grep btrfs /proc/mounts
/dev/sdb /mirror btrfs
rw,noatime,compress=zlib,space_cache=v2,enospc_debug,subvolid=5,subvol=/
0 0
Filesystem on 4.9.18 went read-only w/ ENOSPC. Now it is close to
full, but can't really tell why it actually filled up at that time.
Here's the dmesg:
[1491582.099306] use_block_rsv: 8 callbacks suppressed
[1491582.101405] ------------[ cut here ]------------
[1491582.103404] WARNING: CPU: 3 PID: 6933 at
/home/zumbi/linux-4.9.18/fs/btrfs/extent-tree.c:8331
btrfs_alloc_tree_block+0x3be/0x4e0 [btrfs]
[1491582.105432] BTRFS: block rsv returned -28
[1491582.105433] Modules linked in: ipmi_si nls_utf8 fuse ufs qnx4
hfsplus hfs minix ntfs vfat msdos fat jfs xfs libcrc32c crc32c_generic
mpt3sas raid_class scsi_transport_sas mptctl mptbase dell_rbu
binfmt_misc rpcsec_gss_krb5 nfsv3 nfsv4 dns_resolver nfsd auth_rpcgss
nfs_acl
sunrpc intel_powerclamp coretemp kvm irqbypass crct10dif_pclmul
crc32_pclmul mgag200 joydev ttm ghash_clmulni_intel intel_cstate
drm_kms_helper drm dcdbas ipmi_devintf iTCO_wdt evdev
iTCO_vendor_support i2c_algo_bit intel_uncore serio_raw button
ipmi_msghandler pcspkr acpi_power_meter i7co
lpc_ich tpm_tis_core mfd_core tpm loop autofs4 ext4 crc16 jbd2
fscrypto mbcache btrfs xor raid6_pq dm_mod hid_generic usbhid hid sg
sd_mod crc32c_intel aesni_intel ehci_pci aes_x86_64
[1491582.116330] uhci_hcd glue_helper psmouse lrw ehci_hcd gf128mul
ixgbe megaraid_sas ablk_helper cryptd usbcore scsi_mod dca ptp
pps_core usb_common bnx2 mdio [last unloaded: ipmi_si]
[1491582.120924] CPU: 3 PID: 6933 Comm: btrfs-transacti Tainted: G
W I 4.9.0-0.bpo.2-amd64 #1 Debian 4.9.18-1~bpo8+1
[1491582.132792] Call Trace:
[1491582.135149] [<ffffffff91129dd5>] ? dump_stack+0x5c/0x77
[1491582.137528] [<ffffffff90e77934>] ? __warn+0xc4/0xe0
[1491582.139896] [<ffffffff90e779af>] ? warn_slowpath_fmt+0x5f/0x80
[1491582.142298] [<ffffffffc07a006e>] ?
btrfs_alloc_tree_block+0x3be/0x4e0 [btrfs]
[1491582.144713] [<ffffffffc0786599>] ? __btrfs_cow_block+0x149/0x5a0 [btrfs]
[1491582.147141] [<ffffffffc07ab101>] ? btrfs_commit_super+0x11/0x90 [btrfs]
[1491582.149568] [<ffffffffc0786b74>] ? btrfs_cow_block+0x104/0x1e0 [btrfs]
[1491582.151990] [<ffffffffc078a689>] ? btrfs_search_slot+0x1f9/0x9e0 [btrfs]
[1491582.154406] [<ffffffffc0790abe>] ?
lookup_inline_extent_backref+0xee/0x640 [btrfs]
[1491582.156841] [<ffffffffc07d2bf9>] ? set_extent_bit+0x29/0x30 [btrfs]
[1491582.159229] [<ffffffffc0792fc4>] ?
update_block_group.isra.68+0x144/0x410 [btrfs]
[1491582.161582] [<ffffffffc07933a7>] ?
__btrfs_free_extent.isra.69+0x117/0xd60 [btrfs]
[1491582.163896] [<ffffffffc0803e99>] ?
btrfs_merge_delayed_refs+0x69/0x600 [btrfs]
[1491582.166159] [<ffffffffc07982b5>] ?
__btrfs_run_delayed_refs+0xa15/0x1360 [btrfs]
[1491582.168371] [<ffffffffc079bacf>] ?
btrfs_run_delayed_refs+0x8f/0x2b0 [btrfs]
[1491582.170538] [<ffffffffc07b291a>] ?
btrfs_commit_transaction+0x43a/0xa40 [btrfs]
[1491582.172656] [<ffffffffc07b2fbd>] ? start_transaction+0x9d/0x4a0 [btrfs]
[1491582.174723] [<ffffffffc07ad382>] ? transaction_kthread+0x1b2/0x1f0 [btrfs]
[1491582.176766] [<ffffffffc07ad1d0>] ?
