks for create from volume/snapshot

2015-06-27 Thread Avishay Traeger
://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev -- *Avishay Traeger* *Storage RD* Mobile: +972 54 447 1475 E-mail: avis...@stratoscale.com Web http://www.stratoscale.com/ | Blog http://www.stratoscale.com/blog/ | Twitter https://twitter.com/Stratoscale | Google+ https

Re: [openstack-dev] [tempest][qa][cinder] How to configure tempest with to test volume migration?

2015-05-26 Thread Avishay Traeger
__ OpenStack Development Mailing List (not for usage questions) Unsubscribe: openstack-dev-requ...@lists.openstack.org?subject:unsubscribe http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev -- *Avishay Traeger* *Storage RD* Mobile: +972 54 447 1475 E-mail

Re: [openstack-dev] [cinder] Some Changes to Cinder Core

2015-05-25 Thread Avishay Traeger
On Sat, May 23, 2015 at 2:34 AM, Mike Perez thin...@gmail.com wrote: I would like to recognize Avishay Traeger for his contributions, and now unfortunately departure from the Cinder core team. Unfortunately I have been unable to participate in fully due to additional obligations

Re: [openstack-dev] Cinder Third-Party CI: what next? (was Re: [cinder] Request exemption for removal of NetApp FC drivers (no voting CI))

2015-03-24 Thread Avishay Traeger
-or-less working. Kudos to Mike, and to all of the Cinder folks that pioneered the effort and provided support to those that followed. -- *Avishay Traeger* *Storage RD* Mobile: +972 54 447 1475 E-mail: avis...@stratoscale.com Web http://www.stratoscale.com/ | Blog http://www.stratoscale.com/blog

Re: [openstack-dev] [cinder][horizon]Proper error handling/propagation to UI

2015-03-02 Thread Avishay Traeger
: SnapshotIsBusy). Eduard On Mon, Mar 2, 2015 at 7:57 AM, Avishay Traeger avis...@stratoscale.com wrote: Deleting a volume created from a snapshot is permitted. Performing operations on a volume created from snapshot should have the same behavior as volumes created from volumes, images, or empty

Re: [openstack-dev] [cinder][horizon]Proper error handling/propagation to UI

2015-03-01 Thread Avishay Traeger
__ OpenStack Development Mailing List (not for usage questions) Unsubscribe: openstack-dev-requ...@lists.openstack.org?subject:unsubscribe http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev -- *Avishay

Re: [openstack-dev] what code in cinder volume driver supports volume migration between two backends of same type but having different volume types? [cinder]

2015-02-28 Thread Avishay Traeger
__ OpenStack Development Mailing List (not for usage questions) Unsubscribe: openstack-dev-requ...@lists.openstack.org?subject:unsubscribe http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev -- *Avishay Traeger* *Storage RD* Mobile: +972 54 447

Re: [openstack-dev] [all][oslo.db][nova] TL; DR Things everybody should know about Galera

2015-02-04 Thread Avishay Traeger
to db/sqlalchemy, but of course it's a huge undertaking. NoSQL (or even distributed key-value stores) should be considered IMO. Just some food for thought :) -- *Avishay Traeger* *Storage RD* Mobile: +972 54 447 1475 E-mail: avis...@stratoscale.com Web http://www.stratoscale.com/ | Blog http

Re: [openstack-dev] what code in cinder volume driver supports volume migration between two backends of same type but having different volume types?

2015-01-21 Thread Avishay Traeger
. The IBM storwize/svc driver implements both, as do several others - I suggest you look at them for examples. Thanks, Avishay -- *Avishay Traeger* *Storage RD* Mobile: +972 54 447 1475 E-mail: avis...@stratoscale.com Web http://www.stratoscale.com/ | Blog http://www.stratoscale.com/blog

Re: [openstack-dev] Changes to Cinder Core

2015-01-21 Thread Avishay Traeger
/mailman/listinfo/openstack-dev -- *Avishay Traeger* *Storage RD* Mobile: +972 54 447 1475 E-mail: avis...@stratoscale.com Web http://www.stratoscale.com/ | Blog http://www.stratoscale.com/blog/ | Twitter https://twitter.com/Stratoscale | Google+ https://plus.google.com/u/1/b

Re: [openstack-dev] [cinder][nova] Are disk-intensive operations managed ... or not?

