RE: question about scsi generic behavior

Well, Hardcoding of block size to 512 bytes for disk devices is what currently either the block device driver or the sd driver is doing. Because, if I run dd to the same device using the corresponding block device (sde) it runs fine. So, I feel that either the sg driver or the block device dri

question about scsi generic behavior

Hi List, I am trying to use sg_dd which goes through the scsi generic driver. This is how use it. sg_dd if=/dev/zero of=/dev/sg5 bs=4096 count=1 And sg5 is actually a disk. The question that I have is, does the scsi generic driver have a knowledge about what kind of device it is dealing with

host_byte = DID_BAD_TARGET : how is this handled

Hi List, I was going through the 2.4.2/2.4.4 scsi error handling and scsi_done routine. I could not figure out how the scsi layer handles the DID_BAD_TARGET status in the host-byte of result that is returned by low-level driver. It looks like, DID_BAD_TARGET is not being handled at all in th

is cpqfc driver enabled for 2.4.x kernel

Hi List, Is Compaq's cpqfc driver enabled for 2.4.x kernel ? In the drivers/scsi/Config.in file there is an entry for this driver, but the drivers/scsi/Makefile does not know how to build this driver. The sources are present in the drivers/scsi directory, but don't know how to build it. Regards

BDR and multiple cmds to single device (new error handling)

Hi List, In the scsi_unjam_host(), after issueing a Bus Device Reset (scsi_try_bus_device_reset()), we just restart only one command to the device. What about other commands which are issued to the same device and not completed yet ? Shouldn't they be restarted ? There is the following comment b

scsi_try_to_abort_command failed

Hi List, I was looking at scsi_error.c In the scsi_unjam_host(), we call scsi_try_to_abort_command() which calls eh_abort_handler(), now, if somehow the lowlevel driver cannot abort the command successfully, then it can return FAILED status. Well, in scsi_unjam_host() there is a case for doing ce

problem with scsi/2.4.2 kernel : help

Hi List, I am running a couple of dd processes on the scsi drives on ia64 running 2.4.2 kernel. e.g. while [ 1 ]; do dd if=/dev/zero of=/dev/sdb1 bs=1024 count=2500 done & while [ 1 ] ; do dd if=/dev/zero of=/dev/sdb2 bs=1024 count=2500 done & while [ 1 ] ; do dd if=/dev/zero of=/dev/sdb

killing a process writing to a scsi drive freezes a system

Hi List, I tried to do dd to a bunch of scsi drives running in background. e.g. dd if=/dev/zero of=/dev/sdb bs=1024 & dd if=/dev/zero of=/dev/sdc bs=1024 & dd if=/dev/zero of=/dev/sdd bs=1024 & Then I tried to kill the first dd process writing to /dev/sdb and it freezes up the system.

Calling scsi_done from queuecommand()

Hi list, Can we call scsi_done() to complete the I/O from the queuecommand() ? (e.g. in case of some error, or to make queuecommand synchronous). Regards, -hiren - To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to [EMAIL PROTECTED]

RE: scsi_unjam_host and scsi_try to abort_command

sym53c8xx driver tries to lock io_request_lock before calling done routine. Also, scsi mid-layer routine scsi_done tries to acquire the same lock. Won't the system hang at that point ? -hiren > -Original Message- > From: Gérard Roudier [mailto:[EMAIL PROTECTED]] > Sent: Saturday, Februa

rescanning the scsi-bus

Hi List, Is it possible to force linux scsi layer to rescan the devices on a scsi_bus ? Are there any application/ioctls available which can do this ? Regards, -hiren - To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to [EMAIL PROTECTED]

module in a subdirectory under drivers/scsi

Hi list, I want to create a subdirectory under scsi for my module. The tree that I want to create a something like this: drivers/scsi/xxx drivers/scsi/xxx/lib drivers/scsi/xxx/my_hba_driver Basically the files in lib get compiled and linked together which ultimately gets linked with the file in

support for medium changers/tape-library

Greetings. Any idea when the support for medium changer or tape-library will be available in linux ? As I understand the scsi.c and st.c does not recognize medium changer devices. Regards, -hiren - To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to

RE: scsi_unjam_host and scsi_try to abort_command

Here, to release the io_request_lock, should I use spin_unlock_irqrestore() or just spin_unlock() ? The problem with using spin_unlock_irqrestore() is that it needs the previously saved value of flags, which I don't have in the low level driver. If I just use spin_unlock(), then the interrupts wi

RE: scsi_unjam_host and scsi_try to abort_command

There is one problem here (atleast I think, unless I misunderstood something). The scsi_error_handler() routine calls spin_lock_irqsave() before calling scsi_unjam host(). On UP system atleast, spin_lock_irqsave() is nothing but save_flags(); cli(). So basically, do we disable all the interrupts

scsi_unjam_host and scsi_try to abort_command

Hi All, I was looking at the scsi_error.c and in particular at the scsi_unjam_host() routine. It calls scsi_try_to_abort_command which calls eh_abort_handler() routine of the hba driver. We are passing timeout to the scsi_try_to_abort_command(). But we don't seem to making use of it. Shouldn't

RE: how to issue a FORMAT_UNIT command

Hi All, I received many responses on FORMAT_UNIT command. I really appreciate. Does anybody know, why fdisk is dumping core if partition table is bad ? Thanks and regards, -hiren > -Original Message- > From: Robin T. Miller [mailto:[EMAIL PROTECTED]] > Sent: Wednesday, January 24, 2001

RE: QLogic ISP2x00 problem

I tried this driver and on my qlogic ISP2100 I am getting the following error. I am not sure what is going on. Is there something wrong with the card ? qla2x00: detect() found an HBA qla2x00: VID=1077 DID=2100 SSVID=0 SSDID=0 (scsi): Found a QLA2100 @ bus 5, device 1, irq 80, iobase 0xf800 scsi(

RE: QLogic ISP2x00 problem

where can I find ISP2x00 driver for kernel 2.4.0 running on ia64 ? Thanks and regards, -hiren > -Original Message- > From: Craig Ruff [mailto:[EMAIL PROTECTED]] > Sent: Friday, January 19, 2001 9:03 AM > To: Klaus Naumann > Cc: [EMAIL PROTECTED] > Subject: Re: QLogic ISP2x00 problem > >