I have a mount point that became ... hung for lack of a better word. I was doing a LARGE sort of a file in it, using temporary files in that directory, and the system hung and probably the watchdog kicked in, reset the system.
Upon reboot, the filesystem hung if you touched it. Processes were unkillable if they were using it. Kernel logs showed nothing ... nothing in dmesg. $ btrfs filesystem df /.MEDIA/ Data, RAID1: total=1.51TiB, used=1.51TiB System, RAID1: total=32.00MiB, used=304.00KiB Metadata, RAID1: total=4.00GiB, used=2.17GiB GlobalReserve, single: total=512.00MiB, used=2.23MiB .....is it out of space? Data might be? It's 2 x 2TB drives in RAID1, and I don't think I'm quite up to that above. I'm using a single partition: Disk /dev/sde: 3907029168 sectors, 1.8 TiB Logical sector size: 512 bytes Disk identifier (GUID): 5214ED9D-769A-4DF8-886F-8EEC3FDD4D0D Partition table holds up to 128 entries First usable sector is 34, last usable sector is 3907029134 Partitions will be aligned on 8-sector boundaries Total free space is 6 sectors (3.0 KiB) Number Start (sector) End (sector) Size Code Name 1 40 3907029134 1.8 TiB 8300 BTRFS MEDIA I'm not using any advanced features like snapshots or subvolumes here. I did try a btrfs balance, but it seemed to suffer the same hanging fate... btfs check was fine: $ sudo btrfs check /dev/sde1 Checking filesystem on /dev/sde1 UUID: 6a69975b-20f9-408f-9120-c457d23d0e55 checking extents checking free space cache checking fs roots checking csums checking root refs found 1661050089472 bytes used err is 0 total csum bytes: 1612603964 total tree bytes: 2325479424 total fs tree bytes: 280821760 total extent tree bytes: 182353920 btree space waste bytes: 317572754 file data blocks allocated: 2495485378560 referenced 1674323156992 $ sudo btrfs fi show /dev/sde1 Label: 'MEDIA' uuid: 6a69975b-20f9-408f-9120-c457d23d0e55 Total devices 2 FS bytes used 1.51TiB devid 1 size 1.82TiB used 1.51TiB path /dev/sde1 devid 2 size 1.82TiB used 1.51TiB path /dev/sdd1 $ sudo mount -oro /.MEDIA worked... and could interact with it $ sudo mount -orw,remount /.MEDIA worked ... and I removed the temporary files, and it seem to be ok now. But why did it hang before? -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html