btrace is installed by the blktrace package. Its a script which runs blktrace and passes the output to blkparse.
yum install -y blktrace Then btrace should be in /bin/ and in /usr/bin On Thu, Mar 15, 2018 at 12:03 AM, Fabien Rouach <fabien.rou...@gmail.com> wrote: > I don't have btrace on my centos 7 server, what should I install? > is blktrace doing the same thing? > > > Le mercredi 14 mars 2018 07:40:50 UTC-4, quadstor a écrit : >> >> Please send the diagnostics file. >> >> Also a btrace output >> btrace -w 120 <device> > /tmp/btrace.out >> >> Where <device> will be the device path of the RAID device configured >> in the storage pool. If there are multiple devices please run btrace >> against all devices configured in the pool. Also btrace needs to be >> run during the backup when its slow. >> >> On Wed, Mar 14, 2018 at 7:55 AM, Fabien Rouach <fabien...@gmail.com> >> wrote: >> > Hi >> > I've bee doing several test on quadstor vtl, and had nice perf (close to >> > 100MB/s sometimes) >> > decided to switch to disk backup using quadstor storage, and perf are >> > very >> > low on same hardware (only a couple of MB/s) >> > >> > using HP servers >> > DL380 g6 / smart array p410 >> > DL380 g8 / smart P420 or P822 >> > >> > sata drives (12x 4TB 5900rpm or 22x 1TB 7200rpm) raid 5 or 6 >> > >> > all accesses or done through 4Gb/s FC >> > >> > once switches to quadstor storage, i can see on the quadstor system in >> > iostat that disk at 100% almost all the time, with between 500KB and >> > sometime up to 7-8MB transfer (but more rare) >> > >> > could it be something related with block size the storage is writing, >> > compared to VTL to make the RAID controler saturating or something likt >> > that? >> > >> > -- >> > You received this message because you are subscribed to the Google >> > Groups >> > "QUADStor Storage Virtualization" group. >> > To unsubscribe from this group and stop receiving emails from it, send >> > an >> > email to quadstor-vir...@googlegroups.com. >> > For more options, visit https://groups.google.com/d/optout. > > -- > You received this message because you are subscribed to the Google Groups > "QUADStor Storage Virtualization" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to quadstor-virt+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "QUADStor Storage Virtualization" group. To unsubscribe from this group and stop receiving emails from it, send an email to quadstor-virt+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
