> On 5. Jan 2020, at 15:50, Chris Murphy <lists@xxxxxxxxxxxxxxxxx> wrote: > > On Sun, Jan 5, 2020 at 7:17 AM Christian Wimmer <telefonchris@xxxxxxxxxx> wrote: >> >> Seems that I am using fstrim (I did not know this, what is it?): > > Frees unused blocks from underlying storage: in the case of sparse > files it punches holds, for thin provisioning it frees logical extents > back to the pool, and for real physical SSDs it informs the firmware > those blocks are no longer used and can be garbage collected. > > Most bugs in this area have either been fixed by firmware updates by > manufacturers for the SSD, or they've been blacklisted in the kernel > so that FITRIM is a no op. > > >> >> BTW, sda2 is here my root partition which is practically the same configuration (just smaller) than the 12TB hard disc >> >> 2020-01-03T11:30:47.479028-03:00 linux-ze6w kernel: [1297857.324177] sda2: rw=2051, want=532656128, limit=419430400 >> 2020-01-03T11:30:47.479538-03:00 linux-ze6w kernel: [1297857.324658] BTRFS warning (device sda2): failed to trim 1 device(s), last error -5 >> 2020-01-03T11:30:48.376543-03:00 linux-ze6w fstrim[27910]: fstrim: /opt: FITRIM ioctl failed: Input/output error >> 2020-01-03T11:30:48.378998-03:00 linux-ze6w kernel: [1297858.223675] attempt to access beyond end of device >> 2020-01-03T11:30:48.379012-03:00 linux-ze6w kernel: [1297858.223677] sda2: rw=3, want=421570540, limit=419430400 > > Yeah that's a problem. That may not be *the* problem, but there is > confusion here. What is /dev/sda? /dev/sda is the hard disc file that holds the Linux: #fdisk -l Disk /dev/sda: 256 GiB, 274877906944 bytes, 536870912 sectors Disk model: Suse 15.1-0 SSD 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: gpt Disk identifier: 186C0CD6-F3B8-471C-B2AF-AE3D325EC215 Device Start End Sectors Size Type /dev/sda1 2048 18431 16384 8M BIOS boot /dev/sda2 18432 419448831 419430400 200G Linux filesystem /dev/sda3 532674560 536870878 4196319 2G Linux swap This file is located on the SSD of my MAC Mini. /dev/sda2 is formatted with btrfs. > This is a virtual drive inside the > guest VM? And is backed by a file on the Promise storage? What about > /dev/sdb? Same thing? You're only having a problem with /dev/sdb, > which contains a Btrfs file system. Actually I have only a problem with the /dev/sdb which is a hard disc file on my Promise storage. The sda2 complains but boots normally. Regarding any logs. Which log files I should look at and how to display them? I looked at the /var/log/messages but did not find any related information. Chris
