Date: Fri, 13 Oct 2000 16:22:43 +0100 From: dbhague@allstor-sw.co.uk To: freebsd-scsi@FreeBSD.org, freebsd-fs@FreeBSD.org Cc: gibbs@scsiguy.com, mjacob@feral.com, Andre Albsmeier <andre.albsmeier@mchp.siemens.de>, smcintyre@allstor-sw.co.uk Subject: Re: Stressed SCSI subsystem locks up the system Message-ID: <80256977.00547AA1.00@mail.plasmon.co.uk>
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--0__=mZjquYhAa8G9OyczsaJpisLOuvEaEGyp4GnaiBByZ8HIwBAbgYVvxKvI Content-type: text/plain; charset=us-ascii Content-Disposition: inline This is increasingly looking like a filesystem issue. We have done some more testing on the 4.1 build. We believe the issues with 4.1 are different to the ones with 3.0. Due to the age of 3.0 we have decide to forget about it and concentrate on the 4.1 issues. We have two 4.1 test systems; one failed with the following on the console > dev #da/3 block=0 fs=/RAID blocks >panic ffs_blkfree freeing free frags >syncing disk The system was locked in this state and was ping-able but we could not telnet in. The other system is still running after two days. This is the longest a test has run. The only difference we can see between the systems is the way the filesystem was built. This was built by > dd if=/dev/zero of=/dev/rda0 count=2048 > disklabel -Brw da0 auto > disklabel -e da0 > newfs /dev/rda0d normally this is done in a script which effectively does > disklabel -rw da0 auto > dd if=/dev/zero of=/dev/rda0 count=2048 > disklabel -rw da0 auto > "disklabel" | disklabel -rR da0 > newfs /dev/rda0d The only real difference is the -B option in disklabel. We do not attempt to boot from this partition so this should not matter. Let me know what you think ? Regards Dave For the sake of Freebsd-fs subscribers: For your information we are a small software company, just south of Cambridge UK, and have a thin server that is running FreeBSD. We are developing a storage system which controls a RAID system and automatically archives the data to optical jukeboxes or tape libraries. Basically HSM in a box. The system is as follows: Single board computer, AMD K6-II, 128MB RAM, Adaptec AHA 3940AU Intel Ethernet Pro 100 This is attached to a RAID system although we have had the same failure with a single SCSI drive. I enclose the test script and the source for the main test program. tmcp.c. The test is started with "golongmulti 7" If you require any further information please ask, or give me a call +44-1763-264-474. Thanks Dave (See attached file: tmcp.c)(See attached file: golong)(See attached file: golongmulti)(See attached file: go) --0__=mZjquYhAa8G9OyczsaJpisLOuvEaEGyp4GnaiBByZ8HIwBAbgYVvxKvI Content-type: application/octet-stream; name="tmcp.c" Content-Disposition: attachment; filename="tmcp.c" Content-transfer-encoding: base64 LyogJFJldmlzaW9uOiAxLjIxICQgKi8KCgojaW5jbHVkZSA8c3lzL3R5cGVzLmg+CiNpbmNsdWRl IDxmY250bC5oPgojaW5jbHVkZSA8c3lzL3N0YXQuaD4KI2luY2x1ZGUgPHN0ZGlvLmg+CiNpbmNs dWRlIDxlcnJuby5oPgojaW5jbHVkZSA8dGltZS5oPgojaW5jbHVkZSA8c3RyaW5nLmg+CiNpbmNs dWRlIDxzdGRsaWIuaD4KCiNpZiBkZWZpbmVkKE9TMikgfHwgZGVmaW5lZChXSU5OVCkKI2luY2x1 ZGUgPGlvLmg+CiNpbmNsdWRlIDx3aW5kb3dzLmg+CiNpbmNsdWRlIDxkaXJlY3QuaD4KI2RlZmlu ZSBzdHJjYXNlY21wIHN0cmljbXAKI2RlZmluZSBzdGF0ICAgICAgIF9zdGF0CiNkZWZpbmUgdW5s aW5rICAgICBfdW5saW5rCiNkZWZpbmUgcmVhZCAgICAgICBfcmVhZAojZGVmaW5lIGxzZWVrICAg ICAgX2xzZWVrCiNkZWZpbmUgVElNRSBfX2ludDY0CgojZWxzZQoKI2RlZmluZSBIQVNfR0VUVElN 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