2014-10-21 Thread Avishay Traeger
chris.frie...@windriver.com wrote: On 10/19/2014 09:33 AM, Avishay Traeger wrote: Hi Preston, Replies to some of your cinder-related questions: 1. Creating a snapshot isn't usually an I/O intensive operation. Are you seeing I/O spike or CPU? If you're seeing CPU load, I've seen the CPU usage

Re: [openstack-dev] [cinder][nova] Are disk-intensive operations managed ... or not?

2014-10-19 Thread Avishay Traeger
Hi Preston, Replies to some of your cinder-related questions: 1. Creating a snapshot isn't usually an I/O intensive operation. Are you seeing I/O spike or CPU? If you're seeing CPU load, I've seen the CPU usage of cinder-api spike sometimes - not sure why. 2. The 'dd' processes that you see are

Re: [openstack-dev] [Cinder] Get server side exception

2014-10-05 Thread Avishay Traeger
Hi Eduard, According to the error you had, I assume your volume format is sparse (probably qcow2). When you create a volume out of it, Cinder will convert the format to 'raw', which increases its size. I believe the 'size' parameter is now optional if you create a volume from a source (such as

Re: [openstack-dev] [OpenStack-Dev][Cinder] Cinder Core nomination

2014-08-19 Thread Avishay Traeger
+1 On Thu, Aug 14, 2014 at 9:55 AM, Boring, Walter walter.bor...@hp.com wrote: Hey guys, I wanted to pose a nomination for Cinder core. Xing Yang. She has been active in the cinder community for many releases and has worked on several drivers as well as other features for cinder

Re: [openstack-dev] [nova][core] Expectations of core reviewers

2014-08-19 Thread Avishay Traeger
I think to make the Summit sessions more effective: 1. The presenter to put in more effort beforehand - implement a rough POC, write up a detailed etherpad, etc. where everything is ready say 2-3 weeks before the Summit. Maybe even require a reviewed spec for sessions which introduce new

Re: [openstack-dev] [Cinder] About storing volume format info for filesystem-based drivers

2014-06-24 Thread Avishay Traeger
One more reason why block storage management doesn't really work on file systems. I'm OK with storing the format, but that just means you fail migration/backup operations with different formats, right? On Mon, Jun 23, 2014 at 6:07 PM, Trump.Zhang zhangleiqi...@gmail.com wrote: Hi, all:

Re: [openstack-dev] [Cinder][Driver] Delete snapshot

2014-06-21 Thread Avishay Traeger
This is what I thought of as well. In the rbd driver, if a request to delete a volume comes in, where the volume object on the backend has other objects that depend on it, it simply renames it: https://github.com/openstack/cinder/blob/master/cinder/volume/drivers/rbd.py#L657 There is also code

Re: [openstack-dev] [Cinder] Mid-cycle meetup for Cinder devs

2014-06-12 Thread Avishay Traeger
I think you can create an easy survey with doodle.com. You can fill in the dates, and ask people to specify next to their names if their attendance will be physical or virtual. On Thu, Jun 12, 2014 at 12:16 AM, D'Angelo, Scott scott.dang...@hp.com wrote: During the June 11 #openstack-cinder

Re: [openstack-dev] [Cinder] Support LVM on a shared LU

2014-05-25 Thread Avishay Traeger
this? Please consider above main benefit. Regards, Mitsuhiro Tanino mitsuhiro.tan...@hds.com *HITACHI DATA SYSTEMS* c/o Red Hat, 314 Littleton Road, Westford, MA 01886 *From:* Avishay Traeger [mailto:avis...@stratoscale.com] *Sent:* Wednesday, May 21, 2014 4:36 AM *To:* OpenStack

Re: [openstack-dev] [Cinder] Support LVM on a shared LU

2014-05-21 Thread Avishay Traeger
So the way I see it, the value here is a generic driver that can work with any storage. The downsides: 1. The admin has to manually provision a very big volume and attach it to the Nova and Cinder hosts. Every time a host is rebooted, or introduced, the admin must do manual work. This is one of

Re: [openstack-dev] [Cinder] pep8 issues and how to pep8 locally ?

