> Am 18.05.2019 um 11:31 schrieb Roman Mamedov <r...@romanrm.net>: > > On Sat, 18 May 2019 11:18:31 +0200 > Michael Laß <be...@bi-co.net> wrote: >> >> pvdisplay -m: >> >> --- Physical volume --- >> PV Name /dev/sda1 >> VG Name vg_system >> PV Size 119.24 GiB / not usable <22.34 MiB >> Allocatable yes (but full) >> PE Size 32.00 MiB >> Total PE 3815 >> Free PE 0 >> Allocated PE 3815 >> PV UUID mqCLFy-iDnt-NfdC-lfSv-Maor-V1Ih-RlG8lP > > Such peculiar physical layout suggests you resize your LVs up and down a lot, > is there any chance you could have recently shrinked the LV without first > resizing down all the layers above it (Btrfs and LUKS) in proper order?
This is mostly a result from my transition from several ext4 volumes to one btrfs volume, where I extended the new btrfs volume several times. I quickly checked my shell history and it was something like this: cryptsetup luksFormat /dev/mapper/vg_system-btrfs cryptsetup luksOpen --allow-discards /dev/mapper/vg_system-btrfs cryptsystem mkfs.btrfs -L system /dev/mapper/cryptsystem lvextend -l100%free /dev/vg_system/btrfs cryptsetup resize cryptsystem btrfs fi resize max / The previous ext4 volumes had been resized a couple of times as well before. However, the last resize operation was in 2015 and never caused any issues since then. The btrfs file system which I now use to reproduce the issue is freshly created. So if there is any fallout from these resize operations, it would have to be in dm-crypt or LVM. Just to double-check, I compared the output of “cryptsetup status” and “lvdisplay”: lvdisplay shows me that vg_system/btrfs uses 3511 LE. Each of those is 32MiB which makes 3511 * 32 * 1024 * 1024 / 512 = 230096896 sectors cryptsetup shows me that the volume has a size of 230092800 sectors and an offset of 4096 which makes 230092800 + 4096 = 230096896 sectors So this seems to match perfectly. >> --- Physical Segments --- >> Physical extent 0 to 1248: >> Logical volume /dev/vg_system/btrfs >> Logical extents 2231 to 3479 >> Physical extent 1249 to 1728: >> Logical volume /dev/vg_system/btrfs >> Logical extents 640 to 1119 >> Physical extent 1729 to 1760: >> Logical volume /dev/vg_system/grml-images >> Logical extents 0 to 31 >> Physical extent 1761 to 2016: >> Logical volume /dev/vg_system/swap >> Logical extents 0 to 255 >> Physical extent 2017 to 2047: >> Logical volume /dev/vg_system/btrfs >> Logical extents 3480 to 3510 >> Physical extent 2048 to 2687: >> Logical volume /dev/vg_system/btrfs >> Logical extents 0 to 639 >> Physical extent 2688 to 3007: >> Logical volume /dev/vg_system/btrfs >> Logical extents 1911 to 2230 >> Physical extent 3008 to 3320: >> Logical volume /dev/vg_system/btrfs >> Logical extents 1120 to 1432 >> Physical extent 3321 to 3336: >> Logical volume /dev/vg_system/boot >> Logical extents 0 to 15 >> Physical extent 3337 to 3814: >> Logical volume /dev/vg_system/btrfs >> Logical extents 1433 to 1910
