Re: [zfs-discuss] ZIL reliability/replication questions

2007-10-24 Thread Roch - PAE
This should work. It shouldn't even lose the in-flight transactions. ZFS reverts to using the main pool if a slog write fails or the slog fills up. So, the only way to lose transactions would be a crash or power loss, leaving outstanding transactions in the log, followed by the

Re: [zfs-discuss] ZIL reliability/replication questions

2007-10-22 Thread Scott Laird
On 10/18/07, Neil Perrin [EMAIL PROTECTED] wrote: The umem one is unavailable, but the Gigabyte model is easy to find. I had Amazon overnight one to me, it's probably sitting at home right now. Cool let us know how it goes. Not so well. I was completely unable to get the card to work

Re: [zfs-discuss] ZIL reliability/replication questions

2007-10-22 Thread Will Murnane
On 10/22/07, Scott Laird [EMAIL PROTECTED] wrote: Oct 20 12:50:54 fs2 ahci: [ID 632458 kern.warning] WARNING: ahci_port_reset: port 1 the device hardware has been initialized and the power-up diagnostics failed IIRC, Gigabyte cheaped out and didn't implement SMART. Thus, everything that tries

[zfs-discuss] ZIL reliability/replication questions

2007-10-18 Thread Scott Laird
I'm debating using an external intent log on a new box that I'm about to start working on, and I have a few questions. 1. If I use an external log initially and decide that it was a mistake, is there a way to move back to the internal log without rebuilding the entire pool? 2. What happens if

Re: [zfs-discuss] ZIL reliability/replication questions

2007-10-18 Thread Neil Perrin
Scott Laird wrote: I'm debating using an external intent log on a new box that I'm about to start working on, and I have a few questions. 1. If I use an external log initially and decide that it was a mistake, is there a way to move back to the internal log without rebuilding the entire

Re: [zfs-discuss] ZIL reliability/replication questions

2007-10-18 Thread Scott Laird
On 10/18/07, Neil Perrin [EMAIL PROTECTED] wrote: Scott Laird wrote: I'm debating using an external intent log on a new box that I'm about to start working on, and I have a few questions. 1. If I use an external log initially and decide that it was a mistake, is there a way to move

Re: [zfs-discuss] ZIL reliability/replication questions

2007-10-18 Thread Neil Perrin
Scott Laird wrote: On 10/18/07, Neil Perrin [EMAIL PROTECTED] wrote: Scott Laird wrote: I'm debating using an external intent log on a new box that I'm about to start working on, and I have a few questions. 1. If I use an external log initially and decide that it was a mistake, is there

Re: [zfs-discuss] ZIL reliability/replication questions

2007-10-18 Thread Scott Laird
On 10/18/07, Neil Perrin [EMAIL PROTECTED] wrote: So, the only way to lose transactions would be a crash or power loss, leaving outstanding transactions in the log, followed by the log device failing to start up on reboot? I assume that that would that be handled relatively cleanly (files

Re: [zfs-discuss] ZIL reliability/replication questions

2007-10-18 Thread Eric Schrock
On Thu, Oct 18, 2007 at 02:29:27PM -0600, Neil Perrin wrote: So, the only way to lose transactions would be a crash or power loss, leaving outstanding transactions in the log, followed by the log device failing to start up on reboot? I assume that that would that be handled relatively

Re: [zfs-discuss] ZIL reliability/replication questions

2007-10-18 Thread Neil Perrin
Scott Laird wrote: On 10/18/07, Neil Perrin [EMAIL PROTECTED] wrote: So, the only way to lose transactions would be a crash or power loss, leaving outstanding transactions in the log, followed by the log device failing to start up on reboot? I assume that that would that be handled