btrfs_cleanup_transaction+0x580/0x580 [btrfs]
[1491582.178761] [<ffffffff90e97520>] ? kthread+0xe0/0x100
[1491582.180729] [<ffffffff90e2476b>] ? __switch_to+0x2bb/0x700
[1491582.182687] [<ffffffff90e97440>] ? kthread_park+0x60/0x60
[1491582.184631] [<ffffffff913fc835>] ? ret_from_fork+0x25/0x30
[1491582.186585] ---[ end trace 98e911bbd6a0b34f ]---
[1491582.188576] ------------[ cut here ]------------
[1491582.190523] WARNING: CPU: 3 PID: 6933 at
/home/zumbi/linux-4.9.18/fs/btrfs/extent-tree.c:6961
__btrfs_free_extent.isra.69+0x152/0xd60 [btrfs]
[1491582.192547] BTRFS: Transaction aborted (error -28)
[1491582.208188] CPU: 3 PID: 6933 Comm: btrfs-transacti Tainted: G
W I 4.9.0-0.bpo.2-amd64 #1 Debian 4.9.18-1~bpo8+1
[1491582.220164] Call Trace:
[1491582.222551] [<ffffffff91129dd5>] ? dump_stack+0x5c/0x77
[1491582.224943] [<ffffffff90e77934>] ? __warn+0xc4/0xe0
[1491582.227338] [<ffffffff90e779af>] ? warn_slowpath_fmt+0x5f/0x80
[1491582.229754] [<ffffffffc07933e2>] ?
__btrfs_free_extent.isra.69+0x152/0xd60 [btrfs]
[1491582.232192] [<ffffffffc0803e99>] ?
btrfs_merge_delayed_refs+0x69/0x600 [btrfs]
[1491582.234633] [<ffffffffc07982b5>] ?
__btrfs_run_delayed_refs+0xa15/0x1360 [btrfs]
[1491582.237081] [<ffffffffc079bacf>] ?
btrfs_run_delayed_refs+0x8f/0x2b0 [btrfs]
[1491582.239540] [<ffffffffc07b291a>] ?
btrfs_commit_transaction+0x43a/0xa40 [btrfs]
[1491582.241998] [<ffffffffc07b2fbd>] ? start_transaction+0x9d/0x4a0 [btrfs]
[1491582.244453] [<ffffffffc07ad382>] ? transaction_kthread+0x1b2/0x1f0 [btrfs]
[1491582.246910] [<ffffffffc07ad1d0>] ?
btrfs_cleanup_transaction+0x580/0x580 [btrfs]
[1491582.249319] [<ffffffff90e97520>] ? kthread+0xe0/0x100
[1491582.251681] [<ffffffff90e2476b>] ? __switch_to+0x2bb/0x700
[1491582.253984] [<ffffffff90e97440>] ? kthread_park+0x60/0x60
[1491582.256237] [<ffffffff913fc835>] ? ret_from_fork+0x25/0x30
[1491582.258439] ---[ end trace 98e911bbd6a0b350 ]---
[1491582.260635] BTRFS: error (device sdb) in __btrfs_free
_extent:6961: errno=-28 No space left
[1491582.262758] BTRFS info (device sdb): forced readonly
[1491582.264843] BTRFS: error (device sdb) in
btrfs_run_delayed_refs:2967: errno=-28 No space left
[1491582.266941] BTRFS warning (device sdb): Skipping commit of
aborted transaction.
[1491582.269009] BTRFS: error (device sdb) in
cleanup_transaction:1850: errno=-28 No space left
and yes, it's quite full, but still seems to have both meta-data &
data & unallocated available. Hmm, I say that and see size ==
allocated below, but Unallocated shows 39GB per device but 8MB in the
summary. btrfs --version gives btrfs-progs v4.10.2. Maybe just a
bug/display issue in btrfs file usage?
btrfs file usage -T /mirror
Overall:
Device size: 249.22TiB
Device allocated: 249.22TiB
Device unallocated: 8.00MiB
Device missing: 0.00B
Used: 245.06TiB
Free (estimated): 4.15TiB (min: 4.15TiB)
Data ratio: 1.00
Metadata ratio: 2.00
Global reserve: 512.00MiB (used: 194.00MiB)
Data Metadata System
Id Path single RAID10 RAID10 Unallocated
-- -------- --------- --------- -------- -----------
1 /dev/sdb 29.94TiB 39.76GiB 8.00MiB 39.77GiB
2 /dev/sdc 29.94TiB 39.76GiB 8.00MiB 39.77GiB
3 /dev/sdd 39.94TiB 39.76GiB 8.00MiB 39.77GiB
4 /dev/sde 39.94TiB 39.76GiB 8.00MiB 39.77GiB
5 /dev/sdf 27.21TiB 39.76GiB 8.00MiB 39.77GiB
6 /dev/sdg 27.21TiB 39.76GiB 8.00MiB 39.77GiB
7 /dev/sdh 27.21TiB 39.76GiB 8.00MiB 39.77GiB
8 /dev/sdi 27.21TiB 39.76GiB 8.00MiB 39.77GiB
-- -------- --------- --------- -------- -----------
Total 248.60TiB 318.07GiB 64.00MiB 318.14GiB
Used 244.45TiB 316.37GiB 37.59MiB
FYI, after umount & mount btrfs sub delete seems to be working fine so
overall things are working great.
--
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
