Ted Mittelstaedt wrote:
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of Bart
Silverstrim
Sent: Monday, September 24, 2007 7:05 PM
To: Ted Mittelstaedt
Cc: Chris Boyd; freebsd-questions@freebsd.org
Subject: Re: Update on data corruption with Tyan/3Ware
Ted Mittelstaedt wrote:
3ware is supported by the manufacturer - what do they say?
Ted
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of Chris Boyd
Sent: Monday, September 24, 2007 2:54 PM
To: freebsd-questions@freebsd.org
Subject: Update on data corruption with Tyan/3Ware
Here's an update on my odd problem. Thanks to Don B for some hints
that helped us start looking in a better directions.
System is a Tyan Thunder K8SE motherboard with dual Opteron 250
2.4GHz CPUs and a 3Ware 9550SX-4LP PCI Express four port RAID
controller running in RAID 5. Disks are 4x Seagate 500GB SATA. 4GB
Memory.
Latest BIOS and firmware on mobo and RAID controller.
FreeBSD 6.2 AMD64 with all patches as of 9-21-2007
We've narrowed the problem down to files that are > 4GB. Anytime we
have a file that's > 4GB, we get inconsistent checksums, can't
uncompress it, etc. Files < 4GB are fine.
So is this a RAID controller issue? A filesystem problem? All hints
appreciated.
How are you getting the files on the system? Network transfer? Direct
copy from a disc?
What filesystem is it you're using?
3ware is well supported under Linux, from what I can tell and what I've
experienced, and can't imagine that a manufacturer with a good track
record of driver support for Linux for so long would not support FreeBSD
as well.
Bart and Chris,
The problem might be that the 3ware driver uses a 32 bit "int" to
represent
a file size. In FreeBSD, stat() ftruncate() lseek() and
friends which are based on "strut stat" had this limitation under FreeBSD
4.xx.
Note line# 821 of twe_freebsd.c the driver:
sc->twed_disk->d_maxsize = (TWE_MAX_SGL_LENGTH - 1) * PAGE_SIZE;
sc->twed_disk->d_sectorsize = TWE_BLOCK_SIZE;
sc->twed_disk->d_mediasize = TWE_BLOCK_SIZE *
(off_t)sc->twed_drive->td_size;
sc->twed_disk->d_fwsectors = sc->twed_drive->td_sectors;
that off_t also appears elsewhere.
I'm not a driver programmer but I'd bet the driver hasn't been updated
for 64 bit FreeBSD.
A) Holy @[EMAIL PROTECTED] job and thank you for pointing that out! :-)
B) Does that mean that this would affect all 3Ware products on FreeBSD,
or only when running the 64 bit OS? I believe I am storing 4+ gig files
on a Linux system with a 3Ware controller in it and to my knowledge
there hasn't been any problems with it.
Sorry if it's a silly question...I'm not a programmer.
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