On Mon, Dec 23, 2013 at 05:35:23AM -0800, Manfred Antar wrote: > At 11:31 PM 12/22/2013, you wrote: > >On Sun, Dec 22, 2013 at 09:54:49AM -0800, Manfred Antar wrote: > >> The change to vfs_bio.c in revision 259200 breaks writing to scsi tape drive on i386 and sparc64 on current. > >> I don't have any other machines to test on. > >> here is example: > >> > >> r259199: > >> (/)4794}mt rew > >> (/)4795}tar cvf /dev/sa0 kernel > >> a kernel > >> > >> r259200: > >> (/)4781}mt rew > >> (/)4782}tar cvf /dev/sa0 kernel > >> a kerneltar: Write error > >> > >> the changes between the two revisions: > >> line 3682 removed: > >> > >> bp->b_resid = bip->bio_resid; /* XXX: remove */ > >> > >> I noticed this when trying to do a dump and getting end of tape error. > >> tried different tape drives , different cables no change. > >> backed out r259200 to 259199 and everything works as before. > >> Manfred > > > >Show me the kdump of the tar commands on both revisions. > > > > It will take me a few hours, back to work today. > Same thing happens with dump too. > The Tape drives are SCSI Quantum DLT used on both machines i386 and sparc64 (Sun Netra) > using version 258174 of vfs_bio.c on current kernels, I was able to do a full dump of both machines without a problem. > The error is when trying to read or write to the tape drive. > What is the exact command for kdump that you want ? > I can do it when I get home this afternoon. > Thanks > Manfred > ktrace -i tar ... kdump -s >some.file I need some.file.
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