> From:
>
> "Steven Hartland" <killing@xxxxxxxxxxxxxxx>
>
> To:
>
> "Patrick Dung" <patrick_dkt@xxxxxxxxxxxx>,
> <Ivailo.TANUSHEFF@xxxxxxxxxxxxx>, "Michael Schmiedgen" <schmiedgen@xxxxxxx>,
>
> Cc:
>
> <owner-freebsd-fs@xxxxxxxxxxx>, <freebsd-fs@xxxxxxxxxxx>, <pgsql-
> admin@xxxxxxxxxxxxxx>, <freebsd-jail@xxxxxxxxxxx>
>
> Date:
>
> 25.10.2013 19:20
>
> Subject:
>
> Re: [ADMIN] ZFS-FreeBSD + postgresql performance
>
> ----- Original Message -----
> From: "Patrick Dung" <patrick_dkt@xxxxxxxxxxxx>
> Sent: Friday, October 25, 2013 4:53 PM
> Subject: Re: [ADMIN] ZFS-FreeBSD + postgresql performance
>
>
> >> I would also recommend to use 4K sector size using
> >
> > gnop and zpool export/import.
>
> This will have no effect, the ashift for a pool is set at creation.
>
> Regards
> Steve
>
That's the idea: to set the ashift during the creation of the pool. Never did that before?
gnop create -S4096/dev/gpt/disk0
gnop create -S4096/dev/gpt/disk1
zpool create mirror /dev/gpt/disk0.nop /dev/gpt/disk1.nop
zpool exportzroot
gnop destroy /dev/gpt/disk0.nop
gnop destroy /dev/gpt/disk1.nop
zpool import zroot
Best regards,
Ivailo Tanusheff
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пзтбойюеойе об пфзпчптопуффб: уЯДЯТЦБОЙЕФП ОБ ФПЧБ ЕМЕЛФТПООП УЯПВЭЕОЙЕ Е РТЕДОБЪОБЮЕОП ЕДЙОУФЧЕОП ЪБ РПУПЮЕОЙС РПМХЮБФЕМ. уЯПВЭЕОЙЕФП УЯДЯТЦБ ЙОЖПТНБГЙС, ЛПСФП НПЦЕ ДБ ВЯДЕ РТЕДОБЪОБЮЕОБ ЪБ ПЗТБОЙЮЕОП РПМЪЧБОЕ Й/ЙМЙ РПЧЕТЙФЕМОБ. ч УМХЮБК ЮЕ ОЕ УФЕ ХЛБЪБОЙС РПМХЮБФЕМ ОБ ФПЧБ УЯПВЭЕОЙЕ ЙМЙ ОЕЗПЧ ПФПТЙЪЙТБО РТЕДУФБЧЙФЕМ, ОСНБФЕ РТБЧП ДБ ЗП ЛПРЙТБФЕ ЙМЙ ЙЪРПМЪЧБФЕ, ЛБЛФП Й ДБ ТБЪЛТЙЧБФЕ УЯДЯТЦБОЙЕФП НХ РТЕД ФТЕФЙ МЙГБ. бЛП УФЕ ЗП РПМХЮЙМЙ РП ЗТЕЫЛБ, НПМС ДБ ХЧЕДПНЙФЕ РПДБФЕМС ОЕЪБВБЧОП Й ДБ ЙЪФТЙЕФЕ ФПЧБ УЯПВЭЕОЙЕ ПФ УЙУФЕНБФБ. еМЕЛФТПООЙФЕ УЯПВЭЕОЙС, ТБЪРТПУФТБОСЧБОЙ РП йОФЕТОЕФ НПЗБФ ДБ ВЯДБФ РТПНЕОСОЙ. тБКЖБКЪЕОВБОЛ (вЯМЗБТЙС) ебд, тБКЖБКЪЕО бУЕФ нЕОЙДЦНЯОФ (вЯМЗБТЙС) ебд, тБКЖБКЪЕО ъБУФТБИПЧБФЕМЕО вТПЛЕТ еппд, тБКЖБКЪЕО уЯТЧЙУЙЪ ебд, тБКЖБКЪЕО мЙЪЙОЗ вЯМЗБТЙС ппд, тБКЖБКЪЕО бХФП мЙЪЙОЗ вЯМЗБТЙС еппд Й тБКЖБКЪЕО йНПФЙ еппд ОЕ ОПУСФ ПФЗПЧПТОПУФ ЪБ НПДЙЖЙГЙТБОЙ, РТПНЕОЕОЙ ЙМЙ ЖБМЫЙЖЙГЙТБОЙ УЯПВЭЕОЙС.
