-o skip_balance - didn't know this. Actually, I was able to "skip" the balance, sort of, with this: mount /mnt/btrfs ; btrfs fi balance cancel /mnt/btrfs However, the fs is extremely unstable (will remount read only quite fast, i.e. if I start removing snapshot). I'm trying to run btrfsck without the --repair option to see if it shows anything interesting. -- Tomasz Chmielewski http://wpkg.org On Fri, 20 Dec 2013 23:52:08 +0800 Shilong Wang <wangshilong1991@xxxxxxxxx> wrote: > Hello Tomasz, > > There should be some bugs flying on, unitil now, you can try to > remount: something like: > > # mount /dev/sda /mnt -o skip_balance > > It will skip unfinshed balance, hopley it can help you before we give > a bug fix. > > Thanks, > Wang > 2013/12/20 Tomasz Chmielewski <tch@xxxxxxxxxxx>: > > On Thu, 19 Dec 2013 22:07:37 +0900 > > Tomasz Chmielewski <tch@xxxxxxxxxxx> wrote: > > > >> If it matters, I had to hard reboot after that bug; the balance > >> continued after the system booted again and I got this a while > >> later (filesystem was remounted read only): > > > > Actually, looks like the fs is quite hosed now :( > > > > If I want to do an operation like removing a snapshot (btrfs sub > > del ...), the command returns, there is IO for a few minutes, but > > then, the kernel complains and fs is remounted readonly: > > > > [ 5111.773900] BTRFS debug (device sdb5): run_one_delayed_ref > > returned -17 [ 5111.773902] ------------[ cut here ]------------ > > [ 5111.773957] WARNING: CPU: 0 PID: 15042 at fs/btrfs/super.c:254 > > __btrfs_abort_transaction+0x4d/0xff [btrfs]() [ 5111.774047] btrfs: > > Transaction aborted (error -17) [ 5111.774048] Modules linked in: > > ipt_MASQUERADE iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 > > nf_nat_ipv4 nf_nat nf_conntrack ip_tables x_tables cpufreq_ondemand > > cpufreq_conservative cpufreq_powersave cpufreq_stats bridge stp llc > > ipv6 btrfs xor raid6_pq zlib_deflate loop pcspkr button video > > ehci_pci ehci_hcd acpi_cpufreq i2c_i801 i2c_core lpc_ich mfd_core > > ext4 crc16 jbd2 mbcache raid1 sg sd_mod ahci libahci libata > > scsi_mod r8169 mii [ 5111.774355] CPU: 0 PID: 15042 Comm: > > btrfs-transacti Tainted: G W 3.13.0-rc4 #1 [ 5111.774443] > > Hardware name: System manufacturer System Product Name/P8H77-M PRO, > > BIOS 1101 02/04/2013 [ 5111.774533] 0000000000000009 > > ffff8800374ddc48 ffffffff8138a37d 0000000000000006 [ 5111.774622] > > ffff8800374ddc98 ffff8800374ddc88 ffffffff810370a9 ffff8800374ddd80 > > [ 5111.774711] ffffffffa020d524 00000000ffffffef ffff8807ead7d800 > > ffff8807ff0cc8c0 [ 5111.774800] Call Trace: [ 5111.774846] > > [<ffffffff8138a37d>] dump_stack+0x46/0x58 [ 5111.774894] > > [<ffffffff810370a9>] warn_slowpath_common+0x77/0x91 [ 5111.774944] > > [<ffffffffa020d524>] ? __btrfs_abort_transaction+0x4d/0xff [btrfs] > > [ 5111.775032] [<ffffffff81037157>] warn_slowpath_fmt+0x41/0x43 > > [ 5111.775081] [<ffffffffa020d524>] > > __btrfs_abort_transaction+0x4d/0xff [btrfs] [ 5111.775135] > > [<ffffffffa02226ed>] btrfs_run_delayed_refs+0x253/0x46f [btrfs] > > [ 5111.775189] [<ffffffffa022fdec>] > > btrfs_commit_transaction+0x36d/0x7df [btrfs] [ 5111.775281] > > [<ffffffffa022e345>] transaction_kthread+0xef/0x1c2 [btrfs] > > [ 5111.775333] [<ffffffffa022e256>] ? open_ctree+0x1ac7/0x1ac7 > > [btrfs] [ 5111.775382] [<ffffffff8104ee9a>] kthread+0xcd/0xd5 > > [ 5111.775428] [<ffffffff8104edcd>] ? > > kthread_freezable_should_stop+0x43/0x43 [ 5111.775477] > > [<ffffffff8138f17c>] ret_from_fork+0x7c/0xb0 [ 5111.775524] > > [<ffffffff8104edcd>] ? kthread_freezable_should_stop+0x43/0x43 > > [ 5111.775572] ---[ end trace b552aca9a0cff3cb ]--- [ 5111.775618] > > BTRFS error (device sdb5) in btrfs_run_delayed_refs:2730: errno=-17 > > Object already exists [ 5111.775707] BTRFS info (device sdb5): > > forced readonly [ 5111.775754] BTRFS warning (device sdb5): > > Skipping commit of aborted transaction. [ 5111.775841] BTRFS error > > (device sdb5) in cleanup_transaction:1553: errno=-17 Object already > > exists > > > > > > > > If I run balance (after unmounting and mounting the filesystem), it > > ends in a similar way: > > > > [ 5927.338989] btrfs: relocating block group 4647284637696 flags 17 > > [ 6184.333629] btrfs: found 983 extents > > [ 6269.512577] BTRFS debug (device sdb5): run_one_delayed_ref > > returned -17 [ 6269.512579] ------------[ cut here ]------------ > > [ 6269.512636] WARNING: CPU: 7 PID: 17836 at fs/btrfs/super.c:254 > > __btrfs_abort_transaction+0x4d/0xff [btrfs]() [ 6269.512727] btrfs: > > Transaction aborted (error -17) [ 6269.512727] Modules linked in: > > ipt_MASQUERADE iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 > > nf_nat_ipv4 nf_nat nf_conntrack ip_tables x_tables cpufreq_ondemand > > cpufreq_conservative cpufreq_powersave cpufreq_stats bridge stp llc > > ipv6 btrfs xor raid6_pq zlib_deflate loop pcspkr button video > > ehci_pci ehci_hcd acpi_cpufreq i2c_i801 i2c_core lpc_ich mfd_core > > ext4 crc16 jbd2 mbcache raid1 sg sd_mod ahci libahci libata > > scsi_mod r8169 mii [ 6269.513036] CPU: 7 PID: 17836 Comm: > > btrfs-transacti Tainted: G W 3.13.0-rc4 #1 [ 6269.513124] > > Hardware name: System manufacturer System Product Name/P8H77-M PRO, > > BIOS 1101 02/04/2013 [ 6269.513214] 0000000000000009 > > ffff8807c5b07c48 ffffffff8138a37d 0000000000000006 [ 6269.513304] > > ffff8807c5b07c98 ffff8807c5b07c88 ffffffff810370a9 ffff8807c5b07d80 > > [ 6269.513393] ffffffffa020d524 00000000ffffffef ffff8807ead7e800 > > ffff8800371eedc0 [ 6269.513483] Call Trace: [ 6269.513529] > > [<ffffffff8138a37d>] dump_stack+0x46/0x58 [ 6269.513577] > > [<ffffffff810370a9>] warn_slowpath_common+0x77/0x91 [ 6269.513627] > > [<ffffffffa020d524>] ? __btrfs_abort_transaction+0x4d/0xff [btrfs] > > [ 6269.513716] [<ffffffff81037157>] warn_slowpath_fmt+0x41/0x43 > > [ 6269.513766] [<ffffffffa020d524>] > > __btrfs_abort_transaction+0x4d/0xff [btrfs] [ 6269.513820] > > [<ffffffffa02226ed>] btrfs_run_delayed_refs+0x253/0x46f [btrfs] > > [ 6269.513874] [<ffffffffa022faef>] > > btrfs_commit_transaction+0x70/0x7df [btrfs] [ 6269.513927] > > [<ffffffffa022e345>] transaction_kthread+0xef/0x1c2 [btrfs] > > [ 6269.513980] [<ffffffffa022e256>] ? open_ctree+0x1ac7/0x1ac7 > > [btrfs] [ 6269.514029] [<ffffffff8104ee9a>] kthread+0xcd/0xd5 > > [ 6269.514076] [<ffffffff8104edcd>] ? > > kthread_freezable_should_stop+0x43/0x43 [ 6269.514125] > > [<ffffffff8138f17c>] ret_from_fork+0x7c/0xb0 [ 6269.514172] > > [<ffffffff8104edcd>] ? kthread_freezable_should_stop+0x43/0x43 > > [ 6269.514220] ---[ end trace b552aca9a0cff3cc ]--- [ 6269.514266] > > BTRFS error (device sdb5) in btrfs_run_delayed_refs:2730: errno=-17 > > Object already exists [ 6269.514356] BTRFS info (device sdb5): > > forced readonly [ 6269.514430] BTRFS warning (device sdb5): > > Skipping commit of aborted transaction. [ 6269.514559] BTRFS error > > (device sdb5) in cleanup_transaction:1553: errno=-17 Object already > > exists [ 6269.527034] btrfs: found 983 extents > > > > > > Is there any fix I can try? > > > > > > -- > > Tomasz Chmielewski > > http://wpkg.org > > > > > > > > -- > > To unsubscribe from this list: send the line "unsubscribe > > linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx > > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
