Re: [Gluster-users] Improving IOPS

On Sat, Nov 5, 2016 at 6:20 AM, Gandalf Corvotempesta < gandalf.corvotempe...@gmail.com> wrote: > 2016-11-05 12:06 GMT+01:00 Lindsay Mathieson >: > > Yah, I get that. For me willing to risk loosing the entire gluster node > and > > having to resync it, I see the

Re: [Gluster-users] help

On 11/05/2016 05:47 AM, Fariborz Mafakheri wrote: Hi all, I have a gluster volume with 4 bricks(srv1, srv2, srv3 and srv4). srv2 is replicate of srv1 and srv3 is replicate of srv3. each of this bricks has 1.7TB data. I am gonna replace srv2 and srv4 ​ with two new servers(srvP2 and srvP4).

Re: [Gluster-users] Improving IOPS

> > On Nov 5, 2016, at 3:52 AM, Lindsay Mathieson > wrote: > Cache is hardly used, I think you'll find with VM workload you're only > getting around 4% hit rates. You're better off using the SSD for slog, it > improves sync writes consdierably. > > I tried the

[Gluster-users] help

Hi all, I have a gluster volume with 4 bricks(srv1, srv2, srv3 and srv4). srv2 is replicate of srv1 and srv3 is replicate of srv3. each of this bricks has 1.7TB data. I am gonna replace srv2 and srv4 ​ with two new servers(srvP2 and srvP4). srvP2 and srvP4 are in another datacenter and as I said

Re: [Gluster-users] Improving IOPS

On 5/11/2016 9:20 PM, Gandalf Corvotempesta wrote: I don't see any advantage doing a single RAIDz10, only drawbacks. With multiple RAIDZ1 you get the same space, same features and same performances as a single RAIDZ10 but much more availability and safety for your data. Better local IOPS,

Re: [Gluster-users] Improving IOPS

On 4/11/2016 9:15 PM, Xavier Hernandez wrote: I haven't tested it, but if you are current saturating the network, maybe enabling the network.compression option might help, though it will use more CPU. There are also some compression related options that can be tweaked. Looks like it still

Re: [Gluster-users] Improving IOPS

2016-11-05 12:06 GMT+01:00 Lindsay Mathieson : > Yah, I get that. For me willing to risk loosing the entire gluster node and > having to resync it, I see the odds as pretty low vs just losing one disk in > the RAID10 set and resilvering it locally. I don't see any

Re: [Gluster-users] Improving IOPS

On 5/11/2016 9:02 PM, Gandalf Corvotempesta wrote: Ok, I wasn't clear enough. Do you have a single RAIDZ10 or multiple RAIDZ1 ? Single RAIODZ10, one brick per node In a single RAIDZ10, if you totally loose a mirror (thus, both disks from the same RAIDZ1 set), you loose the whole RAID10.

Re: [Gluster-users] Improving IOPS

On 5/11/2016 8:17 PM, mabi wrote: Just noticed that you have your ZFS logs on a single disk, you like living dangerously ;-) a you should have a mirror for the slog to be on the safe side. Because I like living on the edge :) I do have the gluster bricks for the ultimate recovery, but also

Re: [Gluster-users] Improving IOPS

On 5/11/2016 7:02 PM, Gandalf Corvotempesta wrote: With gluster, healing should be faster in case of failure. If you loose a mirror, you have to resilver the whole RAID-10 from network, by using ZFS and RAID-10 With gluster, if you loose a mirror, you have to heal only that one. Six of one,

Re: [Gluster-users] Improving IOPS

Hi Lindsay Just noticed that you have your ZFS logs on a single disk, you like living dangerously ;-) a you should have a mirror for the slog to be on the safe side. Cheers, M. Original Message Subject: Re: [Gluster-users] Improving IOPS Local Time: November 5, 2016

Re: [Gluster-users] Improving IOPS

2016-11-05 9:52 GMT+01:00 Lindsay Mathieson : > pool: tank > config: > NAME STATE READ WRITE CKSUM > tank ONLINE 0 0 0 > mirror-0 ONLINE 0 0 0 > ata-WDC_WD6000HLHX-01JJPV0_WD-WX41E81ZU901 ONLINE

Re: [Gluster-users] Improving IOPS

On 5/11/2016 1:30 AM, Darrell Budic wrote: What’s your CPU and disk layout for those? You’re close to what I’m running, curious how it compares. All my nodes are running RAIDZ10. I have SSD 5GB slog partion, 100GB Cache Cache is hardly used, I think you'll find with VM workload you're only

[Gluster-users] Filesystem Snapshots

Hi everybody, do you know if there is any possibility to use filesystem snapshots (e.g. btrfs or zfs) with GlusterFS? For us the LVM snapshot mechanism is not feasible, because we will need too many snapshots and we need a filesystem with compression. How do you realize snapshot