Questions tagged [scsi]
The scsi tag has no usage guidance.
146 questions
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Unique device path for generic SCSI device /dev/sgX
[This is on Debian 12]
To fully access my DVD drive, I need to also know its SCSI generic path (/dev/sgX) in addition to its expected CDROM-/dev/srX path.
The specific device is important, though, and ...
- 113
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How to change hard disk bus type NVMe to SCSI in VMWare Fusion?
I use Rocky Linux and have to change my hard disk bus type but then my booting failed. However, it runs normally when i select the bus type NVMe.
Boot failed
How do i solve this? Should i make a new ...
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1
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22
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How to Prevent USB Reset After Suspend on iMX6 Board?
I am working on an iMX6ULL board running a Debian-based OS with suspend capabilities. A USB hub (USB2514) is connected to the USB bus. When a single device or two devices with different VID and PID ...
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2
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1
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Unable to boot Solaris from external scsi cd drive on a Sun Blade 150
I am trying to boot Solaris 8 from external scsi CD-ROM drive Yamaha 8/8/24 on a Sun blade 150 through Open Boot. Its scsi ID is set to 6.
probe-scsi-all reports that the CD drive is at: /pci@1f,0/pci@...
- 131
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80
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Can't dd broken SSD
When trying to sudo dd if=/dev/sda of=dump.dd conv=noerror,sync on my Kingston SSD (SA400S37/120G, SBFK71E0) the dmesg log shows the following:
usb 4-4: new SuperSpeed USB device number 8 using ...
- 11
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1
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104
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smartctl & device type mismatch
I will keep it short, I am trying to better understand the different standards of storage type interfaces, but the output of smartctl is confusing me a little. Is this an actual problem in my system (...
- 191
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22
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Replicating 'udisks power-off' behavior (without udisks)
udisks exists for regular users, root must (and is) able to live without it, I need help figuring out how.
The goal is to do exactly what
udisks power-off /dev/sdX
does without udisks. hdparm is out ...
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0
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75
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How to limit the number of blocks written or read in a Write_10 or Read command on Linux?
Here is the problem: My usb storage device has a 64kB (limited by hardware) buffer used to cache reads/writes which means it can only cache up to 128 blocks(512B) of memory. The SCSI Write-10 command ...
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1
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43
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Clear SCSI Log Pages
I am using a couple SAS SSDs. A while ago I started a "background long test" on one of them, unfortunately there was a blackout and the test was therefore interrupted.
After the power was ...
- 574
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155
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Naming of SAS block devices under /dev/disk/by-id?
When one uses SATA SSDs or HDDs under Linux, they can be addressed in numerous ways, like for example:
/dev/sda
/dev/disk/by-id/ata-TOSHIBA_MG05ACA800E_78LBK8P7FUUD
/dev/disk/by-id/wwn-...
- 574
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45
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systemtap script to simulate the IO error failed
I was trying to simulate the read/write error on specific sectors of the volumes by using the following systemtap script
global error_sector_start
global error_sector_end
global error_major
...
- 1
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124
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What is the purpose of the symbolic device file named with the HCTL address in the bsg folder
"/dev/bsg – This folder is for Block Scsi Generic drivers." I'm not sure what that means.
There are two symbolic device files named with HCTL addresses in that folder, but from what is ...
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iSCSI LIO target - how to resize lun?
What are the steps to resize a lun which is currently attached to an initiator? I mostly interested to know how to do that for file-based luns.
- 539
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sg_format Low Level Format Interrupted - Kernel Errors
I was going through a sg_format low-level format from 520-byte to 4096 native byte sectors - during the process, the system lost power and the server went down hard. Now in the the kernel, I'm getting ...
- 121
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176
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Gparted enable more logging
I cannot find a way for Gparted to produce more informative logs in the manual. What I am looking for is to find out why exactly did e cartain I/O operation fail (more details about the SCSI command ...
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How to find the SCSI ID of a disk in QTS?
Normally, in Linux, one can use lsscsi to map disk devices to their SCSI ID:
# lsscsi -d
[N:0:4:1] disk SAMSUNG MZVLB1T0HBLR-000L7__1 /dev/nvme0n1 [259:0]
[N:1:5:1] disk ...
- 747
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2
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328
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No way to pass to virtual machine this old scsi controller?
I have sucessfully passed to vm pci-e and pci pure devices.
I want to pass a scsi controller to a vm
the controller is seen by the os
06:06.0 SCSI storage controller [0100]: BusLogic BT-946C (BA80C30) ...
- 13.2k
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1
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40
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Is my SCSI controller faulty?
