| To: | "Ralf G. R. Bergs" <rabe@xxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: external log config [was: Million files or so on RAID 5 Partition] |
| From: | "Martin K. Petersen" <mkp@xxxxxxx> |
| Date: | 06 Mar 2002 08:38:44 -0500 |
| Cc: | "linux-xfs@xxxxxxxxxxx" <linux-xfs@xxxxxxxxxxx>, "Simon Matter" <simon.matter@xxxxxxxxxxxxxxxx> |
| In-reply-to: | <E16iWJe-0006l3-00@xxxxxxxxxxxxxxxxxxxxxxxxxxxx> |
| Organization: | mkp.net |
| References: | <E16iWJe-0006l3-00@xxxxxxxxxxxxxxxxxxxxxxxxxxxx> |
| Sender: | owner-linux-xfs@xxxxxxxxxxx |
| User-agent: | Gnus/5.0808 (Gnus v5.8.8) XEmacs/21.4 (Civil Service) |
>>>>> "Ralf" == Ralf G R Bergs <rabe@xxxxxxxxxxxxxx> writes: Ralf> On Wed, 06 Mar 2002 08:11:55 +0100, Simon Matter wrote: >> I have made several performance tests some time ago. I learnt that, >> while it's imporant to have external log Ralf> Is it ALWAYS advisable to have an external log (I mean even on Ralf> hardware RAIDs,) or does this only apply to software RAIDs Ralf> (LVM)? It only applies to Linux software RAID5. It is due to the way the latter implements stripe caching. See http://oss.sgi.com/projects/xfs/mail_archive/0202/msg00329.html -- Martin K. Petersen, Principal Linux Consultant, Linuxcare, Inc. mkp@xxxxxxxxxxxxx, http://www.linuxcare.com/ SGI XFS for Linux Developer, http://oss.sgi.com/projects/xfs/ |
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