Pranith Kumar Karampuri
2017-May-04 10:35 UTC
[Gluster-users] [Gluster-devel] Enabling shard on EC
+Krutika Krutika started work on this. But it is very long term. Not a simple thing to do. On Thu, May 4, 2017 at 3:53 PM, Ankireddypalle Reddy <areddy at commvault.com> wrote:> Pranith, > > Thanks. Is there any work in progress to add this support. > > > > Thanks and Regards, > > Ram > > *From:* Pranith Kumar Karampuri [mailto:pkarampu at redhat.com] > *Sent:* Thursday, May 04, 2017 6:17 AM > > *To:* Ankireddypalle Reddy > *Cc:* Gluster Devel (gluster-devel at gluster.org); gluster-users at gluster.org > *Subject:* Re: [Gluster-devel] Enabling shard on EC > > > > > > > > On Thu, May 4, 2017 at 3:43 PM, Ankireddypalle Reddy <areddy at commvault.com> > wrote: > > Pranith, > > Thanks. Does it mean that a given file can be written by > only one client at a time. If multiple clients try to access the file in > write mode, does it lead to any kind of data inconsistencies. > > > > We only tested it for single writer cases such as VM usecases. We need to > bring in transaction framework for sharding to work with multiple writers. > > > > > > Thanks and Regards, > > Ram > > *From:* Pranith Kumar Karampuri [mailto:pkarampu at redhat.com] > *Sent:* Thursday, May 04, 2017 6:07 AM > *To:* Ankireddypalle Reddy > *Cc:* Gluster Devel (gluster-devel at gluster.org); gluster-users at gluster.org > *Subject:* Re: [Gluster-devel] Enabling shard on EC > > > > It is never been tested. That said, I don't see any missing pieces that we > know of for it to work. Please note that sharding works only for single > writer cases at the moment. Do let us know if you find any problems and we > will fix them. > > > > On Wed, May 3, 2017 at 2:17 PM, Ankireddypalle Reddy <areddy at commvault.com> > wrote: > > Hi, > > Are there any known negatives of enabling shard on EC. Is this a > recommended configuration?. > > > > Thanks and Regards, > > Ram > > > > > > ***************************Legal Disclaimer*************************** > > "This communication may contain confidential and privileged material for > the > > sole use of the intended recipient. Any unauthorized review, use or > distribution > > by others is strictly prohibited. If you have received the message by > mistake, > > please advise the sender by reply email and delete the message. Thank you." > > ********************************************************************** > > > _______________________________________________ > Gluster-devel mailing list > Gluster-devel at gluster.org > http://lists.gluster.org/mailman/listinfo/gluster-devel > > > > > -- > > Pranith > > ***************************Legal Disclaimer*************************** > > "This communication may contain confidential and privileged material for > the > > sole use of the intended recipient. Any unauthorized review, use or > distribution > > by others is strictly prohibited. If you have received the message by > mistake, > > please advise the sender by reply email and delete the message. Thank you." > > ********************************************************************** > > > > > -- > > Pranith > ***************************Legal Disclaimer*************************** > "This communication may contain confidential and privileged material for > the > sole use of the intended recipient. Any unauthorized review, use or > distribution > by others is strictly prohibited. If you have received the message by > mistake, > please advise the sender by reply email and delete the message. Thank you." > ********************************************************************** >-- Pranith -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.gluster.org/pipermail/gluster-users/attachments/20170504/3f0e26ec/attachment.html>
Krutika Dhananjay
2017-May-05 06:23 UTC
[Gluster-users] [Gluster-devel] Enabling shard on EC
Hi, Work is in progress for this (and going a bit slow at the moment because of other priorities). At the moment we support sharding only for VM image store use-case - most common large file + single writer use case we know of. Just curious, what is the use case where you want to use shard+EC? -Krutika On Thu, May 4, 2017 at 4:05 PM, Pranith Kumar Karampuri <pkarampu at redhat.com> wrote:> +Krutika > > Krutika started work on this. But it is very long term. Not a simple thing > to do. > > On Thu, May 4, 2017 at 3:53 PM, Ankireddypalle Reddy <areddy at commvault.com > > wrote: > >> Pranith, >> >> Thanks. Is there any work in progress to add this >> support. >> >> >> >> Thanks and Regards, >> >> Ram >> >> *From:* Pranith Kumar Karampuri [mailto:pkarampu at redhat.com] >> *Sent:* Thursday, May 04, 2017 6:17 AM >> >> *To:* Ankireddypalle Reddy >> *Cc:* Gluster Devel (gluster-devel at gluster.org); >> gluster-users at gluster.org >> *Subject:* Re: [Gluster-devel] Enabling shard on EC >> >> >> >> >> >> >> >> On Thu, May 4, 2017 at 3:43 PM, Ankireddypalle Reddy < >> areddy at commvault.com> wrote: >> >> Pranith, >> >> Thanks. Does it mean that a given file can be written by >> only one client at a time. If multiple clients try to access the file in >> write mode, does it lead to any kind of data inconsistencies. >> >> >> >> We only tested it for single writer cases such as VM usecases. We need to >> bring in transaction framework for sharding to work with multiple writers. >> >> >> >> >> >> Thanks and Regards, >> >> Ram >> >> *From:* Pranith Kumar Karampuri [mailto:pkarampu at redhat.com] >> *Sent:* Thursday, May 04, 2017 6:07 AM >> *To:* Ankireddypalle Reddy >> *Cc:* Gluster Devel (gluster-devel at gluster.org); >> gluster-users at gluster.org >> *Subject:* Re: [Gluster-devel] Enabling shard on EC >> >> >> >> It is never been tested. That said, I don't see any missing pieces that >> we know of for it to work. Please note that sharding works only for single >> writer cases at the moment. Do let us know if you find any problems and we >> will fix them. >> >> >> >> On Wed, May 3, 2017 at 2:17 PM, Ankireddypalle Reddy < >> areddy at commvault.com> wrote: >> >> Hi, >> >> Are there any known negatives of enabling shard on EC. Is this a >> recommended configuration?. >> >> >> >> Thanks and Regards, >> >> Ram >> >> >> >> >> >> ***************************Legal Disclaimer*************************** >> >> "This communication may contain confidential and privileged material for >> the >> >> sole use of the intended recipient. Any unauthorized review, use or >> distribution >> >> by others is strictly prohibited. If you have received the message by >> mistake, >> >> please advise the sender by reply email and delete the message. Thank >> you." >> >> ********************************************************************** >> >> >> _______________________________________________ >> Gluster-devel mailing list >> Gluster-devel at gluster.org >> http://lists.gluster.org/mailman/listinfo/gluster-devel >> >> >> >> >> -- >> >> Pranith >> >> ***************************Legal Disclaimer*************************** >> >> "This communication may contain confidential and privileged material for >> the >> >> sole use of the intended recipient. Any unauthorized review, use or >> distribution >> >> by others is strictly prohibited. If you have received the message by >> mistake, >> >> please advise the sender by reply email and delete the message. Thank >> you." >> >> ********************************************************************** >> >> >> >> >> -- >> >> Pranith >> ***************************Legal Disclaimer*************************** >> "This communication may contain confidential and privileged material for >> the >> sole use of the intended recipient. Any unauthorized review, use or >> distribution >> by others is strictly prohibited. If you have received the message by >> mistake, >> please advise the sender by reply email and delete the message. Thank >> you." >> ********************************************************************** >> > > > > -- > Pranith >-------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.gluster.org/pipermail/gluster-users/attachments/20170505/47dedc99/attachment.html>