On 2018/2/22 15:06, Amir Goldstein Wrote: > On Thu, Feb 22, 2018 at 8:27 AM, zhangyi (F) <yi.zhang@xxxxxxxxxx> wrote: >> On 2018/2/22 11:26, Amir Goldstein Wrote: >>> Zhangyi, >>> >>> Sorry for dropping lists because replying from mobile. Feel free to add back. >>> >>> >>> >>> On Feb 22, 2018 3:09 AM, "zhangyi (F)" <yi.zhang@xxxxxxxxxx <mailto:yi.zhang@xxxxxxxxxx>> wrote: >>> >>> Hook filesystem check helper to _check_test_fs and _check_scratch_fs for >>> constants underlying dirs of overlay filesystem, and introduce scratch >>> check helpers for optionally lower/upper/work dirs. These helpers works >>> only if fsck.overlay exists. >>> >>> This patch introduce OVERLAY_FSCK_OPTIONS use for check overlayfs like >>> OVERLAY_MOUNT_OPTIONS, and also introduce a mount point check helper in >>> common/rc to detect a dir is a mount point or not. >>> >>> [ _check_test_fs/_check_scratch_fs part picked from Amir's patch, thanks ] >>> >>> Signed-off-by: zhangyi (F) <yi.zhang@xxxxxxxxxx <mailto:yi.zhang@xxxxxxxxxx>> >>> --- >>> README.overlay | 10 ++++- >>> common/config | 4 ++ >>> common/overlay | 125 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ >>> common/rc | 18 ++++++++- >>> 4 files changed, 153 insertions(+), 4 deletions(-) >>> >>> diff --git a/README.overlay b/README.overlay >>> index dfb8234..9feaa6a 100644 >>> --- a/README.overlay >>> +++ b/README.overlay >>> @@ -22,6 +22,10 @@ the base fs should be pre-formatted before starting the -overlay run. >>> An easy way to accomplish this is by running './check <some test>' once, >>> before running './check -overlay'. >>> >>> +'./check -overlay' support check overlay test and scratch dirs, >>> +OVERLAY_FSCK_OPTIONS should be set instead of FSCK_OPTIONS if fsck >>> +options need to given directly. >>> + >>> Because of the lack of mkfs support, multi-section config files are only >>> partly supported with './check -overlay'. Only multi-section files that >>> do not change FSTYP and MKFS_OPTIONS can be safely used with -overlay. >>> @@ -40,7 +44,9 @@ run overlay tests on the same base fs, but with different mount options: >>> MOUNT_OPTIONS="-o pquota" >>> TEST_FS_MOUNT_OPTS="-o noatime" >>> OVERLAY_MOUNT_OPTIONS="-o redirect_dir=off" >>> + OVERLAY_FSCK_OPTIONS="-n" >>> >>> >>> I may have missed this before but was under the impression that -n was the fsck option by default for post test fs check. >>> >>> I believe that's how it usually is with fstests. >>> >> Yes, you are right, -n is the default option. Current OVERLAY_FSCK_OPTIONS is >> used to avoid getting the base filesystem's FSCK_OPTIONS in multi sections config >> case, becasue we cannot distinguish between leftover FSCK_OPTIONS and user specified >> FSCK_OPTIONS, so introduce OVERLAY_FSCK_OPTIONS and set -n to default as example. >> > > I don't follow. How are FSCK_OPTIONS differ from MOUNT_OPTIONS in that sense? > When restoring base fs options, we check if MOUNT_OPTIONS differ from > OVERLAY_MOUNT_OPTIONS to distinguish between leftover MOUNT_OPTIONS. > My point is that specifying OVERLAY_FSCK_OPTIONS="-n" is the example is quite > confusing, because it suggests that use needs to set OVERLAY_FSCK_OPTIONS="-n" > in order to get the expected default behavior. > If that is indeed the case then it should be fixed. > And the example should be changed IMO to something like this, to be more > relevant to current code base and near (?) future fsck options: > > OVERLAY_MOUNT_OPTIONS="-o index=on" > OVERLAY_FSCK_OPTIONS="-o index=on" > I understand what you mean, but the option arguments we pass to mount and fsck.overlay were not quite the same, we only reuse overlay's special part of MOUNT_OPTIONS(e.g. index=xx,redirect_dir=xx...), and we still need to pass the fsck.overlay's own options(e.g. -n, maybe -f in future) through OVERLAY_FSCK_OPTIONS (and I think there is no reason to hide this if user want to given options directly). Like this: OVERLAY_MOUNT_OPTIONS="-o index=on" OVERLAY_FSCK_OPTIONS="-n -o index=on" Now specifying OVERLAY_FSCK_OPTIONS="-n" is not necessary, I can modify to OVERLAY_MOUNT_OPTIONS="-n, -o redirect_dir=off" after fsck.overlay can actually handle this. If you think it's confusing, modify it now is also not harmful. Thanks. Yi. -- To unsubscribe from this list: send the line "unsubscribe linux-unionfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