2014-04-28 Thread Avishay Traeger
Deepak, Sean meant that 'tox -epep8' is the command that runs the pep8 checks. You can install tox with 'pip install tox' and pep8 with 'pip install pep8'. Once you have those, run 'tox -epep8' Thanks, Avishay On Mon, Apr 28, 2014 at 1:15 PM, Deepak Shetty dpkshe...@gmail.com wrote:

Re: [openstack-dev] [Cinder] Regarding manage_existing and unmanage

2014-04-09 Thread Avishay Traeger
On Wed, Apr 9, 2014 at 8:35 AM, Deepak Shetty dpkshe...@gmail.com wrote: On Tue, Apr 8, 2014 at 6:24 PM, Avishay Traeger avis...@stratoscale.comwrote: On Tue, Apr 8, 2014 at 9:17 AM, Deepak Shetty dpkshe...@gmail.comwrote: Hi List, I had few Qs on the implementation

Re: [openstack-dev] [Cinder] Regarding manage_existing and unmanage

2014-04-08 Thread Avishay Traeger
On Tue, Apr 8, 2014 at 9:17 AM, Deepak Shetty dpkshe...@gmail.com wrote: Hi List, I had few Qs on the implementation of manage_existing and unmanage API extns 1) For LVM case, it renames the lv.. isn't it better to use name_id (one used during cinder migrate to keep id same for a diff

[openstack-dev] AUTO: Avishay Traeger is prepared for DELETION (FREEZE) (returning 05/12/2013)

2014-03-06 Thread Avishay Traeger
I am out of the office until 05/12/2013. Avishay Traeger is prepared for DELETION (FREEZE) Note: This is an automated response to your message Re: [openstack-dev] [Cinder][FFE] Cinder switch-over to oslo.messaging sent on 06/03/2014 12:50:51. This is the only notification you

Re: [openstack-dev] [Cinder] Questions about proposed volume replication patch

2014-02-23 Thread Avishay Traeger
Hi Bruce, Bruce Montague bruce_monta...@symantec.com wrote on 02/23/2014 03:35:10 AM: Hi, regarding the proposed Cinder volume replication patch, https://review.openstack.org/#/c/64026 : The replication driver methods are create_replica(), swap_replica(), delete_replica(),

Re: [openstack-dev] [OpenStack-Dev] [Cinder] Cinder driver verification

2014-02-13 Thread Avishay Traeger
Walter A. Boring IV walter.bor...@hp.com wrote on 02/13/2014 06:59:38 PM: What I would do different for the Icehouse release is this: If a driver doesn't pass the certification test by IceHouse RC1, then we have a bug filed against the driver. I would also put a warning message in the

Re: [openstack-dev] Cinder Stability Hack-a-thon

2014-02-02 Thread Avishay Traeger
Will join remotely for a few hours each day (time zones and all). Nice effort! Thanks, Avishay From: Mike Perez thin...@gmail.com To: OpenStack Development Mailing List openstack-dev@lists.openstack.org, Date: 02/01/2014 10:09 AM Subject:[openstack-dev] Cinder Stability

Re: [openstack-dev] [cinder] weekly meeting

2013-12-18 Thread Avishay Traeger
For me, 4/5 is currently 6/7AM. An hour later when daylight savings messes things up. Exactly wake up/get ready/kid to school/me to work time. I'd rather leave it as is (6/7PM depending on daylight savings). If you alternate, I may have to miss some. Thanks, Avishay From: John Griffith

Re: [openstack-dev] [OpenStack-dev][cinder][glance] Should glance be installed on cinder only nodes?

2013-12-03 Thread Avishay Traeger
Gans, No, you don't need to install Glance on Cinder nodes. Cinder will use the Glance client, which must be installed on the Cinder node (see python-glanceclient the requirements.txt file in Cinder's tree). Thanks, Avishay From: gans developer gans.develo...@gmail.com To:

Re: [openstack-dev] [Cinder] Cloning vs copying images

2013-12-02 Thread Avishay Traeger
Dmitry, You are correct. I made the same comment on the review before seeing this thread. Let's see how both patches turn out and we'll choose one. :) Thanks, Avishay From: Dmitry Borodaenko dborodae...@mirantis.com To: openstack-dev@lists.openstack.org, Date: 12/02/2013 09:32 PM

Re: [openstack-dev] ERROR : Unable to locate Volume Group stack-volumes

2013-11-09 Thread Avishay Traeger
Hello Xin, This error indicates that there is no volume group named stack-volumes. Can you verify if it exists with the command sudo vgs? If does not exist, perhaps something is in the devstack logs about why it failed to create it? Thanks, Avishay From: openstack learner

Re: [openstack-dev] Improvement of Cinder API wrt https://bugs.launchpad.net/nova/+bug/1213953

2013-11-05 Thread Avishay Traeger
Chris Friesen chris.frie...@windriver.com wrote on 11/05/2013 10:21:07 PM: I think the proper fix is to make sure that Cinder is moving the volume into 'error' state in all cases where there is an error. Nova can then poll as long as its in the 'downloading' state, until it's 'available' or

Re: [openstack-dev] Improvement of Cinder API wrt https://bugs.launchpad.net/nova/+bug/1213953

2013-11-04 Thread Avishay Traeger
So while doubling the timeout will fix some cases, there will be cases with larger volumes and/or slower systems where the bug will still hit. Even timing out on the download progress can lead to unnecessary timeouts (if it's really slow, or volume is really big, it can stay at 5% for some time).

