Date: Fri, 18 Dec 2009 20:27:03 +1030 From: "Daniel O'Connor" <doconnor@gsoft.com.au> To: freebsd-current@freebsd.org Cc: Alexander Zagrebin <alexz@visp.ru>, Phil Murray <pmurray@nevada.net.nz> Subject: Re: 8.0-RELEASE: disk IO temporarily hangs up (ZFS or ATA related problem) Message-ID: <200912182027.11632.doconnor@gsoft.com.au> In-Reply-To: <6FAA390A-1E40-4D7A-AAD5-DC72578CE974@nevada.net.nz> References: <39309F560B98453EBB9AEA0F29D9D80E@vosz.local> <4C1C2598-4157-4B04-8DB8-C84F353AB8B8@nevada.net.nz> <6FAA390A-1E40-4D7A-AAD5-DC72578CE974@nevada.net.nz>
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[-- Attachment #1 --] On Fri, 18 Dec 2009, Phil Murray wrote: > >> May be a problem is in ata? WD15EADS is a "green" series of > >> drives. > > > > The WD green drives have a feature called Time Limited Error > > Recovery where the disk can spend several minutes trying to read a > > bad block etc. > > > > It plays havoc with RAID arrays which is why WD recommend you don't > > use the green drives in arrays. They have more info about the > > "feature" in the WD FAQ/knowledgebase > > Sorry, TLER is the feature that 'fixes' the problem, see: > > http://wdc.custhelp.com/cgi-bin/wdc.cfg/php/enduser/std_adp.php?p_faq >id=1397&p_created=1131638613&p_sid=vfyE1KPj&p_accessibility=0&p_redire >ct=&p_srch=1&p_lva=&p_sp=cF9zcmNoPTEmcF9zb3J0X2J5PSZwX2dyaWRzb3J0PSZwX >3Jvd19jbnQ9MTcsMTcmcF9wcm9kcz0yMjcsMjk0JnBfY2F0cz0mcF9wdj0yLjI5NCZwX2N >2PSZwX3BhZ2U9MSZwX3NlYXJjaF90ZXh0PXJhaWQ!&p_li=&p_topview=1 > > > Sounds like your drive is going into the recovery procedure... I doubt this is the problem, I have WD10EADS disks in my ZFS array and I see the same issue. It strikes me as extremely unlikely that both of us would have dud disks.. In any case it seems to be a general problem not limited to one area of the disk so a dud sector is an unlikely reason. -- Daniel O'Connor software and network engineer for Genesis Software - http://www.gsoft.com.au "The nice thing about standards is that there are so many of them to choose from." -- Andrew Tanenbaum GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.12 (FreeBSD) iD8DBQBLK1H35ZPcIHs/zowRArlcAJ9e1qVw7m9AwYHxTULbjKXxwBp5fQCfSVwl wi08jaz4deTvKb0fReGmJ38= =ixAF -----END PGP SIGNATURE-----
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