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...