Of course the script will also trigger on serious issues, such as a degraded pool if one the disks in your mirror is offline. The "80" is a parameter for one of the alerts, specifically triggering when the pool is 80% full. Then add a new service to your monit configuration in Opnsense. If you are looking for all U.2 NVMe, I think QNAP has. Let’s talk about mirror vdevs, RAID-Z or dRAID to better understand real redundant data storage. The all U.2 NVMe NAS can have AMD Epyc or dual-socket Xeon with up to 100GbE connections supported. Setting up a ZFS pool involves a number of permanent decisions that will affect the performance, cost, and reliability of your data storage systems, so you really want to understand all the options at your disposal for making the right choices from the beginning. And expansion units to support 1.25PB storage pools. # Finish - If we made it here then everything is fine The same memory is rock solid on Debian 10+OpenZFS, for more than a year, with scrubs like a champ. Printf "One of the pools contains errors!" # faulty drive and run "zpool scrub" on the affected volume after resilvering.Įrrors=$(/sbin/zpool status | grep ONLINE | grep -v state | awk '' | grep -v 000) # are reported an email will be sent out. # on all volumes and all drives using "zpool status". # Errors - Check the columns for READ, WRITE and CKSUM (checksum) drive errors Printf "One of the pools has reached it's max capacity!" # optimal set of sequential writes and write performance is severely impacted.Ĭapacity=$(/sbin/zpool list -H -o capacity | cut -d'%' -f1) # ZFS will be have to randomly write blocks. If the pool is at capacity and space limited, This method is true only when the pool has
#OPENZFS SCRUB ALL POOLS FREE#
# sequential free blocks first and when the uberblock has been updated the new # probably set the warning closer to 95%. scrub reads all data blocks stored on the pool and verifies their checksums against the known good. OpenZFS 2.0 is available starting with FreeBSD 12.1-RELEASE via sysutils/openzfs and has been the default. Provide a pool name to limit monitoring to that pool. If you have a 60TB raid-z2 array then you can By default, ZFS monitors and displays all pools in the system. # percentage really depends on how large your volume is. # Capacity - Make sure the pool capacity is below 80% for best performance. Printf "One of the pools is in one of these statuses: DEGRADED|FAULTED|OFFLINE|UNAVAIL|REMOVED|FAIL|DESTROYED|corrupt|cannot|unrecover!\n" It’s generally a good idea to scrub consumer-grade drives once a week, and enterprise-grade drives once a month. This is where the filesystem checks itself for errors and attempts to heal any errors that it finds. # any keyword signifying a degraded or broken array.Ĭondition=$(/sbin/zpool status | grep -E 'DEGRADED|FAULTED|OFFLINE|UNAVAIL|REMOVED|FAIL|DESTROYED|corrupt|cannot|unrecover') ZFS Basics zpool scrubbing One of the most significant features of the ZFS filesystem is scrubbing. # Health - Check if all zfs volumes are in good condition. Scrubbing has a low priority so if the drives are being accessed while the scrub is happening there should be less impact on performance.Usage="Usage: $0 maxCapacityInPercentages\n" Scan: scrub in progress since Tue Sep 18 21:14:37 2012ġ.18G scanned out of 67.4G at 403M/s, 0h2m to go The output will look something like this: You can check the status of your scrub via: Time taken is also dependent on drive and pool performance an SSD pool will scrub much more quickly than a spinning disk pool! How long the scrub takes depends on how much data is in your pool ZFS only scrubs sectors where data is present so if your pool is mostly empty it will be finished fairly quickly. One of the most significant features of the ZFS filesystem is scrubbing.
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