Since there have been so many recent discussions about what disabling
the ZIL does (via the zil_disable tuneable), we've decided to put up a
blog that's easy to reference instead of searching through countless emails:
http://blogs.sun.com/erickustarz/entry/zil_disable
I plan another one on NFS
Hello Neil,
Tuesday, August 8, 2006, 3:54:31 PM, you wrote:
NP> Robert Milkowski wrote:
>> Hello Neil,
>>
>> Monday, August 7, 2006, 6:40:01 PM, you wrote:
>>
>> NP> Not quite, zil_disable is inspected on file system mounts.
>>
>> I guess you right that umount/mount will suffice - I just hadn'
Robert Milkowski wrote:
Hello Eric,
Monday, August 7, 2006, 6:29:45 PM, you wrote:
ES> Robert -
ES> This isn't surprising (either the switch or the results). Our long term
ES> fix for tweaking this knob is:
ES> 6280630 zil synchronicity
ES> Which would add 'zfs set sync' as a per-dataset op
Robert Milkowski wrote:
Hello Neil,
Monday, August 7, 2006, 6:40:01 PM, you wrote:
NP> Not quite, zil_disable is inspected on file system mounts.
I guess you right that umount/mount will suffice - I just hadn't time
to check it and export/import worked.
Anyway is there a way for file systems
Hello Neil,
Monday, August 7, 2006, 6:40:01 PM, you wrote:
NP> Not quite, zil_disable is inspected on file system mounts.
I guess you right that umount/mount will suffice - I just hadn't time
to check it and export/import worked.
Anyway is there a way for file systems to make it active without
Hello Eric,
Monday, August 7, 2006, 6:29:45 PM, you wrote:
ES> Robert -
ES> This isn't surprising (either the switch or the results). Our long term
ES> fix for tweaking this knob is:
ES> 6280630 zil synchronicity
ES> Which would add 'zfs set sync' as a per-dataset option. A cut from the
ES>
Not quite, zil_disable is inspected on file system mounts.
It's also looked at dynamically on every write for zvols.
Neil.
Robert Milkowski wrote On 08/07/06 10:07,:
Hello zfs-discuss,
Just a note to everyone experimenting with this - if you change it
online it has only effect when pools a
Robert -
This isn't surprising (either the switch or the results). Our long term
fix for tweaking this knob is:
6280630 zil synchronicity
Which would add 'zfs set sync' as a per-dataset option. A cut from the
comments (which aren't visible on opensolaris):
sync={deferred,standard,forc
Hello zfs-discuss,
Just a note to everyone experimenting with this - if you change it
online it has only effect when pools are exported and then imported.
ps. I didn't use for my last posted benchmarks - with it I get about
35,000IOPS and 0.2ms latency - but it's meaningless.
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