Here is the output of dmesg without doing anything with the disk: [ 7632.544792] usb 2-2: new SuperSpeed USB device number 2 using xhci_hcd [ 7632.575851] usb 2-2: New USB device found, idVendor=152d, idProduct=b567, bcdDevice= 2.23 [ 7632.575856] usb 2-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 7632.575858] usb 2-2: Product: USB3.0 to SATA adapter [ 7632.575860] usb 2-2: Manufacturer: JMicron [ 7632.575861] usb 2-2: SerialNumber: 0000AB123531 [ 7632.636013] usbcore: registered new interface driver usb-storage [ 7632.655897] scsi host4: uas [ 7632.656277] usbcore: registered new interface driver uas [ 7632.656480] scsi 4:0:0:0: Direct-Access Samsung SSD 860 EVO 500G 0223 PQ: 0 ANSI: 6 [ 7632.657492] sd 4:0:0:0: Attached scsi generic sg2 type 0 [ 7632.657753] sd 4:0:0:0: [sdb] Spinning up disk... [ 7633.694677] ...ready [ 7635.775548] sd 4:0:0:0: [sdb] 976773168 512-byte logical blocks: (500 GB/466 GiB) [ 7635.775551] sd 4:0:0:0: [sdb] 4096-byte physical blocks [ 7635.775707] sd 4:0:0:0: [sdb] Write Protect is off [ 7635.775710] sd 4:0:0:0: [sdb] Mode Sense: 53 00 00 08 [ 7635.776003] sd 4:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA [ 7635.776308] sd 4:0:0:0: [sdb] Optimal transfer size 33553920 bytes not a multiple of physical block size (4096 bytes) [ 7635.783827] sdb: sdb1 [ 7635.786814] sd 4:0:0:0: [sdb] Attached SCSI disk [ 7636.072316] EXT4-fs (sdb1): mounting ext2 file system using the ext4 subsystem [ 7636.076261] EXT4-fs (sdb1): warning: mounting unchecked fs, running e2fsck is recommended [ 7636.083896] EXT4-fs (sdb1): mounted filesystem without journal. Opts: errors=remount-ro. Quota mode: none. The original fs of the SATA-III SSD used to be xfs, which I changed to ext2 in hope it would fix the problem about "I/O-errors", but it didnt. pe, 2023-03-31 kello 10:05 +0200, Greg KH kirjoitti: > On Fri, Mar 31, 2023 at 10:52:55AM +0300, Ilari Jääskeläinen wrote: > > As I attached a USB SSD into CentOS 9 Stream computer, after a short > > while it swaps /dev/sdb into /dev/sdc and the I/O gets ruined. > > Kind regards, Ilari Jääskeläinen. > > > > Is this using the CentOS kernel, or a kernel.org release? > > And if a device changes names like that, it implies it was disconnected > and then reconnected, what does the kernel logs say when this happened? > > thanks, > > greg k-h
