[LU-8066] Move lustre procfs handling to sysfs and debugfs.

• Type: Improvement
• Resolution: Unresolved
• Priority: Minor
• Fix Version/s: Upstream
• Labels: patch upstream
• Assignee: James A Simmons
• Reporter: James A Simmons

Description

For lustre 2.8 the tools have been updated to work with the upstream client which has replaced procfs with sysfs and debugfs. Now that we fully support this setup we can safely backport all the changes done upstream to support sysfs and debugfs.

Issue Links

• is related to: LU-8970 Kernel warning on client mount if pool is defined multiple times
• is related to: LU-11850 Relocating /proc/fs/lustre/ost to /sys/kernel/debug/lustre/ost prevents non-root access
• is related to: LU-9791 When umount client, kobject_put crashed the kernel
• is related to: LU-9837 configuration from log 'lustre-MDT0000' failed
• is related to: LU-11803 sanity test 255c fails with 'Ladvise test 12, bad lock count, returned 1, actual 0'
• is related to: LU-5695 watchdog dispatch thread disappears
• is related to: LU-9431 class_process_proc_param can't handle sysfs
• is related to: LU-9725 Mount commands don't return for targets in LFS with DNE and 3 MDTs
• is related to: LU-10804 obdfilter-survey test_3a: lprocfs_alloc_obd_stats()) ASSERTION( obd->obd_proc_entry != ((void *)0) ) failed; LBUG
• is related to: LU-11986 After partial lustre_rmmod, lnet panics on debugfs read
• is related to: LU-5490 sanity test_133d: FAIL: samedir_rename_size error
• is related to: LU-9067 lctl dl command fails on el6
• is related to: LU-9104 Unknown config param in llog fails mounting target
• is related to: LU-9399 lctl conf_param and lctl set_param -P are broken for llite parameters
• is related to: LU-10038 sanity test 133g fails with “ '$'mds1 find /proc/fs/lustre/n/proc/sys/lnet/n/sys/fs/lustre/n/sys/kernel/debug/lnet/n/sys/kernel/debug/lustre/ failed''
• is related to: LU-10626 utils/tests: lctl set_param -P does not appear to do anything
• is related to: LU-10906 checksums parameter not persistent after reboot
• is related to: LU-10966 `lfs check` documentation is misleading
• is related to: LU-11157 sanity test_42e: invalid arithmetic operator (error token is ".9")
• is related to: LU-11561 Change syncjournal back to sync_journal
• is related to: LU-11898 libcfs module parameter libcfs_debug_mb has no effect
• is related to: LU-12244 lfs check subcommand no longer works as non-root user
• is related to: LU-12653 WARNING: CPU: 3 PID: 5070 at fs/proc/generic.c:399 proc_register+0x8e/0xb0
• is related to: LU-12967 sanity test 80 silently fails to get sync_on_lock_cancel parameter
• is related to: LU-13470 sysfs ping write creates a flood-ping situation that could not be normally stopped
• is related to: LU-13985 seq_file next function must change *pos
• is related to: LU-15106 deprecated obdfilter parameter warn on read
• is related to: LU-10028 Export the information about Lustre special mount flags and options
• is related to: LU-2096 name ofd device type "ofd" instead of "obdfilter"
• is related to: LU-14786 lod creates broken debugfs symlinks
• is related to: LU-12511 Prepare lustre for adoption into the linux kernel
• is related to: LU-8609 connect client health_check file to client import state
• is related to: LU-10756 Send Uevents for interesting Lustre changes
• is related to: LU-13091 conf-sanity "lctl list_param" test to verify parameter names
• is related to: LU-16931 add lctl mechanism (list_param?) to report changes to tunable parameters
• is related to: LU-3397 Create per-client "export" /proc file on server for each client connection
• is related to: LU-8750 Wrong obd_timeout on the client when we have 2 or more lustre fs
• is related to: LU-9091 Replace lprocfs_str_with_units_to_s64 with string_get_size()
• is related to: LU-8017 All Nodes report NOT HEALTHY, system is healthy
• is related to: LU-10517 setting llite.*.checksum_pages doesn't actually work
• is related to: LU-9667 LNet Kernel/Userspace Interface
• is related to: LU-4423 Tracking of patches from upstream kernel to Lustre client