I have connected an old pci buslogic SCSI (i need for retrocomputing experiment)
lspci said
06:06.0 Non-VGA unclassified device [0000]: BusLogic Device [104b:0150]
No driver loaded, no disk ...
- 13.2k
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487
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USB drive error SCSI cache
just recognized an unknown error, as i checked my actual log with journalctl -f.
When i unmounted my Backup-USB-disk with unmount /path/to/disk and then pulled the cable out, a short noise occured ...
- 131
2
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404
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How to blacklist some scsi devices via a kernel parameter?
I need to tell kernel to completely ignore some SCSI devices (eg. from vendor 'PURE'). I see libata.force=x.yy:disable can be used for individual SATA devices, but I need something equivalent for SCSI ...
- 539
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2
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4k
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LVM VG/LV is not activated at system startup
I have two multipath devices configured
mpathb (36005076300808b3e9000000000000007) dm-1 IBM,2145
size=16T features='1 queue_if_no_path' hwhandler='1 alua' wp=rw
|-+- policy='service-time 0' prio=50 ...
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linux scsi: Unit Not Ready, Sense Key, Hardware Error
I have attached a USB device which is an enclosure for an NVMe M.2 storage unit. Both devices, the enclosure and the media, had been known to be in working order during their last use.
When I connect ...
- 340
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50
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Optical drive suffering from chronic premature ejection
My slot-loading optical drive (HP BDDVDRW CA21N) spins and up and then ejects every disc, a process that takes about 15 seconds. I've found lots of posts on enabling wanted ejects, but close to ...
- 413
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327
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sas drive i/o error 5 via raid card - sed locked partition table
I am trying to find a better way to access my newly purchased SAS drives (deepdiscountserver 3tb IBM platters(used or refurb i think yes)), using a 2x4 LSI PCIe3 card. I think the card is only half ...
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561
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How to check if LSI20320IE is working without LTO TAPE in Ubuntu 20.04 LTS
I have done a lspci -vv to check if my Driver for the LSI20320IE SCSI Controller ( Data-Sheet ) is correct installed. (The LSI-drivers are from here MPTLINUX_RHEL4_SLES9_PH14-3.13.04.00-2.zip and I ...
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95
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Unable to get scsi device path (st) device path for IBM LTO7 drives
when we execute the lsscsi -g |grep -i ult command we get list of all LTO7 drives of IBM company.
here we are able to see the st path for the drives.
no scsi id's generated for lto7 drives.
its ...
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287
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Why the subsystem of a SATA device is scsi?
By doing udevadm info -a /dev/sda
we can see something like:
looking at parent device '/devices/pci0000:3d/0000:3d:02.0/0000:60:00.0/host6/port-6:0/end_device-6:0/target6:0:0/6:0:0:0':
KERNELS==&...
- 935
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How the h c t l numbers read from in lsscsi?
When doing lsscsi:
$lsscsi
[0:0:2:0] disk FUJITSU MAM3184MP 0105 /dev/sda
[1:0:0:0] cd CREATIVE CD5233E 1.00 /dev/scd0
In my understanding:
H : SCSI host id
C : SCSI channel
T : Target Number
L : ...
- 935
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Tape readable with scsitape but not dd or tar, why?
I just installed an Exabyte tape drive:
$ lsscsi -g
[11:0:0:0] process Marvell 91xx Config 1.01 - /dev/sg0
[12:0:1:0] cd/dvd TOSHIBA CD-ROM XM-3401TA 0283 /dev/sr0 /dev/sg1
[...
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add new disk in /etc/tgt/targets.conf and reload without affect other disks/initiator hosts
I have added a new disk to the server:
[root@ns1 tgt]# lsblk |grep sdh
sdh 8:112 0 600M 0 disk
Also, I have created a new entry for /dev/sdh in /etc/tgt/targets.conf
[root@ns1 tgt]# cat /...
- 459
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350
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Monitoring the activity of tape drive with SCSI generic driver (sg)
I would like to monitor statistics (transfer rate, byte/sec) for each LTO tape drive connected to Linux system. I understand that tapestat command can exactly do this, but this shows the activity of ...
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What does mean host in lsscsi command?
A notebook has only one SSD (without CDROM drive)
if I take a look at /proc/scsi/scsi it outpus:
Host: scsi2 Channel: 00 Id: 00 Lun: 00
Vendor: ATA Model: KINGSTON SUV500M Rev: 56RI
Type: ...
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dmesg shows 0 512-byte logical blocks
Last week I unfortunatly dropped by external HDD drive and it wouldn't spin up anymore. I got other backups, so I thoughed I opened it up so see whats wrong. The read/write head was stuck and damaged, ...
