On Tue, 25 Nov 2025 21:03:01 -0700 Warner Losh <[email protected]> wrote:
> On Sun, Nov 23, 2025 at 7:15 AM A FreeBSD User <[email protected]> > wrote: > > > Hello, > > > > running FreeBSD 16.0-CURRENT #4 master-n282101-c8cf5a99f82b: Sun Nov 23 > > 13:56:23 CET > > 2025 amd64 I'm running into a serious problem when mounting an ext2fs > > formated USB Flash > > device (512GB). The devince contains files written by a Linux system, > > mounting the USB Flash > > via extended4fs, the size of the written datafiles is > 128GB. Deleting > > those files larger > > than some 20GB results in an I/O error reported by FReeBSD (# sudo rm > > /mnt/USB/filename). > > Unmounting the ext2fs after deletion (sudo umount /mnt) results in a total > > freeze of the box. > > No crash, no core dump, nothing. I waited almost an hour hoping for > > recover. I have to > > physically switch off the box. > > > > I checked with other USB flash I have at hand, one Samsung 256 GB, ZFS - > > no problem, another > > 128GB, UFS, no problem and several much smaller (4 - 64GB) with FAT or UFS > > filesystems, all no > > problem. > > > > I can not figure out whether it is the USB flash drive itself, the size or > > the ext2fs itself > > causing the problem. > > > > Does anybody see similar problems or do have an tip to investigate without > > risking my box' > > health switching it on/off on failure? > > > > I've not seen this on the smaller tests I've been able to run. > > So can you share the error messages that you get when you say you get I/O > errors? I'd like to see if this is due to an error in ext2fs or on the USB > drive. It's kinda sounding a little like the particular USB is triggering > some kind of issue that at the very least we should work around. Given that > it's not happening on all ext2fs drives you try to access, I'm leaning > towards the drive, but you never know. > > Thanks Plugging the USB flash gives the following hardware information on the console: [...] ugen1.5: <ASolid USB> at usbus1 umass0 on uhub6 umass0: <ASolid USB, class 0/0, rev 3.20/1.10, addr 4> on usbus1 (probe0:umass-sim0:0:0:0): REPORT LUNS. CDB: a0 00 00 00 00 00 00 00 00 10 00 00 (probe0:umass-sim0:0:0:0): CAM status: SCSI Status Error (probe0:umass-sim0:0:0:0): SCSI status: Check Condition (probe0:umass-sim0:0:0:0): SCSI sense: ILLEGAL REQUEST asc:20,0 (Invalid command operation code) (probe0:umass-sim0:0:0:0): Error 22, Unretryable error da4 at umass-sim0 bus 0 scbus11 target 0 lun 0 da4: <ASolid USB > Removable Direct Access SPC-4 SCSI device da4: Serial Number somer serial numbers da4: 400.000MB/s transfers da4: 475000MB (972800000 512 byte sectors) da4: quirks=0x2<NO_6_BYTE> [...] Trying to mount via: # mount -t ext2fs /dev/da4p1 /mnt/image [...] (da4:umass-sim0:0:0:0): got CAM status 0x444 (da4:umass-sim0:0:0:0): fatal error, failed to attach to device da4 at umass-sim0 bus 0 scbus11 target 0 lun 0 da4: <ASolid USB > s/n some serial numbers detached (da4:umass-sim0:0:0:0): Periph destroyed mount: /dev/da4p1: Device not configured [...] [...] # /compat/linux/sbin/fsck.ext4 /dev/da4p1 e2fsck 1.46.5 (30-Dec-2021) SINA was not cleanly unmounted, check forced. Pass 1: Checking inodes, blocks, and sizes Pass 2: Checking directory structure Pass 3: Checking directory connectivity Pass 4: Checking reference counts Pass 5: Checking group summary information Error writing file system info: Invalid argument XXXX: ***** FILE SYSTEM WAS MODIFIED ***** [...] detaching and attaching to another USB slot on the same (external) HUB: [...] ugen1.5: <ASolid USB> at usbus1 umass0 on uhub6 umass0: <ASolid USB, class 0/0, rev 3.20/1.10, addr 6> on usbus1 (probe0:umass-sim0:0:0:0): REPORT LUNS. CDB: a0 00 00 00 00 00 00 00 00 10 00 00 (probe0:umass-sim0:0:0:0): CAM status: SCSI Status Error (probe0:umass-sim0:0:0:0): SCSI status: Check Condition (probe0:umass-sim0:0:0:0): SCSI sense: ILLEGAL REQUEST asc:20,0 (Invalid command operation code) (probe0:umass-sim0:0:0:0): Error 22, Unretryable error da4 at umass-sim0 bus 0 scbus11 target 0 lun 0 da4: <ASolid USB > Removable Direct Access SPC-4 SCSI device da4: Serial Number some serial numbers da4: 400.000MB/s transfers da4: 475000MB (972800000 512 byte sectors) da4: quirks=0x2<NO_6_BYTE> linux: jid 0 pid 5087 (fsck.ext4): linux_ioctl_fallback fd=3, cmd=0x127c ('\^R',124) is not implemented linux: jid 0 pid 5087 (fsck.ext4): linux_ioctl_fallback fd=3, cmd=0x125e ('\^R',94) is not implemented (da4:umass-sim0:0:0:0): got CAM status 0x444 (da4:umass-sim0:0:0:0): fatal error, failed to attach to device da4 at umass-sim0 bus 0 scbus11 target 0 lun 0 da4: <ASolid USB > s/n some serial numbers detached (da4:umass-sim0:0:0:0): Periph destroyed [...] I can not even mount the device on CURRENT (FreeBSD 16.0-CURRENT #1 master-n282217-34d66b0c96d5: Fri Nov 28 05:15:56 CET 2025 amd64). Package used for linux operation: emulators/linux-rl9