Re: [openstack-dev] [Cinder] Propose Jay Bryant for core

2013-10-30 Thread Avishay Traeger
+1 From: John Griffith john.griff...@solidfire.com To: OpenStack Development Mailing List openstack-dev@lists.openstack.org, Date: 10/29/2013 11:05 PM Subject:[openstack-dev] [Cinder] Propose Jay Bryant for core Hey, I wanted to propose Jay Bryant (AKA jsbryant,

[openstack-dev] Towards OpenStack Disaster Recovery

2013-10-21 Thread Avishay Traeger
for that, as well as this mailing list, of course. Thank you, Avishay Traeger ___ OpenStack-dev mailing list OpenStack-dev@lists.openstack.org http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev

Re: [openstack-dev] how can i get volume name in create snapshot call

2013-10-15 Thread Avishay Traeger
Dinakar, The driver's create_snapshot function gets a dictionary that describes the snapshot. In that dictionary, you have the volume_name field that has the source volume's name: snapshot['volume_name']. You can get other details via snapshot['volume'], which is a dictionary containing the

[openstack-dev] Additions to Hypervisor Support Matrix

2013-09-16 Thread Avishay Traeger
Hi all, I have added a few features to the hypervisor support matrix that are related to volume functions. https://wiki.openstack.org/wiki/HypervisorSupportMatrix#Hypervisor_feature_support_matrix 1. iSCSI CHAP: Sets CHAP password on iSCSI connections 2. Fibre Channel: Use the FC protocol to

Re: [openstack-dev] OpenStack Cinder List Snapshots Support

2013-08-04 Thread Avishay Traeger
This is handled by the DB, not drivers. That line doesn't make sense. Thanks, Avishay From: Mikhail Khodos hodo...@gmail.com To: openstack-dev@lists.openstack.org, Date: 08/01/2013 11:09 PM Subject:[openstack-dev] OpenStack Cinder List Snapshots Support The Cinder Support

Re: [openstack-dev] [OpenStack][Cinder] Driver qualification

2013-07-28 Thread Avishay Traeger
John Griffith john.griff...@solidfire.com wrote on 07/26/2013 03:44:12 AM: snip I think it would be a very useful tool for initial introduction of a new driver and even perhaps some sort of check that's run and submitted again prior to milestone releases. snip +1. Do you see this happening

Re: [openstack-dev] [cinder] Proposal for Ollie Leahy to join cinder-core

2013-07-17 Thread Avishay Traeger
-1 I'm sorry to do that, and it really has nothing to do with Ollie or his work (which I appreciate very much). The main reason is that right now Cinder core has 8 members: 1. Avishay Traeger (IBM) 2. Duncan Thomas (HP) 3. Eric Harney (RedHat) 4. Huang Zhiteng (Intel) 5. John Griffith (SolidFire

Re: [openstack-dev] [cinder] Proposal for Ollie Leahy to join cinder-core

2013-07-17 Thread Avishay Traeger
Dan Smith d...@danplanet.com wrote on 07/17/2013 09:40:02 PM: The affiliation of core team members should not come into a decision like this. It is assumed that all core team members are wearing their upstream hat and aren't there merely to represent their employers interests. Mark

Re: [openstack-dev] [Openstack] [cinder] Proposal for Ollie Leahy to join cinder-core

2013-07-17 Thread Avishay Traeger
Monty Taylor mord...@inaugust.com wrote on 07/17/2013 09:52:47 PM: On 07/17/2013 02:35 PM, John Griffith wrote: snip Just to point out a few things here, first off there is no guideline that states a company affiliation should have anything to do with the decision on voting somebody as

Re: [openstack-dev] [Openstack] [cinder] Proposal for Ollie Leahy to join cinder-core

2013-07-17 Thread Avishay Traeger
Walter A. Boring IV walter.bor...@hp.com wrote on 07/18/2013 12:04:07 AM: snip +1 to Ollie from me. +1 to John's points. If a company is colluding with other core members, from the same company, to do bad things within a project, it should become pretty obvious at some point and the