[zfs-discuss] RealNeel : ZFS and DB performance

2007-02-09 Thread Roch - PAE
It's just a matter of time before ZFS overtakes UFS/DIO for DB loads, See Neel's new blog entry: http://blogs.sun.com/realneel/entry/zfs_and_databases_time_for -r ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolari

Re: [zfs-discuss] Peculiar behavior of snapshot after zfs receive

2007-02-09 Thread Trevor Watson
Thanks Robert, that did the trick for me! Robert Milkowski wrote: Hello Wade, Thursday, February 8, 2007, 8:00:40 PM, you wrote: TW> Am I using send/recv incorrectly or is there something else going on here that TW> I am missing? It's a known bug. umount and rollback file system on host

[zfs-discuss] Re: ZFS multi-threading

2007-02-09 Thread Reuven Kaswin
The experiment was on a V240. Throughput wasn't the issue in our test; CPU utilization seemed to drop by approx. 50% after turning checksum off. The concern was in potentially running out of CPU horsepower to support multiple parallel sequential writes. This message posted from opensolaris.o

[zfs-discuss] Re: ZFS multi-threading

2007-02-09 Thread Reuven Kaswin
Thanks for that info. I validated with a simple experiment on a Niagara machine, by viewing 'mpstat' that no more than 2-3 threads were being saturated by my large block sequential write test. This message posted from opensolaris.org ___ zfs-discuss

Re: [zfs-discuss] ZFS multi-threading

2007-02-09 Thread Carisdad
I've seen very good performance on streaming large files to ZFS on a T2000. We have been looking at using the T2000 as a disk storage unit for backups. I've been able to push over 500MB/s to the disks. Setup is EMC Clariion CX3 with 84 500GB SATA drives connected w/ 4Gbps all the way to the d

Re: [zfs-discuss] Re: ZFS multi-threading

2007-02-09 Thread Tomas Ă–gren
On 09 February, 2007 - Reuven Kaswin sent me these 0,4K bytes: > Thanks for that info. I validated with a simple experiment on a > Niagara machine, by viewing 'mpstat' that no more than 2-3 threads > were being saturated by my large block sequential write test. And on, say 32 parallel writes? /T

Re: [zfs-discuss] ENOSPC on full FS (was: Meta data corruptions on ZFS.)

2007-02-09 Thread Matthew Ahrens
dudekula mastan wrote: Hi All, In my test set up, I have one zpool of size 1000M bytes. On this zpool, my application writes 100 files each of size 10 MB. First 96 files were written successfully with out any problem. But the 97 file is not written successfully , it written only 5 MB (th

Re: [zfs-discuss] Read Only Zpool: ZFS and Replication

2007-02-09 Thread Matthew Ahrens
Ben Rockwood wrote: What I really want is a Zpool on node1 open and writable (production storage) and a replicated to node2 where its open for read-only access (standby storage). We intend to solve this problem by using zfs send/recv. You can script up a "poor man's" send/recv solution today