[zfs-discuss] Re: System pause peculiarity with mysql on zfs

2006-12-07 Thread Anton B. Rang
This does look like the ATA driver bug rather than a ZFS issue per se. (For the curious, the reason ZFS triggers this when UFS doesn't is because ZFS sends a synchronize cache command to the disk, which is not handled in DMA mode by the controller; and for this particular controller, switching

Re: [zfs-discuss] Re: System pause peculiarity with mysql on zfs

2006-12-07 Thread Jason J. W. Williams
That's gotta be what it is. All our MySQL IOP issues have gone away one we moved to RAID-1 from RAID-Z. -J On 12/7/06, Anton B. Rang [EMAIL PROTECTED] wrote: This does look like the ATA driver bug rather than a ZFS issue per se. (For the curious, the reason ZFS triggers this when UFS doesn't

Re: [zfs-discuss] Re: System pause peculiarity with mysql on zfs

2006-12-07 Thread Dale Ghent
On Dec 7, 2006, at 6:14 PM, Anton B. Rang wrote: This does look like the ATA driver bug rather than a ZFS issue per se. Yes indeed. Well, that answers that. FWIW, I'm hour 2 of a mysql configure script run. Yow! (For the curious, the reason ZFS triggers this when UFS doesn't is because

Re: [zfs-discuss] Re: System pause peculiarity with mysql on zfs

2006-12-07 Thread Jason J. W. Williams
Hi Dale, For what its worth, the SX releases tend to be pretty stable. I'm not sure if snv_52 has made a SX release yet. We ran for over 6 months on SX 10/05 (snv_23) with no downtime. Best Regards, Jason On 12/7/06, Dale Ghent [EMAIL PROTECTED] wrote: On Dec 7, 2006, at 6:14 PM, Anton B.