diff options
| author | Alan Somers <[email protected]> | 2023-07-11 14:45:06 -0600 |
|---|---|---|
| committer | Brian Behlendorf <[email protected]> | 2023-07-21 16:35:12 -0700 |
| commit | 51a2b597679f948d6102c0e0376ba2273d82818e (patch) | |
| tree | b8a2e6636436e52f015fb2059c96259212b782f4 /man | |
| parent | 8c81c0b05d63e69473d859870f7a6e32e46b0410 (diff) | |
Don't emit checksum histograms in ereport.fs.zfs.checksum events
The checksum histograms were intended to be used with ATA and parallel
SCSI, which are obsolete. With modern storage hardware, they will
almost always look like white noise; all bits will be wrong. They only
serve to bloat the event. That's a particular problem on FreeBSD, where
events must fit into a 1016 byte buffer.
This fixes issue #14717 for RAIDZ pools, but not for mirror pools.
Reviewed-by: Brian Behlendorf <[email protected]>
Reviewed-by: Rich Ercolani <[email protected]>
Signed-off-by: Alan Somers <[email protected]>
Sponsored-by: Axcient
Closes #15052
Diffstat (limited to 'man')
| -rw-r--r-- | man/man8/zpool-events.8 | 19 |
1 files changed, 1 insertions, 18 deletions
diff --git a/man/man8/zpool-events.8 b/man/man8/zpool-events.8 index 341f902fe..c3bd3208e 100644 --- a/man/man8/zpool-events.8 +++ b/man/man8/zpool-events.8 @@ -26,7 +26,7 @@ .\" Copyright 2017 Nexenta Systems, Inc. .\" Copyright (c) 2017 Open-E, Inc. All Rights Reserved. .\" -.Dd May 27, 2021 +.Dd July 11, 2023 .Dt ZPOOL-EVENTS 8 .Os . @@ -362,23 +362,6 @@ Like but contains .Pq Ar good data No & ~( Ns Ar bad data ) ; that is, the bits set in the good data which are cleared in the bad data. -.It Sy bad_set_histogram -If this field exists, it is an array of counters. -Each entry counts bits set in a particular bit of a big-endian uint64 type. -The first entry counts bits -set in the high-order bit of the first byte, the 9th byte, etc, and the last -entry counts bits set of the low-order bit of the 8th byte, the 16th byte, etc. -This information is useful for observing a stuck bit in a parallel data path, -such as IDE or parallel SCSI. -.It Sy bad_cleared_histogram -If this field exists, it is an array of counters. -Each entry counts bit clears in a particular bit of a big-endian uint64 type. -The first entry counts bits -clears of the high-order bit of the first byte, the 9th byte, etc, and the -last entry counts clears of the low-order bit of the 8th byte, the 16th byte, -etc. -This information is useful for observing a stuck bit in a parallel data -path, such as IDE or parallel SCSI. .El . .Sh I/O STAGES |