twh_eastasia/virtual-dsm
1
0
Fork 0
mirror of https://github.com/vdsm/virtual-dsm.git synced 2025-02-24 13:30:02 +08:00
Code Issues Actions 1 Packages Projects Releases Wiki Activity

feat: Detect COW on btrfs

Browse Source
This commit is contained in:
Kroese 2023-12-19 06:11:50 +01:00 committed by GitHub
parent 631568681e
commit 9bac0c94a8
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 7 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
src/disk.sh
View File

@ -260,7 +260,7 @@ addDisk () {
local DISK_ADDRESS=$7 local DISK_ADDRESS=$7
local DISK_FMT=$8 local DISK_FMT=$8
local DISK_FILE="$DISK_BASE.$DISK_EXT" local DISK_FILE="$DISK_BASE.$DISK_EXT"
local DIR FS DATA_SIZE PREV_FMT PREV_EXT CUR_SIZE local DIR FS FA DATA_SIZE PREV_FMT PREV_EXT CUR_SIZE
DIR=$(dirname "$DISK_FILE") DIR=$(dirname "$DISK_FILE")
[ ! -d "$DIR" ] && return 0 [ ! -d "$DIR" ] && return 0
@ -270,7 +270,12 @@ addDisk () {
info "Warning: the filesystem of $DIR is OverlayFS, this usually means it was binded to an invalid path!" info "Warning: the filesystem of $DIR is OverlayFS, this usually means it was binded to an invalid path!"
fi fi
if [[ "$FS" == "btrfs"* ]]; then if [[ "$FS" == "btrfs"* ]]; then
FA=$(lsattr -d "$DIR") if [ -f "$DISK_FILE" ] ; then
FA=$(lsattr "$DISK_FILE")
[[ "$FA" == *"C"* ]] && FA=$(lsattr -d "$DIR")
else
FA=$(lsattr -d "$DIR")
fi
if [[ "$FA" != *"C"* ]]; then if [[ "$FA" != *"C"* ]]; then
info "Warning: the filesystem of $DIR is BTRFS, and COW (copy on write) is not disabled for that folder!" info "Warning: the filesystem of $DIR is BTRFS, and COW (copy on write) is not disabled for that folder!"
info "This will negatively affect write performance, please empty the folder and disable COW (chattr +C <path>)." info "This will negatively affect write performance, please empty the folder and disable COW (chattr +C <path>)."