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2
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460
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Parallel SCSI target mode - how to make Linux/BSD behave like a hard drive?
I use many old parallel SCSI(-1/-2) devices (many "Fast SCSI-2", 10MB/s, 8 bit wide), which I want to attach to a modern computer via a classic Adaptec PCI SCSI host adapter in "target ...
- 31
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142
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Linux + how to simulate JBOD disks that are out of service in shelf
We have Kafka machines installed with RHEL 7.2 servers on Dell HW and a shelf includes 15 disks.
We want to understand what happens when we push out one of the Kafka disks, and see if Kafka is still ...
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488
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QEMU virtio-scsi: Cannot see the number of queues after booting VM with virtio-scsi command
QEMU newbie here. I am trying to boot a VM using QEMU, for increased performance I am trying to use a virtio-scsi mounted drive. I am following the steps given here. However when I boot my VM and I ...
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1
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Testing LTO drive with mt and dd
Here are my commands
mt -f /dev/st0 rewind
dd if=/dev/st0 of=-
As I understand it the first command rewinds my tape in /dev/st0, and the second command writes contents of /dev/st0 to -. My questions ...
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How do you determine the remaning capacity of a magnetic tape with mt or tar? How much space is in a block?
I am currently trying to back up data onto an LTO-4 tape using mt-st
and gnu tar 1.32, but I want to make sure I stop trying to copy things before the tape runs out! LTO-4 nominally has a capacity of ...
- 232
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4
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2k
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SATA disk drive behind Adaptec RAID 5405 can't be detected as block device
Due to shortage of free built-in SATA 3.0 plugs (6 totally) on my motherboard (Gigabyte 970A-DS3 rev.3) I've got an Adaptec RAID 5405 (3G SAS/SATA RAID) to move all "slow" SATA 1.0/2.0 ...
- 141
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177
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Can't see /proc/scsi/sg folder in the Yocto file system
I'm using a Yocto image on an iMX6 SoC ev-board and I would like to write a C code to access the USB storage device via sg driver.
Since I need to access the logical blocks of the storage directly ...
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276
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SCSI Host number persitence
I have two identical VM servers in VMware. I want to somehow distinguish assigned disk to these VMs (disks for LVM, for DB data, ...).
But for some reason H:C:T:L addresses on these hosts differ.
[...
- 141
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225
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Cannot suspend because cdrom_id and udevd are in uninterruptible sleep
I upgraded the Linux kernel on my Gentoo Linux system from 4.9.76 to 5.4.38 about two weeks ago. Since then, my dvd drive will stop spinning up when I insert a dvd and my laptop can no longer suspend ...
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FAILED Result: hostbyte=DID_SOFT_ERROR driverbyte=DRIVER_OK
What does it mean DID_SOFT_ERROR?
According to kernel source, it defined:
#define DID_SOFT_ERROR 0x0b /* The low level driver just wish a retry */
https://github.com/torvalds/linux/blob/...
- 737
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746
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virsh attach-disk only work with name vd* instead of sd*
I have an qcow2 image and want to attach another disk to it.
# create new qcow2 disk
qemu-img create -f qcow2 vm-disk2 500G
Then I attach it as sdb:
virsh attach-disk myvm /var/lib/libvirt/images/...
- 1,835
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86
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scsi_host interconnects
Can you please explain storage interconnects with respect to Linux. What are exactly scsi_host0, host1, host2, etc. I recently checked on a VM that had around 39 hosts present in /sys/class/scsi_hosts/...
- 9
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0
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101
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How does a block device driver handle IO errors
When a block device gets a request to read a range of sectors, and one of those sectors has a read failure, how does the driver signal to the kernel that a partial read is available, and that the ...
- 713
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1
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3k
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sd 5:0:0:0: [sda] Attached SCSI disk, what are these four numbers? Will they change?
I can usually see this log in dmesg:
sd 5:0:0:0: [sda] Attached SCSI disk
Can you please explain what are these 4 numbers?
Will these numbers change after reboot? or it should be constant?
- 737
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237
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How to identify the disks of a Linux virtual machine in VMware vSphere 6
I have a virtualized RHEL7 server with vsphere 6, I need to remove some virtual disks from vCenter that are presented to my virtual machine (rhel server) that are no longer being used by the operating ...
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3
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2k
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SCSI: SAN or local disk?
I have a Debian 9 running.
It has a SSD connected as well as a fibrechannel link to a SAN storage.
As far I see both are visible as /dev/sdX devices.
How can I find out what is the disk and what is ...
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193
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how to make sure SCSI is properly freed
I have external SSD that I want to safely remove (as part of automation):
lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
loop0 7:0 0 89.3M 1 loop /snap/core/...
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