Package: src:linux Version: 4.9.144-2 Severity: normal
Hello, maybe this is an known problem, because i found an extended description of this problem in the internet: https://linux-blog.anracom.com/2018/12/03/linux-ssd-partition-alignment-problems-with-external-usb-to-sata-controllers-i/ The problem first was that an harddisk did not work any more on an pc. So i extracted it and analyzed it connected with an USB-Adapter on an other PC. I found out that the partition-list was deleted and reconstructed it. After that all data could be rescued and an e2fsck-check of the partitions where successful. But after reintegrating of the harddisk the partitions are still unreadable! After searching for the problem i found the article above and i had to connect and restore it with the original controller. That is unbelievable, because how can the partitions be dependent on the Sata-controller used? That is really strange! Where can this be reported to the kernel team or is this problem solved in actual kernel versions? Here an example of this harddisk: ------------------------------------------- Correct is this paritioning shown with fdisk and readable with the USB controller: Disk /dev/sdd: 931,5 GiB, 1000204886016 bytes, 244190646 sectors Units: sectors of 1 * 4096 = 4096 bytes Sector size (logical/physical): 4096 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disklabel type: dos Disk identifier: 0x5537c98f Device Boot Start End Sectors Size Id Type /dev/sdd1 256 10486015 10485760 40G 83 Linux /dev/sdd2 10486016 20971775 10485760 40G 83 Linux /dev/sdd3 20971776 21233919 262144 1G 82 Linux swap / Solaris /dev/sdd4 21233920 244190645 222956726 850,5G 83 Linux Connecting the disk direct to the onboard Sata controller shows: Disk /dev/sdc: 931,5 GiB, 1000204886016 bytes, 1953525168 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disklabel type: dos Disk identifier: 0x5537c98f Device Boot Start End Sectors Size Id Type /dev/sdc1 256 10486015 10485760 5G 83 Linux /dev/sdc2 10486016 20971775 10485760 5G 83 Linux /dev/sdc3 20971776 21233919 262144 128M 82 Linux swap / Solaris /dev/sdc4 21233920 244190645 222956726 106,3G 83 Linux and the partitions can't be mounted of course: mount /dev/sdc4 /media/sdc4 mount: wrong fs type, bad option, bad superblock on /dev/sdc4, missing codepage or helper program, or other error In some cases useful info is found in syslog - try dmesg | tail or so. Cheers karsten
