Recent content by did-vmonroig

Hi. I use pve-zsync as backup solution between servers, sometimes with a periodicity of less than an hour. From time to time, this error arises: cannot receive new filesystem stream: destination has snapshots (eg. rpool/data/vm-1106-disk-0@rep_mv06-servidor16_2023-10-25_17:00:01) must destroy...

Problem arised in a machine with 16 GB RAM, with 4GB to 8GB ZFS memory, and with only a VM, with memory ballooning from 4GB to 8GB. No swap was used. options zfs zfs_arc_min=4294967296 options zfs zfs_arc_max=8589934592 I'm trying with 2GB to 4GB ZFS memory.

I'm experiencing same problem with a configuration similar to blabbermouth: RAID-1 with SSD for cache. Host is Proxmox 4, updated to latest no-subscription repo. Guest is Windows 2012 R2 with very little load right now, but latest part of installation of Adobe Reader DC, with its optimization...

Thanks, manu. I thought that IO wait was never going to be so high, as fsyncs are so good.

Hi all, I'm testing a new setup with ZFS: Two mirrored SATA 1TB magnetic drives and a 120GB SSD drive for ZIL + L2ARC. This are pveperf results: root@servidor01:~# pveperf CPU BOGOMIPS: 24744.08 REGEX/SECOND: 2625273 HD SIZE: 377.89 GB (rpool/ROOT/pve-1) FSYNCS/SECOND...

I've made a new system, with ext3 this time, still a single SATA disk, and what a change in the numbers: root@servidor03:~# pveperf /var/lib/vz CPU BOGOMIPS: 54394.16 REGEX/SECOND: 1635928 HD SIZE: 1771.76 GB (/dev/mapper/vg1-lv1) BUFFERED READS: 195.13 MB/sec...

That is consistent with my assumptions. My best bet is to create a new system from scratch, with all recommendations from this post. New ones are welcome, of course. ;) I'll report back when a new system with similar hardware is ready, and this thread could be for reference to anyone.

My ISP offers an online tool to create partitions. Seems that when I selected swap partition, it created with that type. Can this be problematic? To be completely honest, I don't remember, but probably it was because I used some notes for partitioning a SSD disk, although it's a mechanichal...

This is /etc/fstab: # <file system> <mount point> <type> <options> <dump> <pass> /dev/sda1 / ext4 errors=remount-ro 0 1 /dev/sda2 swap swap defaults 0 0 /dev/vg1/lv1 /var/lib/vz ext4 defaults,usrquota 0 2...

May mounting with noatime or any other options get better IO performance? Are there any caveats to this? Thanks.

I need about 1 TB for VMs, so SSD has to wait to a near future, but thank you for your suggestion. :D

I know about mount options and fstab, but can you explain which options are good or bad? Thank you.

So, using ext3 can improve fsyncs? It's the only thing I can try without upgrading to RAID?

Thanks, Udo. The server is under very low load: root@servidor02:~# iostat -dm 5 sda Linux 2.6.32-16-pve (servidor02.XXX.XXX) 15/08/13 _x86_64_ (4 CPU) Device: tps MB_read/s MB_wrtn/s MB_read MB_wrtn sda 4,20 0,00 0,06...

Hello. I've been reading about performance, and I think this system IO should be better, but I can't found the problem. It's a Core i5-2400 with two Toshiba DT01ACA200 SATA hard disks. There is no RAID in use. One HD is for system and VMs and the other for backups. There are no SMART problems...