[lapt2 Download]$ sudo btrfsctl -r -4g /mnt/1/btrfs_test1/ operation complete Btrfs Btrfs v0.17 [lapt2 Download]$ df -h Filesystem Size Used Avail Use% Mounted on /dev/mapper/VolGroup00-LogVol00 102G 39G 58G 40% / /dev/sda5 198M 29M 159M 16% /boot tmpfs 990M 288K 990M 1% /dev/shm /dev/sda3 5.8G 3.5G 2.3G 61% /mnt/1 [lapt2 Download]$ sudo su - [root@lapt2 ~]# cd /mnt/1/ [root@lapt2 1]# cd btrfs_test1/ [root@lapt2 btrfs_test1]# btrfsctl -r -1g /mnt/1 Segmentation fault [root@lapt2 btrfs_test1]# Message from syslogd@lapt2 at Jan 14 13:01:34 ... kernel:------------[ cut here ]------------ Message from syslogd@lapt2 at Jan 14 13:01:34 ... kernel:invalid opcode: 0000 [#1] SMP DEBUG_PAGEALLOC Message from syslogd@lapt2 at Jan 14 13:01:34 ... kernel:last sysfs file: /sys/devices/LNXSYSTM:00/device:00/PNP0C0A:00/power_supply/CMB1/charge_full Message from syslogd@lapt2 at Jan 14 13:01:34 ... kernel:Process btrfsctl (pid: 26037, ti=c59c6000 task=c419d400 task.ti=c59c6000) Message from syslogd@lapt2 at Jan 14 13:01:34 ... kernel:Stack: Message from syslogd@lapt2 at Jan 14 13:01:34 ... kernel: 00000000 c59c68c7 ffffffff f136b950 c59c6848 f87b4aaf 00001000 00000000 Message from syslogd@lapt2 at Jan 14 13:01:34 ... kernel: 00001000 00000000 00000000 00000000 dc830000 00000000 ffffffff ffffffff Message from syslogd@lapt2 at Jan 14 13:01:34 ... kernel:Call Trace: Message from syslogd@lapt2 at Jan 14 13:01:34 ... kernel: [<f87b4aaf>] ? btrfs_reserve_extent+0x35/0x58 [btrfs] Message from syslogd@lapt2 at Jan 14 13:01:34 ... kernel: [<f87c5658>] ? cow_file_range+0x1fa/0x3b5 [btrfs] Message from syslogd@lapt2 at Jan 14 13:01:34 ... kernel: [<f87c5f05>] ? run_delalloc_range+0x85/0x2f0 [btrfs] Message from syslogd@lapt2 at Jan 14 13:01:34 ... kernel: [<f87d8e7a>] ? __extent_writepage+0x209/0x8aa [btrfs] Message from syslogd@lapt2 at Jan 14 13:01:34 ... kernel: [<c04495b5>] ? clocksource_get_next+0xd/0x43 Message from syslogd@lapt2 at Jan 14 13:01:34 ... kernel: [<c04495b5>] ? clocksource_get_next+0xd/0x43 Message from syslogd@lapt2 at Jan 14 13:01:34 ... kernel: [<c044e03f>] ? trace_hardirqs_off_caller+0x18/0xa3 Message from syslogd@lapt2 at Jan 14 13:01:34 ... kernel: [<c047e32c>] ? find_get_pages_tag+0xb1/0xd8 Message from syslogd@lapt2 at Jan 14 13:01:34 ... kernel: [<f87d6757>] ? extent_write_cache_pages+0x14d/0x230 [btrfs] Message from syslogd@lapt2 at Jan 14 13:01:34 ... kernel: [<f87c3b3c>] ? btrfs_writepages+0x0/0x1f [btrfs] Message from syslogd@lapt2 at Jan 14 13:01:34 ... kernel: [<f87d686b>] ? extent_writepages+0x31/0x53 [btrfs] Message from syslogd@lapt2 at Jan 14 13:01:34 ... kernel: [<f87d8c71>] ? __extent_writepage+0x0/0x8aa [btrfs] Message from syslogd@lapt2 at Jan 14 13:01:34 ... kernel: [<f87d521b>] ? flush_write_bio+0x0/0x26 [btrfs] Message from syslogd@lapt2 at Jan 14 13:01:34 ... kernel: [<f87c3c68>] ? btrfs_get_extent+0x0/0x815 [btrfs] Message from syslogd@lapt2 at Jan 14 13:01:34 ... kernel: [<f87c3b56>] ? btrfs_writepages+0x1a/0x1f [btrfs] Message from syslogd@lapt2 at Jan 14 13:01:34 ... kernel: [<c048423d>] ? do_writepages+0x23/0x34 Message from syslogd@lapt2 at Jan 14 13:01:34 ... kernel: [<c04bc8ae>] ? __writeback_single_inode+0x15a/0x293 Message from syslogd@lapt2 at Jan 14 13:01:34 ... kernel: [<c04bcd8d>] ? generic_sync_sb_inodes+0x234/0x303 Message from syslogd@lapt2 at Jan 14 13:01:34 ... kernel: [<c04bcd8d>] ? generic_sync_sb_inodes+0x234/0x303 Message from syslogd@lapt2 at Jan 14 13:01:34 ... kernel: [<c04bcd3d>] ? generic_sync_sb_inodes+0x1e4/0x303 Message from syslogd@lapt2 at Jan 14 13:01:34 ... kernel: [<c04bcffe>] ? writeback_inodes+0x85/0xcc Message from syslogd@lapt2 at Jan 14 13:01:34 ... kernel: [<c0484a6e>] ? balance_dirty_pages_ratelimited_nr+0x128/0x232 Message from syslogd@lapt2 at Jan 14 13:01:34 ... kernel: [<f87b2a4c>] ? relocate_inode_pages+0x2bb/0x311 [btrfs] Message from syslogd@lapt2 at Jan 14 13:01:34 ... kernel: [<f87b2be5>] ? relocate_data_extent+0x143/0x163 [btrfs] Message from syslogd@lapt2 at Jan 14 13:01:34 ... kernel: [<f87b85d7>] ? relocate_one_extent+0x16b/0x33d [btrfs] Message from syslogd@lapt2 at Jan 14 13:01:34 ... kernel: [<f87c02d5>] ? btrfs_end_transaction+0xa/0xc [btrfs] Message from syslogd@lapt2 at Jan 14 13:01:34 ... kernel: [<f87b2708>] ? __alloc_chunk_for_shrink+0x104/0x11b [btrfs] Message from syslogd@lapt2 at Jan 14 13:01:34 ... kernel: [<f87b89fd>] ? btrfs_relocate_block_group+0x254/0x3dc [btrfs] Message from syslogd@lapt2 at Jan 14 13:01:34 ... kernel: [<f87dc2f1>] ? btrfs_relocate_chunk+0x4d/0x42a [btrfs] Message from syslogd@lapt2 at Jan 14 13:01:34 ... kernel: [<f87d4ca4>] ? map_extent_buffer+0x69/0xa0 [btrfs] Message from syslogd@lapt2 at Jan 14 13:01:34 ... kernel: [<c044ed4f>] ? trace_hardirqs_on_caller+0x18/0x145 Message from syslogd@lapt2 at Jan 14 13:01:34 ... kernel: [<c044ee87>] ? trace_hardirqs_on+0xb/0xd Message from syslogd@lapt2 at Jan 14 13:01:34 ... kernel: [<f87dc935>] ? btrfs_shrink_device+0x267/0x286 [btrfs] Message from syslogd@lapt2 at Jan 14 13:01:34 ... kernel: [<f87e0587>] ? btrfs_ioctl+0x614/0x89d [btrfs] Message from syslogd@lapt2 at Jan 14 13:01:34 ... kernel: [<c0511bbb>] ? inode_has_perm+0x58/0x62 Message from syslogd@lapt2 at Jan 14 13:01:34 ... kernel: [<c046b12f>] ? audit_filter_rules+0x0/0x7ac Message from syslogd@lapt2 at Jan 14 13:01:34 ... kernel: [<f87dff73>] ? btrfs_ioctl+0x0/0x89d [btrfs] Message from syslogd@lapt2 at Jan 14 13:01:34 ... kernel: [<c04b0e23>] ? vfs_ioctl+0x22/0x69 Message from syslogd@lapt2 at Jan 14 13:01:34 ... kernel: [<c04b1398>] ? do_vfs_ioctl+0x46a/0x4a3 Message from syslogd@lapt2 at Jan 14 13:01:34 ... kernel: [<c0511f41>] ? selinux_file_ioctl+0x3e/0x42 Message from syslogd@lapt2 at Jan 14 13:01:34 ... kernel: [<c04b1411>] ? sys_ioctl+0x40/0x5a Message from syslogd@lapt2 at Jan 14 13:01:34 ... kernel: [<c0403b76>] ? syscall_call+0x7/0xb Message from syslogd@lapt2 at Jan 14 13:01:34 ... kernel: [<c06e007b>] ? acpi_processor_start+0x45d/0x6e3 Message from syslogd@lapt2 at Jan 14 13:01:34 ... kernel:Code: 08 89 d8 8b 4d 0c 83 c4 2c e8 ad 0b 03 00 8b 45 e4 e8 bd e1 f2 c7 8b 3f 8b 07 0f 18 00 90 3b 7d e0 75 8b 8b 45 e8 e8 c8 01 c9 c7 <0f> 0b eb fe 8d 65 f4 31 c0 5b 5e 5f 5d c3 55 89 e5 57 89 d7 56 Message from syslogd@lapt2 at Jan 14 13:01:34 ... kernel:EIP: [<f87b4a6c>] __btrfs_reserve_extent+0x32d/0x33b [btrfs] SS:ESP 0068:c59c67d0
thanks I've reproduced this locally, I'll work on a fix.
this is getting prioritized other more important things, basically don't shrink your fs too close to how much is currently used, otherwise it will panic. I'll throw this on the TODO list.
This bug appears to have been reported against 'rawhide' during the Fedora 11 development cycle. Changing version to '11'. More information and reason for this action is here: http://fedoraproject.org/wiki/BugZappers/HouseKeeping
This message is a reminder that Fedora 11 is nearing its end of life. Approximately 30 (thirty) days from now Fedora will stop maintaining and issuing updates for Fedora 11. It is Fedora's policy to close all bug reports from releases that are no longer maintained. At that time this bug will be closed as WONTFIX if it remains open with a Fedora 'version' of '11'. Package Maintainer: If you wish for this bug to remain open because you plan to fix it in a currently maintained version, simply change the 'version' to a later Fedora version prior to Fedora 11's end of life. Bug Reporter: Thank you for reporting this issue and we are sorry that we may not be able to fix it before Fedora 11 is end of life. If you would still like to see this bug fixed and are able to reproduce it against a later version of Fedora please change the 'version' of this bug to the applicable version. If you are unable to change the version, please add a comment here and someone will do it for you. Although we aim to fix as many bugs as possible during every release's lifetime, sometimes those efforts are overtaken by events. Often a more recent Fedora release includes newer upstream software that fixes bugs or makes them obsolete. The process we are following is described here: http://fedoraproject.org/wiki/BugZappers/HouseKeeping
Fedora 11 changed to end-of-life (EOL) status on 2010-06-25. Fedora 11 is no longer maintained, which means that it will not receive any further security or bug fix updates. As a result we are closing this bug. If you can reproduce this bug against a currently maintained version of Fedora please feel free to reopen this bug against that version. Thank you for reporting this bug and we are sorry it could not be fixed.