FS#61399 - [linux-lts] btrfs mount with 4.19 3x slower than 4.14
Attached to Project:
Arch Linux
Opened by desbma (desbma) - Monday, 14 January 2019, 12:23 GMT
Last edited by Andreas Radke (AndyRTR) - Saturday, 28 December 2019, 12:59 GMT
Opened by desbma (desbma) - Monday, 14 January 2019, 12:23 GMT
Last edited by Andreas Radke (AndyRTR) - Saturday, 28 December 2019, 12:59 GMT
|
Details
I have a /data BTRFS partition that is very slow to mount
with kernel linux-lts-4.19.14-1: about ~18s.
The partition is mounted on boot by systemd, but it is reproducible by uounting and then mounting it again. Reverting back to linux-lts-4.14.90-1 it mounts in ~6s (which I already consider slow). The only mount options I have in fstab are: noatime,flushoncommit The partition is of ~4TB and about 90% full. It is backed by a LUKS block device, but my other LUKS partitions with ext4 above mount in an instant. dmesg does not show any warning or error. I tried: * running a balance with: sudo btrfs balance start -dusage=50 -musage=50 /data * removing the flushoncommit mount option None of that made the mount faster. Any idea? |
This task depends upon
Closed by Andreas Radke (AndyRTR)
Saturday, 28 December 2019, 12:59 GMT
Reason for closing: Upstream
Saturday, 28 December 2019, 12:59 GMT
Reason for closing: Upstream
So it's still al lot slower but it has improved...