Stefan, Watch for duplicate COW setups. If client selected QCOW VM storage on top of ZFS, that would be a copy on write filesystem on top of another copy on write filesystem.
Robert Gerber 402-237-8692 [email protected] On Wed, Apr 29, 2026, 8:22 AM Stefan G. Weichinger via Bacula-users < [email protected]> wrote: > Am 29.04.26 um 14:39 schrieb Heitor Faria: > > Hello Stefan, > > > > Things work, but I only see around 50-70 MB/s for backups. > > > > You obviously have a bottleneck. You need to start measuring: network > > (iperf); disk writes, reads, your tree walk (e.g. time find /your/path - > > type f > /dev/null) etc. > > I replaced the virtual disk controller in the client from virtio to scsi. > > And enabled SSD emulation for that disk. > > Changed little ... the disk is read with around 70 MB/s according to > atop -> shown as "busy 80%" (with virtio it was even higher). > > I also checked the mount options for things like "noatime" (ext4). > > SSD Emulation might be wrong: > > I didn't configure that server, so I just found that the larger > datastore consists of HDDs: 4x Seagate Exos 28 TB in some kind of ZFS > pool (!) with raidz2, as far as I see. > > hm, this might be the reason for some unwanted overhead here. > > Let me repeat: not my idea, not my setup ;-) > > > By coincidence, I just published my personal Proxmox Backup Plugin for > > Bacula Community, which supports the latest Proxmox Backup APIs and > > provides all PBS functions too: https://www.linkedin.com/posts/ > > heitorbacula_podheitor-plugin-de-backup-replica%C3%A7%C3%A3o- > > activity-7455206154382782464-6GS_? > > > utm_source=social_share_send&utm_medium=member_desktop_web&rcm=ACoAAACcSp4BYjaTUSVxav5iossfBRxcPrLdSJM > < > https://www.linkedin.com/posts/heitorbacula_podheitor-plugin-de-backup-replica%C3%A7%C3%A3o-activity-7455206154382782464-6GS_?utm_source=social_share_send&utm_medium=member_desktop_web&rcm=ACoAAACcSp4BYjaTUSVxav5iossfBRxcPrLdSJM > > > > PVT if you want to test it. > > thanks, not right now. > > > _______________________________________________ > Bacula-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/bacula-users >
_______________________________________________ Bacula-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/bacula-users
