Re: [pve-devel] [PATCH storage 4/6] rbd plugin: implement volume import/export

[Fiona Ebner <f.ebner@proxmox.com>]

Am 13.12.24 um 17:34 schrieb Fiona Ebner:
> Am 13.12.24 um 17:30 schrieb Fiona Ebner:
>> +	run_command(['dd', "if=$file", "bs=64k", "status=progress"], output => '>&'.fileno($fh));
> 
> ---snip---
> 
>> +	run_command(['dd', "of=$file", 'bs=64k'], input => '<&'.fileno($fh));
> 
> 
> Forgot to mention, I did not test with different block sizes yet. This
> is just copied from the LVM plugin. Will do that next week and see if
> it's worth changing.

Tested between a virtual cluster with integrated Ceph (A) and another
node with external Ceph (B) with a VM with a 4 GiB OS disk and 15 GiB
disk full of random data. Don't see much difference, with 64K slightly
winning:

A -> B

16 KiB

2024-12-17 13:00:49 migration finished successfully (duration 00:02:01)
qm remote-migrate 1234 1234  --target-storage rbd --target-bridge vmbr0
12.67s user 42.01s system 45% cpu 2:01.29 total

2024-12-17 13:05:40 migration finished successfully (duration 00:02:01)
qm remote-migrate 1234 1234  --target-storage rbd --target-bridge vmbr0
12.49s user 42.34s system 45% cpu 2:00.89 total

64 KiB

2024-12-17 11:59:35 migration finished successfully (duration 00:01:56)
qm remote-migrate 1234 1234  --target-storage rbd --target-bridge vmbr0
12.31s user 41.10s system 45% cpu 1:57.31 total

2024-12-17 12:05:39 migration finished successfully (duration 00:01:58)
qm remote-migrate 1234 1234  --target-storage rbd --target-bridge vmbr0
12.07s user 41.30s system 45% cpu 1:58.00 total

256 KiB

2024-12-17 12:11:00 migration finished successfully (duration 00:02:05)
qm remote-migrate 1234 1234  --target-storage rbd --target-bridge vmbr0
11.29s user 37.89s system 39% cpu 2:06.03 total

2024-12-17 12:16:54 migration finished successfully (duration 00:02:07)
qm remote-migrate 1234 1234  --target-storage rbd --target-bridge vmbr0
11.64s user 38.70s system 39% cpu 2:07.61 total


B -> A

16 KiB

2024-12-17 13:02:47 migration finished successfully (duration 00:01:28)
qm remote-migrate 1234 1234  --target-storage rbd --target-bridge vnet0
13.06s user 40.22s system 58% cpu 1:31.23 total

2024-12-17 13:07:57 migration finished successfully (duration 00:01:28)
qm remote-migrate 1234 1234  --target-storage rbd --target-bridge vnet0
13.00s user 40.25s system 58% cpu 1:30.64 total

64 KiB

2024-12-17 11:56:34 migration finished successfully (duration 00:01:22)
qm remote-migrate 1234 1234  --target-storage rbd --target-bridge vnet0
12.72s user 37.16s system 59% cpu 1:24.53 total

2024-12-17 12:03:15 migration finished successfully (duration 00:01:27)
qm remote-migrate 1234 1234  --target-storage rbd --target-bridge vnet0
13.19s user 38.45s system 57% cpu 1:30.10 total

256 KiB

2024-12-17 12:08:10 migration finished successfully (duration 00:01:31)
qm remote-migrate 1234 1234  --target-storage rbd --target-bridge vnet0
12.18s user 37.23s system 52% cpu 1:34.39 total

2024-12-17 12:14:05 migration finished successfully (duration 00:01:35)
qm remote-migrate 1234 1234  --target-storage rbd --target-bridge vnet0
11.85s user 36.74s system 49% cpu 1:37.46 total



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