Date: Tue, 3 Feb 2004 15:25:47 +1100 From: Lachlan O'Dea <odela01@ca.com> To: current@freebsd.org Subject: Re: dump/mksnap_ffs - ufs2 deadlockss Message-ID: <0A35CCFC-5601-11D8-9D5F-000A95DBB47C@ca.com> In-Reply-To: <20040201182824.S10185@alpha.siliconlandmark.com> References: <20040201182824.S10185@alpha.siliconlandmark.com>
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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 02 Feb 2004, at 10:51, Andre Guibert de Bruet wrote: > Hi, > > I guess I'm running into a string of problems with ufs2 across my > systems. > This deadlock is 100% reproduceable across all of my systems with > Adaptec > and LSI RAID controllers. I tried to dump a live ufs2 system using: > > /sbin/dump -0uaL -f "/usr/backups/`hostname -s`-raid5.dump" /mnt/amrd0a > > and I get a mksnap_ffs process in the following state after about a > minute > of moderate disk activity: > > 18312 root -4 0 1196K 744K ufs 1 0:04 0.00% 0.00% > mksnap_ffs [snip db output] > This looks strangely like the getblk() hangs that I have seen on this > system but it's the first time that I've come across the ufs() state on > the hung process(es). > > Any ideas? :-) I believe the getblk and ufs hangs are related. I get find/makewhatis hanging on getblk as previously described and also see exactly the same problem you do with dump. It think find sometimes hangs on ufs as well. I have a PERC 3/Di, which is the aac device. The volume is RAID 5. So it seems that SCSI RAID is a common factor for this problem, not a particular driver. - -- Lachlan O'Dea Computer Associates Senior Software Engineer tel: +61 3 8416 5627 fax: +61 3 8416 5810 mobile: +61 412 390 650 odela01@ca.com Relax and enjoy your shoes! -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.3 (Darwin) iD8DBQFAHyLLoBZahcUBONoRAs2aAKCcELGdgGCQn6L2EGACd+q20yip/gCgjP4a DmXWDLcwzl6Veg+Ia0IM440= =F1+K -----END PGP SIGNATURE-----
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