Re: [Users] Shortest guide about running OpenVZ containers on top of ZFS
Hello! I created comparison table for answer to your question: https://github.com/pavel-odintsov/OpenVZ_ZFS/blob/master/openvz_storage_backends.md On Wed, Nov 12, 2014 at 7:10 PM, Scott Dowdle dow...@montanalinux.org wrote: Greetings, - Original Message - Tonight I tested and prepared very short and reliable guide about running OpenVZ container on top of best-ever-and-ever-zettabyte-filesystem ZFS. You can find manual here: https://github.com/pavel-odintsov/OpenVZ_ZFS/blob/master/OpenVZ_containers_on_zfs_filesystem.md Any questions/suggestions/performance test and other feedback are welcome here or on GitHub! How well does ploop work? ploop has been the default container filesystem for a while now. TYL, -- Scott Dowdle 704 Church Street Belgrade, MT 59714 (406)388-0827 [home] (406)994-3931 [work] ___ Users mailing list Users@openvz.org https://lists.openvz.org/mailman/listinfo/users -- Sincerely yours, Pavel Odintsov ___ Users mailing list Users@openvz.org https://lists.openvz.org/mailman/listinfo/users
Re: [Users] Shortest guide about running OpenVZ containers on top of ZFS
Well, good beginning, but.. as we discussed earlier: in most cases of hosting purposes users need quotes. And quotes work only with ext4. So the only real possible case of usage is ploop over zfs and the only good reason to have zfs here is l2arc cache on ssd or large amount SSD disks in raidz3 over iSCSI... ..and there are still no speed tests. 12.11.2014 15:20, Pavel Odintsov пишет: Any questions/suggestions/performance test and other feedback are welcome here or on GitHub! -- Best Regards, Nick Knutov http://knutov.com ICQ: 272873706 Voice: +7-904-84-23-130 ___ Users mailing list Users@openvz.org https://lists.openvz.org/mailman/listinfo/users
Re: [Users] Shortest guide about running OpenVZ containers on top of ZFS
Thank you for suggestion! Just added! On Wed, Nov 12, 2014 at 9:20 PM, CoolCold coolthec...@gmail.com wrote: I think you should add some links for general zfs-on-linux with openvz install / setup guide, to help people who will be inspired by your readme On Wed, Nov 12, 2014 at 1:20 PM, Pavel Odintsov pavel.odint...@gmail.com wrote: Hello, everyone! Tonight I tested and prepared very short and reliable guide about running OpenVZ container on top of best-ever-and-ever-zettabyte-filesystem ZFS. You can find manual here: https://github.com/pavel-odintsov/OpenVZ_ZFS/blob/master/OpenVZ_containers_on_zfs_filesystem.md Any questions/suggestions/performance test and other feedback are welcome here or on GitHub! Thank you! -- Sincerely yours, Pavel Odintsov ___ Users mailing list Users@openvz.org https://lists.openvz.org/mailman/listinfo/users -- Best regards, [COOLCOLD-RIPN] ___ Users mailing list Users@openvz.org https://lists.openvz.org/mailman/listinfo/users -- Sincerely yours, Pavel Odintsov ___ Users mailing list Users@openvz.org https://lists.openvz.org/mailman/listinfo/users
Re: [Users] Shortest guide about running OpenVZ containers on top of ZFS
Scott Dowdle mailto:dow...@montanalinux.org Wednesday, November 12, 2014 2:48 PM Greetings, - Original Message - Performance issues aren't the only problem ploop solves... it also solves the changing inode issue. When a container is migrated from one host to another with simfs, inodes will change... and some services don't like that. Also because the size of a ploop disk image is fixed (although changeable), the fixed size acts as a quota... so you get your quota back if you turned it off. For me, unless something changes, ZFS isn't a starter because almost no one ships with it because of licensing issues. --- I'm assuming ZFS wouldn't have the inode issue if you used the ZFS functions in your migration. If you decided to use ZFS, you should probably use snapshotting, send, and receive during the migration rather than using vzmigrate. ZFS isn't going to be a drop-in replacement if you want to get the most out of it. The problem I have with it is the performance issues. During testing, I have had a lot of random performance issues and write overhead. ZoL (ZFS on Linux) just doesn't seem stable enough yet. Sincerely, Devon ___ Users mailing list Users@openvz.org https://lists.openvz.org/mailman/listinfo/users
Re: [Users] Shortest guide about running OpenVZ containers on top of ZFS
