Hi, This is a kind of scenario question for best practices -- within limits. I've inherited a less than ideal backup situation: backups are transferred from Samba to Windows. I can't get out of this situation without major re-engineering and the only problem is the time it takes to do full backups. Specifically: -200GiB is taking a few days to backup -Cpio is doing the backup across cifs Here are optimizations I've tried so far: +switch from smbfs to cifs -- yes this is an old-ish system but Samba 3.0.10 +mount local noatime +installed 1G more memory -- almost 1.5G is cached +verified low processor & vm usage -- data i/o doesn't +appear to be spreading to other subsystems configure Windows for larger +FS cache These Samba and Windows hosts are on the same network (and the same, Gig switch as far as I can tell). What scares me is the latency of backups (because it's really no longer a Saturday backup) and the time to restore. Anyone tried cpio & smbd blocking factors? Or what other networking suggestions are there? The only kind of tweaking I've done is for tape backups but that was local to a host ... Justin -- AIM/YIM/ICQ: vap0rtranz Homepage: http://appstate.edu/~jp59031/ "Here on the moon, our weekends are so advanced, they encompass the entire week." - Ignignokt
Hi, This is a kind of scenario question for best practices -- within limits. I've inherited a less than ideal backup situation: backups are transferred from Samba to Windows. I can't get out of this situation without major re-engineering and the only problem is the time it takes to do full backups. Specifically: -200GiB is taking a few days to backup -Cpio is doing the backup across cifs Here are optimizations I've tried so far: +switch from smbfs to cifs -- yes this is an old-ish system but Samba 3.0.10 +mount local noatime +installed 1G more memory -- almost 1.5G is cached +verified low processor & vm usage -- data i/o doesn't +appear to be spreading to other subsystems configure Windows for larger +FS cache These Samba and Windows hosts are on the same network (and the same, Gig switch as far as I can tell). What scares me is the latency of backups (because it's really no longer a Saturday backup) and the time to restore. Anyone tried cpio & smbd blocking factors? Or what other networking suggestions are there? The only kind of tweaking I've done is for tape backups but that was local to a host ... Justin -- AIM/YIM/ICQ: vap0rtranz Homepage: http://appstate.edu/~jp59031/ "Here on the moon, our weekends are so advanced, they encompass the entire week." - Ignignokt
Justin Pittman wrote:> Hi, > > This is a kind of scenario question for best practices -- within limits. I've > inherited a less than ideal backup situation: backups are transferred from > Samba to Windows. I can't get out of this situation without major > re-engineering and the only problem is the time it takes to do full backups. > Specifically: > > -200GiB is taking a few days to backup > -Cpio is doing the backup across cifs > > Here are optimizations I've tried so far: > > +switch from smbfs to cifs -- yes this is an old-ish system but Samba 3.0.10 > +mount local noatime > +installed 1G more memory -- almost 1.5G is cached > +verified low processor & vm usage -- data i/o doesn't > +appear to be spreading to other subsystems configure Windows for larger > +FS cache > > These Samba and Windows hosts are on the same network (and the same, Gig > switch as far as I can tell). What scares me is the latency of backups > (because it's really no longer a Saturday backup) and the time to > restore. Anyone > tried cpio & smbd blocking factors? Or what other networking suggestions are > there? The only kind of tweaking I've done is for tape backups but that was > local to a host ... > > Justin > >rsync? DeltaCopy has a windows rsync client that works great to push files out to a samba server. There is an rsync server as well, but I've not yet had to use it. Jeff
On 7/22/2008, Justin Pittman (vap0rtranz@gmail.com) wrote:> -200GiB is taking a few days to backupSomething is obviously very wrong - that is just insane... Do regular copies (drag-n-drop) take the same amount of time? What is Samba config for the share(s) being backed up (contents of smb.conf)? -- Best regards, Charles