Re: [zfs-discuss] ZFS: unreliable for professional usage?

2009-02-13 Thread David Collier-Brown
spot for This pool was not unmounted cleanly due to a hardware fault and data has been lost. The name of timestamp line contains the date which can be recovered to. Use the command # zfs reframbulocate this that -t timestamp to revert to timestamp --dave -- David Collier-Brown

Re: [zfs-discuss] Does your device honor write barriers?

2009-02-10 Thread David Collier-Brown
, much less Infinite) c-b -- David Collier-Brown| Always do right. This will gratify Sun Microsystems, Toronto | some people and astonish the rest dav...@sun.com | -- Mark Twain cell: (647) 833-9377, bridge: (877) 385-4099 code: 506 9191

Re: [zfs-discuss] ZFS core contributor nominations

2009-02-03 Thread David Collier-Brown
://mail.opensolaris.org/mailman/listinfo/zfs-discuss -- David Collier-Brown| Always do right. This will gratify Sun Microsystems, Toronto | some people and astonish the rest dav...@sun.com | -- Mark Twain cell: (647) 833-9377, bridge: (877) 385-4099

Re: [zfs-discuss] Why is st_size of a zfs directory equal to the

2009-01-14 Thread David Collier-Brown
folks find it on? --dave (an external consultant, these days) c-b -- David Collier-Brown| Always do right. This will gratify Sun Microsystems, Toronto | some people and astonish the rest dav...@sun.com | -- Mark Twain cell: (647) 833-9377

Re: [zfs-discuss] Tuning for a file server, disabling data cache (almost)

2008-10-17 Thread David Collier-Brown
also had to narrow a stripe for the particular load being discussed... --dave -- David Collier-Brown| Always do right. This will gratify Sun Microsystems, Toronto | some people and astonish the rest [EMAIL PROTECTED] | -- Mark Twain cell: (647

[zfs-discuss] Sidebar re ABI stability (was Segmentation fault / core dump)

2008-10-01 Thread David Collier-Brown
, back when I was an employee. --dave (who's a contractor) c-b -- David Collier-Brown| Always do right. This will gratify Sun Microsystems, Toronto | some people and astonish the rest [EMAIL PROTECTED] | -- Mark Twain cell: (647) 833-9377

Re: [zfs-discuss] Sidebar to ZFS Availability discussion

2008-09-01 Thread David Collier-Brown
Collier-Brown| Always do right. This will gratify Sun Microsystems, Toronto | some people and astonish the rest [EMAIL PROTECTED] | -- Mark Twain cell: (647) 833-9377, bridge: (877) 385-4099 code: 506 9191

[zfs-discuss] Sidebar to ZFS Availability discussion

2008-08-31 Thread David Collier-Brown
(at home) c-b -- David Collier-Brown| Always do right. This will gratify Sun Microsystems, Toronto | some people and astonish the rest [EMAIL PROTECTED] | -- Mark Twain cell: (647) 833-9377, bridge: (877) 385-4099 code: 506 9191

Re: [zfs-discuss] Supermicro AOC-SAT2-MV8 hang when drive removed

2008-07-29 Thread David Collier-Brown
/ ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss -- David Collier-Brown| Always do right. This will gratify Sun Microsystems, Toronto

Re: [zfs-discuss] [zfs-code] Peak every 4-5 second

2008-07-25 Thread David Collier-Brown
://milek.blogspot.com ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss -- David Collier-Brown| Always do

Re: [zfs-discuss] [zfs-code] Peak every 4-5 second

2008-07-24 Thread David Collier-Brown
. *** ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss -- David Collier-Brown| Always do right. This will gratify Sun Microsystems, Toronto | some people and astonish the rest [EMAIL

Re: [zfs-discuss] OT: Formatting Problem of ZFS Adm Guide (pdf)

2008-07-23 Thread David Collier-Brown
important consideration IMO. :-) This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss -- David Collier-Brown| Always do

Re: [zfs-discuss] ZFS deduplication

2008-07-08 Thread David Collier-Brown
as the checksum algorithm would be much more interesting. I'm going to try that now and see how it compares with fletcher2 for a small contrived test. -- David Collier-Brown| Always do right. This will gratify Sun Microsystems, Toronto | some people and astonish the rest

[zfs-discuss] Some basic questions about getting the best performance for database usage

2008-06-30 Thread David Collier-Brown
. --dave -- David Collier-Brown| Always do right. This will gratify Sun Microsystems, Toronto | some people and astonish the rest [EMAIL PROTECTED] | -- Mark Twain (905) 943-1983, cell: (647) 833-9377, (800) 555-9786 x56583 bridge: (877) 385-4099

Re: [zfs-discuss] Some basic questions about getting the best performance for database usage

2008-06-30 Thread David Collier-Brown
David Collier-Brown wrote: ZFS copy-on-write results in tables' contents being spread across the full width of their stripe, which is arguably a good thing for transaction processing performance (or at least can be), but makes sequential table-scan speed degrade. If you're doing

Re: [zfs-discuss] Issue with simultaneous IO to lots of ZFS pools

2008-05-01 Thread David Collier-Brown
, I'm also volunteering to help provide it: I'm not a storage or ZFS guy, but I am an author, and will happily help my Smarter Colleagues[tm] to write it up. -- David Collier-Brown| Always do right. This will gratify Sun Microsystems, Toronto | some people and astonish the rest

Re: [zfs-discuss] Issue with simultaneous IO to lots of ZFS pools

2008-05-01 Thread David Collier-Brown
workload without cutting into performance. --dave -- David Collier-Brown| Always do right. This will gratify Sun Microsystems, Toronto | some people and astonish the rest [EMAIL PROTECTED] | -- Mark Twain (905) 943-1983, cell: (647) 833-9377, (800

Re: [zfs-discuss] How many ZFS pools is it sensible to use on a single server?

2008-04-15 Thread David Collier-Brown
We've discussed this in considerable detail, but the original question remains unanswered: if an organization *must* use multiple pools, is there an upper bound to avoid or a rate of degradation to be considered? --dave -- David Collier-Brown| Always do right. This will gratify