When you need quotes and there is only one way to get them... I don't think ploop is about to solve ext4 troubles. I's just solve some troubles (which are common to a lot of file systems). ZFS in this case is more alternative to Parallels Cloud Storage which is closed source and hard to get even for money (I contacted Parallels sales several times and never got the pricelist from them). Also, ZFS is good in case of NAS with large amount of SSDs or usual disks with l2arc cache on SSD. And you can use ploop over ZFS in this case. I suppose ploop over glusterfs (for example) and most of others file system with any redundancy (I mean any realization of raid idea) will be more pain then usable solution, for comparison. 13.11.2014 0:25, Pavel Odintsov пишет: Hello, Nick! Ploop is really useless for ZFS because it solves ext4 troubles and ZFS haven't this issues by design. Quotes maybe problems, good addition. I just added remark about quotes to comparison table. On Wed, Nov 12, 2014 at 9:56 PM, Nick Knutov m...@knutov.com wrote: Well, good beginning, but.. as we discussed earlier: in most cases of hosting purposes users need quotes. And quotes work only with ext4. So the only real possible case of usage is ploop over zfs and the only good reason to have zfs here is l2arc cache on ssd or large amount SSD disks in raidz3 over iSCSI... ..and there are still no speed tests. 12.11.2014 15:20, Pavel Odintsov пишет: Any questions/suggestions/performance test and other feedback are welcome here or on GitHub! -- Best Regards, Nick Knutov http://knutov.com ICQ: 272873706 Voice: +7-904-84-23-130 ___ Users mailing list Users@openvz.org https://lists.openvz.org/mailman/listinfo/users -- Best Regards, Nick Knutov http://knutov.com ICQ: 272873706 Voice: +7-904-84-23-130 ___ Users mailing list Users@openvz.org https://lists.openvz.org/mailman/listinfo/users
Re: [Users] Shortest guide about running OpenVZ containers on top of ZFS
Parallels Cloud Storage is not an real filesystem in old filesystems terms, it based on ext4 locally and provides only remote features like redundancy and multi level caching. On Wed, Nov 12, 2014 at 11:40 PM, Nick Knutov m...@knutov.com wrote: When you need quotes and there is only one way to get them... I don't think ploop is about to solve ext4 troubles. I's just solve some troubles (which are common to a lot of file systems). ZFS in this case is more alternative to Parallels Cloud Storage which is closed source and hard to get even for money (I contacted Parallels sales several times and never got the pricelist from them). Also, ZFS is good in case of NAS with large amount of SSDs or usual disks with l2arc cache on SSD. And you can use ploop over ZFS in this case. I suppose ploop over glusterfs (for example) and most of others file system with any redundancy (I mean any realization of raid idea) will be more pain then usable solution, for comparison. 13.11.2014 0:25, Pavel Odintsov пишет: Hello, Nick! Ploop is really useless for ZFS because it solves ext4 troubles and ZFS haven't this issues by design. Quotes maybe problems, good addition. I just added remark about quotes to comparison table. On Wed, Nov 12, 2014 at 9:56 PM, Nick Knutov m...@knutov.com wrote: Well, good beginning, but.. as we discussed earlier: in most cases of hosting purposes users need quotes. And quotes work only with ext4. So the only real possible case of usage is ploop over zfs and the only good reason to have zfs here is l2arc cache on ssd or large amount SSD disks in raidz3 over iSCSI... ..and there are still no speed tests. 12.11.2014 15:20, Pavel Odintsov пишет: Any questions/suggestions/performance test and other feedback are welcome here or on GitHub! -- Best Regards, Nick Knutov http://knutov.com ICQ: 272873706 Voice: +7-904-84-23-130 ___ Users mailing list Users@openvz.org https://lists.openvz.org/mailman/listinfo/users -- Best Regards, Nick Knutov http://knutov.com ICQ: 272873706 Voice: +7-904-84-23-130 ___ Users mailing list Users@openvz.org https://lists.openvz.org/mailman/listinfo/users -- Sincerely yours, Pavel Odintsov ___ Users mailing list Users@openvz.org https://lists.openvz.org/mailman/listinfo/users
Re: [Users] Shortest guide about running OpenVZ containers on top of ZFS
Nick Knutov mailto:m...@knutov.com Wednesday, November 12, 2014 3:40 PM ZFS in this case is more alternative to Parallels Cloud Storage which is closed source and hard to get even for money (I contacted Parallels sales several times and never got the pricelist from them). Also, ZFS is good in case of NAS with large amount of SSDs or usual disks with l2arc cache on SSD. And you can use ploop over ZFS in this case. I suppose ploop over glusterfs (for example) and most of others file system with any redundancy (I mean any realization of raid idea) will be more pain then usable solution, for comparison. I don't think you can just run ploop over ZFS. Ploop requires ext4 as the host filesystem according to bug 2277: https://bugzilla.openvz.org/show_bug.cgi?id=2277 ___ Users mailing list Users@openvz.org https://lists.openvz.org/mailman/listinfo/users
Re: [Users] Shortest guide about running OpenVZ containers on top of ZFS
Oh. I missed this. 13.11.2014 2:28, Devon B. пишет: I don't think you can just run ploop over ZFS. Ploop requires ext4 as the host filesystem according to bug 2277: https://bugzilla.openvz.org/show_bug.cgi?id=2277 -- Best Regards, Nick Knutov http://knutov.com ICQ: 272873706 Voice: +7-904-84-23-130 ___ Users mailing list Users@openvz.org https://lists.openvz.org/mailman/listinfo/users
