Il 26/07/2012 10:31, Frediano Ziglio ha scritto: > sudo ./x86_64-softmmu/qemu-system-x86_64 -m 1024 -hda test.qcow > -device lsi -drive file=/dev/sdb,if=none,id=XXX -device > scsi-block,drive=XXX -enable-kvm -bios ~/seabios/out/bios.bin -serial > file:out.txt > lsi_scsi: error: Multiple IO pending for request 0x7fd1075bf100 > qemu-system-x86_64: /home/fredianoz/qemu/hw/lsi53c895a.c:774: > lsi_do_command: Assertion `s->current == ((void *)0)' failed. > > (sometimes I don't get the "Multiple IO ending" line). > > I'm using a recent SeaBIOS which support booting from LSI SCSI. > > Qemu version > > $ git branch -v > * master 61dc008 Revert "audio: Make PC speaker audio card available by > default" > > I'm using SeaBIOS commit 9d6bac1d32b72cdf7c0ad009c1371a2e69084de3 > (some minor changes in order to support 4k sectors).
Can you share them? 4k sectors are not supported by BIOS at all AFAIK... Does virtio-scsi work with those changes? > Adding some debugging to SeaBIOS lsi code seems that drivers send > initial INQUIRY request but after that all requests have some problems > and lead to a lot of reset command. Can you gather tracing output for the following events: scsi_req_data scsi_req_dequeue scsi_req_parsed scsi_req_parse_bad scsi_req_build_sense scsi_inquiry scsi_test_unit_ready (Perhaps you can also instrument scsi_req_cancel for tracing). The timing doesn't matter, so you can use the stderr backend: --enable-trace-backend=stderr Place the above list in a file (one tracepoint per line) and then start QEMU with -trace events=/path/to/file.txt. You could also try github.com/bonzini/qemu.git, branch scsi-next (it shouldn't fix anything, but I added a couple more assertions). Paolo
